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Sample records for emras urban remediation

  1. Improvement of modelling capabilities for assessing urban contamination : The EMRAS Urban Remediation Working Group.

    SciTech Connect

    Thiessen, K. M.; Batandjieva, B.; Andersson, K. G.; Arkhipov, A.; Charnock, T. W.; Gallay, F.; Gaschak, S.; Golikov, V.; Hwang, W. T.; Kaiser, J. C.; Kamboj, S.; Steiner, M.; Tomas, J.; Trifunovic, D.; Yu, C.; Ziemer, R. L.; Zlobenko, B.; Environmental Science Division; SENES Oak Ridge; IAEA; Riso National Lab.; Chernobyl Center for Nuclear Safety; Health Protection Agency; IRSN; Inst. of Radiation Hygene of the Ministry of Public Health, Russian Federation; KAERI, Republic of Korea; GSF, Germany; BfS, Germany; CPHR, Cuba; State Office for Radiation Protection, Croatia; AECL, Canada; National Academy of Science, Ukraine

    2008-01-01

    The Urban Remediation Working Group of the International Atomic Energy Agency's Environmental Modeling for Radiation Safety (EMRAS) programme was established to improve modeling and assessment capabilities for radioactively contaminated urban situations, including the effects of countermeasures. An example of the Working Group's activities is an exercise based on Chernobyl fallout data in Ukraine, which has provided an opportunity to compare predictions among several models and with available measurements, to discuss reasons for discrepancies, and to identify areas where additional information would be helpful.

  2. Modelling of a large-scale urban contamination situation and remediation alternatives.

    PubMed

    Thiessen, K M; Arkhipov, A; Batandjieva, B; Charnock, T W; Gaschak, S; Golikov, V; Hwang, W T; Tomás, J; Zlobenko, B

    2009-05-01

    The Urban Remediation Working Group of the International Atomic Energy Agency's EMRAS (Environmental Modelling for Radiation Safety) program was organized to address issues of remediation assessment modelling for urban areas contaminated with dispersed radionuclides. The present paper describes the first of two modelling exercises, which was based on Chernobyl fallout data in the town of Pripyat, Ukraine. Modelling endpoints for the exercise included radionuclide concentrations and external dose rates at specified locations, contributions to the dose rates from individual surfaces and radionuclides, and annual and cumulative external doses to specified reference individuals. Model predictions were performed for a "no action" situation (with no remedial measures) and for selected countermeasures. The exercise provided a valuable opportunity to compare modelling approaches and parameter values, as well as to compare the predicted effectiveness of various countermeasures with respect to short-term and long-term reduction of predicted doses to people.

  3. Modeling the Long-term Consequences of a Hypothetical Dispersal of Radioactivity in an Urban area including Remediation Alternatives

    DOE PAGES

    Thiessen, K.M.; Andersson, K. G.; Batandjieva, B.; ...

    2009-06-01

    The Urban Remediation Working Group of the International Atomic Energy Agency's EMRAS (Environmental Modelling for Radiation Safety) program was organized to address issues of remediation assessment modelling for urban areas contaminated with dispersed radionuclides. The present paper describes the second of two modelling exercises. This exercise was based on a hypothetical dispersal of radioactivity in an urban area from a radiological dispersal device, with reference surface contamination at selected sites used as the primary input information. Modelling endpoints for the exercise included radionuclide concentrations and external dose rates at specified locations, contributions to the dose rates from individual surfaces, andmore » annual and cumulative external doses to specified reference individuals. Model predictions were performed for a “no action” situation (with no remedial measures) and for selected countermeasures. The exercise provided an opportunity for comparison of three modelling approaches, as well as a comparison of the predicted effectiveness of various countermeasures in terms of their short-term and long-term effects on predicted doses to humans.« less

  4. Modeling the Long-term Consequences of a Hypothetical Dispersal of Radioactivity in an Urban area including Remediation Alternatives

    SciTech Connect

    Thiessen, K.M.; Andersson, K. G.; Batandjieva, B.; Cheng, J.-J.; Hwang, W.T.; Kaiser, J.C.; Kamboj, S.; Steiner, M.; Tomas, J.; Trifunovic, D.; Yu, C.

    2009-06-01

    The Urban Remediation Working Group of the International Atomic Energy Agency's EMRAS (Environmental Modelling for Radiation Safety) program was organized to address issues of remediation assessment modelling for urban areas contaminated with dispersed radionuclides. The present paper describes the second of two modelling exercises. This exercise was based on a hypothetical dispersal of radioactivity in an urban area from a radiological dispersal device, with reference surface contamination at selected sites used as the primary input information. Modelling endpoints for the exercise included radionuclide concentrations and external dose rates at specified locations, contributions to the dose rates from individual surfaces, and annual and cumulative external doses to specified reference individuals. Model predictions were performed for a “no action” situation (with no remedial measures) and for selected countermeasures. The exercise provided an opportunity for comparison of three modelling approaches, as well as a comparison of the predicted effectiveness of various countermeasures in terms of their short-term and long-term effects on predicted doses to humans.

  5. An urban lake remediation experiment

    SciTech Connect

    Castelli, S.E.; Gardner, K.H.; Jennings, A.A.

    1998-07-01

    Circumstances provided the opportunity to study a small urban lake as the surrounding municipalities attempted to improve its aesthetic quality by dredging. This manuscript focuses primarily on the sediments in the system: accumulation rates, the expected dynamics of the lake bed drying process, and the influence of the sediments on water quality.

  6. Using phytotechnologies to remediate brownfields, landfills, and other urban areas

    Treesearch

    R.S. Zalesny Jr.; Jill Zalesny

    2010-01-01

    Urban areas requiring remedial work has prompted the use of phytotechnologies to improve water quality, soil health, and biodiversity, as well as to achieve sustainable social and economic goals. Phytotechnologies directly use plants to clean up contaminated groundwater, soil, and sediment.

  7. [Urban industrial contaminated sites: a new issue in the field of environmental remediation in China].

    PubMed

    Liao, Xiao-Yong; Chong, Zhong-Yi; Yan, Xiu-Lan; Zhao, Dan

    2011-03-01

    Contamination of urban industrial lands is a new environmental problem in China during the process of upgrade of industrial structure and adjustment of urban layout. It restricts the safe re-use of urban land resources, and threatens the health of surrounding inhabitants. In the paper, the market potential of contaminated-site remediation was known through analysis of spatial distribution of urban industrial sites in China. Remediation technologies in the Occident which were suitable for urban industrial contaminated sites were discussed and compared to evaluate their superiority and inferiority. And then, some advices of remediation technologies for urban industrial contaminated sites in China were proposed.

  8. Progresses in tritium accident modelling in the frame of IAEA EMRAS II

    SciTech Connect

    Galeriu, D.; Melintescu, A.

    2015-03-15

    The assessment of the environmental impact of tritium release from nuclear facilities is a topic of interest in many countries. In the IAEA's Environmental Modelling for Radiation Safety (EMRAS I) programme, progresses for routine releases were done and in the EMRAS II programme a dedicated working group (WG 7 - Tritium Accidents) focused on the potential accidental releases (liquid and atmospheric pathways). The progresses achieved in WG 7 were included in a complex report - a technical document of IAEA covering both liquid and atmospheric accidental release consequences. A brief description of the progresses achieved in the frame of EMRAS II WG 7 is presented. Important results have been obtained concerning washout rate, the deposition on the soil of HTO and HT, the HTO uptake by leaves and the subsequent conversion to OBT (organically bound tritium) during daylight. Further needs of the processes understanding and the experimental efforts are emphasised.

  9. Urban blight remediation as a cost-beneficial solution to firearm violence

    Treesearch

    Charles C. Branas; Michelle C. Kondo; Sean M. Murphy; Eugenia C. South; Daniel Polsky; John M. MacDonald

    2016-01-01

    Objectives. To determine if blight remediation of abandoned buildings and vacant lots can be a cost-beneficial solution to firearm violence in US cities. Methods. We performed quasi-experimental analyses of the impacts and economic returns on investment of urban blight remediation programs involving 5112 abandoned buildings and vacant lots on the occurrence of firearm...

  10. Decontamination Technologies, Task 3, Urban Remediation and Response Project

    SciTech Connect

    Heiser,J.; Sullivan, T.

    2009-06-30

    In the aftermath of a Radiological Dispersal Device (RDD, also known as a dirty bomb) it will be necessary to remediate the site including building exteriors and interiors, equipment, pavement, vehicles, personal items etc. Remediation will remove or reduce radioactive contamination from the area using a combination of removing and disposing of many assets (including possible demolition of buildings), decontaminating and returning to service other assets, and fixing in place or leaving in place contamination that is deemed 'acceptable'. The later will require setting acceptable dose standards, which will require negotiation with all involved parties and a balance of risk and cost to benefit. To accomplish the first two, disposal or decontamination, a combination of technologies will be deployed that can be loosely classified as: Decontamination; Equipment removal and size reduction; and Demolition. This report will deal only with the decontamination technologies that will be used to return assets to service or to reduce waste disposal. It will not discuss demolition, size reduction or removal technologies or equipment (e.g., backhoe mounted rams, rock splitter, paving breakers and chipping hammers, etc.). As defined by the DOE (1994), decontamination is removal of radiological contamination from the surfaces of facilities and equipment. Expertise in this field comes primarily from the operation and decommissioning of DOE and commercial nuclear facilities as well as a small amount of ongoing research and development closely related to RDD decontamination. Information related to decontamination of fields, buildings, and public spaces resulting from the Goiania and Chernobyl incidents were also reviewed and provide some meaningful insight into decontamination at major urban areas. In order to proceed with decontamination, the item being processed needs to have an intrinsic value that exceeds the cost of the cleaning and justifies the exposure of any workers during the

  11. Urban Blight Remediation as a Cost-Beneficial Solution to Firearm Violence

    PubMed Central

    Kondo, Michelle C.; Murphy, Sean M.; South, Eugenia C.; Polsky, Daniel; MacDonald, John M.

    2016-01-01

    Objectives. To determine if blight remediation of abandoned buildings and vacant lots can be a cost-beneficial solution to firearm violence in US cities. Methods. We performed quasi-experimental analyses of the impacts and economic returns on investment of urban blight remediation programs involving 5112 abandoned buildings and vacant lots on the occurrence of firearm and nonfirearm violence in Philadelphia, Pennsylvania, from 1999 to 2013. We adjusted before–after percent changes and returns on investment in treated versus control groups for sociodemographic factors. Results. Abandoned building remediation significantly reduced firearm violence −39% (95% confidence interval [CI] = −28%, −50%; P < .05) as did vacant lot remediation (−4.6%; 95% CI = −4.2%, −5.0%; P < .001). Neither program significantly affected nonfirearm violence. Respectively, taxpayer and societal returns on investment for the prevention of firearm violence were $5 and $79 for every dollar spent on abandoned building remediation and $26 and $333 for every dollar spent on vacant lot remediation. Conclusions. Abandoned buildings and vacant lots are blighted structures seen daily by urban residents that may create physical opportunities for violence by sheltering illegal activity and illegal firearms. Urban blight remediation programs can be cost-beneficial strategies that significantly and sustainably reduce firearm violence. PMID:27736217

  12. Urban Blight Remediation as a Cost-Beneficial Solution to Firearm Violence.

    PubMed

    Branas, Charles C; Kondo, Michelle C; Murphy, Sean M; South, Eugenia C; Polsky, Daniel; MacDonald, John M

    2016-12-01

    To determine if blight remediation of abandoned buildings and vacant lots can be a cost-beneficial solution to firearm violence in US cities. We performed quasi-experimental analyses of the impacts and economic returns on investment of urban blight remediation programs involving 5112 abandoned buildings and vacant lots on the occurrence of firearm and nonfirearm violence in Philadelphia, Pennsylvania, from 1999 to 2013. We adjusted before-after percent changes and returns on investment in treated versus control groups for sociodemographic factors. Abandoned building remediation significantly reduced firearm violence -39% (95% confidence interval [CI] = -28%, -50%; P < .05) as did vacant lot remediation (-4.6%; 95% CI = -4.2%, -5.0%; P < .001). Neither program significantly affected nonfirearm violence. Respectively, taxpayer and societal returns on investment for the prevention of firearm violence were $5 and $79 for every dollar spent on abandoned building remediation and $26 and $333 for every dollar spent on vacant lot remediation. Abandoned buildings and vacant lots are blighted structures seen daily by urban residents that may create physical opportunities for violence by sheltering illegal activity and illegal firearms. Urban blight remediation programs can be cost-beneficial strategies that significantly and sustainably reduce firearm violence.

  13. Scheduling the Remediation of Port Hope: Logistical and Regulatory Challenges of a Multiple Site Urban Remediation Project - 13119

    SciTech Connect

    Ferguson Jones, Andrea; Lee, Angela; Palmeter, Tim

    2013-07-01

    The Port Hope Project is part of the larger CAN$1.28 billion Port Hope Area Initiative (PHAI), a community-based program for the development and implementation of a safe, local, long-term management solution for historic Low-Level Radioactive Waste (LLRW) in the Municipalities of Port Hope and Clarington, Ontario, Canada. Atomic Energy of Canada (AECL) is the Project Proponent, Public Works and Government Services (PWGSC) is managing the procurement of services and the MMM Group Limited - Conestoga Rovers and Associates Joint Venture (MMM-CRA Joint Venture) is providing detailed design and construction oversight and administration services for the Project. The Port Hope Project includes the construction of a long-term waste management facility (LTWMF) in the Municipality of Port Hope and the remediation of 18 (eighteen) large-scale LLRW, numerous small-scale sites still being identified and industrial sites within the Municipality. The total volume to be remediated is over one million cubic metres and will come from sites that include temporary storage sites, ravines, beaches, parks, private commercial and residential properties and vacant industrial sites all within the urban area of Port Hope. Challenges that will need to be overcome during this 10 year project include: - Requirements stipulated by the Environmental Assessment (EA) that affect Project logistics and schedule. - Coordination of site remediation with the construction schedule at the LTWMF. - Physical constraints on transport routes and at sites affecting production rates. - Despite being an urban undertaking, seasonal constrains for birds and fish (i.e., nesting and spawning seasons). - Municipal considerations. - Site-specific constraints. - Site interdependencies exist requiring consideration in the schedule. Several sites require the use of an adjacent site for staging. (authors)

  14. Sediments, porewaters and diagenesis in an urban water body, Salford, UK: impacts of remediation

    NASA Astrophysics Data System (ADS)

    Taylor, Kevin G.; Boyd, Nathan A.; Boult, Stephen

    2003-07-01

    Contaminated sediments deposited within urban water bodies commonly exert a significant negative effect on overlying water quality. However, our understanding of the processes operating within such anthropogenic sediments is currently poor. This paper describes the nature of the sediment and early diagenetic reactions in a highly polluted major urban water body (the Salford Quays of the Manchester Ship Canal) that has undergone remediation focused on the water column.The style of sedimentation within Salford Quays has been significantly changed as a result of remediation of the water column. Pre-remediation sediments are composed of a range of natural detrital grains, predominantly quartz and clay, and anthropogenic detrital material dominated by industrial furnace-derived metal-rich slag grains. Post-remediation sediments are composed of predominantly autochthonous material, including siliceous algal remains and clays. At the top of the pre-remediation sediments and immediately beneath the post-remediation sediments is a layer significantly enriched in furnace-derived slag grains, input into the basin as a result of site clearance prior to water-column remediation. These grains contain a high level of metals, resulting in a significantly enhanced metal concentration in the sediments at this depth.Porewater analysis reveals the importance of both bacterial organic matter oxidation reactions and the dissolution of industrial grains upon the mobility of nutrient and chemical species within Salford Quays. Minor release of iron and manganese at shallow depths is likely to be taking place as a result of bacterial Fe(III) and Mn(IV) reduction. Petrographic analysis reveals that the abundant authigenic mineral within the sediment is manganese-rich vivianite, and thus Fe(II) and Mn(II) released by bacterial reactions may be being taken up through the precipitation of this mineral. Significant porewater peaks in iron, manganese and silicon deeper in the sediment column are

  15. Remediation of metal-contaminated urban soil using flotation technique.

    PubMed

    Dermont, G; Bergeron, M; Richer-Laflèche, M; Mercier, G

    2010-02-01

    A soil washing process using froth flotation technique was evaluated for the removal of arsenic, cadmium, copper, lead, and zinc from a highly contaminated urban soil (brownfield) after crushing of the particle-size fractions >250microm. The metal contaminants were in particulate forms and distributed in all the particle-size fractions. The particle-by-particle study with SEM-EDS showed that Zn was mainly present as sphalerite (ZnS), whereas Cu and Pb were mainly speciated as various oxide/carbonate compounds. The influence of surfactant collector type (non-ionic and anionic), collector dosage, pulp pH, a chemical activation step (sulfidization), particle size, and process time on metal removal efficiency and flotation selectivity was studied. Satisfactory results in metal recovery (42-52%), flotation selectivity (concentration factor>2.5), and volume reduction (>80%) were obtained with anionic collector (potassium amyl xanthate). The transportation mechanisms involved in the separation process (i.e., the true flotation and the mechanical entrainment) were evaluated by the pulp chemistry, the metal speciation, the metal distribution in the particle-size fractions, and the separation selectivity indices of Zn/Ca and Zn/Fe. The investigations showed that a great proportion of metal-containing particles were recovered in the froth layer by entrainment mechanism rather than by true flotation process. The non-selective entrainment mechanism of the fine particles (<20 microm) caused a flotation selectivity drop, especially with a long flotation time (>5 min) and when a high collector dose is used. The intermediate particle-size fraction (20-125 microm) showed the best flotation selectivity.

  16. Effectiveness and sustainability of remedial actions for land restoration in Abeokuta urban communities, Ogun State, Nigeria

    NASA Astrophysics Data System (ADS)

    Lawal-Adebowale, Okanlade

    2016-04-01

    Land as a major collective human property faces a great deal of threats and eventual degradation from both natural and human causal factors across the globe. But for the central role of land in human's sustenance and quality living, man cannot afford to lose its natural asset and as such takes mitigating or remedial actions to save and restore his land for sustainable use. In view of this, the study assessed the causal factors of land degradation in urban areas of Abeokuta and effectiveness and sustainability of the taken remedial actions to stem the tide of land degradation in the study area. The selected communities were purposively selected based on the observed prevalence of degraded lands in the areas. A qualitative research approach which encompasses observational techniques - participant/field observation, interactive discussion and photographic capturing, was used for collection of data on land degradation in the study area. A combination of phenomenological, inductive thematic analysis and conversation/discourse analysis was employed for data analysis. The results showed land gradients/slopes, rainfall, run-offs/erosion, land-entrenched foot impacts, sand scraping/mining, poor/absence of drainage system and land covers as causal factors of land degradation in the study area. The employed remedial actions for restoration of degraded land included filling of drenches with sand bags, wood logs, bricks and stones, and sand filling. The study though observed that filling of drenches caused by erosion with rubles/stones and construction of drainage were effective remedial actions, good drainage system was presumed to be the most appropriate and sustainable remedial action for land restoration in the study area.

  17. Urban gardens: lead exposure, recontamination mechanisms, and implications for remediation design.

    PubMed

    Clark, Heather F; Hausladen, Debra M; Brabander, Daniel J

    2008-07-01

    Environmental lead contamination is prevalent in urban areas where soil represents a significant sink and pathway of exposure. This study characterizes the speciation of lead that is relevant to local recontamination and to human exposure in the backyard gardens of Roxbury and Dorchester, MA, USA. One hundred forty-one backyard gardens were tested by X-ray fluorescence, and 81% of gardens have lead levels above the US EPA action limit of 400 microg/g. Raised gardening beds are the in situ exposure reduction method used in the communities to promote urban gardening. Raised beds were tested for lead and the results showed that the lead concentration increased from an initial range of 150+/-40 microg/g to an average of 336 microg/g over 4 years. The percent distribution of lead in the fine grain soil (<100 microm) and the trace metal signature of the raised beds support the conclusion that the mechanism of recontamination is wind-transported particles. Scanning electron microscopy and sequential extraction were used to characterize the speciation of lead, and the trace metal signature of the fine grain soil in both gardens and raised gardening beds is characteristic of lead-based paint. This study demonstrates that raised beds are a limited exposure reduction method and require maintenance to achieve exposure reduction goals. An exposure model was developed based on a suite of parameters that combine relevant values from the literature with site-specific quantification of exposure pathways. This model suggests that consumption of homegrown produce accounts for only 3% of children's daily exposure of lead while ingestion of fine grained soil (<100 microm) accounts for 82% of the daily exposure. This study indicates that urban lead remediation on a yard-by-yard scale requires constant maintenance and that remediation may need to occur on a neighborhood-wide scale.

  18. Urban gardens: Lead exposure, recontamination mechanisms, and implications for remediation design

    SciTech Connect

    Clark, Heather F. Hausladen, Debra M.; Brabander, Daniel J.

    2008-07-15

    Environmental lead contamination is prevalent in urban areas where soil represents a significant sink and pathway of exposure. This study characterizes the speciation of lead that is relevant to local recontamination and to human exposure in the backyard gardens of Roxbury and Dorchester, MA, USA. One hundred forty-one backyard gardens were tested by X-ray fluorescence, and 81% of gardens have lead levels above the US EPA action limit of 400 {mu}g/g. Raised gardening beds are the in situ exposure reduction method used in the communities to promote urban gardening. Raised beds were tested for lead and the results showed that the lead concentration increased from an initial range of 150{+-}40 {mu}g/g to an average of 336 {mu}g/g over 4 years. The percent distribution of lead in the fine grain soil (<100 {mu}m) and the trace metal signature of the raised beds support the conclusion that the mechanism of recontamination is wind-transported particles. Scanning electron microscopy and sequential extraction were used to characterize the speciation of lead, and the trace metal signature of the fine grain soil in both gardens and raised gardening beds is characteristic of lead-based paint. This study demonstrates that raised beds are a limited exposure reduction method and require maintenance to achieve exposure reduction goals. An exposure model was developed based on a suite of parameters that combine relevant values from the literature with site-specific quantification of exposure pathways. This model suggests that consumption of homegrown produce accounts for only 3% of children's daily exposure of lead while ingestion of fine grained soil (<100 {mu}m) accounts for 82% of the daily exposure. This study indicates that urban lead remediation on a yard-by-yard scale requires constant maintenance and that remediation may need to occur on a neighborhood-wide scale.

  19. Urban geochemistry: research strategies to assist risk assessment and remediation of brownfield sites in urban areas.

    PubMed

    Thornton, I; Farago, M E; Thums, C R; Parrish, R R; McGill, R A R; Breward, N; Fortey, N J; Simpson, P; Young, S D; Tye, A M; Crout, N M J; Hough, R L; Watt, J

    2008-12-01

    Urban geochemical maps of Wolverhampton and Nottingham, based on multielement analysis of surface soils, have shown distribution patterns of "total" metals concentrations relating to past and present industrial and domestic land use and transport systems. Several methods have been used to estimate the solubility and potential bioavailability of metals, their mineral forms and potential risks to urban population groups. These include sequential chemical extraction, soil pore water extraction and analysis, mineralogical analysis by scanning electron microscopy, source apportionment by lead isotope analysis and the development of models to predict metal uptake by homegrown vegetables to provide an estimate of risk from metal consumption and exposure. The results from these research strategies have been integrated with a geographical information system (GIS) to provide data for future land-use planning.

  20. Spatial and temporal variation of freely dissolved PAHs in an urban river undergoing Superfund remediation

    PubMed Central

    Sower, GJ; Anderson, K.A.

    2014-01-01

    Urban rivers with a history of industrial use can exhibit spatial and temporal variations in contaminant concentrations that may significantly affect risk evaluations and even the assessment of remediation efforts. Concentrations of 15 biologically available priority pollutant polycyclic aromatic hydrocarbons (PAHs) were measured over five years along 18.5 miles of the lower Willamette River using passive sampling devices and HPLC. The study area includes the Portland Harbor Superfund megasite with several PAH sources including remediation operations for coal tar at RM 6.3 west and an additional Superfund site, McCormick and Baxter, at RM 7 east consisting largely of creosote contamination. Study results show that organoclay capping at the McCormick and Baxter Superfund Site reduced PAHs from a pre-cap average of 440 ± 422 ng/L to 8 ± 3 ng/L post-capping. Results also reveal that dredging of submerged coal tar nearly tripled nearby freely dissolved PAH concentrations. For apportioning sources, fluoranthene/ pyrene and phenanthrene/anthracene diagnostic ratios from passive sampling devices were established for creosote and coal tar contamination and compared to published sediment values. PMID:19174872

  1. EmrA1 Membrane Fusion Protein of Francisella tularensis LVS is required for Resistance to Oxidative Stress, Intramacrophage Survival and Virulence in Mice

    PubMed Central

    Ma, Zhuo; Banik, Sukalyani; Rane, Harshita; Mora, Vanessa T.; Rabadi, Seham M.; Doyle, Christopher R.; Thanassi, David G.; Bakshi, Chandra Shekhar; Malik, Meenakshi

    2014-01-01

    Francisella tularensis is a Category A Biodefense agent that causes a fatal human disease known as tularemia. The pathogenicity of F. tularensis depends on its ability to persist inside host immune cells primarily by resisting an attack from host-generated reactive oxygen and nitrogen species (ROS/RNS). Based on the ability of F. tularensis to resist high ROS/RNS levels, we have hypothesized that additional unknown factors act in conjunction with known antioxidant defenses to render ROS resistance. By screening a transposon insertion library of F. tularensis LVS in the presence of hydrogen peroxide, we have identified an oxidant sensitive mutant in putative EmrA1 (FTL_0687) secretion protein. The results demonstrate that the emrA1 mutant is highly sensitive to oxidants and several antimicrobial agents, and exhibits diminished intramacrophage growth that can be restored to wild type F. tularensis LVS levels either by transcomplementation, inhibition of ROS generation, or infection in NADPH oxidase deficient (gp91Phox−/−) macrophages. The emrA1 mutant is attenuated for virulence, which is restored by infection in gp91Phox−/− mice. Further, EmrA1 contributes to oxidative stress resistance by affecting secretion of Francisella antioxidant enzymes SodB and KatG. This study exposes unique links between transporter activity and the antioxidant defense mechanisms of F. tularensis. PMID:24397487

  2. Development and validation of a model for tritium accumulation by a freshwater bivalve using the IAEA EMRAS scenarios

    SciTech Connect

    Miyamoto, K.; Inoue, Y.; Takeda, H.; Yanagisawa, K.; Fuma, S.; Ishii, N.; Kuroda, N.; Yankovich, T.; Kim, S. B.; Davis, P.

    2008-07-15

    A six-compartment metabolic model for tritium accumulation by bivalves was developed and validated using two observed data sets supplied in an international IAEA program for validation of environmental models, EMRAS (Environmental Modeling for Radiation Safety, 2003-2007). The data observed were presented in scenarios for model prediction of temporal change of HTO and OBT concentrations in Barnes mussels (Elliptio complanata). In the Uptake Scenario, mussels were transplanted from a site with background tritium concentrations into a lake, which has historically received tritium inputs over time from up-gradient waste management areas. Another data set was presented in the Depuration Scenario for model prediction of the temporal decrease in HTO and OBT concentrations in the mussels following transplantation from the lake into another lake with significantly lower tritium levels. The model simulation was able to reproduce the observation that the amount of hydrogen taken from sediment was very small compared with that taken from lake water. (authors)

  3. Bioavailability-Based In Situ Remediation To Meet Future Lead (Pb) Standards in Urban Soils and Gardens.

    PubMed

    Henry, Heather; Naujokas, Marisa F; Attanayake, Chammi; Basta, Nicholas T; Cheng, Zhongqi; Hettiarachchi, Ganga M; Maddaloni, Mark; Schadt, Christopher; Scheckel, Kirk G

    2015-08-04

    Recently the Centers for Disease Control and Prevention lowered the blood Pb reference value to 5 μg/dL. The lower reference value combined with increased repurposing of postindustrial lands are heightening concerns and driving interest in reducing soil Pb exposures. As a result, regulatory decision makers may lower residential soil screening levels (SSLs), used in setting Pb cleanup levels, to levels that may be difficult to achieve, especially in urban areas. This paper discusses challenges in remediation and bioavailability assessments of Pb in urban soils in the context of lower SSLs and identifies research needs to better address those challenges. Although in situ remediation with phosphate amendments is a viable option, the scope of the problem and conditions in urban settings may necessitate that SSLs be based on bioavailable rather than total Pb concentrations. However, variability in soil composition can influence bioavailability testing and soil amendment effectiveness. More data are urgently needed to better understand this variability and increase confidence in using these approaches in risk-based decision making, particularly in urban areas.

  4. Bioavailability-Based In Situ Remediation To Meet Future Lead (Pb) Standards in Urban Soils and Gardens

    SciTech Connect

    Henry, Heather; Naujokas, Marisa F.; Attanayake, Chammi; Basta, Nicholas T.; Cheng, Zhongqi; Hettiarachchi, Ganga M.; Maddaloni, Mark; Schadt, Christopher; Scheckel, Kirk G.

    2015-07-03

    Recently the Centers for Disease Control and Prevention lowered the blood Pb reference value to 5 μg/dL. The lower reference value combined with increased repurposing of postindustrial lands are heightening concerns and driving interest in reducing soil Pb exposures. As a result, regulatory decision makers may lower residential soil screening levels (SSLs), used in setting Pb cleanup levels, to levels that may be difficult to achieve, especially in urban areas. This study discusses challenges in remediation and bioavailability assessments of Pb in urban soils in the context of lower SSLs and identifies research needs to better address those challenges. Although in situ remediation with phosphate amendments is a viable option, the scope of the problem and conditions in urban settings may necessitate that SSLs be based on bioavailable rather than total Pb concentrations. However, variability in soil composition can influence bioavailability testing and soil amendment effectiveness. Finally, more data are urgently needed to better understand this variability and increase confidence in using these approaches in risk-based decision making, particularly in urban areas.

  5. Bioavailability-Based In Situ Remediation To Meet Future Lead (Pb) Standards in Urban Soils and Gardens

    DOE PAGES

    Henry, Heather; Naujokas, Marisa F.; Attanayake, Chammi; ...

    2015-07-03

    Recently the Centers for Disease Control and Prevention lowered the blood Pb reference value to 5 μg/dL. The lower reference value combined with increased repurposing of postindustrial lands are heightening concerns and driving interest in reducing soil Pb exposures. As a result, regulatory decision makers may lower residential soil screening levels (SSLs), used in setting Pb cleanup levels, to levels that may be difficult to achieve, especially in urban areas. This study discusses challenges in remediation and bioavailability assessments of Pb in urban soils in the context of lower SSLs and identifies research needs to better address those challenges. Althoughmore » in situ remediation with phosphate amendments is a viable option, the scope of the problem and conditions in urban settings may necessitate that SSLs be based on bioavailable rather than total Pb concentrations. However, variability in soil composition can influence bioavailability testing and soil amendment effectiveness. Finally, more data are urgently needed to better understand this variability and increase confidence in using these approaches in risk-based decision making, particularly in urban areas.« less

  6. Use of geostatistics for remediation planning to transcend urban political boundaries.

    PubMed

    Milillo, Tammy M; Sinha, Gaurav; Gardella, Joseph A

    2012-11-01

    Soil remediation plans are often dictated by areas of jurisdiction or property lines instead of scientific information. This study exemplifies how geostatistically interpolated surfaces can substantially improve remediation planning. Ordinary kriging, ordinary co-kriging, and inverse distance weighting spatial interpolation methods were compared for analyzing surface and sub-surface soil sample data originally collected by the US EPA and researchers at the University at Buffalo in Hickory Woods, an industrial-residential neighborhood in Buffalo, NY, where both lead and arsenic contamination is present. Past clean-up efforts estimated contamination levels from point samples, but parcel and agency jurisdiction boundaries were used to define remediation sites, rather than geostatistical models estimating the spatial behavior of the contaminants in the soil. Residents were understandably dissatisfied with the arbitrariness of the remediation plan. In this study we show how geostatistical mapping and participatory assessment can make soil remediation scientifically defensible, socially acceptable, and economically feasible.

  7. Effect of eco-remediation using planted floating bed system on nutrients and heavy metals in urban river water and sediment: a field study in China.

    PubMed

    Ning, Daliang; Huang, Yong; Pan, Ruisong; Wang, Fayuan; Wang, Hui

    2014-07-01

    To investigate the effect of the eco-remediation on nutrients and heavy metals in river water and sediment, a field study was carried out in a site of a 2-year eco-remediation mainly using planted floating bed system in an urban river in China. Before remediation, the tested properties of water and sediment in the will-be remediated area were not different from the control area, except higher concentrations of chemical oxygen demand (COD) and total nitrogen (TN) in the river water. After remediation, the remediation area showed effective removal of in-stream nutrients and elevation of dissolved oxygen and transparency. Compared to the control area, the remediation area had higher concentration of nitrate and lower concentrations of COD, ammonium, Mn and hexavalent Cr in the river water after a 2-year remediation. The remediation area also showed higher concentrations of organic carbon, TN, nitrate, sulfate, Fe, Cu, Pb and Zn in the sediment than in the control area. Accordingly, special attention should be paid to the ecological risk of heavy metals in sediments and plants in river eco-remediation projects especially in rivers polluted by heavy metals, although the metals were lower than the level of considerable ecological risk in this study.

  8. Remediating Mass Movements, induced by Water, in Urban Environments - an example from Chalki Village, Peloponnese, Greece

    NASA Astrophysics Data System (ADS)

    Rozos, D.; Loupasakis, C.; Koumantakis, J.; Tsangaratos, P.; Markantonis, K.

    2012-04-01

    The Village of Chalki, located in Korinthos Prefecture, Northern Peloponnese, Greece, is being affected by severe mass movements that have disrupted large portions of the urban settlement, since 1950. In the following years, these phenomena where occasionally reactivated either as a consequence of human interventions and activities or extreme natural events, such as heavy rainfall and seismic activity. In 2003, after a three years long period of heavy rainfall, a number of serious damages were recorded in the region. Specifically, the direct consequences that followed the reactivation of the mass movements were identified as damages recorded on existing buildings, fencing walls, water supply networks as well as on the road network. The observed mass movements caused serious problems in the region that surrounded the village of Chalki, impeding its development, and spreading insecurity among the residents. The severity of the damages forced the authorities to assign the study of these slope movements to our research team. The purpose of this study was to highlight the slope stability problems and systematically study the evolution of the mass movement. More specifically, a detailed geotechnical survey was conducted by (a) collecting and processing the available bibliographical data, (b) mapping and classifying the lithological structure of the research area, (c) executing several field and laboratory tests for the estimation of the physical and mechanical properties of each lithological unit, (d) installing and monitoring specific landslide monitoring systems and (e) conducting all necessary limit equilibrium stability analysis for the design of the proper remedial measures. The monitoring systems included (a) a number of inclinometers for measuring deep displacements, (b) a number of tell-tale crack meters, to measure the surface movements and (c) piezometers, to control the fluctuation of groundwater level. The recordings of the monitoring systems showed a

  9. Case Study of Urban Residential Remediation and Restoration in Port Hope, Canada - 13250

    SciTech Connect

    Geddes, Brian; DeJong, John; Owen, Michael

    2013-07-01

    The Canadian Municipality of Port Hope, Ontario, is located some 100 km east of Toronto and has been the location of radium and/or uranium refining since the 1930's. Historically, these activities involved materials containing radium-226, uranium, arsenic and other contaminants generated by the refining process. In years past, properties and sites in Port Hope became contaminated from spillage during transportation, unrecorded, un-monitored or unauthorized diversion of contaminated fill and materials, wind and water erosion and spread from residue storage areas. Residential properties in Port Hope impacted by radioactive materials are being addressed by the Canadian federal government under programs administered by the Low-Level Radioactive Waste Management Office (LLRWMO) and the Port Hope Area Initiative Management Office (PHAIMO). Issues that currently arise at these properties are addressed by the LLRWMO's Interim Waste Management Program (IWM). In the future, these sites will be included in the PHAIMO's Small Scale Sites (SSS) remedial program. The LLRWMO has recently completed a remediation and restoration program at a residential property in Port Hope that has provided learnings that will be applicable to the PHAIMO's upcoming SSS remedial effort. The work scope at this property involved remediating contaminated refinery materials that had been re-used in the original construction of the residence. Following removal of the contaminated materials, the property was restored for continued residential use. This kind of property represents a relatively small, but potentially challenging subset of the portfolio of sites that will eventually be addressed by the SSS program. (authors)

  10. The Experiences of Remedial Instructors at One Urban Community College: A Case Study

    ERIC Educational Resources Information Center

    Liburd-Shaddai, Jean L.

    2012-01-01

    The number of incoming community college students, including recent high school graduates as well as nontraditional students, requiring remediation has increased dramatically in recent years. As a result, community colleges are mandated by the state to implement developmental programs to address the diverse academic needs of their students.…

  11. Correlation between the number of Pro-Ala repeats in the EmrA homologue of Acinetobacter baumannii and resistance to netilmicin, tobramycin, imipenem and ceftazidime.

    PubMed

    Nowak-Zaleska, Alicja; Wieczór, Miłosz; Czub, Jacek; Nierzwicki, Łukasz; Kotłowski, Roman; Mikucka, Agnieszka; Gospodarek, Eugenia

    2016-12-01

    Acinetobacter baumannii coccobacilli are dangerous to patients in intensive care units because of their multidrug resistance to antibiotics, developed mainly in the past decade. This study aimed to examine whether there is a significant correlation between the number of Pro-Ala repeats in the CAP01997 protein, the EmrA homologue of A. baumannii, and resistance to antibiotics. A total of 79 multidrug-resistant A. baumannii strains isolated from patients were analysed. Resistance to antibiotics was determined on Mueller-Hinton agar plates using the Kirby-Bauer disk diffusion method. The number of CCTGCA repeats encoding Pro-Ala repeats in CAP01997 was determined by PCR and capillary electrophoresis. The 3D models of CAP01997 containing Pro-Ala repeats were initially generated using RaptorX Structure Prediction server and were assembled with EasyModeller 4.0. The models were embedded in a model bacterial membrane based on structural information from homologous proteins and were refined using 100-ns molecular dynamics simulations. The results of this research show significant correlation between susceptibility to netilmicin, tobramycin and imipenem and the number of repeated Pro-Ala sequences in the CAP01997 protein, a homologue of the Escherichia coli transporter EmrA. Predicted structures suggest potential mechanisms that confer drug resistance by reshaping the cytoplasmic interface between CAP01997 protein and the critical component of the multidrug efflux pump homologous to EmrB. Based on these results, we can conclude that the CAP01997 protein, an EmrA homologue of A. baumannii, confers resistance to netilmicin, tobramycin and imipenem, depending on the number of Pro-Ala repeats.

  12. The use of historical imagery in the remediation of an urban hazardous waste site

    USGS Publications Warehouse

    Slonecker, E.T.

    2011-01-01

    The information derived from the interpretation of historical aerial photographs is perhaps the most basic multitemporal application of remote-sensing data. Aerial photographs dating back to the early 20th century can be extremely valuable sources of historical landscape activity. In this application, imagery from 1918 to 1927 provided a wealth of information about chemical weapons testing, storage, handling, and disposal of these hazardous materials. When analyzed by a trained photo-analyst, the 1918 aerial photographs resulted in 42 features of potential interest. When compared with current remedial activities and known areas of contamination, 33 of 42 or 78.5% of the features were spatially correlated with areas of known contamination or other remedial hazardous waste cleanup activity. ?? 2010 IEEE.

  13. The use of historical imagery in the remediation of an urban hazardous waste site

    USGS Publications Warehouse

    Slonecker, E.T.

    2011-01-01

    The information derived from the interpretation of historical aerial photographs is perhaps the most basic multitemporal application of remote-sensing data. Aerial photographs dating back to the early 20th century can be extremely valuable sources of historical landscape activity. In this application, imagery from 1918 to 1927 provided a wealth of information about chemical weapons testing, storage, handling, and disposal of these hazardous materials. When analyzed by a trained photo-analyst, the 1918 aerial photographs resulted in 42 features of potential interest. When compared with current remedial activities and known areas of contamination, 33 of 42 or 78.5% of the features were spatially correlated with areas of known contamination or other remedial hazardous waste cleanup activity.

  14. Spatial and temporal variation of freely dissolved polycyclic aromatic hydrocarbons in an urban river undergoing Superfund remediation

    SciTech Connect

    Aregory James Sower; Kim A. Anderson

    2008-12-15

    Urban rivers with a history of industrial use can exhibit spatial and temporal variations in contaminant concentrations that may significantly affect risk evaluations and even the assessment of remediation efforts. Concentrations of 15 biologically available priority pollutant polycyclic aromatic hydrocarbons (PAHs) were measured over five years along 18.5 miles of the lower Willamette River using passive sampling devices and HPLC. The study area includes the Portland Harbor Superfund megasite with several PAH sources including remediation operations for coal tar at RM 6.3 west and an additional Superfund site, McCormick and Baxter, at RM 7 east consisting largely of creosote contamination. Study results show that organoclay capping at the McCormick and Baxter Superfund Site reduced PAHs from a precap average of 440 {+-} 422 ng/L to 8 {+-} 3 ng/L postcapping. Results also reveal that dredging of submerged coal tar nearly tripled nearby freely dissolved PAH concentrations. For apportioning sources, fluoranthene/pyrene and phenanthrene/anthracene diagnostic ratios from passive sampling devices were established for creosote and coal tar contamination and compared to published sediment values. 29 refs., 3 figs., 3 tabs.

  15. Spatial and temporal variation of freely dissolved polycyclic aromatic hydrocarbons in an urban river undergoing Superfund remediation.

    PubMed

    Sower, Gregory James; Anderson, Kim A

    2008-12-15

    Urban rivers with a history of industrial use can exhibit spatial and temporal variations in contaminant concentrations that may significantly affect risk evaluations and even the assessment of remediation efforts. Concentrations of 15 biologically available priority pollutant polycyclic aromatic hydrocarbons (PAHs) were measured over five years along 18.5 miles of the lower Willamette River using passive sampling devices and HPLC. The study area includes the Portland Harbor Superfund megasite with several PAH sources including remediation operations for coal tar at RM 6.3 west and an additional Superfund site, McCormick and Baxter, at RM 7 east consisting largely of creosote contamination. Study results show that organoclay capping at the McCormick and Baxter Superfund Site reduced PAHs from a precap average of 440 +/- 422 ng/L to 8 +/- 3 ng/L postcapping. Results also reveal that dredging of submerged coal tar nearly tripled nearby freely dissolved PAH concentrations. For apportioning sources, fluoranthene/pyrene and phenanthrene/anthracene diagnostic ratios from passive sampling devices were established for creosote and coal tar contamination and compared to published sediment values.

  16. Wildlife friendly roads: the impacts of roads on wildlife in urban areas and potential remedies

    USGS Publications Warehouse

    Riley, Seth P D; Brown, Justin L.; Sikich, Jeff A.; Schoonmaker, Catherine M.; Boydston, Erin E.

    2014-01-01

    Roads are one of the most important factors affecting the ability of wildlife to live and move within an urban area. Roads physically replace wildlife habitat and often reduce habitat quality nearby, fragment the remaining habitat, and cause increased mortality through vehicle collisions. Much ecological research on roads has focused on whether animals are successfully crossing roads, or if the road is a barrier to wildlife movement, gene flow, or functional connectivity. Roads can alter survival and reproduction for wildlife, even among species such as birds that cross roads easily. Here we examine the suite of potential impacts of roads on wildlife, but we focus particularly on urban settings. We report on studies, both in the literature and from our own experience, that have addressed wildlife and roads in urban landscapes. Although road ecology is a growing field of study, relatively little of this research, and relatively few mitigation projects, have been done in urban landscapes. We also draw from the available science on road impacts in rural areas when urban case studies have not fully addressed key topics.

  17. The Challenges Of Investigating And Remediating Port Hope's Small-Scale Urban Properties - 13115

    SciTech Connect

    Veen, Walter van; Case, Glenn; Benson, John; Herod, Judy; Yule, Adam

    2013-07-01

    An important component of the Port Hope Project, the larger of the two projects comprising the Port Hope Area Initiative (PHAI), is the investigation of all 4,800 properties in the Municipality of Port Hope for low level radioactive waste (LLRW) and the remediation of approximately 10% of these. Although the majority of the individual properties are not expected to involve technically sophisticated remediation programs, the large number of property owners and individually unique properties are expected to present significant logistic challenges that will require a high degree of planning, organization and communication. The protocol and lessons learned described will be of interest to those considering similar programs. Information presented herein is part of a series of papers presented by the PHAI Management Office (PHAI MO) at WM Symposium '13 describing the history of the Port Hope Project and current project status. Other papers prepared for WM Symposium '13 address the large-scale site cleanup and the construction of the long-term waste management facility (LTWMF) where all of the LLRW will be consolidated and managed within an engineered, above-ground mound. (authors)

  18. Renewable Energy Production and Urban Remediation: Modeling the biogeochemical cycle at contaminated urban brownfields and the potential for renewable energy production and mitigation of greenhouse gases

    NASA Astrophysics Data System (ADS)

    Gopalakrishnan, G.

    2014-12-01

    Brownfields or urban sites that have been contaminated as a result of historic practices are present throughout the world. In the United States alone, the National Research Council has estimated that there are approximately 300,000 to 400,000 sites which have been contaminated by improper use and disposal of chemicals (NRC 1993). The land available at these sites is estimated at several million acres; however, the presence of high levels of contamination in the soil and groundwater makes it difficult to utilize these sites for traditional purposes such as agriculture. Further, the time required to remediate these contaminants to regulated levels is in the order of decades, which often results in long-term economic consequences for the areas near these sites. There has been significant interest in developing these sites as potential sources of renewable energy production in order to increase the economic viability of these sites and to provide alternative land resources for renewable energy production (EPA 2012). Solar energy, wind energy, and bioenergy from lignocellulosic biomass production have been identified as the main sources of renewable energy that can be produced at these locations. However, the environmental impacts of such a policy and the implications for greenhouse gas emissions, particularly resulting from changes in land-use impacting the biogeochemical cycle at these sites, have not been studied extensively to date. This study uses the biogeochemical process-based model DNDC to simulate carbon sequestration, nitrous oxide emissions and methane emissions from typical urban brownfield systems in the United States, when renewable energy systems are deployed. Photovoltaic solar energy and lignocellulosic biomass energy systems are evaluated here. Plants modeled include those most widely used for both bioenergy and remediation such as woody trees. Model sensitivity to soil conditions, contaminant levels and local weather data and the resulting impacts on

  19. History of New Bedford Harbor: Ecological consequences of urbanization and implications for remediation

    SciTech Connect

    Voyer, R.A.; Pesch, C.; Garber, J.; Cabral, S.; Copeland, J.; Comeleo, R.

    1995-12-31

    New Bedford, Massachusetts is the product of {approximately}300 years of agricultural, commercial and industrial activities. Located on the Acushnet River and Buzzard`s Bay, New Bedford is renowned as a former whaling center and former producer of fine quality textiles. It has, however, gained notoriety as a Superfund site contaminated with PCBs. The historical research enhances understanding of sources of cumulative ecological impacts in the Acushnet River estuary. Stressors are reviewed and impacts interpreted in terms of geographic and cultural considerations aided by geographic information system techniques, Analysis of information reveals four sequential developmental periods, each with a distinctive effect an estuarine conditions. Changes in coastline morphology and loss of habitat accompanied wharf building during the whaling period. Wetlands were filled and became building sites during the textile phase. A six-fold population increase between 1870 and 1920 accompanied expansion of textile industry and resulted in increased nutrient loading and raw sewage discharge to the estuary. Shellfish beds were closed throughout estuary in 1904, due to outbreaks of typhoid fever. They remain closed. During the post-textile period, discharge of PCBs further limited fishing in New Bedford and presently restricts harbor restoration. Construction of a hurricane barrier to protect the fishing fleet and city further altered estuarine hydrology. This historical analysis represents a significant adjunct to scientific examination of this site and provides a valuable context for design and conduct of remediation activities.

  20. Long term impacts of combined sewer overflow remediation on water quality and population dynamics of Culex quinquefasciatus, the main urban West Nile virus vector in Atlanta, GA.

    PubMed

    Lund, Andrea; McMillan, Joseph; Kelly, Rosmarie; Jabbarzadeh, Shirin; Mead, Daniel G; Burkot, Thomas R; Kitron, Uriel; Vazquez-Prokopec, Gonzalo M

    2014-02-01

    Combined sewers are a significant source of urban water pollution due to periodic discharges into natural streams. Such events (called combined sewer overflows, or CSOs) contribute to the impairment of natural waterways and are associated with increased mosquito productivity and elevated risk of West Nile virus transmission. We investigated the impact of CSOs on water quality and immature mosquito productivity in the city of Atlanta, Georgia, one year before and four years after CSO facility remediation. Water quality (ammonia, phosphate, nitrate and dissolved oxygen concentrations), immature mosquitoes (larvae and pupae), water temperature and rainfall were quantified biweekly between June-October at two urban creeks during 2008-2012. A before-after control-intervention design tested the impact of remediation on mosquito productivity and water quality, whereas generalized linear mixed-effect models quantified the factors explaining the long term impacts of remediation on mosquito productivity. Ammonia and phosphate concentrations and late immature (fourth-instar and pupae) mosquito populations were significantly higher in CSO than in non-CSO creeks, while dissolved oxygen concentrations were lower. Remediation significantly improved water quality estimates (particularly ammonia and dissolved oxygen) and reduced the number of overflows, mosquito productivity and the overall contribution of CSO-affected streams as sources of vectors of West Nile virus. The quality of water in CSOs provided a suitable habitat for immature mosquitoes. Remediation of the CSO facility through the construction of a deep storage tunnel improved water quality indices and reduced the productivity of mosquito species that can serve as vectors of West Nile virus. Copyright © 2013 Elsevier Inc. All rights reserved.

  1. Use of biosurfactants from urban wastes compost in textile dyeing and soil remediation.

    PubMed

    Montoneri, Enzo; Boffa, Vittorio; Savarino, Piero; Tambone, Fulvia; Adani, Fabrizio; Micheletti, Luca; Gianotti, Carlo; Chiono, Roberto

    2009-01-01

    A compost isolated humic acid-like (cHAL) material was pointed out in previous work for its potential as auxiliary in chemical technology. Its potential is based on its relatively low 0.4gL(-1) critical micellar concentration (cmc) in water, which enables cHAL to enhance the water solubility of hydrophobic substances, like phenanthrene, when used at higher concentrations than 0.4gL(-1). This material could be obtained from a 1:1 v/v mixture of municipal solid and lignocellulosic wastes composted for 15 days. The compost, containing 69.3% volatile solids, 39.6% total organic C and 21C/N ratio, was extracted for 24h at 65 degrees C under N2 with aqueous 0.1molL(-1) NaOH and 0.1molL(-1) Na4P2O7, and the solution was acidified to separate the precipitated cHAL in 12% yield from soluble carbohydrates and other humic and non-humic substances. In this work two typical applications of surfactants, i.e., textile dyeing (TD) and soil remediation by washing (SW), were chosen as grounds for testing the performance of the cHAL biosurfactant against the one of sodium dodecylsulfate (SDS), which is a well established commercial synthetic surfactant. The TD trials were carried out with nylon 6 microfiber and a water insoluble dye, while the SW tests were performed with two soils contaminated by polycyclic aromatic hydrocarbons (PAH) for several decades. Performances were rated in the TD experiments based on the fabric colour intensity (DeltaE) and uniformity (sigmaDeltaE), and in the SW experiments based on the total hydrocarbons concentration (CWPAH) and on the residual surfactant (Cre) concentrations in the washing solution equilibrated with the contaminated soils. The results show that both cHAL and SDS exhibit enhanced performance when applied above their cmc values. However, while in the TD case a significant performance effect was observed at the surfactants cmc value, in the SW case the required surfactants concentration values were equivalent to 25-125xcmc for cHAL and to

  2. Soil solution interactions may limit Pb remediation using P amendments in an urban soil.

    PubMed

    Obrycki, John F; Scheckel, Kirk G; Basta, Nicholas T

    2017-01-01

    Lead (Pb) contaminated soils are a potential exposure hazard to the public. Amending soils with phosphorus (P) may reduce Pb soil hazards. Soil from Cleveland, OH containing 726 ± 14 mg Pb kg(-1) was amended in a laboratory study with bone meal and triple super phosphate (TSP) at 5:1 P:Pb molar ratios. Soil was acidified, neturalized and re-acidified to encourage Pb phosphate formation. PRSTM-probes were used to evaluate changes in soil solution chemistry. Soil acidification did not decrease in vitro bioaccessible (IVBA) Pb using either a pH 1.5, 0.4 M glycine solution or a pH 2.5 solution with organic acids. PRSTM-probe data found soluble Pb increased 10-fold in acidic conditions compared to circumnetural pH conditions. In acidic conditions (p = 3-4), TSP treated soils increased detected P 10-fold over untreated soils. Bone meal application did not increase PRSTM-probe detected P, indicating there may have been insufficient P to react with Pb. X-ray absorption spectroscopy suggested a 10% increase in pyromorphite formation for the TSP treated soil only. Treatments increased soil electrical conductivity above 16 mS cm(-1), potentially causing a new salinity hazard. This study used a novel approach by combining the human ingestion endpoint, PRSTM-probes, and X-ray absorption spectroscopy to evaluate treatment efficacy. PRSTM-probe data indicated potentially excess Ca relative to P across incubation steps that could have competed with Pb for soluble P. More research is needed to characterize soil solutions in Pb contaminated urban soils to identify where P treatments might be effective and when competing cations, such as Ca, Fe, and Zn may limit low rate P applications for treating Pb soils.

  3. Soil solution interactions may limit Pb remediation using P amendments in an urban soil

    SciTech Connect

    Obrycki, John F.; Scheckel, Kirk G.; Basta, Nicholas T.

    2017-01-01

    Lead (Pb) contaminated soils are a potential exposure hazard to the public. Amending soils with phosphorus (P) may reduce Pb soil hazards. Soil from Cleveland, OH containing 726 ± 14 mg Pb kg-1 was amended in a laboratory study with bone meal and triple super phosphate (TSP) at 5:1 P:Pb molar ratios. Soil was acidified, neturalized and re-acidified to encourage Pb phosphate formation. PRSTM-probes were used to evaluate changes in soil solution chemistry. Soil acidification did not decrease in vitro bioaccessible (IVBA) Pb using either a pH 1.5, 0.4 M glycine solution or a pH 2.5 solution with organic acids. PRSTM-probe data found soluble Pb increased 10-fold in acidic conditions compared to circumnetural pH conditions. In acidic conditions (p = 3-4), TSP treated soils increased detected P 10-fold over untreated soils. Bone meal application did not increase PRSTM-probe detected P, indicating there may have been insufficient P to react with Pb. X-ray absorption spectroscopy suggested a 10% increase in pyromorphite formation for the TSP treated soil only. Treatments increased soil electrical conductivity above 16 mS cm-1, potentially causing a new salinity hazard. This study used a novel approach by combining the human ingestion endpoint, PRSTM-probes, and X-ray absorption spectroscopy to evaluate treatment efficacy. PRSTM-probe data indicated potentially excess Ca relative to P across incubation steps that could have competed with Pb for soluble P. More research is needed to characterize soil solutions in Pb contaminated urban soils to identify where P treatments might be effective and when competing cations, such as Ca, Fe, and Zn may limit low rate P applications for treating Pb soils.

  4. 24 CFR 590.31 - Corrective and remedial action.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 3 2010-04-01 2010-04-01 false Corrective and remedial action. 590.31 Section 590.31 Housing and Urban Development Regulations Relating to Housing and Urban Development... URBAN DEVELOPMENT COMMUNITY FACILITIES URBAN HOMESTEADING § 590.31 Corrective and remedial action....

  5. 24 CFR 902.81 - Resident petitions for remedial action.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 4 2013-04-01 2013-04-01 false Resident petitions for remedial action. 902.81 Section 902.81 Housing and Urban Development REGULATIONS RELATING TO HOUSING AND URBAN... URBAN DEVELOPMENT PUBLIC HOUSING ASSESSMENT SYSTEM PHAS Incentives and Remedies § 902.81...

  6. THERMAL REMEDIATION

    EPA Science Inventory

    Thermal remediation is being proposed by Region I for remediation of the overburden soil and groundwater at the Solvent Recovery Services New England Superfund site. This presentation at the public meeting will acquaint area residents with thermal remediation. The two types of ...

  7. THERMAL REMEDIATION

    EPA Science Inventory

    Thermal remediation is being proposed by Region I for remediation of the overburden soil and groundwater at the Solvent Recovery Services New England Superfund site. This presentation at the public meeting will acquaint area residents with thermal remediation. The two types of ...

  8. Remediation of Highland Drive Landfill: Technical Challenges of Segregating Co-Mingled LLRW and Municipal Solid Waste in an Urbanized Area - 13319

    SciTech Connect

    Daniel, Jeff; Lawrence, Dave; Case, Glenn; Fergusson Jones, Andrea

    2013-07-01

    Highland Drive Landfill is an inactive Municipal Solid Waste (MSW) Landfill which received waste from the 1940's until its closure in 1991. During a portion of its active life, the Landfill received low-level radioactive waste (LLRW) which currently exists both in a defined layer and co-mingled with MSW. Remediation of this site to remove the LLRW to meet established cleanup criteria, forms part of the Port Hope Project being undertaken by Atomic Energy Canada Limited (AECL) and Public Works and Government Services Canada (PWGSC) as part of the Port Hope Area Initiative (PHAI). The total volume of LLRW and co-mingled LLRW/MSW estimated to require removal from the Highland Drive Landfill is approximately 51,900 cubic metres (m{sup 3}). The segregation and removal of LLRW at the Highland Drive Landfill presents a number of unique technical challenges due to the co-mingled waste and location of the Landfill in an urbanized area. Key challenges addressed as part of the design process included: delineation of the extent of LLRW, development of cut lines, and estimation of the quantity of co-mingled LLRW in a heterogeneous matrix; protection of adjacent receptors in a manner which would not impact the use of adjacent facilities which include residences, a recreational facility, and a school; coordination and phasing of the work to allow management of six separate material streams including clean soil, MSW, co-mingled LLRW/MSW, LLRW, un-impacted water, and impacted water/leachate within a confined environment; and development of a multi-tiered and adaptive program of monitoring and control measures for odour, dust, and water including assessment of risk of exceedance of monitoring criteria. In addition to ensuring public safety and protection of the environment during remedy implementation, significant effort in the design process was paid to balancing the advantages of increased certainty, including higher production rates, against the costs of attaining increased

  9. 24 CFR 4.38 - Administrative remedies.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Administrative remedies. 4.38 Section 4.38 Housing and Urban Development Office of the Secretary, Department of Housing and Urban Development HUD REFORM ACT Prohibition of Advance Disclosure of Funding Decisions § 4.38...

  10. 24 CFR 511.82 - Corrective and remedial actions.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... URBAN DEVELOPMENT SLUM CLEARANCE AND URBAN RENEWAL RENTAL REHABILITATION GRANT PROGRAM Grantee... 24 Housing and Urban Development 3 2014-04-01 2013-04-01 true Corrective and remedial actions. 511.82 Section 511.82 Housing and Urban Development Regulations Relating to Housing and Urban...

  11. 24 CFR 511.82 - Corrective and remedial actions.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... URBAN DEVELOPMENT SLUM CLEARANCE AND URBAN RENEWAL RENTAL REHABILITATON GRANT PROGRAM Grantee... 24 Housing and Urban Development 3 2011-04-01 2010-04-01 true Corrective and remedial actions. 511.82 Section 511.82 Housing and Urban Development Regulations Relating to Housing and Urban...

  12. 24 CFR 511.82 - Corrective and remedial actions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... HOUSING AND URBAN DEVELOPMENT SLUM CLEARANCE AND URBAN RENEWAL RENTAL REHABILITATION GRANT PROGRAM Grantee... 24 Housing and Urban Development 3 2012-04-01 2012-04-01 false Corrective and remedial actions. 511.82 Section 511.82 Housing and Urban Development Regulations Relating to Housing and...

  13. 24 CFR 511.82 - Corrective and remedial actions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... HOUSING AND URBAN DEVELOPMENT SLUM CLEARANCE AND URBAN RENEWAL RENTAL REHABILITATON GRANT PROGRAM Grantee... 24 Housing and Urban Development 3 2010-04-01 2010-04-01 false Corrective and remedial actions. 511.82 Section 511.82 Housing and Urban Development Regulations Relating to Housing and...

  14. 24 CFR 511.82 - Corrective and remedial actions.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... HOUSING AND URBAN DEVELOPMENT SLUM CLEARANCE AND URBAN RENEWAL RENTAL REHABILITATION GRANT PROGRAM Grantee... 24 Housing and Urban Development 3 2013-04-01 2013-04-01 false Corrective and remedial actions. 511.82 Section 511.82 Housing and Urban Development Regulations Relating to Housing and...

  15. Toxic remediation

    DOEpatents

    Matthews, Stephen M.; Schonberg, Russell G.; Fadness, David R.

    1994-01-01

    What is disclosed is a novel toxic waste remediation system designed to provide on-site destruction of a wide variety of hazardous organic volatile hydrocarbons, including but not limited to halogenated and aromatic hydrocarbons in the vapor phase. This invention utilizes a detoxification plenum and radiation treatment which transforms hazardous organic compounds into non-hazardous substances.

  16. Reimagining Remediation

    ERIC Educational Resources Information Center

    Handel, Stephen J.; Williams, Ronald A.

    2011-01-01

    In 2007, the College Board's Community College Advisory Panel--a group of college presidents that advises the organization's membership on community college issues--asked these authors to write a paper describing effective remedial education programs. They never wrote the paper. The problem was not the lack of dedicated faculty and staff working…

  17. 24 CFR 590.31 - Corrective and remedial action.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 3 2011-04-01 2010-04-01 true Corrective and remedial action. 590.31 Section 590.31 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR COMMUNITY PLANNING AND DEVELOPMENT, DEPARTMENT OF HOUSING AND...

  18. Remediation following Man-made or Natural Disasters -Homeland Security Research

    EPA Pesticide Factsheets

    EPA develops procedures mitigate contamination and to remediate the environment following public health and environmental incidents and disasters. Contamination incidents involving urban areas could require the decontamination of

  19. In situ biomonitoring of juvenile Chinook salmon (Onchorhynchus tshawytscha) using biomarkers of chemical exposures and effects in a partially remediated urbanized waterway of the Puget Sound, WA

    SciTech Connect

    Browne, Eva; Kelley, Matthew; Zhou, Guo-Dong; He, Ling Yu; McDonald, Thomas; Wang, Shirley; Duncan, Bruce; Meador, James; Donnelly, Kirby; Gallagher, Evan

    2010-10-15

    In situ biomonitoring has been used to assess the effects of pollution on aquatic species in heavily polluted waterways. In the current study, we used in situ biomonitoring in conjunction with molecular biomarker analysis to determine the effects of pollutant exposure in salmon caged in the Duwamish waterway, a Pacific Northwest Superfund site that has been subject to remediation. The Duwamish waterway is an important migratory route for Pacific salmon and has received historic inputs of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). Juvenile pre-smolt Chinook salmon (Oncorhynchus tshawytscha) caged for 8 days in the three contaminated sites in close proximity within the Duwamish were analyzed for steady state hepatic mRNA expression of 7 exposure biomarker genes encompassing several gene families and known to be responsive to pollutants, including cytochrome P4501A (CYP1A) and CYP2K1, glutathione S-transferase {pi} class (GST-{pi}), microsomal GST (mGST), glutamylcysteine ligase catalytic subunit (GCLC), UDP-glucuronyltransferase family 1 (UDPGT), and type 2 deiodinase (type 2 DI, or D2). Quantitation of gene expression was accomplished by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) in assays developed specifically for Chinook salmon genes. Gill PAH-DNA adducts were assessed as a chemical effects biomarker using {sup 32}P-postlabeling. The biomarkers in the field-caged fish were analyzed with respect to caged animals maintained at the hatchery receiving flow-through water. Chemical analysis of sediment samples from three field sampling sites revealed relatively high concentrations of total PAHs in one site (site B2, 6711 ng/g dry weight) and somewhat lower concentrations of PAHs in two adjacent sites (sites B3 and B4, 1482 and 1987 ng/g, respectively). In contrast, waterborne PAHs at all of the sampling sites were relatively low (<1 ng/L). Sediment PCBs at the sites ranged from a low of 421 ng/g at site B3

  20. In situ biomonitoring of juvenile Chinook salmon (Onchorhynchus tshawytscha) using biomarkers of chemical exposures and effects in a partially remediated urbanized waterway of the Puget Sound, WA.

    PubMed

    Browne, Eva; Kelley, Matthew; Zhou, Guo-Dong; He, Ling Yu; McDonald, Thomas; Wang, Shirley; Duncan, Bruce; Meador, James; Donnelly, Kirby; Gallagher, Evan

    2010-10-01

    In situ biomonitoring has been used to assess the effects of pollution on aquatic species in heavily polluted waterways. In the current study, we used in situ biomonitoring in conjunction with molecular biomarker analysis to determine the effects of pollutant exposure in salmon caged in the Duwamish waterway, a Pacific Northwest Superfund site that has been subject to remediation. The Duwamish waterway is an important migratory route for Pacific salmon and has received historic inputs of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). Juvenile pre-smolt Chinook salmon (Oncorhynchus tshawytscha) caged for 8 days in the three contaminated sites in close proximity within the Duwamish were analyzed for steady state hepatic mRNA expression of 7 exposure biomarker genes encompassing several gene families and known to be responsive to pollutants, including cytochrome P4501A (CYP1A) and CYP2K1, glutathione S-transferase pi class (GST-pi), microsomal GST (mGST), glutamylcysteine ligase catalytic subunit (GCLC), UDP-glucuronyltransferase family 1 (UDPGT), and type 2 deiodinase (type 2 DI, or D2). Quantitation of gene expression was accomplished by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) in assays developed specifically for Chinook salmon genes. Gill PAH-DNA adducts were assessed as a chemical effects biomarker using (32)P-postlabeling. The biomarkers in the field-caged fish were analyzed with respect to caged animals maintained at the hatchery receiving flow-through water. Chemical analysis of sediment samples from three field sampling sites revealed relatively high concentrations of total PAHs in one site (site B2, 6711ng/g dry weight) and somewhat lower concentrations of PAHs in two adjacent sites (sites B3 and B4, 1482 and 1987ng/g, respectively). In contrast, waterborne PAHs at all of the sampling sites were relatively low (<1ng/L). Sediment PCBs at the sites ranged from a low of 421ng/g at site B3 to 1160ng

  1. In situ biomonitoring of juvenile Chinook salmon (Onchorhynchus tshawytscha) using biomarkers of chemical exposures and effects in a partially remediated urbanized waterway of the Puget Sound, WA

    PubMed Central

    Browne, Eva; Kelley, Matthew; Zhou, Guo-Dong; He, Ling Yu; McDonald, Thomas; Wang, Shirley; Duncan, Bruce; Meador, James; Donnelly, Kirby; Gallagher, Evan

    2012-01-01

    In situ biomonitoring has been used to assess the effects of pollution on aquatic species in heavily polluted waterways. In the current study, we used in situ biomonitoring in conjunction with molecular biomarker analysis to determine the effects of pollutant exposure in salmon caged in the Duwamish waterway, a Pacific Northwest Superfund site that has been subject to remediation. The Duwamish waterway is an important migratory route for Pacific salmon and has received historic inputs of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). Juvenile pre-smolt Chinook salmon (Oncorhynchus tshawytscha) caged for 8 days in the three contaminated sites in close proximity within the Duwamish were analyzed for steady state hepatic mRNA expression of 7 exposure biomarker genes encompassing several gene families and known to be responsive to pollutants, including cytochrome P4501A (CYP1A) and CYP2K1, glutathione S-transferase π class (GST pi), microsomal GST (mGST), glutamylcysteine ligase catalytic subunit (GCLC), UDP-glucuronyltransferase family 1 (UDPGT), and type 2 deiodinase (type 2 DI, or D2). Quantitation of gene expression was accomplished by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) in assays developed specifically for Chinook salmon genes. Gill PAH-DNA adducts were assessed as a chemical effects biomarker using 32P-postlabeling. The biomarkers in the field-caged fish were analyzed with respect to caged animals maintained at the hatchery receiving flow-through water. Chemical analysis of sediment samples from three field sampling sites revealed relatively high concentrations of total PAHs in one site (site B2, 6711 ng/g dry weight) and somewhat lower concentrations of PAHs in two adjacent sites (sites B3 and B4, 1482 and 1987 ng/g, respectively). In contrast, waterborne PAHs at all of the sampling sites were relatively low (<1 ng/L). Sediment PCBs at the sites ranged from a low of 421 ng/g at site B3, to 1160

  2. Reinventing Remedial Education

    ERIC Educational Resources Information Center

    Stuart, Reginald

    2009-01-01

    Remedial education, although widely used and disguised with other names, was rarely talked about for it could tarnish a school's reputation if widely discussed. Today, more and more colleges and universities are ditching the old stigma associated with remedial education, reinventing their remedial education and retention programs and, in the…

  3. 24 CFR 1003.703 - Other remedies for noncompliance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR PUBLIC AND INDIAN HOUSING, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT COMMUNITY DEVELOPMENT BLOCK GRANTS FOR INDIAN TRIBES AND ALASKA NATIVE VILLAGES... 24 Housing and Urban Development 4 2010-04-01 2010-04-01 false Other remedies for noncompliance...

  4. 24 CFR 1003.701 - Corrective and remedial action.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR PUBLIC AND INDIAN HOUSING, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT COMMUNITY DEVELOPMENT BLOCK GRANTS FOR INDIAN TRIBES AND ALASKA NATIVE VILLAGES... 24 Housing and Urban Development 4 2010-04-01 2010-04-01 false Corrective and remedial action...

  5. South Avenue Urban Renewal, LLC

    EPA Pesticide Factsheets

    EPA has received an application from South Avenue Urban Renewal, LLC for a risk-based disposal of polychlorinated biphenyl remediation waste at the Garwood Property Site located in Garwood, New Jersey. EPA is accepting comments on the proposed action.

  6. Duct Remediation Program: Remediation operations and implementation

    SciTech Connect

    Beckman, T.d.; Davis, M.M.; Karas, T.M.

    1992-11-01

    Plutonium holdup material has accumulated in the process ventilation duct systems at Rocky Flats. Non-Destructive Assay (NDA) measurements identified ducts containing this material. The Defense Nuclear Facility Safety Board and the Department of Energy established the criteria for remediation of these ducts. A remediation team was assembled and a program plan created. This program plan included activities such as fissile material accumulation identification, criticality safety assessments, radiation dose determinations, facility safety evaluations, prevention of future accumulation, and removal of holdup material. Several operational considerations had to be evaluated in determining completion of remediation.

  7. 24 CFR 1000.530 - What corrective and remedial actions will HUD request or recommend to address performance...

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ....532? 1000.530 Section 1000.530 Housing and Urban Development REGULATIONS RELATING TO HOUSING AND URBAN... § 1000.530 What corrective and remedial actions will HUD request or recommend to address performance...

  8. Designing Clinical Remediation Programs.

    ERIC Educational Resources Information Center

    Oleszewski, Susan C.

    1989-01-01

    Elements and considerations in the provision of effective remediation for optometry students not achieving in clinical competence are discussed. Remediation of technical, cognitive, and noncognitive skills are included. A course in professional communication offered by the Pennsylvania College of Optometry is described. (MSE)

  9. Unconventional cancer remedies.

    PubMed Central

    Danielson, K J; Stewart, D E; Lippert, G P

    1988-01-01

    Unproven and disproven remedies continue to abound for illnesses for which conventional treatment is only partially effective. This is particularly true with cancer, for which up to 50% of patients may be receiving unorthodox therapy. This article examines unconventional cancer remedies, their adverse effects, their common factors and the basis for their appeal, as well as what motivates and characterizes patients who choose these treatments. Also discussed is an approach that may be used by the conventional physician for patients who are likely to seek unorthodox treatment. This approach will help patients make the best decision about their treatment and protect them from the hazards of unconventional remedies. PMID:3285984

  10. Superfund Green Remediation

    EPA Pesticide Factsheets

    Green remediation is the practice of considering all environmental effects of site cleanup and incorporating options – like the use of renewable energy resources – to maximize the environmental benefits of cleanups.

  11. Superfund Green Remediation

    EPA Pesticide Factsheets

    Green remediation is the practice of considering all environmental effects of site cleanup and incorporating options – like the use of renewable energy resources – to maximize the environmental benefits of cleanups.

  12. Remediating Common Math Errors.

    ERIC Educational Resources Information Center

    Wagner, Rudolph F.

    1981-01-01

    Explanations and remediation suggestions for five types of mathematics errors due either to perceptual or cognitive difficulties are given. Error types include directionality problems, mirror writing, visually misperceived signs, diagnosed directionality problems, and mixed process errors. (CL)

  13. Other Remedy Options Evaluated

    EPA Pesticide Factsheets

    EPA considered several remedy options for reducing emissions from electric generating units (EGUs) that contribute significantly to nonattainment or interfere with maintenance of the air quality standards by downwind states.

  14. Development, Discouragement, or Diversion? New Evidence on the Effects of College Remediation Policy

    ERIC Educational Resources Information Center

    Scott-Clayton, Judith; Rodriguez, Olga

    2015-01-01

    Half of all college students will enroll in remedial coursework but evidence of its effectiveness is mixed. Using a regression-discontinuity design with data from a large urban community college system, we make three contributions. First, we articulate three alternative hypotheses regarding the potential impacts of remediation. Second, in addition…

  15. Can Community Colleges Protect Both Access and Standards? The Problem of Remediation

    ERIC Educational Resources Information Center

    Perin, Dolores

    2006-01-01

    A large number of community college students have difficulty with postsecondary-level reading, writing, and math demands, necessitating remedial education. A qualitative case study was conducted to investigate state and institutional practices for remediation in 15 community colleges selected for region, size, and urbanicity. The six states in…

  16. Development, Discouragement, or Diversion? New Evidence on the Effects of College Remediation Policy

    ERIC Educational Resources Information Center

    Scott-Clayton, Judith; Rodriguez, Olga

    2015-01-01

    Half of all college students will enroll in remedial coursework but evidence of its effectiveness is mixed. Using a regression-discontinuity design with data from a large urban community college system, we make three contributions. First, we articulate three alternative hypotheses regarding the potential impacts of remediation. Second, in addition…

  17. Refining Remediation: Support Strategies for At-Risk High School Students in Three Urban Districts. A Report from "The Keep the Promise Initiative"--A Three-Year Longitudinal Study of High School Academic Remediation in Boston, Springfield and Worcester. Fall 2005

    ERIC Educational Resources Information Center

    Mass Insight Education (NJ1), 2005

    2005-01-01

    "Refining Remediation" is the fifth installment from the "Keep the Promise" initiative, a three-year research project led by the Mass Insight Education and Research Institute in conjunction with the Boston, Springfield, and Worcester Public Schools. Since 2003, "Keep the Promise" has been investigating school reform's…

  18. High School Preparation, Placement Testing, and College Remediation.

    ERIC Educational Resources Information Center

    Hoyt, Jeff E.; Sorensen, Colleen T.

    2001-01-01

    Reports that students entering an urban state college still had high remedial placement rates even though they successfully completed college preparatory math and English courses in high school. Discusses the "chain of blame" and concerns regarding the rigor of high school programs. (Contains 45 references.) (AUTH/NB)

  19. Remediation to Restoration to Revitalization - a Path Forward for AOCs?

    EPA Science Inventory

    Remediation and restoration goals for Great Lakes Areas of Concerns (AOCs) are defined by the status of the Beneficial Use Impairments (BUI), or the uses of the Great Lakes ecosystem that have been compromised owing to historical industrial or urban activities. Conceptually, “ben...

  20. Integrating Study Skills and Problem Solving into Remedial Mathematics

    ERIC Educational Resources Information Center

    Cornick, Jonathan; Guy, G. Michael; Beckford, Ian

    2015-01-01

    Students at a large urban community college enrolled in seven classes of an experimental remedial algebra programme, which integrated study skills instruction and collaborative problem solving. A control group of seven classes was taught in a traditional lecture format without study skills instruction. Student performance in the course was…

  1. Remediation; An overview

    SciTech Connect

    Bishop, J.

    1988-09-01

    The U.SD. government began committing the nation legally and financially in the last decade to the ultimate remediation of virtually all of the hazardous wastes that were produced in the past and remain to threaten human health and the environment, all that continue to be generated, and all that will be created in the future. Whether engendered by acts of God or human industry, the laws and regulations mandate, hazardous wastes and the threats they pose will be removed or rendered harmless. As mobilization for tackling the monumental task implied by those commitments has progressed, key concepts have changed in meaning. The remedy of remediation once literally meant burying our hazardous waste problems in landfills, for example, a solution now officially defined as the least desirable-although still commonly chosen - course of action. The process of identifying hazardous substances and determining in what quantities they constitute health and environmental hazards continues apace. As measurement technologies become increasingly precise and capable to detecting more 9s to the right of the decimal point, acceptable levels of emissions into the air and concentrations in the ground or water are reduced. This article is intended as a sketch of where the national commitment of remediation currently stands, with examples of implications for both generators of hazardous wastes and those who have entered-or seek to enter-the rapidly growing business of remediation.

  2. Solutions Remediate Contaminated Groundwater

    NASA Technical Reports Server (NTRS)

    2010-01-01

    During the Apollo Program, NASA workers used chlorinated solvents to clean rocket engine components at launch sites. These solvents, known as dense non-aqueous phase liquids, had contaminated launch facilities to the point of near-irreparability. Dr. Jacqueline Quinn and Dr. Kathleen Brooks Loftin of Kennedy Space Center partnered with researchers from the University of Central Florida's chemistry and engineering programs to develop technology capable of remediating the area without great cost or further environmental damage. They called the new invention Emulsified Zero-Valent Iron (EZVI). The groundwater remediation compound is cleaning up polluted areas all around the world and is, to date, NASA's most licensed technology.

  3. COST OF MTBE REMEDIATION

    EPA Science Inventory

    Widespread contamination of methyl tert-butyl ether (MTBE) in ground water has raised concerns about the increased cost of remediation of MTBE releases compared to BTEX-only sites. To evaluate these cost, cost information for 311 sites was furnished by U.S. EPA Office of Undergr...

  4. Trade Remedies: A Primer

    DTIC Science & Technology

    2005-05-02

    ornamental fish, tilapia , monkfish).36 The European Union proposes to establish an additional 15% tariff on imports of certain women’s apparel, office...which reversed (continued...) ruling.39 Supporters of trade remedies, including many in Congress and domestic industry representatives, believe that

  5. COST OF MTBE REMEDIATION

    EPA Science Inventory

    Widespread contamination of methyl tert-butyl ether (MTBE) in ground water has raised concerns about the increased cost of remediation of MTBE releases compared to BTEX-only sites. To evaluate these cost, cost information for 311 sites was furnished by U.S. EPA Office of Undergr...

  6. Reading Diagnosis and Remediation.

    ERIC Educational Resources Information Center

    Strang, Ruth

    This monograph includes an extensive review and evaluation of the research literature and offers teachers and clinicians background for understanding reading diagnosis, the correlates and causes of reading disabilities, diagnostic techniques, and remediation. The following topics are discussed: (1) the nature and levels of diagnosis, (2) the…

  7. Lau Remedies Outlined.

    ERIC Educational Resources Information Center

    Cardenas, Jose A.

    The understanding of two principles is important if school districts are to develop comprehensive plans responsive to the Lau v. Nichols remedies specified by the Department of Health, Education, and Welfare (HEW) in ways that both adhere to the spirit of the Lau decision and allow the school district to develop coherent educational programs for…

  8. Modularizing Remedial Mathematics

    ERIC Educational Resources Information Center

    Wong, Aaron

    2013-01-01

    As remedial mathematics education has become an increasingly important topic of conversation in higher education. Mathematics departments have been put under increased pressure to change their programs to increase the student success rate. A number of models have been introduced over the last decade that represent a wide range of new ideas and…

  9. 2014 Ohio Remediation Report

    ERIC Educational Resources Information Center

    Ohio Board of Regents, 2014

    2014-01-01

    In fulfillment of Ohio Revised Code 3333.041 (A) (1) the Chancellor has published a listing by school district of the number of the 2013 high school graduates who attended a state institution of higher education in academic year 2013-2014 and the percentage of each district's graduates required by the institution to enroll in a remedial course in…

  10. 24 CFR 982.404 - Maintenance: Owner and family responsibility; PHA remedies.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Dwelling Unit: Housing Quality Standards, Subsidy Standards, Inspection and Maintenance § 982.404... 24 Housing and Urban Development 4 2012-04-01 2012-04-01 false Maintenance: Owner and family responsibility; PHA remedies. 982.404 Section 982.404 Housing and Urban Development REGULATIONS RELATING TO...

  11. 24 CFR 982.404 - Maintenance: Owner and family responsibility; PHA remedies.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Dwelling Unit: Housing Quality Standards, Subsidy Standards, Inspection and Maintenance § 982.404... 24 Housing and Urban Development 4 2011-04-01 2011-04-01 false Maintenance: Owner and family responsibility; PHA remedies. 982.404 Section 982.404 Housing and Urban Development REGULATIONS RELATING TO...

  12. 24 CFR 982.404 - Maintenance: Owner and family responsibility; PHA remedies.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... Dwelling Unit: Housing Quality Standards, Subsidy Standards, Inspection and Maintenance § 982.404... 24 Housing and Urban Development 4 2014-04-01 2014-04-01 false Maintenance: Owner and family responsibility; PHA remedies. 982.404 Section 982.404 Housing and Urban Development REGULATIONS RELATING TO...

  13. Remediation technologies for contaminated sediments

    SciTech Connect

    Swanson, L.M.

    1995-09-01

    Although soil and groundwater remediation has been conducted for many years, sediment remediation is still in its infancy. Regulatory agencies are now beginning to identify areas where contaminated sediments exist and evaluate their environmental impact. As these evaluations are completed, the projects must shift focus to how these sediments can be remediated. Also as the criteria for aquatic disposal of dredged sediments become more stringent, remediation technologies must be developed to address contaminated sediments generated by maintenance dredging.This report describes the various issues and possible technologies for sediment remediation.

  14. Monitoring and remediating groundwater

    SciTech Connect

    Vedder, M.

    1995-03-01

    Choosing the optimum groundwater remediation process is a site-specific task. A variety of factors--including soil type, water type, water flow, water table levels and contaminant type--influence sampling and treatment techniques. Because underground contaminant plumes must first be characterized and mapped, initial sampling often is a hit or miss proposition. Historical geophysical data can be obtained from many local water boards to supplement the process. Equipment used in sampling includes drilling rigs, depth probes, bailers, sample tubing and well pumps. Once samples are collected, they are preserved with ice and transported to an environmental laboratory for analysis. Common groundwater contaminants include hydrocarbons, solvents, metals and volatile organic compounds. Typical lab analysis methods include gas chromatography and spectrometry. Remediation options include air stripping, carbon adsorption, the use of bacterial cultures, chemical precipitation, ion exchange, reverse osmosis and ultrafiltration.

  15. Remediation Technology Collaboration Development

    NASA Technical Reports Server (NTRS)

    Mahoney, John; Olsen, Wade

    2010-01-01

    This slide presentation reviews programs at NASA aimed at development at Remediation Technology development for removal of environmental pollutants from NASA sites. This is challenging because there are many sites with different environments, and various jurisdictions and regulations. There are also multiple contaminants. There must be different approaches based on location and type of contamination. There are other challenges: such as costs, increased need for resources and the amount of resources available, and a regulatory environment that is increasing.

  16. Trade Remedies: A Primer

    DTIC Science & Technology

    2008-07-30

    Developing nations, such as India and South Africa , had begun using trade remedy actions more frequently, whereas they were tools used almost exclusively...CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7. PERFORMING...group of products are minerals and metals (such as brass sheet and strip; gray portland cement and clinker ; magnesium). The fourth largest group

  17. Remediating munitions contaminated soils

    SciTech Connect

    Shea, P.J.; Comfort, S.D.

    1995-10-01

    The former Nebraska Ordnance Plant (NOP) at Mead, NE was a military loading, assembling, and packing facility that produced bombs, boosters and shells during World War II and the Korean War (1942-1945, 1950-1956). Ordnances were loaded with 2,4,6-trinitrotoluene (TNT), amatol (TNT and NH{sub 4}NO{sub 3}), tritonal (TNT and Al) and Composition B (hexahydro-1,3,5-trinitro-1,3,5-triazine [RDX] and TNT). Process waste waters were discharged into wash pits and drainage ditches. Soils within and surrounding these areas are contaminated with TNT, RDX and related compounds. A continuous core to 300 cm depth obtained from an NOP drainage ditch revealed high concentrations of TNT in the soil profile and substantial amounts of monoamino reduction products, 4-amino-2,6-dinitrotoluene (4ADNT) and 2-amino-4,6-dinitrotoluene (2ADNT). Surface soil contained TNT in excess of 5000 mg kg{sup -1} and is believed to contain solid phase TNT. This is supported by measuring soil solution concentrations at various soil to solution ratios (1:2 to 1:9) and obtaining similar TNT concentrations (43 and 80 mg L{sup -1}). Remediating munitions-contaminated soil at the NOP and elsewhere is of vital interest since many of the contaminants are carcinogenic, mutagenic or otherwise toxic to humans and the environment. Incineration, the most demonstrated remediation technology for munitions-containing soils, is costly and often unacceptable to the public. Chemical and biological remediation offer potentially cost-effective and more environmentally acceptable alternatives. Our research objectives are to: (a) characterize the processes affecting the transport and fate of munitions in highly contaminated soil; (b) identify effective chemical and biological treatments to degrade and detoxify residues; and (c) integrate these approaches for effective and practical remediation of soil contaminated with TNT, RDX, and other munitions residues.

  18. Trade Remedies: A Primer

    DTIC Science & Technology

    2006-06-14

    Agricultural products are the second largest category, including asparagus , mushrooms, shrimp, honey, roses, and cut flowers. It appears, generally, that a...on the manufacture, production , or export of the merchandise, and the ITC determines injury. U.S. safeguard laws (19 U.S.C. 2251 et seq.) authorize...Remedy Laws . . . . . . . . . . . . . . . . . . . . . . . 29 List of Figures Figure 1. AD and CVD Orders in Place by Product Group

  19. CENTRAL PLATEAU REMEDIATION

    SciTech Connect

    ROMINE, L.D.

    2006-02-01

    A systematic approach to closure planning is being implemented at the Hanford Site's Central Plateau to help achieve the goal of closure by the year 2035. The overall objective of Central Plateau remediation is to protect human health and the environment from the significant quantity of contaminated material that resulted from decades of plutonium production in support of the nation's defense. This goal will be achieved either by removing contaminants or placing the residual contaminated materials in a secure configuration that minimizes further migration to the groundwater and reduces the potential for inadvertent intrusion into contaminated sites. The approach to Central Plateau cleanup used three key concepts--closure zones, closure elements, and closure process steps--to create an organized picture of actions required to complete remediation. These actions were merged with logic ties, constraints, and required resources to produce an integrated time-phased schedule and cost profile for Central Plateau closure. Programmatic risks associated with implementation of Central Plateau closure were identified and analyzed. Actions to mitigate the most significant risks are underway while high priority remediation projects continue to make progress.

  20. 24 CFR 1000.530 - What corrective and remedial actions will HUD request or recommend to address performance...

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ....532 or § 1000.538? 1000.530 Section 1000.530 Housing and Urban Development REGULATIONS RELATING TO..., Oversight and Accountability § 1000.530 What corrective and remedial actions will HUD request or recommend...

  1. Development, Discouragement, or Diversion? New Evidence on the Effects of College Remediation. NBER Working Paper No. 18328

    ERIC Educational Resources Information Center

    Scott-Clayton, Judith; Rodriguez, Olga

    2012-01-01

    Half of all college students take at least one remedial course as part of their postsecondary experience, despite mixed evidence on the effectiveness of this intervention. Using a regression-discontinuity design with data from a large urban community college system, we extend the research on remediation in three ways. First, we articulate three…

  2. Compost improves compacted urban soil

    USDA-ARS?s Scientific Manuscript database

    Urban construction sites usually result in compacted soils that limit infiltration and root growth. The purpose of this study was to determine if compost, aeration, and/or prairie grasses can remediate a site setup as a simulated post-construction site (compacted). Five years after establishing the ...

  3. Remediation to improve infiltration into compact soils.

    PubMed

    Olson, Nicholas C; Gulliver, John S; Nieber, John L; Kayhanian, Masoud

    2013-03-15

    Urban development usually involves soil compaction through converting large pervious land into developed land. This change typically increases runoff during runoff events and consequently may add to flooding and additional volume of runoff. The wash off of pollutants may also create numerous water quality and environmental problems for receiving waters. To alleviate this problem many municipalities are considering low impact development. One technique to reduce runoff in an urban area is to improve the soil infiltration. This study is specifically undertaken to investigate tilling and compost addition to improve infiltration rate, and to investigate measurement tools to assess the effectiveness of remediated soil. Soil remediation was performed at three sites in an urban area metropolitan area. Each site was divided into three plots: tilled, tilled with compost addition, and a control plot with no treatment. The infiltration effectiveness within each plot was assessed by measuring saturated hydraulic conductivity (K(sat)) using the modified Philip Dunne (MPD) infiltrometer during pre- and post-treatment. In addition, the use of soil bulk density and soil strength as surrogate parameters for K(sat) was investigated. Results showed that deep tillage was effective at reducing the level of soil strength. Soil strength was approximately half that of the control plot in the first six inches of soil. At two of the sites, tilling was also ineffective at improving the infiltration capacity of the soil. The geometric mean of K(sat) was 0.5-2.3 times that of the control plot, indicating little overall improvement. Compost addition was more effective than tilling by reducing the soil strength and compaction and increasing soil infiltration. The geometric mean of K(sat) on the compost plots was 2.7-5.7 times that of the control plot. No strong correlations were observed before remediation between either soil bulk density or soil strength and K(sat). Simulation results showed

  4. Determining priorities of a remediation plan at urban scale by assessing the risk of metals and POPs for local population: The Acerra-Pomigliano-Marigliano conurbation case study in Italy.

    NASA Astrophysics Data System (ADS)

    Albanese, Stefano; Lima, Annamaria; Rezza, Carmela; Qi, Shihua; Qu, Chengkai; Chen, Wei; De Vivo, Benedetto

    2015-04-01

    In the framework of the URGE (Urban Geochemistry) project aiming at depicting the environmental conditions of several cities in Europe, the north-eastern sector of the Naples metropolitan area (Italy), namely the Acerra-Pomigliano-Marigliano area (with ~160.000 inhabitants), has undergone a geochemical characterization based on topsoil sampling (145 samples over an area of 90 sqkm). The conurbation includes 6 municipalities (Acerra, Pomigliano D'Arco, Castello di Cisterna, Brusciano, Mariglianella and Marigliano) and considering the total extension of the urbanized areas (18-20 sqkm) the average population density could be corrected to 6-7000 inhabitants/sqkm. Soils of the area are mostly originated by the pedogenenesis of the original pyroclastics produced by the Mt. Somma-Vesuvius volcano on the south-western side of the study area. The area has been selected because of both the presence of an historical industrial settlement on it (mainly devoted to plastic materials and synthetic fibers production) and of an incinerator which came into operation in March 2009. The main objective of the study was 1) to define the local geochemical baselines both for 53 elements (among which the toxic ones) and for some organic compounds, including PAHs, PCBs and OCPs and 2) to assess the environmental risk generated by polluted soils. Furthermore, the study aimed at supporting epidemiological researches and at establishing a record of the environmental status quo ante to evaluate in the future the impact of the incinerator on life quality and on health of local population. Obtained results showed that most of the urbanized areas of the Acerra-Pomigliano-Marigliano conurbations are characterized by concentrations of Pb, Zn and V exceeding the intervention limits established by the Italian Environmental law (D.Lgs. 152/2006). Agricultural soils, in the surroundings of the urbanized areas, are enriched in Cu, Co, Cd, Be and Ni, and the probable presence of illegal waste disposals

  5. Integrated in-situ remediation

    SciTech Connect

    Fustos, V.; Lieberman, P.

    1996-01-01

    This article presents an integrated approach to ex-situ and in-situ remediation. A sequence of processes, used successfully in their own right, but used synergistically in this approach, have achieved short-term, economic remediation. In addition the range of contaminants that can be treated is extended. The Process uses ozone, compressed oxygen, water vapor, heat, bioaugmentation and vapor extraction to remediate lower molecular weight hydrocarbons and higher molecular weight hydrocarbons. 3 figs.

  6. [Cognitive remediation and nursing care].

    PubMed

    Schenin-King, Palmyre; Thomas, Fanny; Braha-Zeitoun, Sonia; Bouaziz, Noomane; Januel, Dominique

    2016-01-01

    Therapies based on cognitive remediation integrate psychiatric care. Cognitive remediation helps to ease cognitive disorders and enable patients to improve their day-to-day lives. It is essential to complete nurses' training in this field. This article presents the example of a patient with schizophrenia who followed the Cognitive Remediation Therapy programme, enabling him to access mainstream employment. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  7. Electrokinetic remediation prefield test methods

    NASA Technical Reports Server (NTRS)

    Hodko, Dalibor (Inventor)

    2000-01-01

    Methods for determining the parameters critical in designing an electrokinetic soil remediation process including electrode well spacing, operating current/voltage, electroosmotic flow rate, electrode well wall design, and amount of buffering or neutralizing solution needed in the electrode wells at operating conditions are disclosed These methods are preferably performed prior to initiating a full scale electrokinetic remediation process in order to obtain efficient remediation of the contaminants.

  8. CENTRAL PLATEAU REMEDIATION OPTIMIZATION STUDY

    SciTech Connect

    BERGMAN, T. B.; STEFANSKI, L. D.; SEELEY, P. N.; ZINSLI, L. C.; CUSACK, L. J.

    2012-09-19

    THE CENTRAL PLATEAU REMEDIATION OPTIMIZATION STUDY WAS CONDUCTED TO DEVELOP AN OPTIMAL SEQUENCE OF REMEDIATION ACTIVITIES IMPLEMENTING THE CERCLA DECISION ON THE CENTRAL PLATEAU. THE STUDY DEFINES A SEQUENCE OF ACTIVITIES THAT RESULT IN AN EFFECTIVE USE OF RESOURCES FROM A STRATEGIC PERSPECTIVE WHEN CONSIDERING EQUIPMENT PROCUREMENT AND STAGING, WORKFORCE MOBILIZATION/DEMOBILIZATION, WORKFORCE LEVELING, WORKFORCE SKILL-MIX, AND OTHER REMEDIATION/DISPOSITION PROJECT EXECUTION PARAMETERS.

  9. Cognitive Remediation Strategies

    PubMed Central

    WEINSTEIN, CHERYL S.

    1994-01-01

    Evidence continues to emerge that childhood symptoms of attention-deficit hyperactivity disorder (ADHD) persist into adulthood. These symptoms include motoric hyperactivity, restlessness, attention deficits, poor organizational skills, impulsivity, and memory impairment. Poor academic and work performance, frustration, humiliation, and shame are also components of adult ADHD. Psychotherapists are challenged to understand the meaning of the disorder and its ramifications in all aspects of life. An active multimodal approach, including somatic treatment and psychotherapy, is needed. In addition, cognitive remediation strategies to enhance attention, organization, memory, and problem-solving skills are an important adjunct to treatment. These strategies serve as psychological tools to circumvent deficits. PMID:22700173

  10. Saxton soil remediation project

    SciTech Connect

    Holmes, R.D.

    1995-12-31

    The Saxton Nuclear Experimental Facility (SNEF) consists of a 23-MW(thermal) pressurized light water thermal reactor located in south central Pennsylvania. The Saxton Nuclear Experimental Corporation (SNEC), a wholly owned subsidiary of the General Public Utilities (GPU) Corporation, is the licensee for the SNEF. Maintenance and decommissioning activities at the site are conducted by GPU Nuclear, also a GPU subsidiary and operator of the Three Mile Island and Oyster Creek nuclear facilities. The remediation and radioactive waste management of contaminated soils is described.

  11. Nanomaterials for Environmental Remediation

    SciTech Connect

    Fryxell, Glen E.; Mattigod, Shas V.

    2006-01-30

    Over the last 10-15 years, there has been an explosion of activity in the design and synthesis of nanomaterials built around a wide variety of basic architectures. In more recent years, a portion of this effort has focused on the environmental impacts and environmental applications of these nanomaterials. Why all this interest in nanomaterials? What advantages might these tiny structures provide to environmental remediation efforts? This chapter is intended to provide an overview of research in this area, as well as outline some of the advantages that these materials provide to environmental clean-up efforts.

  12. 43 CFR 20.602 - Remedial action.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false Remedial action. 20.602 Section 20.602... Disciplinary and Remedial Actions § 20.602 Remedial action. (a)(1) Remedial action should normally be.... (2) If the bureau Ethics Counselor decides that remedial action is required, such action shall be...

  13. Remediating Remediation: From Basic Writing to Writing across the Curriculum

    ERIC Educational Resources Information Center

    Faulkner, Melissa

    2013-01-01

    This article challenges faculty members and administrators to rethink current definitions of remediation. First year college students are increasingly placed into basic writing courses due to a perceived inability to use English grammar correctly, but it must be acknowledged that all students will encounter the need for remediation as they attempt…

  14. Home Assessment and Remediation.

    PubMed

    Barnes, Charles S; Horner, W Elliott; Kennedy, Kevin; Grimes, Carl; Miller, J David

    2016-01-01

    Awareness of the relationship of fungi to asthma in indoor air is very old and well documented. There is substantial evidence that mold and dampness exacerbate asthma in sensitized individuals. Many governmental and nongovernmental organizations around the world have issued guidelines to the effect that the elimination of moisture intrusion and the removal of moldy items from living space can improve respiratory health. The process of home assessment for moisture and mold presence is discussed along with factors that can be used to guide fungal exposure reduction efforts. An approach to the assessment process itself is outlined, and common causes of moisture and mold damage are described. Points that should be included in a report resulting from a home assessment and rudimentary elements of report interpretation are discussed. Emphasis is that interpretation of sampling for moisture and fungal presence should be provided by the person performing the assessment. We conclude that multifaceted remediation contributes to fungal allergen avoidance. The use of an indoor environmental professional to generate evaluation reports and remediation activities can be a valuable contribution to an overall allergen avoidance strategy.

  15. Managing soil remediation problems.

    PubMed

    Okx, J P; Hordijk, L; Stein, A

    1996-12-01

    Soil remediation has only a short history but the problem addressed is a significant one. Cost estimates for the clean-up of contaminated sites in the European Union and the United States are in the order of magnitude of 1,400 billion ECU. Such an enormous operation deserves the best management it can get. Reliable cost estimations per contaminated site are an important prerequisite. This paper addresses the problems related to site-wise estimations.When solving soil remediation problems, we have to deal with a large number of scientific disciplines. Too often solutions are presented from the viewpoint of only one discipline. In order to benefit from the combined disciplinary knowledge and experience, we think that it is necessary to describe the interrelations between these disciplines. This can be realized by developing an adequate model of the desired process which enables to consider and evaluate the essential factors as interdependent components of the total system.The resulting model provides a binding paradigm to the contributing disciplines which will result in improved efficiency and effectivity of the decision and the cost estimation process. In the near future, we will release the "Biosparging and Bioventing Expert Support System", an expert support system for problem owners, consultants and authorities dealing with the design and operation of a biosparging and/or a bioventing system.

  16. Innovative Technologies for Chlorinated Solvent Remediation

    NASA Astrophysics Data System (ADS)

    Pennell, Kurt D.; Cápiro, Natalie L.

    2014-07-01

    The following sections are included: * INTRODUCTION * TRADITIONAL REMEDIATION TECHNOLOGIES (1980s) * RESEARCH AND DEVELOPMENT OF INNOVATIVE REMEDIATION TECHNOLOGIES (1990s-2000s) * CURRENT TRENDS IN CHLORINATED SOLVENT REMEDIATION (2010s) * CLOSING THOUGHTS * REFERENCES

  17. Remedial Education: A Position Paper.

    ERIC Educational Resources Information Center

    Chausow, Hymen M.

    Extensive commitment to the remedial "tracking approach" over many years by the City Colleges of Chicago has not produced the desired outcomes. The results of several studies indicate that: student achievement in remedial courses has not resulted in improved performance in regular college courses; student and institutional retention is…

  18. Interpersonal Needs of Remedial Readers.

    ERIC Educational Resources Information Center

    Cochran, Judith

    A study sought to determine the effects of reading deficiency on the interpersonal relationship needs of regular and remedial readers as composite groups and on elementary and secondary school remedial and regular readers as age groups. Elementary and secondary school students were randomly selected and tested on the Gates-MacGinitie Reading Tests…

  19. Error Analysis and Remedial Teaching.

    ERIC Educational Resources Information Center

    Corder, S. Pit

    The purpose of this paper is to analyze the role of error analysis in specifying and planning remedial treatment in second language learning. Part 1 discusses situations that demand remedial action. This is a quantitative assessment that requires measurement of the varying degrees of disparity between the learner's knowledge and the demands of the…

  20. Remediation: Real Students, Real Standards.

    ERIC Educational Resources Information Center

    Culross, Rita

    1996-01-01

    Addressing the diverse educational needs of the adult student population can be achieved without dumbing down the college curriculum, using costly remedial programs, or sending the wrong message to America's youth. Possible solutions include college-public school partnerships providing remediation, community college programs, distance learning,…

  1. Remedial Education: A Position Paper.

    ERIC Educational Resources Information Center

    Chausow, Hymen M.

    Extensive commitment to the remedial "tracking approach" over many years by the City Colleges of Chicago has not produced the desired outcomes. The results of several studies indicate that: student achievement in remedial courses has not resulted in improved performance in regular college courses; student and institutional retention is…

  2. Thematic Teaching in Remedial Mathematics.

    ERIC Educational Resources Information Center

    Pace, John P.

    For many students the present remedial mathematics curriculum is a collection of loosely related, very difficult to understand topics, and many, in consequence, lack the motivation to persist in remedial math courses. Most alternative instructional methods used in these courses fail to convey a sense of the underlying purpose of mathematics and…

  3. DDE remediation and degradation.

    PubMed

    Thomas, John E; Ou, Li-Tse; All-Agely, Abid

    2008-01-01

    DDT and its metabolites, DDD and DDE, have been shown to be recalcitrant to degradation. The parent compound, DDT, was used extensively worldwide starting in 1939 and was banned in the United States in 1973. The daughter compound, DDE, may result from aerobic degradation, abiotic dehydrochlorination, or photochemical decomposition. DDE has also occurred as a contaminant in commercial-grade DDT. The p,p'-DDE isomer is more biologically active than the o,p-DDE, with a reported half-life of -5.7 years. However, when DDT was repeatedly applied to the soil, the DDE concentration may remain unchanged for more than 20 yr. Remediation of DDE-contaminated soil and water may be done by several techniques. Phytoremediation involves translocating DDT, DDD, and DDE from the soil into the plant, although some aquatic species (duckweed > elodea > parrot feather) can transform DDT into predominantly DDD with some DDE being formed. Of all the plants that can uptake DDE, Cucurbita pepo has been the most extensively studied, with translocation values approaching "hyperaccumulation" levels. Soil moisture, temperature, and plant density have all been documented as important factors in the uptake of DDE by Cucurbita pepo. Uptake may also be influenced positively by amendments such as biosurfactants, mycorrhizal inoculants, and low molecular weight organic acids (e.g., citric and oxalic acids). DDE microbial degradation by dehalogenases, dioxygenases, and hydrolases occurs under the proper conditions. Although several aerobic degradation pathways have been proposed, none has been fully verified. Very few aerobic pure cultures are capable of fully degrading DDE to CO2. Cometabolism of DDE by Pseudomonas sp., Alicaligens sp., and Terrabacter sp. grown on biphenyl has been reported; however, not all bacterial species that produce biphenyl dioxygenase degraded DDE. Arsenic and copper inhibit DDE degradation by aerobic microorganisms. Similarly, metal chelates such as EDTA inhibit the

  4. Source control strategy accelerates remediation

    SciTech Connect

    Garland, S.B. II; Hammond, R.

    1993-06-01

    Shallow land burial of ion-level radioactive wastes at ORNL has resulted in the release of contaminants into surrounding soil, groundwater, and surface water. Multiple contaminated areas occurring in close proximity make it difficult to relate contaminant releases to a specific site. To address this issue, similar and contiguous contaminated sites within the same drainage area have been combined into Waste Area Groupings. These Waste Area Groupings were prioritized and became the focus of the Comprehensive Environmental Response, Compensation, and Liability Act remediation process. Since the majority of the groupings are in the White Oak Creek drainage basin, the remediation strategy is to control contaminant releases from these source areas first, followed by remediation of White Oak Creek. In planning the remediation program, it became clear that until the issues of ultimate land use and institutional control, waste treatment technologies, and waste disposal facilities are resolved, final remediation objectives cannot be defined and remedial alternatives cannot be evaluated. Consequently, instead of postponing remedial actions until these issues are resolved, a strategy to control the sources of contaminant release with a serie s of interim actions was developed. In the near term, this strategy reduces off-site risk by eliminating contaminant releases and controls on-site risk through institutional control. Source control will allow time to achieve consensus on long-term institutional control and land use issues to develop appropriate treatment technologies, and to construct the necessary disposal facilities without further environmental degradation.

  5. A Framework for Remediating Number Combination Deficits

    ERIC Educational Resources Information Center

    Fuchs, Lynn S.; Powell, Sarah R.; Seethaler, Pamela M.; Fuchs, Douglas; Hamlett, Carol L.; Cirino, Paul T.; Fletcher, Jack M.

    2010-01-01

    This article introduces a framework for the remediation of number combination (NC) deficits. Research on the remediation of NC deficits is summarized, and research program studies are used to illustrate the 3 approaches to remediation. The Framework comprises a 2-stage system of remediation. The less intensive stage implementing 1 of 3…

  6. Honey: An Effective Cough Remedy?

    MedlinePlus

    ... cough remedy? Is it true that honey calms coughs better than cough medicine does? Answers from James M. Steckelberg, M. ... throat. But honey alone may be an effective cough suppressant, too. In one study, children age 2 ...

  7. ICDF Complex Remedial Action Report

    SciTech Connect

    W. M. Heileson

    2007-09-26

    This Idaho CERCLA Disposal Facility (ICDF) Remedial Action Report has been prepared in accordance with the requirements of Section 6.2 of the INEEL CERCLA Disposal Facility Remedial Action Work Plan. The agency prefinal inspection of the ICDF Staging, Storage, Sizing, and Treatment Facility (SSSTF) was completed in June of 2005. Accordingly, this report has been developed to describe the construction activities completed at the ICDF along with a description of any modifications to the design originally approved for the facility. In addition, this report provides a summary of the major documents prepared for the design and construction of the ICDF, a discussion of relevant requirements and remedial action objectives, the total costs associated with the development and operation of the facility to date, and identification of necessary changes to the Agency-approved INEEL CERCLA Disposal Facility Remedial Action Work Plan and the ICDF Complex Operations and Maintenance Plan.

  8. Dandruff: Lifestyle and Home Remedies

    MedlinePlus

    ... management By Mayo Clinic Staff Lifestyle and home remedies In addition to regular shampooing, you can take ... your skin and increases your risk of skin cancer, don't sunbathe. Instead, just spend a little ...

  9. Remediation of contaminated soils

    SciTech Connect

    Radhakrishnan, R.; Ariza, C.H.

    1997-07-01

    At least three types of zones of contamination exist whenever there is a chemical release. The impact of Non-Aqueous-Phase Liquids (NAPL) on soils and groundwater, together with the ultimate transport and migration of constituent chemicals in their dissolved or sorbed states, had led environmentalists to develop several techniques for cleaning a contaminated soil. Zone 1 represents the unsaturated zone which could be contaminated to retention capacity by both Dense Non-Aqueous-Phase Liquids (DNAPL) and Light Non-Aqueous-Phase Liquids (LNAPL). Zone 2 represents residual DNAPL or LNAPL contamination found below the groundwater table in the saturated zone. Zone 3 is represented by either the presence of NAPL dissolved in the aqueous phase, volatilized in the unsaturated zone or sorbed to either saturated or unsaturated soils. Cleanup of petroleum contaminated soils is presented in this paper. Among several techniques developed for this purpose, in-situ biological remediation is discussed in detail as a technique that does not involve excavation, thus, the costs and disruption of excavating soil are eliminated.

  10. Remediating while preserving wetland habitat at an LLR waste site in Canada

    SciTech Connect

    Kleb, H.R.; Zelmer, R.L.

    2007-07-01

    The Low-Level Radioactive Waste Management Office was established in 1982 to carry out the federal government's responsibilities for low-level radioactive (LLR) waste management in Canada. The Office operates programs to characterize, delineate, decontaminate and consolidate historic LLR waste for interim and long-term storage. In this capacity, the Office is currently considering the remediation of 9,000 cubic metres of contaminated sediment in a coastal marsh in the context of a major remediation project involving multiple urban sites. The marsh is situated between the Lake Ontario shoreline and the urban fringe of the Town of Port Hope. The marsh is designated a Cattail Mineral Shallow Marsh under the Ecological Land Classification system for Southern Ontario and was recently named the A.K. Sculthorpe Marsh in memory of a local community member. The marsh remediation will therefore require trade off between the disruption of a sensitive wetland and the removal of contaminated sediment. This paper discusses the issues and trade-off relating to the waste characterization, environmental assessment and regulatory findings and thus the remediation objectives for the marsh. Considerations include the spatial distribution of contaminated sediment, the bioavailability of contaminants, the current condition of the wetland and the predicted effects of remediation. Also considered is the significance of the wetland from provincial and municipal regulatory perspectives and the resulting directives for marsh remediation. (authors)

  11. Blue gamma grass and compost effects on urban soil

    USDA-ARS?s Scientific Manuscript database

    Urban construction sites often have excessive erosion and compaction after topsoil removal, scraping, and grading. The purpose of this study is to determine if compaction remediation efforts are effective on a simulated urban site. The sod and topsoil were removed, the area was graded to a 1% slope,...

  12. Still Separate, Still Unequal. The Limits of Milliken II's Educational Compensation Remedies.

    ERIC Educational Resources Information Center

    Feldman, Joseph; And Others

    In 1974, the Supreme Court in "Milliken v. Bradley" blocked a major effort to desegregate isolated urban areas by establishing stringent legal standards that made it very difficult for plaintiffs to include suburbs in desegregation remedies. Three years later a second Milliken decision (Milliken II) authorized lower Federal courts to…

  13. Phosphorus Amendment Efficacy for In Situ Remediation of Soil Lead Depends on the Bioaccessible Method

    EPA Science Inventory

    A validated method is needed to measure reductions of in vitro bioaccessible (IVBA) Pb in urban soil remediated with amendments. This study evaluated the effect of in vitro extraction solution pH and glycine buffer on bioaccesible Pb in P-treated soils. Two Pb-contaminated soils...

  14. 24 CFR 982.404 - Maintenance: Owner and family responsibility; PHA remedies.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 4 2010-04-01 2010-04-01 false Maintenance: Owner and family... Maintenance: Owner and family responsibility; PHA remedies. (a) Owner obligation. (1) The owner must maintain... for a breach of the HQS that is not caused by the owner, and for which the family is responsible (as...

  15. How Can Placement Policy Improve Math Remediation Outcomes? Evidence from Experimentation in Community Colleges

    ERIC Educational Resources Information Center

    Ngo, Federick; Melguizo, Tatiana

    2016-01-01

    Changing placement policy may help to improve developmental education student outcomes in community colleges, but there is little understanding of the impacts of these reforms. We take advantage of heterogeneous placement policy in a large urban community college district in California to compare the effects of math remediation under different…

  16. Phosphorus Amendment Efficacy for In Situ Remediation of Soil Lead Depends on the Bioaccessible Method

    EPA Science Inventory

    A validated method is needed to measure reductions of in vitro bioaccessible (IVBA) Pb in urban soil remediated with amendments. This study evaluated the effect of in vitro extraction solution pH and glycine buffer on bioaccesible Pb in P-treated soils. Two Pb-contaminated soils...

  17. Remedying Education: Evidence from Two Randomized Experiments in India. NBER Working Paper No. 11904

    ERIC Educational Resources Information Center

    Banerjee, Abhijit; Cole, Shawn; Duflo, Esther; Linden, Leigh

    2005-01-01

    Many efforts to improve school quality by adding school resources have proven to be ineffective. This paper presents the results of two experiments conducted in Mumbai and Vadodara, India, designed to evaluate ways to improve the quality of education in urban slums. A remedial education program hired young women from the community to teach basic…

  18. How Can Placement Policy Improve Math Remediation Outcomes? Evidence from Experimentation in Community Colleges

    ERIC Educational Resources Information Center

    Ngo, Federick; Melguizo, Tatiana

    2016-01-01

    Changing placement policy may help to improve developmental education student outcomes in community colleges, but there is little understanding of the impacts of these reforms. We take advantage of heterogeneous placement policy in a large urban community college district in California to compare the effects of math remediation under different…

  19. 24 CFR 572.225 - Grant agreements; corrective and remedial actions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ..., DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT COMMUNITY FACILITIES HOPE FOR HOMEOWNERSHIP OF SINGLE FAMILY HOMES PROGRAM (HOPE 3) Grants § 572.225 Grant agreements; corrective and remedial actions. (a) Terms and... not incurring further costs for the affected activities; (iv) Reimbursing its HOPE 3 program...

  20. Hanford Groundwater Remediation

    SciTech Connect

    Charboneau, B.; Thompson, K. M.; Wilde, R.; Ford, B.; Gerber, M.

    2006-07-01

    united in its desire to protect the Columbia River and have a voice in Hanford's future. This paper presents the challenges, and then discusses the progress and efforts underway to reduce the risk posed by contaminated groundwater at Hanford. While Hanford groundwater is not a source of drinking water on or off the Site, there are possible near-shore impacts where it flows into the Columbia River. Therefore, this remediation is critical to the overall efforts to clean up the Site, as well as protect a natural resource. (authors)

  1. HANFORD GROUNDWATER REMEDIATION

    SciTech Connect

    CHARBONEAU, B; THOMPSON, M; WILDE, R.; FORD, B.; GERBER, M.S.

    2006-02-01

    united in its desire to protect the Columbia River and have a voice in Hanford's future. This paper presents the challenges, and then discusses the progress and efforts underway to reduce the risk posed by contaminated groundwater at Hanford. While Hanford groundwater is not a source of drinking water on or off the Site, there are possible near-shore impacts where it flows into the Columbia River. Therefore, this remediation is critical to the overall efforts to clean up the Site, as well as protect a natural resource.

  2. Urban Education in the 1970's.

    ERIC Educational Resources Information Center

    Passow, A. Harry

    The reported failure of urban schools has been well documented by various government commissions. To remedy this situation, quality and equality of education must be insured. Research and development on disadvantaged populations has increased in an effort to reverse the effects of traditional pedagogical methods. Numerous programs for early…

  3. Remedial Action Contacts Directory - 1997

    SciTech Connect

    1997-05-01

    This document, which was prepared for the US Department of Energy (DOE) Office of Environmental Restoration (ER), is a directory of 2628 individuals interested or involved in environmental restoration and/or remedial actions at radioactively contaminated sites. This directory contains a list of mailing addresses and phone numbers of DOE operations, area, site, project, and contractor offices; an index of DOE operations, area, site, project, and contractor office sorted by state; a list of individuals, presented by last name, facsimile number, and e-mail address; an index of affiliations presented alphabetically, with individual contacts appearing below each affiliation name; and an index of foreign contacta sorted by country and affiliation. This document was generated from the Remedial Action Contacts Database, which is maintained by the Remedial Action Program Information Center (RAPIC).

  4. Research issues for thermal remediation

    SciTech Connect

    Davis, E.L.; Heron, G.

    1998-06-01

    In order to optimize thermal remediation techniques, all of the effects of the heat on the subsurface system must be understood and taken into consideration during the remediation. Research is needed to provide a better understanding of the effects of temperature on capillarity in soils. This should include laboratory data on the effect of temperature on capillarity in soils. This should include laboratory data on the effect of temperature on displacement pressures which is needed to determine the potential for downward movement of DNAPLS.

  5. HANDBOOK: APPROACHES FOR REMEDIATION OF ...

    EPA Pesticide Factsheets

    This publication was developed by the Center for Environmental Research Information (CERI), Office of Research and Development, of the U.S. Environmental Protection Agency (EPA). The information in the document is based primarily on presentations at two technology transfer seminar series: Technologies for Remediating Sites Contaminated with Explosive and Radioactive Wastes, sponsored jointly by EPA and the U.S. Department of Defense (DOD) in spring and summer 1993; and Radioactive Site Remediation, sponsored by EPA and the Department of Energy (DOE) in summer 1992. Additional information has been provided by technical experts from EPA, DOD, DOE, academia, and private industry. present information

  6. REMEDIATION FACILITY WORKER DOSE ASSESSMENT

    SciTech Connect

    V. Arakali; E. Faillace

    2004-02-27

    The purpose of this design calculation is to estimate radiation doses received by personnel in the Remediation Facility performing operations to receive, prepare, open, repair, recover, disposition, and correct off-normal and non-standard conditions with casks, canisters, spent nuclear fuel (SNF) assemblies, and waste packages (WP). The specific scope of work contained in this calculation covers both collective doses and individual worker group doses on an annual basis, and includes the contributions due to external and internal radiation. The results of this calculation will be used to support the design of the Remediation Facility and provide occupational dose estimates for the License Application.

  7. Indigenous plant remedies in Zimbabwe.

    PubMed

    Chinemana, F; Drummond, R B; Mavi, S; de Zoysa, I

    1985-01-01

    Two household surveys undertaken in Zimbabwe between 1981 and 1983 revealed extensive use of indigenous plant remedies in the home-management of childhood diarrhoea and many adult illnesses. Names of the local plants, trees and shrubs are listed, together with the part of the plant used and the type of condition treated. The usage of medicinal plants underscores the need for further study of indigenous pharmacopoeias and the therapeutic properties of plants. The role of indigenous plant remedies within local health care systems is also worthy of closer investigation.

  8. Remediation Technologies Eliminate Contaminants

    NASA Technical Reports Server (NTRS)

    2012-01-01

    groundwater tainted by chlorinated solvents once used to clean rocket engine components. The award-winning innovation (Spinoff 2010) is now NASA s most licensed technology to date. PCBs in paint presented a new challenge. Removing the launch stand for recycling proved a difficult operation; the toxic paint had to be fully stripped from the steel structure, a lengthy and costly process that required the stripped paint to be treated before disposal. Noting the lack of efficient, environmentally friendly options for dealing with PCBs, Quinn and her colleagues developed the Activated Metal Treatment System (AMTS). AMTS is a paste consisting of a solvent solution containing microscale particles of activated zero-valent metal. When applied to a painted surface, the paste extracts and degrades the PCBs into benign byproducts while leaving the paint on the structure. This provides a superior alternative to other methods for PCB remediation, such as stripping the paint or incinerating the structure, which prevents reuse and can release volatized PCBs into the air. Since its development, AMTS has proven to be a valuable solution for removing PCBs from paint, caulking, and various insulation and filler materials in older buildings, naval ships, and former munitions facilities where the presence of PCBs interferes with methods for removing trace explosive materials. Miles of potentially toxic caulking join sections of runways at airports. Any of these materials installed before 1979 potentially contain PCBs, Quinn says. "This is not just a NASA problem," she says. "It s a global problem."

  9. Bioelectrical Perchlorate Remediation

    NASA Astrophysics Data System (ADS)

    Thrash, C.; Achenbach, L. A.; Coates, J. D.

    2007-12-01

    low-level perchlorate (100 μg.L-1) influent as well as mixed-waste influents more typically found in the environment containing both nitrate and perchlorate. Through extended periods of operation (>70 days), no loss in treatment efficiency was noted and no measurable growth in biomass was observed. Gas phase analysis indicated that low levels of H2 produced at the cathode surface through electrolysis can provide enough reducing equivalents to mediate this metabolism. The results of these studies demonstrate that perchlorate remediation can be facilitated through the use of a cathode as the primary electron donor, and that continuous treatment in such a system approaches current industry standards. This has important implications for the continuous treatment of this critical contaminant in industrial waste streams and drinking water. Such a process has the advantage of long-term, low-maintenance operation with ease of online monitoring and control while limiting the injection of additional chemicals into the water treatment process and outgrowth of the microbial populations. This would negate the need for the continual removal and disposal of biomass produced during treatment and also the downstream issues associated with corrosion and biofouling of distribution systems and the production of toxic disinfection byproducts.

  10. Standards-Based Automated Remediation: A Remediation Manager Reference Implementation

    DTIC Science & Technology

    2011-07-01

    Remediation Manager capabilities to address key challenges, for example, by developing a smart Policy Manager to analyze policies when updates or overrides...registry_stateType”> CMU/SEI-2011-SR-007 | 63 <xs:sequence> <xs:element name=“ hive ” type=“wfm:regeditHiveType”/> <xs:element name=“key

  11. Advanced Fuel Hydrocarbon Remediation National Test Location - Biopile Remediation

    DTIC Science & Technology

    1997-03-01

    Biopile remediation is an environmental cleanup technology that uses naturally occurring microbes such as bacteria and fungi to destroy organic...contaminants in soil. Certain species of bacteria are able to consume organic pollutants as a food source, thus detoxifying the pollutants. Biopile

  12. Integrating Remedial Methods into Child Care Practice

    ERIC Educational Resources Information Center

    Adler, Jack; Finkel, William

    1976-01-01

    This study describes an experimental program that involves the participation of child care counselors and remedial educators in planning and implementing a remediation program based on a comprehensive diagnostic assessment of a child's cognitive assets and deficits. (SB)

  13. Abstracts of Remediation Case Studies, Volume 9

    EPA Pesticide Factsheets

    This report, published by the Federal Remediation Technologies Roundtable (FRTR), is a collection of recently published abstracts summarizing 13 cost and performance case studies on the use of remediation technologies at contaminated sites.

  14. Steam Injection For Soil And Aquifer Remediation

    EPA Pesticide Factsheets

    The purpose of this Issue Paper is to provide to those involved in assessing remediation technologies for specific sites basic technical information on the use of steam injection for the remediation of soils and aquifers that are contaminated by...

  15. Key Principles of Superfund Remedy Selection

    EPA Pesticide Factsheets

    Guidance on the primary considerations of remedy selection which are universally applicable at Superfund sites. Key guidance here include: Rules of Thumb for Superfund Remedy Selection and Role of the Baseline Risk Assessment.

  16. Data Gaps in Remedial Design (USACE)

    EPA Pesticide Factsheets

    As the number of Supertund sites In the phases of Remedial Design (RD) and Remedial Action (RA) has grown. we have become increasingly aware of the adverse effects of inadequate or insufficient design data.

  17. Preferential Remedies for Employment Discrimination

    ERIC Educational Resources Information Center

    Edwards, Harry T.; Zaretsky, Barry L.

    1975-01-01

    An overview of the problem of preferential remedies to achieve equal employment opportunities for women and minority groups. Contends that "color blindness" will not end discrimination but that some form of "color conscious" affirmative action program must be employed. Temporary preferential treatment is justified, according to…

  18. Re/Mediating Adolescent Literacies.

    ERIC Educational Resources Information Center

    Elkins, John, Ed.; Luke, Allan, Ed.

    Suggesting that teaching in New Times requires that educators read and re/mediate the social relations, the cultural knowledges, and the relationships of power between adolescents and their social, biological, and semiotic universes, this collection of essays offers new ways of seeing and talking about adolescents and their literacies. Most of the…

  19. Remediation Technology for Contaminated Groundwater

    EPA Science Inventory

    Bioremediation is the most commonly selected technology for remediation of ground water at Superfund sites in the USA. The next most common technology is Chemical treatment, followed by Air Sparging, and followed by Permeable Reactive Barriers. This presentation reviews the the...

  20. Preferential Remedies for Employment Discrimination

    ERIC Educational Resources Information Center

    Edwards, Harry T.; Zaretsky, Barry L.

    1975-01-01

    An overview of the problem of preferential remedies to achieve equal employment opportunities for women and minority groups. Contends that "color blindness" will not end discrimination but that some form of "color conscious" affirmative action program must be employed. Temporary preferential treatment is justified, according to…

  1. Toxic Remediation System And Method

    DOEpatents

    Matthews, Stephen M.; Schonberg, Russell G.; Fadness, David R.

    1996-07-23

    What is disclosed is a novel toxic waste remediation system designed to provide on-site destruction of a wide variety of hazardous organic volatile hydrocarbons, including but not limited to halogenated and aromatic hydrocarbons in the vapor phase. This invention utilizes a detoxification plenum and radiation treatment which transforms hazardous organic compounds into non-hazardous substances.

  2. Remediation Technology for Contaminated Groundwater

    EPA Science Inventory

    Bioremediation is the most commonly selected technology for remediation of ground water at Superfund sites in the USA. The next most common technology is Chemical treatment, followed by Air Sparging, and followed by Permeable Reactive Barriers. This presentation reviews the the...

  3. Green Chemistry and Environmental Remediation

    EPA Science Inventory

    Abstract: Nutrient remediation and recovery is a growing concern for two key reasons: (i) the prevention of harmful algal bloom proliferation, and (ii) the recycling of nutrients (e.g., phosphates) as they are non-renewable resources which are quickly being depleted. A wide range...

  4. Green Chemistry and Environmental Remediation

    EPA Science Inventory

    Abstract: Nutrient remediation and recovery is a growing concern for two key reasons: (i) the prevention of harmful algal bloom proliferation, and (ii) the recycling of nutrients (e.g., phosphates) as they are non-renewable resources which are quickly being depleted. A wide range...

  5. Adolescent Literacy: More than Remediation

    ERIC Educational Resources Information Center

    Biancarosa, Gina

    2012-01-01

    The challenge of adolescent literacy involves more than providing remediation for students who have not mastered basic reading skills. To become successful learners, adolescents must master complex texts, understand the diverse literacy demands of the different content areas, and navigate digital texts. In this article, Biancarosa reviews what the…

  6. Remedial Mathematics for Quantum Chemistry

    ERIC Educational Resources Information Center

    Koopman, Lodewijk; Brouwer, Natasa; Heck, Andre; Buma, Wybren Jan

    2008-01-01

    Proper mathematical skills are important for every science course and mathematics-intensive chemistry courses rely on a sound mathematical pre-knowledge. In the first-year quantum chemistry course at this university, it was noticed that many students lack basic mathematical knowledge. To tackle the mathematics problem, a remedial mathematics…

  7. TECHNIQUES FOR TEACHING REMEDIAL CASES.

    ERIC Educational Resources Information Center

    SMITH, EDWIN H.; AND OTHERS

    A DISABLED READER, DEFINED AS A PERSON WHO SHOWS A SERIOUS DEFICIT IN READING ABILITY, CAN BE ONE OF TWO TYPES--CORRECTIVE CASE (IN WHOM THE CAPACITY TO LEARN IS INTACT BUT OTHER FACTORS HAVE INHIBITED PROGRESS IN READING) AND REMEDIAL CASE (A STUDENT WHOSE READING DISABILITY HAS A MORE SERIOUS CAUSE AND CANNOT BE REMOVED). IT IS THE CAUSE OF…

  8. Remedial Mathematics for Quantum Chemistry

    ERIC Educational Resources Information Center

    Koopman, Lodewijk; Brouwer, Natasa; Heck, Andre; Buma, Wybren Jan

    2008-01-01

    Proper mathematical skills are important for every science course and mathematics-intensive chemistry courses rely on a sound mathematical pre-knowledge. In the first-year quantum chemistry course at this university, it was noticed that many students lack basic mathematical knowledge. To tackle the mathematics problem, a remedial mathematics…

  9. Removing Remediation Requirements: Effectiveness of Intervention Programs

    ERIC Educational Resources Information Center

    Fine, Anne; Duggan, Mickle; Braddy, Linda

    2009-01-01

    Remediation of incoming college freshman students is a national concern because remediated students are at higher risk of failing to complete their degrees. Some Oklahoma higher education institutions are working to assist K-12 systems in finding ways to reduce the number of incoming college freshman students requiring remediation. This study…

  10. 40 CFR 85.1803 - Remedial Plan.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Remedial Plan. 85.1803 Section 85.1803... POLLUTION FROM MOBILE SOURCES Recall Regulations § 85.1803 Remedial Plan. (a) When any manufacturer is... manufacturer shall submit a plan to the Administrator to remedy such nonconformity. The plan shall contain the...

  11. New Mexico English Remediation Taskforce Report

    ERIC Educational Resources Information Center

    New Mexico Higher Education Department, 2016

    2016-01-01

    In March, 2016, the state of New Mexico established a Remediation Task Force to examine remediation reform efforts across the state's higher education institutions. On March 11, the Task Force met for the "New Mexico Corequisite Remediation at Scale Policy Institute" in order to learn about the results of the latest national reform…

  12. Herbal remedies. How much do you know?

    PubMed

    Myerscough, M

    1998-11-01

    In this article the importance of knowledge about herbal remedies in general practice is discussed using guarana (Paullinia cupana), St John's wort (Hypericum perforatum), and gingko (Ginkgo biloba) as examples. Obtaining information about herbal remedies can be difficult. Lack of clinical data about the use, safety, efficacy and general practitioner attitudes to herbal remedies creates research opportunities in this area of general practice.

  13. 40 CFR 85.1803 - Remedial Plan.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 19 2012-07-01 2012-07-01 false Remedial Plan. 85.1803 Section 85.1803... POLLUTION FROM MOBILE SOURCES Recall Regulations § 85.1803 Remedial Plan. (a) When any manufacturer is... manufacturer shall submit a plan to the Administrator to remedy such nonconformity. The plan shall contain...

  14. 40 CFR 92.705 - Remedial plan.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 20 2014-07-01 2013-07-01 true Remedial plan. 92.705 Section 92.705... POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES Recall Regulations § 92.705 Remedial plan. (a) When any... manufacturer or remanufacturer shall submit a plan to the Administrator to remedy such nonconformity. The...

  15. 40 CFR 85.1803 - Remedial Plan.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 19 2014-07-01 2014-07-01 false Remedial Plan. 85.1803 Section 85.1803... POLLUTION FROM MOBILE SOURCES Recall Regulations § 85.1803 Remedial Plan. (a) When any manufacturer is... manufacturer shall submit a plan to the Administrator to remedy such nonconformity. The plan shall contain...

  16. 40 CFR 92.705 - Remedial plan.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 21 2012-07-01 2012-07-01 false Remedial plan. 92.705 Section 92.705... POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES Recall Regulations § 92.705 Remedial plan. (a) When any... manufacturer or remanufacturer shall submit a plan to the Administrator to remedy such nonconformity. The...

  17. ELECTROCHEMICAL REMEDIATION TECHNOLOGIES (ECRTS) DEMONSTRATION BULLETIN

    EPA Science Inventory

    The ElectroChemical Remediation Technologies (ECRTs) process was developed by P2-Soil Remediation, Inc. P-2 Soil Remediation, Inc. formed a partnership with Weiss Associates and ElectroPetroleum, Inc. to apply the technology to contaminated sites. The ECRTs process was evaluated ...

  18. Removing Remediation Requirements: Effectiveness of Intervention Programs

    ERIC Educational Resources Information Center

    Fine, Anne; Duggan, Mickle; Braddy, Linda

    2009-01-01

    Remediation of incoming college freshman students is a national concern because remediated students are at higher risk of failing to complete their degrees. Some Oklahoma higher education institutions are working to assist K-12 systems in finding ways to reduce the number of incoming college freshman students requiring remediation. This study…

  19. INTERPRETING TRACER DATA TO FORECAST REMEDIAL PERFORMANCE

    EPA Science Inventory

    The cost of remediating sites contaminated with organics is high. Prior to investing in remedial technologies, decision makers want to know the benefits, both short term and long term, which will be derived from a proposed remedial activity. Recent studies have shown significant ...

  20. A MODEL PROGRAM FOR REMEDIAL READING.

    ERIC Educational Resources Information Center

    CUTTS, WARREN G.

    WHENEVER IT BECOMES NECESSARY FOR A PUPIL TO RECEIVE EXTRA HELP OUTSIDE THE REGULAR CLASSROOM, HE IS INVOLVED IN REMEDIAL READING. REMEDIAL INSTRUCTION IS MORE HIGHLY INDIVIDUALIZED THAN REGULAR READING INSTRUCTION, AND IS TAILORED TO INDIVIDUAL NEEDS ON THE BASIS OF DIAGNOSTIC TESTING. MOTIVATION IS IMPORTANT TO ALL REMEDIAL INSTRUCTION, FOR…

  1. 48 CFR 2009.570-10 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... ACQUISITION PLANNING CONTRACTOR QUALIFICATIONS Organizational Conflicts of Interest 2009.570-10 Remedies. In addition to other remedies permitted by law or contract for a breach of the restrictions in this subpart or... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Remedies....

  2. ELECTROCHEMICAL REMEDIATION TECHNOLOGIES (ECRTS) DEMONSTRATION BULLETIN

    EPA Science Inventory

    The ElectroChemical Remediation Technologies (ECRTs) process was developed by P2-Soil Remediation, Inc. P-2 Soil Remediation, Inc. formed a partnership with Weiss Associates and ElectroPetroleum, Inc. to apply the technology to contaminated sites. The ECRTs process was evaluated ...

  3. Groundwater Remedies Selected at Superfund Sites

    EPA Pesticide Factsheets

    Groundwater remediation continues to be a priority for the U.S. Environmental Protection Agency (EPA), and remedies that have been specified in RODs for groundwater remediation include treatment (including groundwater pump and treat [P&T] and in situ treat

  4. 49 CFR 193.2637 - Remedial measures.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 3 2012-10-01 2012-10-01 false Remedial measures. 193.2637 Section 193.2637 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY...: FEDERAL SAFETY STANDARDS Maintenance § 193.2637 Remedial measures. Prompt corrective or remedial action...

  5. 49 CFR 193.2637 - Remedial measures.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 3 2013-10-01 2013-10-01 false Remedial measures. 193.2637 Section 193.2637 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY...: FEDERAL SAFETY STANDARDS Maintenance § 193.2637 Remedial measures. Prompt corrective or remedial action...

  6. 49 CFR 193.2637 - Remedial measures.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 3 2011-10-01 2011-10-01 false Remedial measures. 193.2637 Section 193.2637 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY...: FEDERAL SAFETY STANDARDS Maintenance § 193.2637 Remedial measures. Prompt corrective or remedial action...

  7. 49 CFR 193.2637 - Remedial measures.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 3 2014-10-01 2014-10-01 false Remedial measures. 193.2637 Section 193.2637 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY...: FEDERAL SAFETY STANDARDS Maintenance § 193.2637 Remedial measures. Prompt corrective or remedial action...

  8. 49 CFR 193.2637 - Remedial measures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Remedial measures. 193.2637 Section 193.2637 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY...: FEDERAL SAFETY STANDARDS Maintenance § 193.2637 Remedial measures. Prompt corrective or remedial action...

  9. GROUNDWATER REMEDIATION SOLUTIONS AT HANFORD

    SciTech Connect

    Gilmore, Tyler J.; Truex, Michael J.; Williams, Mark D.

    2007-02-26

    In 2006, Congress provided funding to the U. S. Department of Energy (DOE) to study new technologies that could be used to treat contamination from the Hanford Site that might impact the Columbia River. The contaminants of concern are primarily metals and radionuclides, which are byproducts of Hanford’s cold war mission to produce plutonium for atomic weapons. The DOE asked Pacific Northwest National Laboratory (PNNL) to consider this problem and develop approaches to address the contamination that threatens the river. DOE identified three high priority sites that had groundwater contamination migrating towards the Columbia river for remediation. The contaminants included strontium-90, uranium and chromium. Remediation techniques for metals and radionuclides focus primarily on altering the oxidation state of the contaminant chemically or biologically, isolating the contaminants from the environment through adsorption or encapsulation or concentrating the contaminants for removal. A natural systems approach was taken that uses a mass balance concept to frame the problem and determine the most appropriate remedial approach. This approach provides for a scientifically based remedial decision. The technologies selected to address these contaminants included an apatite adsorption barrier coupled with a phytoremediation to address the strontium-90 contamination, injection of polyphosphate into the subsurface to sequester uranium, and a bioremediation approach to reduce chromium contamination in the groundwater. The ability to provide scientifically based approaches is in large part due to work developed under previous DOE Office of Science and Office of Environmental Management projects. For example, the polyphosphate and the bioremediation techniques, were developed by PNNL under the EMSP and NABIR programs. Contaminated groundwater under the Hanford Site poses a potential risk to humans and the Columbia River. These new technologies holds great promise for

  10. Metal Immobilization Influence On Bioavailability And Remediation For Urban Environments

    EPA Science Inventory

    Immobilization of soil contaminants, such as lead, via phosphate amendments to alter the chemical environment of metals into highly insoluble forms is a well established process. The literature has documented numerous examples of highly contaminated Pb sites at shooting ranges, b...

  11. Metal Immobilization Influence On Bioavailability And Remediation For Urban Environments

    EPA Science Inventory

    Immobilization of soil contaminants, such as lead, via phosphate amendments to alter the chemical environment of metals into highly insoluble forms is a well established process. The literature has documented numerous examples of highly contaminated Pb sites at shooting ranges, b...

  12. Remediation using trace element humate surfactant

    DOEpatents

    Riddle, Catherine Lynn; Taylor, Steven Cheney; Bruhn, Debra Fox

    2016-08-30

    A method of remediation at a remediation site having one or more undesirable conditions in which one or more soil characteristics, preferably soil pH and/or elemental concentrations, are measured at a remediation site. A trace element humate surfactant composition is prepared comprising a humate solution, element solution and at least one surfactant. The prepared trace element humate surfactant composition is then dispensed onto the remediation site whereby the trace element humate surfactant composition will reduce the amount of undesirable compounds by promoting growth of native species activity. By promoting native species activity, remediation occurs quickly and environmental impact is minimal.

  13. Urban History, Urban Health

    PubMed Central

    Knowlton, Kim

    2001-01-01

    Over the course of the 20th century, the United States became an urban nation: 80% of Americans now live in metropolitan areas. Supplying basic sanitary services—drinking water, sewers, and garbage removal—to these cities is a gargantuan task, yet most people have little understanding of urban infrastructure systems and their enormous regional ecologic impacts. Municipalization of sanitary services, especially since 1880, distanced people from their wastes and gave city dwellers a simplistic experience of one-way material flow through cities, without knowledge of the environmental costs. Most sanitary infrastructures were built primarily for durability and lack the elasticity to meet changing needs. The challenge now is to adapt sanitary systems for flexibility and simultaneously move from unchecked material consumption toward resource-based thinking. PMID:11726370

  14. Unique Construction and Social Experiences in Residential Remediation Sites - 13423

    SciTech Connect

    Jung, Paul; Scarborough, Rebecca

    2013-07-01

    Sevenson Environmental Services, Inc., (Sevenson) has performed several radiological remediation projects located in residential urban areas. Over the course of these projects, there has been a wide variety of experiences encountered from construction related issues to unique social situations. Some of the construction related issues included the remediation of interior basements where contaminated material was located under the footers of the structure or was used in the mortar between cinder block or field stone foundations. Other issues included site security, maintaining furnaces or other utilities, underpinning, backfilling and restoration. In addition to the radiological hazards associated with this work there were occupational safety and industrial hygiene issues that had to be addressed to ensure the safety and health of neighboring properties and residents. The unique social situations at these job sites have included arson, theft/stolen property, assault/battery, prostitution, execution of arrest warrants for residents, discovery of drugs and paraphernalia, blood borne pathogens, and unexploded ordnance. Some of these situations have become a sort of comical urban legend throughout the organization. One situation had historical significance, involving the demolition of a house to save a tree older than the Declaration of Independence. All of these projects typically involve the excavation of early 20. century items such as advertisement signs, various old bottles (milk, Listerine, perfume, whisky) and other miscellaneous common trash items. (authors)

  15. Innovative Vitrification for Soil Remediation

    SciTech Connect

    Hnat, James G.; Patten, John S.; Jetta, Norman W.

    1996-12-31

    Vortec has successfully completed Phases 1 and 2 of a technology demonstration program for an ''Innovative Fossil Fuel Fired Vitrification Technology for Soil Remediation.'' The principal objective of the program is to demonstrate the ability of a Vortec Cyclone Melting System (CMS) to remediate DOE contaminated soils and other waste forms containing TM RCRA hazardous materials, low levels of radionuclides and TSCA (PCB) containing wastes. The demonstration program will verify the ability of this vitrification process to produce a chemically stable glass final waste form which passes both TCLP and PCT quality control requirements, while meeting all federal and state emission control regulations. The demonstration system is designed to process 36 ton/day of as-received drummed or bulk wastes. The processing capacity equates to approximately 160 barrels/day of waste materials containing 30% moisture at an average weight of 450 lbs./barrel.

  16. Functional Remediation for Bipolar Disorder

    PubMed Central

    Martínez-Arán, Anabel; Torrent, Carla; Solé, Brisa; Bonnín, C. Mar; Rosa, Adriane R; Sánchez-Moreno, José; Vieta, Eduard

    2011-01-01

    Neurocognitive impairment constitutes a core feature of bipolar illness. The main domains affected are verbal memory, attention, and executive functions. Deficits in these areas as well as difficulties to get functional remission seem to be increased associated with illness progression. Several studies have found a strong relationship between neurocognitive impairment and low functioning in bipolar disorder, as previously reported in other illnesses such as schizophrenia. Cognitive remediation strategies, adapted from work conducted with traumatic brain injury patients and applied to patients with schizophrenia, also need to be adapted to individuals with bipolar disorders. Early intervention using functional remediation, involves neurocognitive techniques and training, but also psychoeducation on cognition-related issues and problem-solving within an ecological framework. PMID:21687565

  17. Surfactant-enhanced aquifier remediation

    SciTech Connect

    Fountain, J.C.

    1996-12-31

    Surfactants can be used to rapidly remove NAPL from contaminated aquifers. They are effective for virtually any organic contaminant. Use in LNAPL contaminated sites requires adequate hydraulic conductivity and control of flow using either hydraulic or physical methods. The presence of DNAPL requires consideration of vertical mobility; a competent confining layer (aquitard) is required if additional aquifers are present at greater depths. Surfactant processes, whether based upon mobilization or solubilization, can be effective at mass removal, but cannot be expected to provide resortation to drinking water standards. The fraction of mass removal, and the cost of remediation using surfactants are dependent upon a sites hydrogeology. Both minimization of cost and maximization of NAPL removal requires detailed characterization of sites contaminant distribution and hydrogeology. Assessment of the feasibility of surfactant-enhanced remediation is dependent upon a detailed site characterization.

  18. Urban forests

    Treesearch

    David J. Nowak; Eric J. Greenfield

    2016-01-01

    Trees and forests are resources that significantly affect the health and well-being of people who live in urban areas where more than 80 percent of the U.S. population resides. These trees within our cities and communities provide many ecosystem services and values to both urban and rural populations. Healthy urban and rural forests are critical for sustaining quality...

  19. Urban Education

    ERIC Educational Resources Information Center

    Gordon, Edmund W.

    2003-01-01

    The research literature on urban education has tended to focus on the problems of low-status minority groups, the complexity of urban school systems, and the financing and governance of such systems. Given this focus, the deeper problems and the significant opportunities associated with the condition of urbanicity have not yet been properly…

  20. Status report: Fernald site remediation

    SciTech Connect

    Craig, J.R. Jr.; Saric, J.A.; Schneider, T.; Yates, M.K.

    1995-01-30

    The Fernald site is rapidly transitioning from a Remedial Investigation/ Feasibility Study (RI/FS) site to one where design and construction of the remedies dominates. Fernald is one of the first sites in the Department of Energy (DOE) complex to accomplish this task and real physical progress is being made in moving the five operable units through the CERCLA process. Two of the required Records of Decision (ROD) are in hand and all five operable units will have received their RODs (IROD for OU3) by the end of 1995. Pre-design investigations, design work or construction are now in progress on the operable units. The lessons learned from the work done to date include implementing innovations in the RI and FS process as well as effective use of Removal Actions to begin the actual site remediation. Also, forging close working relationships with the Federal and State Regulators, citizens action groups and the Fernald Citizens Task Force has helped move the program forward. The Fernald successes have been achieved by close coordination and cooperation among all groups working on the projects and by application of innovative technologies within the decision making process.

  1. Environmental Remediation Data Management Tools

    SciTech Connect

    Wierowski, J. V.; Henry, L. G.; Dooley, D. A.

    2002-02-26

    Computer software tools for data management can improve site characterization, planning and execution of remediation projects. This paper discusses the use of two such products that have primarily been used within the nuclear power industry to enhance the capabilities of radiation protection department operations. Advances in digital imaging, web application development and programming technologies have made development of these tools possible. The Interactive Visual Tour System (IVTS) allows the user to easily create and maintain a comprehensive catalog containing digital pictures of the remediation site. Pictures can be cataloged in groups (termed ''tours'') that can be organized either chronologically or spatially. Spatial organization enables the user to ''walk around'' the site and view desired areas or components instantly. Each photo is linked to a map (floor plan, topographical map, elevation drawing, etc.) with graphics displaying the location on the map and any available tour/component links. Chronological organization enables the user to view the physical results of the remediation efforts over time. Local and remote management teams can view these pictures at any time and from any location. The Visual Survey Data System (VSDS) allows users to record survey and sample data directly on photos and/or maps of areas and/or components. As survey information is collected for each area, survey data trends can be reviewed for any repetitively measured location or component. All data is stored in a Quality Assurance (Q/A) records database with reference to its physical sampling point on the site as well as other information to support the final closeout report for the site. The ease of use of these web-based products has allowed nuclear power plant clients to plan outage work from their desktop and realize significant savings with respect to dose and cost. These same tools are invaluable for remediation and decommissioning planning of any scale and for recording

  2. Remediation plans in family medicine residency

    PubMed Central

    Audétat, Marie-Claude; Voirol, Christian; Béland, Normand; Fernandez, Nicolas; Sanche, Gilbert

    2015-01-01

    Abstract Objective To assess use of the remediation instrument that has been implemented in training sites at the University of Montreal in Quebec to support faculty in diagnosing and remediating resident academic difficulties, to examine whether and how this particular remediation instrument improves the remediation process, and to determine its effects on the residents’ subsequent rotation assessments. Design A multimethods approach in which data were collected from different sources: remediation plans developed by faculty, program statistics for the corresponding academic years, and students’ academic records and rotation assessment results. Setting Family medicine residency program at the University of Montreal. Participants Family medicine residents in academic difficulty. Main outcome measures Assessment of the content, process, and quality of remediation plans, and students’ academic and rotation assessment results (successful, below expectations, or failure) both before and after the remediation period. Results The framework that was developed for assessing remediation plans was used to analyze 23 plans produced by 10 teaching sites for 21 residents. All plans documented cognitive problems and implemented numerous remediation measures. Although only 48% of the plans were of good quality, implementation of a remediation plan was positively associated with the resident’s success in rotations following the remediation period. Conclusion The use of remediation plans is well embedded in training sites at the University of Montreal. The residents’ difficulties were mainly cognitive in nature, but this generally related to deficits in clinical reasoning rather than knowledge gaps. The reflection and analysis required to produce a remediation plan helps to correct many academic difficulties and normalize the academic career of most residents in difficulty. Further effort is still needed to improve the quality of plans and to support teachers.

  3. [Natural remedies during pregnancy and lactation].

    PubMed

    Gut, E; Melzer, J; von Mandach, U; Saller, R

    2004-10-01

    Up to date there is a lack of systematically gathered data on the use of natural remedies (phytotherapeutic, homeopathic, anthroposophic, spagyric, Bach and Schussler remedies) during pregnancy and lactation. The aim of this non-representative pilot study on 139 women, who came for delivery to three institutions between mid-1997 and the beginning of 1998, was to receive data about how often and within which spectrum natural remedies are used during pregnancy and lactation. During pregnancy 96% and within the lactation period 84% of the women consumed at least 1 natural remedy. Phytotherapeutic drugs were used most frequently. In contrast to the widespread use of natural remedies by pregnant women and nursing mothers in this study, little information on the effectiveness and possible risks is available. Therefore it seems necessary to examine and evaluate natural remedies used during pregnancy and lactation.

  4. Remediation tradeoffs addressed with simulated annealing optimization

    SciTech Connect

    Rogers, L. L., LLNL

    1998-02-01

    Escalation of groundwater remediation costs has encouraged both advances in optimization techniques to balance remediation objectives and economics and development of innovative technologies to expedite source region clean-ups. We present an optimization application building on a pump-and-treat model, yet assuming a prior removal of different portions of the source area to address the evolving management issue of more aggressive source remediation. Separate economic estimates of in-situ thermal remediation are combined with the economic estimates of the subsequent optimal pump-and-treat remediation to observe tradeoff relationships of cost vs. highest remaining contamination levels (hot spot). The simulated annealing algorithm calls the flow and transport model to evaluate the success of a proposed remediation scenario at a U.S.A. Superfund site contaminated with volatile organic compounds (VOCs).

  5. Lessons learned from hazardous waste remediation

    SciTech Connect

    Leibfarth, E.C.

    1992-10-01

    In the nine-year history of hazardous waste remediation at the Savannah River Site, many techniques have been employed. Since the activities and the technology applied to these activities were new to the Site, many of the techniques employed were new and innovative, and the Site has developed hands on remediation experience. This presentation reviews lessons learned during hazardous waste remediation activities at the Site.

  6. Lessons learned from hazardous waste remediation

    SciTech Connect

    Leibfarth, E.C.

    1992-01-01

    In the nine-year history of hazardous waste remediation at the Savannah River Site, many techniques have been employed. Since the activities and the technology applied to these activities were new to the Site, many of the techniques employed were new and innovative, and the Site has developed hands on remediation experience. This presentation reviews lessons learned during hazardous waste remediation activities at the Site.

  7. ELECTROCHEMICAL REMEDIATION TECHNOLOGIES (ECRTS) - IN SITU REMEDIATION OF CONTAMINATED MARINE SEDIMENTS

    EPA Science Inventory

    This Innovative Technology Evaulation Report summarizes the results of the evaluation of the Electrochemical Remediation Technologies (ECRTs) process, developed by P2-Soil Remediation, Inc. (in partnership with Weiss Associates and Electro-Petroleum, Inc.). This evaluation was co...

  8. Air-Based Remediation Workshop - Section 8 Air-Based Remediation Technology Selection Logic

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sites," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  9. Air-Based Remediation Workshop - Section 7 Sustainable Remediation And Air-Based Technologies

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sites, " the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Enviro...

  10. Air-Based Remediation Workshop - Section 8 Air-Based Remediation Technology Selection Logic

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sites," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  11. ELECTROCHEMICAL REMEDIATION TECHNOLOGIES (ECRTS) - IN SITU REMEDIATION OF CONTAMINATED MARINE SEDIMENTS

    EPA Science Inventory

    This Innovative Technology Evaulation Report summarizes the results of the evaluation of the Electrochemical Remediation Technologies (ECRTs) process, developed by P2-Soil Remediation, Inc. (in partnership with Weiss Associates and Electro-Petroleum, Inc.). This evaluation was co...

  12. Assessing remediation of contaminated sediments using multiple biological endpoints: sediment toxicity, food web tissue contamination, biotic condition and DNA damage.

    EPA Science Inventory

    The Ottawa River is a component of the Maumee River Area of Concern (AOC) as defined by the International Joint Commission’s Great Lakes Water Quality Agreement. A sediment remediation project took place in the lower 14.2 km of the river where urban and industrial activitie...

  13. Assessing remediation of contaminated sediments using multiple biological endpoints: sediment toxicity, food web tissue contamination, biotic condition and DNA damage.

    EPA Science Inventory

    The Ottawa River is a component of the Maumee River Area of Concern (AOC) as defined by the International Joint Commission’s Great Lakes Water Quality Agreement. A sediment remediation project took place in the lower 14.2 km of the river where urban and industrial activitie...

  14. Geostatistical applications in environmental remediation

    SciTech Connect

    Stewart, R.N.; Purucker, S.T.; Lyon, B.F.

    1995-02-01

    Geostatistical analysis refers to a collection of statistical methods for addressing data that vary in space. By incorporating spatial information into the analysis, geostatistics has advantages over traditional statistical analysis for problems with a spatial context. Geostatistics has a history of success in earth science applications, and its popularity is increasing in other areas, including environmental remediation. Due to recent advances in computer technology, geostatistical algorithms can be executed at a speed comparable to many standard statistical software packages. When used responsibly, geostatistics is a systematic and defensible tool can be used in various decision frameworks, such as the Data Quality Objectives (DQO) process. At every point in the site, geostatistics can estimate both the concentration level and the probability or risk of exceeding a given value. Using these probability maps can assist in identifying clean-up zones. Given any decision threshold and an acceptable level of risk, the probability maps identify those areas that are estimated to be above or below the acceptable risk. Those areas that are above the threshold are of the most concern with regard to remediation. In addition to estimating clean-up zones, geostatistics can assist in designing cost-effective secondary sampling schemes. Those areas of the probability map with high levels of estimated uncertainty are areas where more secondary sampling should occur. In addition, geostatistics has the ability to incorporate soft data directly into the analysis. These data include historical records, a highly correlated secondary contaminant, or expert judgment. The role of geostatistics in environmental remediation is a tool that in conjunction with other methods can provide a common forum for building consensus.

  15. Assessing sustainable remediation frameworks using sustainability principles.

    PubMed

    Ridsdale, D Reanne; Noble, Bram F

    2016-12-15

    The remediation industry has grown exponentially in recent decades. International organizations of practitioners and remediation experts have developed several frameworks for integrating sustainability into remediation projects; however, there has been limited attention to how sustainability is approached and operationalized in sustainable remediation frameworks and practices - or whether sustainability plays any meaningful role at all in sustainable remediation. This paper examines how sustainability is represented in remediation frameworks and the guidance provided for practical application. Seven broad sustainability principles and review criteria are proposed and applied to a sample of six international remediation frameworks. Not all review criteria were equally satisfied and none of the frameworks fully met all criteria; however, the best performing frameworks were those identified as sustainability remediation frameworks. Intra-generational equity was addressed by all frameworks. Integrating social, economic and biophysical components beyond triple-bottom-line indicators was explicitly addressed only by the sustainable remediation frameworks. No frameworks provided principle- or rule-based guidance for dealing with trade-offs in sustainability decisions.

  16. Nuclear facility decommissioning and site remedial actions

    SciTech Connect

    Knox, N.P.; Webb, J.R.; Ferguson, S.D.; Goins, L.F.; Owen, P.T.

    1990-09-01

    The 394 abstracted references on environmental restoration, nuclear facility decommissioning, uranium mill tailings management, and site remedial actions constitute the eleventh in a series of reports prepared annually for the US Department of Energy's Remedial Action Programs. Citations to foreign and domestic literature of all types -- technical reports, progress reports, journal articles, symposia proceedings, theses, books, patents, legislation, and research project descriptions -- have been included. The bibliography contains scientific, technical, economic, regulatory, and legal information pertinent to the US Department of Energy's Remedial Action Programs. Major sections are (1) Surplus Facilities Management Program, (2) Nuclear Facilities Decommissioning, (3) Formerly Utilized Sites Remedial Action Programs, (4) Facilities Contaminated with Naturally Occurring Radionuclides, (5) Uranium Mill Tailings Remedial Action Program, (6) Grand Junction Remedial Action Program, (7) Uranium Mill Tailings Management, (8) Technical Measurements Center, (9) Remedial Action Program, and (10) Environmental Restoration Program. Within these categories, references are arranged alphabetically by first author. Those references having no individual author are listed by corporate affiliation or by publication title. Indexes are provided for author, corporate affiliation, title word, publication description, geographic location, subject category, and keywords. This report is a product of the Remedial Action Program Information Center (RAPIC), which selects and analyzes information on remedial actions and relevant radioactive waste management technologies.

  17. Tank waste remediation system (TWRS) mission analysis

    SciTech Connect

    Rieck, R.H.

    1996-10-03

    The Tank Waste Remediation System Mission Analysis provides program level requirements and identifies system boundaries and interfaces. Measures of success appropriate to program level accomplishments are also identified.

  18. Groundwater remediation at a wood preservatives site

    SciTech Connect

    Mital, H.K.; Damera, R.

    1994-12-31

    A wood treatment facility in Pennsylvania allegedly discharged about a million gallons of spent wood preservatives containing pentachlorophenol into a well from 1947 to 1963. Contaminated water was noticed in a creek adjacent to the site and was reported by the residents in 1972. Subsequently this site was placed on the National Priorities List (NPL) by the EPA in 1982. Tetra Tech, Inc. has performed Remedial Investigations (RI), Feasibility Studies (FS), Remedial Designs (RD) and Remedial Action (RA) at this Superfund site, for five years. This paper presents an overview of RI, FS, RD and treatability studies related to groundwater remediation.

  19. Electrokinetic remediation of oil-contaminated soils.

    PubMed

    Korolev, Vladimir A; Romanyukha, Olga V; Abyzova, Anna M

    2008-07-01

    This investigation was undertaken to determine the factors influencing electrokinetic remediation of soils from petroleum pollutants. The remediation method was applied in two versions: (i) static and (ii) flowing, when a sample was washed with leaching solution. It was found that all the soils studied can be purified using this technique. It was also observed that the mineral and grain-size composition of soils, their properties, and other parameters affect the remediation efficiency. The static and flowing versions of the remediation method removed 25-75% and 90-95% of the petroleum pollutants, respectively from the soils under study.

  20. Night Blindness and Ancient Remedy

    PubMed Central

    Al Binali, H.A. Hajar

    2014-01-01

    The aim of this article is to briefly review the history of night blindness and its treatment from ancient times until the present. The old Egyptians, the Babylonians, the Greeks and the Arabs used animal liver for treatment and successfully cured the disease. The author had the opportunity to observe the application of the old remedy to a patient. Now we know what the ancients did not know, that night blindness is caused by Vitamin A deficiency and the animal liver is the store house for Vitamin A. PMID:25774260

  1. Tank Waste Remediation System Guide

    SciTech Connect

    Robershotte, M.A.; Dirks, L.L.; Seaver, D.A.; Bothers, A.J.; Madden, M.S.

    1995-06-01

    The scope, number and complexity of Tank Waste Remediation System (TWRS) decisions require an integrated, consistent, and logical approach to decision making. TWRS has adopted a seven-step decision process applicable to all decisions. Not all decisions, however, require the same degree of rigor/detail. The decision impact will dictate the appropriate required detail. In the entire process, values, both from the public as well as from the decision makers, play a key role. This document concludes with a general discussion of the implementation process that includes the roles of concerned parties.

  2. GROUND WATER REMEDIATION RESEARCH: PERMEABLE REACTIVE BARRIERS AND SOURCE ZONE REMEDIATION

    EPA Science Inventory

    An overview of ground water remediation research conducted at the Subsurface Protection and Remediation Division is provided. The focus of the overview is on Permeable Reactive Barriers for treatment of organic and inorganic contaminants and remediation of DNAPL source zones.

  3. 40 CFR 300.430 - Remedial investigation/feasibility study and selection of remedy.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 29 2012-07-01 2012-07-01 false Remedial investigation/feasibility study and selection of remedy. 300.430 Section 300.430 Protection of Environment ENVIRONMENTAL... human health and the environment. Remedial actions are to be implemented as soon as site data...

  4. GROUND WATER REMEDIATION RESEARCH: PERMEABLE REACTIVE BARRIERS AND SOURCE ZONE REMEDIATION

    EPA Science Inventory

    An overview of ground water remediation research conducted at the Subsurface Protection and Remediation Division is provided. The focus of the overview is on Permeable Reactive Barriers for treatment of organic and inorganic contaminants and remediation of DNAPL source zones.

  5. Characterization technologies for environmental remediation

    SciTech Connect

    Pruett, J.G.

    1991-01-01

    Improved site characterization technologies are being developed at Martin Marietta Energy Systems for the US Department of Energy (DOE) Office of Technology Development (OTD) in support of environmental restoration activities throughout the DOE complex. Since site characterization is an expensive and time consuming process that must be performed prior to, during, and following remediation efforts, an obvious way to reduce the overall cost of remediation is to develop improved characterization methods. For example, the Derivative Ultraviolet Absorption Spectrometer (DUVAS), which is being field tested as part of the OTD program, is a fiberoptic device for in situ, real time measurement of aromatic organic compounds in groundwater. A transportable, direct sampling Ion Trap Mass Spectrometer (ITMS) is being developed for continuous monitoring of hazardous organic compounds in air. In areas where the environment is hazardous to human health, it is desirous to perform site characterization remotely; if robotics are to be employed, the Ultrasonic Ranging and Data System (USRADS) can be used to provide telemetry information on robot location as well as sensor measurements. Once fully developed, these technologies can be transferred to the private sector. 19 refs., 2 tabs.

  6. Lasagna{trademark} soil remediation

    SciTech Connect

    1996-04-01

    Lasagna{trademark} is an integrated, in situ remediation technology being developed by an industrial consortium consisting of Monsanto, E. I. DuPont de Nemours & Co., Inc. (DuPont), and General Electric, with participation from the Department of Energy (DOE) Office of Environmental Management, Office of Science and Technology (EM-50), and the Environmental Protection Agency (EPA) Office of Research and Development (Figure 1). Lasagna{trademark} remediates soils and soil pore water contaminated with soluble organic compounds. Lasagna{trademark} is especially suited to sites with low permeability soils where electroosmosis can move water faster and more uniformly than hydraulic methods, with very low power consumption. The process uses electrokinetics to move contaminants in soil pore water into treatment zones where the contaminants can be captured or decomposed. Initial focus is on trichloroethylene (TCE), a major contaminant at many DOE and industrial sites. Both vertical and horizontal configurations have been conceptualized, but fieldwork to date is more advanced for the vertical configuration.

  7. Lasagna{trademark} soil remediation

    SciTech Connect

    1996-04-01

    Lasagna{trademark} is an integrated, in situ remediation technology being developed which remediates soils and soil pore water contaminated with soluble organic compounds. Lasagna{trademark} is especially suited to sites with low permeability soils where electroosmosis can move water faster and more uniformly than hydraulic methods, with very low power consumption. The process uses electrokinetics to move contaminants in soil pore water into treatment zones where the contaminants can be captured and decomposed. Initial focus is on trichloroethylene (TCE), a major contaminant at many DOE and industrial sites. Both vertical and horizontal configurations have been conceptualized, but fieldwork to date is more advanced for the vertical configuration. Major features of the technology are electrodes energized by direct current, which causes water and soluble contaminants to move into or through the treatment layers and also heats the soil; treatment zones containing reagents that decompose the soluble organic contaminants or adsorb contaminants for immobilization or subsequent removal and disposal; and a water management system that recycles the water that accumulates at the cathode (high pH) back to the anode (low pH) for acid-base neutralization. Alternatively, electrode polarity can be reversed periodically to reverse electroosmotic flow and neutralize pH.

  8. Water resources and the urban environment--98

    SciTech Connect

    Wilson, T.E.

    1998-07-01

    This report contains all the papers presented at the meeting. There are 25 sessions and one poster session in the document. The Sessions are: (1) Landfill gas/groundwater interactions; (2) Urban solids management; (3) Local issues; (4) Surface water quality studies 1; (5) Reductive treatment of hazardous wastes with zero-valent iron; (6) Water reuse 1; (7) Biosolids management; (8) GIS information systems 1; (9) Drinking water distribution; (10) Anaerobic treatment; (11) Water reuse 2; (12) Municipal wastewater treatment technology; (13) GIS information systems 2; (14) Drinking water treatment 1; (15) Risk-based site remediation; (16) Small urban watersheds; (17) Disinfection; (18) Air pollution control and risk assessment; (19) Drinking water treatment 2; (20) Biological wastewater treatment; (21) Wastewater treatment; (22) Decentralized small-scale alternative wastewater management systems; (23) General environmental issues; (24) Drinking water treatment 3; and (25) Groundwater remediation. Papers have been processed separately for inclusion on the database.

  9. 300-FF-1 remedial design report/remedial action work plan

    SciTech Connect

    Gustafson, F.W.

    1997-02-01

    The 300 Area has been divided into three operable units 300-FF-1, 300-FF-2, and 300-FF-5 all of which are in various stages of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) process. The 300-FF-1 Operable Unit, the subject of this report, includes liquid waste disposal sites, landfills, and a burial ground. This Remedial Design Report/Remedial Action Work Plan (RDR/RAWP) provides a summary description of each waste site included in the 300-FF-1 Operable Unit, the basis for remedial actions to be taken, and the remedial action approach and management process for implementing these actions. The remedial action approach and management sections provide a description of the remedial action process description, the project schedule, the project team, required planning documentation, the remedial action change process, the process for verifying attainment of the remedial action goals, and the required CERCLA and RCRA closeout documentation. Appendix A provides additional details on each waste site. In addition to remediation of the waste sites, waste generated during the remedial investigation/feasibility study portions of the project will also be disposed at the Environmental Restoration Disposal Facility (ERDF). Appendix B provides a summary of the modeling performed in the 300-FF-1 Phase 3 FS and a description of the modeling effort to be used to show attainment of the remedial action goals. Appendix C provides the sampling and analysis plan (SAP) for all sampling and field-screening activities performed during remediation and for verification of attainment with the remedial action goals. Appendix D provides the public involvement plan, prepared to ensure information is provided to the public during remedial design and remedial action processes.

  10. Go native: blue gamma-buffalo grass and compost benefits urban soil

    USDA-ARS?s Scientific Manuscript database

    Urban construction sites often have excessive erosion and compaction after topsoil removal, scraping, and grading. The purpose of this study is to determine if compaction remediation efforts are effective on a simulated urban site. The sod and topsoil were removed, the area was graded to a 1% slope,...

  11. Effectiveness of remediation of metal-contaminated mangrove sediments (Sydney estuary, Australia).

    PubMed

    Birch, Gavin; Nath, Bibhash; Chaudhuri, Punarbasu

    2015-04-01

    Industrial activities and urbanization have had a major consequence for estuarine ecosystem health and water quality globally. Likewise, Sydney estuary has been significantly impacted by widespread, poor industrial practices in the past, and remediation of legacy contaminants have been undertaken in limited parts of this waterway. The objective of the present investigation was to determine the effectiveness of remediation of a former Pb-contaminated industrial site in Homebush Bay on Sydney estuary (Australia) through sampling of inter-tidal sediments and mangrove (Avicennia marina) tissue (fine nutritive roots, pneumatophores, and leaves). Results indicate that since remediation 6 years previously, Pb and other metals (Cu, Ni and Zn) in surficial sediment have increased to concentrations that approach pre-remediation levels and that they were considerably higher than pre-settlement levels (3-30 times), as well as at the reference site. Most metals were compartmentalized in fine nutritive roots with bio-concentration factors greater than unity, while tissues of pneumatophores and leaves contained low metal concentrations. Lead concentrations in fine nutritive root, pneumatophore, and leaf tissue of mangroves from the remediated site were similar to trees in un-remediated sites of the estuary and were substantially higher than plants at the reference site. The situation for Zn in fine nutritive root tissue was similar. The source of the metals was either surface/subsurface water from the catchment or more likely remobilized contaminated sediment from un-remediated parts of Homebush Bay. Results of this study demonstrate the problems facing management in attempting to reduce contamination in small parts of a large impacted area to concentrations below local base level.

  12. GROUND WATER REMEDIATION RESEARCH: ENHANCED BIOREMEDIATION AND MONITORED NATURAL ATTENUATION

    EPA Science Inventory

    An overview of ground water remediation research conducted at the Subsurface Protection and Remediation Division is provided. The focus of the overview is on Enhanced Bioremediation and Monitored Natural Attenuation research for the remediation of organic and inorganic contamina...

  13. GROUND WATER REMEDIATION RESEARCH: ENHANCED BIOREMEDIATION AND MONITORED NATURAL ATTENUATION

    EPA Science Inventory

    An overview of ground water remediation research conducted at the Subsurface Protection and Remediation Division is provided. The focus of the overview is on Enhanced Bioremediation and Monitored Natural Attenuation research for the remediation of organic and inorganic contamina...

  14. SIMULATION OF SURFACTANT-ENHANCED AQUIFER REMEDIATION

    EPA Science Inventory

    Surfactant-enhanced aquifer remediation (SEAR) is currently under active investigation as one of the most promising alternatives to conventional pump-and-treat remediation for aquifers contaminated by dense nonaqueous phase organic liquids. An existing three-dimensional finite-di...

  15. Greener and sustainable remediation using iron nanomaterials

    EPA Science Inventory

    The main goal of remediation is to protect humans and the environment. Unfortunately, many remedial actions in the past concentrated more on site-specific environmental risks and conditions completely ignoring external social and economic impacts. Thus, new approach called green ...

  16. Laboratory Experiment on Electrokinetic Remediation of Soil

    ERIC Educational Resources Information Center

    Elsayed-Ali, Alya H.; Abdel-Fattah, Tarek; Elsayed-Ali, Hani E.

    2011-01-01

    Electrokinetic remediation is a method of decontaminating soil containing heavy metals and polar organic contaminants by passing a direct current through the soil. An undergraduate chemistry laboratory is described to demonstrate electrokinetic remediation of soil contaminated with copper. A 30 cm electrokinetic cell with an applied voltage of 30…

  17. 18 CFR 706.103 - Remedial action.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 18 Conservation of Power and Water Resources 2 2014-04-01 2014-04-01 false Remedial action. 706.103 Section 706.103 Conservation of Power and Water Resources WATER RESOURCES COUNCIL EMPLOYEE... penalty prescribed by law; or (4) Disqualification for a particular assignment. (b) Remedial...

  18. 18 CFR 706.103 - Remedial action.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 18 Conservation of Power and Water Resources 2 2013-04-01 2012-04-01 true Remedial action. 706.103 Section 706.103 Conservation of Power and Water Resources WATER RESOURCES COUNCIL EMPLOYEE... penalty prescribed by law; or (4) Disqualification for a particular assignment. (b) Remedial...

  19. 18 CFR 706.103 - Remedial action.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 18 Conservation of Power and Water Resources 2 2012-04-01 2012-04-01 false Remedial action. 706.103 Section 706.103 Conservation of Power and Water Resources WATER RESOURCES COUNCIL EMPLOYEE... penalty prescribed by law; or (4) Disqualification for a particular assignment. (b) Remedial...

  20. 42 CFR 51.10 - Remedial actions.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 1 2013-10-01 2013-10-01 false Remedial actions. 51.10 Section 51.10 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GRANTS REQUIREMENTS APPLICABLE TO THE PROTECTION AND ADVOCACY FOR INDIVIDUALS WITH MENTAL ILLNESS PROGRAM Basic Requirements § 51.10 Remedial...

  1. 42 CFR 51.10 - Remedial actions.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 1 2011-10-01 2011-10-01 false Remedial actions. 51.10 Section 51.10 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GRANTS REQUIREMENTS APPLICABLE TO THE PROTECTION AND ADVOCACY FOR INDIVIDUALS WITH MENTAL ILLNESS PROGRAM Basic Requirements § 51.10 Remedial...

  2. 42 CFR 51.10 - Remedial actions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Remedial actions. 51.10 Section 51.10 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GRANTS REQUIREMENTS APPLICABLE TO THE PROTECTION AND ADVOCACY FOR INDIVIDUALS WITH MENTAL ILLNESS PROGRAM Basic Requirements § 51.10 Remedial...

  3. 42 CFR 51.10 - Remedial actions.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 1 2012-10-01 2012-10-01 false Remedial actions. 51.10 Section 51.10 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GRANTS REQUIREMENTS APPLICABLE TO THE PROTECTION AND ADVOCACY FOR INDIVIDUALS WITH MENTAL ILLNESS PROGRAM Basic Requirements § 51.10 Remedial...

  4. 42 CFR 51.10 - Remedial actions.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 1 2014-10-01 2014-10-01 false Remedial actions. 51.10 Section 51.10 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GRANTS REQUIREMENTS APPLICABLE TO THE PROTECTION AND ADVOCACY FOR INDIVIDUALS WITH MENTAL ILLNESS PROGRAM Basic Requirements § 51.10 Remedial...

  5. 45 CFR 1177.3 - Other remedies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... HUMANITIES NATIONAL ENDOWMENT FOR THE HUMANITIES CLAIMS COLLECTION § 1177.3 Other remedies. The remedies and sanctions available to the National Endowment for the Humanities under this part are not intended to be exclusive. The Chairperson of the National Endowment for the Humanities or his designee may impose other...

  6. 45 CFR 1177.3 - Other remedies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... HUMANITIES NATIONAL ENDOWMENT FOR THE HUMANITIES CLAIMS COLLECTION § 1177.3 Other remedies. The remedies and sanctions available to the National Endowment for the Humanities under this part are not intended to be exclusive. The Chairperson of the National Endowment for the Humanities or his designee may impose other...

  7. 45 CFR 1177.3 - Other remedies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... HUMANITIES NATIONAL ENDOWMENT FOR THE HUMANITIES CLAIMS COLLECTION § 1177.3 Other remedies. The remedies and sanctions available to the National Endowment for the Humanities under this part are not intended to be exclusive. The Chairperson of the National Endowment for the Humanities or his designee may impose other...

  8. 45 CFR 1177.3 - Other remedies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... HUMANITIES NATIONAL ENDOWMENT FOR THE HUMANITIES CLAIMS COLLECTION § 1177.3 Other remedies. The remedies and sanctions available to the National Endowment for the Humanities under this part are not intended to be exclusive. The Chairperson of the National Endowment for the Humanities or his designee may impose other...

  9. 45 CFR 1177.3 - Other remedies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... HUMANITIES NATIONAL ENDOWMENT FOR THE HUMANITIES CLAIMS COLLECTION § 1177.3 Other remedies. The remedies and sanctions available to the National Endowment for the Humanities under this part are not intended to be exclusive. The Chairperson of the National Endowment for the Humanities or his designee may impose other...

  10. READING AND WRITING, THE REMEDIAL PROGRAM.

    ERIC Educational Resources Information Center

    Euclid English Demonstration Center, OH.

    THE PAPERS IN THIS COLLECTION EXPLAIN THE JUNIOR HIGH SCHOOL REMEDIAL PROGRAM IN READING AND WRITING DEVELOPED BY THE EUCLID ENGLISH DEMONSTRATION CENTER, THEY ARE (1) "REMEDIAL CLASSES AND THE TOTAL ENGLISH PROGRAM," BY GEORGE HILLOCKS, (2) "DEFINITION, ORIGIN, AND TREATMENT OF UNDERACHIEVEMENT," BY JANE W. KESSLER, (3)…

  11. 10 CFR 1706.10 - Remedies.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 4 2014-01-01 2014-01-01 false Remedies. 1706.10 Section 1706.10 Energy DEFENSE NUCLEAR FACILITIES SAFETY BOARD ORGANIZATIONAL AND CONSULTANT CONFLICTS OF INTERESTS § 1706.10 Remedies. The refusal to provide the certificate, or upon request of the contracting officer the additional...

  12. 10 CFR 1706.10 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Remedies. 1706.10 Section 1706.10 Energy DEFENSE NUCLEAR FACILITIES SAFETY BOARD ORGANIZATIONAL AND CONSULTANT CONFLICTS OF INTERESTS § 1706.10 Remedies. The refusal to provide the certificate, or upon request of the contracting officer the additional...

  13. 10 CFR 1706.10 - Remedies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 4 2012-01-01 2012-01-01 false Remedies. 1706.10 Section 1706.10 Energy DEFENSE NUCLEAR FACILITIES SAFETY BOARD ORGANIZATIONAL AND CONSULTANT CONFLICTS OF INTERESTS § 1706.10 Remedies. The refusal to provide the certificate, or upon request of the contracting officer the additional...

  14. 10 CFR 1706.10 - Remedies.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 4 2013-01-01 2013-01-01 false Remedies. 1706.10 Section 1706.10 Energy DEFENSE NUCLEAR FACILITIES SAFETY BOARD ORGANIZATIONAL AND CONSULTANT CONFLICTS OF INTERESTS § 1706.10 Remedies. The refusal to provide the certificate, or upon request of the contracting officer the additional...

  15. 10 CFR 1706.10 - Remedies.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 4 2011-01-01 2011-01-01 false Remedies. 1706.10 Section 1706.10 Energy DEFENSE NUCLEAR FACILITIES SAFETY BOARD ORGANIZATIONAL AND CONSULTANT CONFLICTS OF INTERESTS § 1706.10 Remedies. The refusal to provide the certificate, or upon request of the contracting officer the additional...

  16. 34 CFR 682.413 - Remedial actions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ..., DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Administration of the Federal Family Education Loan Programs by a Guaranty Agency § 682.413 Remedial actions. (a)(1) The... 34 Education 4 2012-07-01 2012-07-01 false Remedial actions. 682.413 Section 682.413...

  17. 34 CFR 682.413 - Remedial actions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ..., DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Administration of the Federal Family Education Loan Programs by a Guaranty Agency § 682.413 Remedial actions. (a)(1) The... 34 Education 4 2014-07-01 2014-07-01 false Remedial actions. 682.413 Section 682.413...

  18. 34 CFR 682.413 - Remedial actions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Administration of the Federal Family Education Loan Programs by a Guaranty Agency § 682.413 Remedial actions. (a)(1) The... 34 Education 4 2011-07-01 2011-07-01 false Remedial actions. 682.413 Section 682.413...

  19. 34 CFR 682.413 - Remedial actions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ..., DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Administration of the Federal Family Education Loan Programs by a Guaranty Agency § 682.413 Remedial actions. (a)(1) The... 34 Education 4 2013-07-01 2013-07-01 false Remedial actions. 682.413 Section 682.413...

  20. Remedial Testing and Placement in Community Colleges

    ERIC Educational Resources Information Center

    Horn, Catherine; McCoy, Zoe; Campbell, Lea; Brock, Cheryl

    2009-01-01

    Almost half of students who enter college require some sort of remedial coursework. Further, states are increasingly moving the responsibility of postsecondary remediation away from four-year campuses to two-year institutions. Scholars and policymakers have grappled with best practice for successfully filling in academic gaps and moving students…

  1. 10 CFR 205.199I - Remedies.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Remedies. 205.199I Section 205.199I Energy DEPARTMENT OF ENERGY OIL ADMINISTRATIVE PROCEDURES AND SANCTIONS Notice of Probable Violation, Remedial Order, Notice... person to whom it is directed to roll back prices, to make refunds equal to the amount (plus...

  2. 10 CFR 205.199I - Remedies.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Remedies. 205.199I Section 205.199I Energy DEPARTMENT OF ENERGY OIL ADMINISTRATIVE PROCEDURES AND SANCTIONS Notice of Probable Violation, Remedial Order, Notice... person to whom it is directed to roll back prices, to make refunds equal to the amount (plus...

  3. Should Student Affairs Offer Remedial Education?

    ERIC Educational Resources Information Center

    Burley, Hansel E.; Butner, Bonita K.

    2000-01-01

    Examines the opinions of 108 community college chief student affairs officers regarding whether student affairs offices should offer remedial instruction. Through examination of personal and institutional variables, two opposing opinions emerged - one for student affairs offering remediation and the other against. Few characteristics significantly…

  4. 40 CFR 13.4 - Other remedies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Other remedies. 13.4 Section 13.4... Other remedies. (a) This regulation does not supersede or require omission or duplication of administrative proceedings required by contract, statute, regulation or other Agency procedures, e.g.,...

  5. 45 CFR 1303.4 - Remedies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 4 2011-10-01 2011-10-01 false Remedies. 1303.4 Section 1303.4 Public Welfare Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH... from pursuing any other remedies authorized by law....

  6. 45 CFR 1303.4 - Remedies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 45 Public Welfare 4 2014-10-01 2014-10-01 false Remedies. 1303.4 Section 1303.4 Public Welfare Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH... from pursuing any other remedies authorized by law....

  7. 45 CFR 1303.4 - Remedies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 45 Public Welfare 4 2013-10-01 2013-10-01 false Remedies. 1303.4 Section 1303.4 Public Welfare Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH... from pursuing any other remedies authorized by law....

  8. 39 CFR 3030.50 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Remedies. 3030.50 Section 3030.50 Postal Service POSTAL REGULATORY COMMISSION PERSONNEL RULES FOR COMPLAINTS Commission Determinations and Relief § 3030.50 Remedies. (a) If the Commission finds that a complaint is justified, it will order that the Postal...

  9. 14 CFR 17.23 - Protest remedies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... the circumstances surrounding the procurement or proposed procurement including, but not limited to... feasibility of any proposed remedy; the urgency of the procurement; the cost and impact of the recommended remedy; and the impact on the Agency's mission. (c) Attorney's fees of a prevailing protester...

  10. 14 CFR 17.23 - Protest remedies.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... the circumstances surrounding the procurement or proposed procurement including, but not limited to... feasibility of any proposed remedy; the urgency of the procurement; the cost and impact of the recommended remedy; and the impact on the Agency's mission. (c) Attorney's fees of a prevailing protester...

  11. 14 CFR 17.23 - Protest remedies.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... the circumstances surrounding the procurement or proposed procurement including, but not limited to... feasibility of any proposed remedy; the urgency of the procurement; the cost and impact of the recommended remedy; and the impact on the Agency's mission. (c) Attorney's fees of a prevailing protester...

  12. Tank waste remediation system compensatory measure removal

    SciTech Connect

    MILLIKEN, N.J.

    1999-05-18

    In support of Fiscal Year 1998 Performance Agreement TWR1.4.3, ''Replace Compensatory Measures,'' the Tank Waste Remediation System is documenting the completion of field modifications supporting the removal of the temporary exemptions from the approved Tank Waste Remediation System Technical Safety Requirements (TSRs), HNF-SD-WM-TSR-006. These temporary exemptions or compensatory measures expire September 30, 1998.

  13. 40 CFR 92.705 - Remedial plan.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... which support these conclusions. (11) Any other information, reports or data which the Administrator may... repair under the remedial plan to affix a label to each locomotive or locomotive engine repaired or, when required, inspected under the remedial plan. (2) The label shall be placed in such location as approved by...

  14. Laboratory Experiment on Electrokinetic Remediation of Soil

    ERIC Educational Resources Information Center

    Elsayed-Ali, Alya H.; Abdel-Fattah, Tarek; Elsayed-Ali, Hani E.

    2011-01-01

    Electrokinetic remediation is a method of decontaminating soil containing heavy metals and polar organic contaminants by passing a direct current through the soil. An undergraduate chemistry laboratory is described to demonstrate electrokinetic remediation of soil contaminated with copper. A 30 cm electrokinetic cell with an applied voltage of 30…

  15. Remedial Online Teaching on a Summer Course

    ERIC Educational Resources Information Center

    Rienties, Bart; Tempelaar, Dirk; Waterval, Dominique; Rehm, Martin; Gijselaers, Wim

    2006-01-01

    This paper is based on experiences with remedial online learning from a national collaboration initiative in the Netherlands involving the University of Amsterdam, Erasmus Rotterdam University and Maastricht University (www.web-spijkeren.nl). The central question is how prior knowledge tests and online remedial summer courses can contribute to…

  16. Mold Remediation in Schools and Commercial Buildings.

    ERIC Educational Resources Information Center

    Environmental Protection Agency, Washington, DC. Office of Radiation and Indoor Air.

    This document describes how to investigate and evaluate moisture and mold problems in educational facilities, and presents the key steps for implementing a remediation plan. A checklist is provided for conducting mold remediation efforts along with a resource list of helpful organizations and governmental agencies. Appendices contain a glossary,…

  17. An Honors Approach to Remedial Instruction.

    ERIC Educational Resources Information Center

    Lay, L. Clark

    A rationale is presented for an honors approach to remedial algebra instruction. Beginning with questions to be considered in the initial placement of students, the paper suggests that remedial students be enrolled at a level low enough to provide them with a reasonable chance to be good, even honors, students. It goes on to identify and contrast…

  18. New Mexico Math Remediation Taskforce Report

    ERIC Educational Resources Information Center

    New Mexico Higher Education Department, 2016

    2016-01-01

    The Math Remediation Task Force is comprised of faculty from two-year, four-year comprehensive, and four-year flagship higher education institutions throughout the state of New Mexico. Its members have varying levels of experience with designing/implementing multiple math remediation programs including traditional, co-requisite and acceleration…

  19. SIMULATION OF SURFACTANT-ENHANCED AQUIFER REMEDIATION

    EPA Science Inventory

    Surfactant-enhanced aquifer remediation (SEAR) is currently under active investigation as one of the most promising alternatives to conventional pump-and-treat remediation for aquifers contaminated by dense nonaqueous phase organic liquids. An existing three-dimensional finite-di...

  20. Remedial Reading Students at Moraine Valley.

    ERIC Educational Resources Information Center

    Reis, Elizabeth

    In an effort to assess the effectiveness of their remedial reading courses, Moraine Valley Community College (MVCC) in Palos Hills, Illinois, undertook a study of the retention, course completion, and graduation rates of students who completed one of three remedial reading courses: RDG-040, basic skills for students reading below the 7th grade…

  1. 30 CFR 270.7 - Remedies.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 2 2011-07-01 2011-07-01 false Remedies. 270.7 Section 270.7 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, REGULATION, AND ENFORCEMENT, DEPARTMENT OF THE INTERIOR OFFSHORE NONDISCRIMINATION IN THE OUTER CONTINENTAL SHELF § 270.7 Remedies. In addition to the penalties available under 30...

  2. 30 CFR 570.7 - Remedies.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 2 2012-07-01 2012-07-01 false Remedies. 570.7 Section 570.7 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, DEPARTMENT OF THE INTERIOR OFFSHORE NONDISCRIMINATION IN THE OUTER CONTINENTAL SHELF § 570.7 Remedies. In addition to the penalties available under 30 CFR part 550, subpart N...

  3. 30 CFR 570.7 - Remedies.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 2 2013-07-01 2013-07-01 false Remedies. 570.7 Section 570.7 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, DEPARTMENT OF THE INTERIOR OFFSHORE NONDISCRIMINATION IN THE OUTER CONTINENTAL SHELF § 570.7 Remedies. In addition to the penalties available under 30 CFR part 550, subpart N...

  4. 30 CFR 570.7 - Remedies.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 2 2014-07-01 2014-07-01 false Remedies. 570.7 Section 570.7 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, DEPARTMENT OF THE INTERIOR OFFSHORE NONDISCRIMINATION IN THE OUTER CONTINENTAL SHELF § 570.7 Remedies. In addition to the penalties available under 30 CFR part 550, subpart N...

  5. Remedial Testing and Placement in Community Colleges

    ERIC Educational Resources Information Center

    Horn, Catherine; McCoy, Zoe; Campbell, Lea; Brock, Cheryl

    2009-01-01

    Almost half of students who enter college require some sort of remedial coursework. Further, states are increasingly moving the responsibility of postsecondary remediation away from four-year campuses to two-year institutions. Scholars and policymakers have grappled with best practice for successfully filling in academic gaps and moving students…

  6. Greener and sustainable remediation using iron nanomaterials

    EPA Science Inventory

    The main goal of remediation is to protect humans and the environment. Unfortunately, many remedial actions in the past concentrated more on site-specific environmental risks and conditions completely ignoring external social and economic impacts. Thus, new approach called green ...

  7. 14 CFR 1212.800 - Civil remedies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Civil remedies. 1212.800 Section 1212.800... Comply With Requirements of This Part § 1212.800 Civil remedies. Failure to comply with the requirements of the Privacy Act and this part could subject NASA to civil suit under the provisions of 5...

  8. 32 CFR 310.47 - Civil remedies.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 2 2013-07-01 2013-07-01 false Civil remedies. 310.47 Section 310.47 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) PRIVACY PROGRAM DOD PRIVACY PROGRAM Privacy Act Violations § 310.47 Civil remedies. In addition to specific...

  9. 32 CFR 310.47 - Civil remedies.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 2 2011-07-01 2011-07-01 false Civil remedies. 310.47 Section 310.47 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) PRIVACY PROGRAM DOD PRIVACY PROGRAM Privacy Act Violations § 310.47 Civil remedies. In addition to specific...

  10. 10 CFR 1008.15 - Civil remedies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Civil remedies. 1008.15 Section 1008.15 Energy DEPARTMENT OF ENERGY (GENERAL PROVISIONS) RECORDS MAINTAINED ON INDIVIDUALS (PRIVACY ACT) Requests for Access or Amendment § 1008.15 Civil remedies. Subsection (g) of the Act provides that an individual may bring...

  11. 10 CFR 1008.15 - Civil remedies.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 4 2014-01-01 2014-01-01 false Civil remedies. 1008.15 Section 1008.15 Energy DEPARTMENT OF ENERGY (GENERAL PROVISIONS) RECORDS MAINTAINED ON INDIVIDUALS (PRIVACY ACT) Requests for Access or Amendment § 1008.15 Civil remedies. Subsection (g) of the Act provides that an individual may bring...

  12. 14 CFR 1212.800 - Civil remedies.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 5 2013-01-01 2013-01-01 false Civil remedies. 1212.800 Section 1212.800... Comply With Requirements of This Part § 1212.800 Civil remedies. Failure to comply with the requirements of the Privacy Act and this part could subject NASA to civil suit under the provisions of 5...

  13. 14 CFR 1212.800 - Civil remedies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 5 2012-01-01 2012-01-01 false Civil remedies. 1212.800 Section 1212.800... Comply With Requirements of This Part § 1212.800 Civil remedies. Failure to comply with the requirements of the Privacy Act and this part could subject NASA to civil suit under the provisions of 5...

  14. 32 CFR 310.47 - Civil remedies.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 2 2014-07-01 2014-07-01 false Civil remedies. 310.47 Section 310.47 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) PRIVACY PROGRAM DOD PRIVACY PROGRAM Privacy Act Violations § 310.47 Civil remedies. In addition to specific...

  15. 32 CFR 310.47 - Civil remedies.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 2 2012-07-01 2012-07-01 false Civil remedies. 310.47 Section 310.47 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) PRIVACY PROGRAM DOD PRIVACY PROGRAM Privacy Act Violations § 310.47 Civil remedies. In addition to specific...

  16. 10 CFR 1008.15 - Civil remedies.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 4 2011-01-01 2011-01-01 false Civil remedies. 1008.15 Section 1008.15 Energy DEPARTMENT OF ENERGY (GENERAL PROVISIONS) RECORDS MAINTAINED ON INDIVIDUALS (PRIVACY ACT) Requests for Access or Amendment § 1008.15 Civil remedies. Subsection (g) of the Act provides that an individual may bring...

  17. 14 CFR 1212.800 - Civil remedies.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 5 2011-01-01 2010-01-01 true Civil remedies. 1212.800 Section 1212.800... Comply With Requirements of This Part § 1212.800 Civil remedies. Failure to comply with the requirements of the Privacy Act and this part could subject NASA to civil suit under the provisions of 5...

  18. 32 CFR 310.47 - Civil remedies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Civil remedies. 310.47 Section 310.47 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) PRIVACY PROGRAM DOD PRIVACY PROGRAM Privacy Act Violations § 310.47 Civil remedies. In addition to specific...

  19. 10 CFR 1008.15 - Civil remedies.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 4 2013-01-01 2013-01-01 false Civil remedies. 1008.15 Section 1008.15 Energy DEPARTMENT OF ENERGY (GENERAL PROVISIONS) RECORDS MAINTAINED ON INDIVIDUALS (PRIVACY ACT) Requests for Access or Amendment § 1008.15 Civil remedies. Subsection (g) of the Act provides that an individual may bring...

  20. 10 CFR 1008.15 - Civil remedies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 4 2012-01-01 2012-01-01 false Civil remedies. 1008.15 Section 1008.15 Energy DEPARTMENT OF ENERGY (GENERAL PROVISIONS) RECORDS MAINTAINED ON INDIVIDUALS (PRIVACY ACT) Requests for Access or Amendment § 1008.15 Civil remedies. Subsection (g) of the Act provides that an individual may bring...

  1. Autonomy and Motivation in Remedial Mathematics

    ERIC Educational Resources Information Center

    George, Michael

    2012-01-01

    Research has shown that a significant majority of students in remedial mathematics do not remediate successfully. Such widespread failure raises the question of motivation. Some would argue that the instructor should directly compel students to commit themselves to the course and its work. This can be done by mandating attendance and/or by…

  2. 7 CFR 7.17 - Remedial measures.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 1 2013-01-01 2013-01-01 false Remedial measures. 7.17 Section 7.17 Agriculture Office of the Secretary of Agriculture SELECTION AND FUNCTIONS OF FARM SERVICE AGENCY STATE AND COUNTY COMMITTEES § 7.17 Remedial measures. (a) FSA will consider additional efforts to achieve the objective that...

  3. 7 CFR 7.17 - Remedial measures.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 1 2014-01-01 2014-01-01 false Remedial measures. 7.17 Section 7.17 Agriculture Office of the Secretary of Agriculture SELECTION AND FUNCTIONS OF FARM SERVICE AGENCY STATE AND COUNTY COMMITTEES § 7.17 Remedial measures. (a) FSA will consider additional efforts to achieve the objective that...

  4. Remedial Online Teaching on a Summer Course

    ERIC Educational Resources Information Center

    Rienties, Bart; Tempelaar, Dirk; Waterval, Dominique; Rehm, Martin; Gijselaers, Wim

    2006-01-01

    This paper is based on experiences with remedial online learning from a national collaboration initiative in the Netherlands involving the University of Amsterdam, Erasmus Rotterdam University and Maastricht University (www.web-spijkeren.nl). The central question is how prior knowledge tests and online remedial summer courses can contribute to…

  5. 22 CFR 213.4 - Other remedies.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Other remedies. 213.4 Section 213.4 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT CLAIMS COLLECTION General § 213.4 Other remedies. (a) This part does not supersede or require omission or duplication of administrative proceedings required...

  6. Urban Blight or Urban Hope?

    ERIC Educational Resources Information Center

    Enderle, Jerry

    2002-01-01

    Discusses ways urban communities can improve neglected educational facilities, including converting existing commercial buildings into "new paradigm" schools and breaking large schools into small, specialized academies. (EV)

  7. Recovery of energetically overexploited urban aquifers using surface water

    NASA Astrophysics Data System (ADS)

    García-Gil, Alejandro; Vázquez-Suñé, Enric; Sánchez-Navarro, José Ángel; Mateo Lázaro, Jesús

    2015-12-01

    Shallow aquifers have an important role in reducing greenhouse gases through helping manage the temperature of urban environments. Nevertheless, the uncontrolled rapid use of shallow groundwater resources to heat or cool urban environments can cause thermal pollution that will limit the long term sustainability of the resource. Therefore, there is a need for appropriate mitigation/remediation strategies capable of recovering energetically overexploited aquifers. In this work, a novel remediation strategy based on surface water recharge into aquifers is presented. To evaluate the capabilities of such measures for effective remediation, this strategy is optimized for a management problem raised in the overheated "Urban Alluvial Aquifer of Zaragoza" (Spain). The application of a transient groundwater flow and heat transport model under 512 different mitigation scenarios has enabled to quantify and discuss the magnitude of the remediation effect as a respond to injection rates of surface water, seasonal schedule of the injection and location of injection. The quantification of the relationship between these variables together with the evaluation of the amount of surface water injected per year in each scenario proposed have provided a better understanding of the system processes and an optimal management alternative. This work also makes awareness of the magnitude of the remediation procedure which is in an order of magnitude of tenths of years.

  8. Groundwater remediation: the next 30 years.

    PubMed

    Hadley, Paul W; Newell, Charles J

    2012-01-01

    Groundwater remediation technologies are designed, installed, and operated based on the conceptual models of contaminant hydrogeology that are accepted at that time. However, conceptual models of remediation can change as new research, new technologies, and new performance data become available. Over the past few years, results from multiple-site remediation performance studies have shown that achieving drinking water standards (i.e., Maximum Contaminant Levels, MCLs) at contaminated groundwater sites is very difficult. Recent groundwater research has shown that the process of matrix diffusion is one key constraint. New developments, such as mass discharge, orders of magnitude (OoMs), and SMART objectives are now being discussed more frequently by the groundwater remediation community. In this paper, the authors provide their perspectives on the existing "reach MCLs" approach that has historically guided groundwater remediation projects, and advocate a new approach built around the concepts of OoMs and mass discharge.

  9. Site remediation techniques in India: a review

    SciTech Connect

    Anomitra Banerjee; Miller Jothi

    2013-07-01

    India is one of the developing countries operating site remediation techniques for the entire nuclear fuel cycle waste for the last three decades. In this paper we intend to provide an overview of remediation methods currently utilized at various hazardous waste sites in India, their advantages and disadvantages. Over the years the site remediation techniques have been well characterized and different processes for treatment, conditioning and disposal are being practiced. Remediation Methods categorized as biological, chemical or physical are summarized for contaminated soils and environmental waters. This paper covers the site remediation techniques implemented for treatment and conditioning of wastelands arising from the operation of nuclear power plant, research reactors and fuel reprocessing units. (authors)

  10. Urban Resources.

    ERIC Educational Resources Information Center

    Novak, Kathy

    Designed as a resource for urban adult basic education (ABE) program planners, this guidebook describes model linkage strategies between ABE and job placement as well as ABE and job training services that are targeted to urban Americans. The following topics are covered in the guide: linkage strategies (the meaning of the term linkages, community…

  11. Urban Renewal.

    ERIC Educational Resources Information Center

    Johnston, Robert C.

    2001-01-01

    Discusses the court-ordered, multibillion-dollar infusion of funds to New Jersey cities for improving their school facilities and whether these additional funds will cause an urban renaissance. Some examples of New Jersey urban school facility needs are highlighted. (GR)

  12. Urban Forests

    Treesearch

    David Nowak

    2016-01-01

    Urban forests (and trees) constitute the second forest resource considered in this report. We specifically emphasize the fact that agricultural and urban forests exist on a continuum defined by their relationship (and interrelationship) with a given landscape. These two forest types generally serve different purposes, however. Whereas agricultural forests are...

  13. Urban Renewal.

    ERIC Educational Resources Information Center

    Johnston, Robert C.

    2001-01-01

    Discusses the court-ordered, multibillion-dollar infusion of funds to New Jersey cities for improving their school facilities and whether these additional funds will cause an urban renaissance. Some examples of New Jersey urban school facility needs are highlighted. (GR)

  14. Mold remediation in a hospital.

    PubMed

    Lee, Tang G

    2009-01-01

    As occupants in a hospital, patients are susceptible to air contaminants that can include biological agents dispersed throughout the premise. An exposed patient can become ill and require medical intervention. A consideration for patients is that they may have become environmentally sensitive and require placement in an environment that does not compromise their health. Unfortunately, the hospital environment often contains more biological substances than can be expected in an office or home environment. When a hospital also experiences water intrusion such as flooding or water leaks, resulting mold growth can seriously compromise the health of patients and others such as nursing staff and physicians (Burge, Indoor Air and Infectious Disease. Occupational Medicine: State of the Art Reviews, 1980; Lutz et al., Clinical Infectious Diseases 37: 786-793, 2003). Micro-organism growth can propagate if the water is not addressed quickly and effectively. Immunocompromised patients are particularly at risk when subjected to fungal infection such that the US Center for Disease Control issued guideline for building mold in health care facilities (Centers for Disease and Control [CDC], Centers for Disease and Control: Questions and Answers on Stachybotrys chartarum and Other Molds, 2000). This paper is based on mold remediation of one portion of a hospital unit due to water from construction activity and inadequate maintenance, resulting in mold growth. A large proportion of the hospital staff, primarily nurses in the dialysis unit, exhibited health symptoms consistent with mold exposure. Unfortunately, the hospital administrators did not consider the mold risk to be serious and refused an independent consultant retained by the nurse's union to examine the premise (Canadian Broadcasting Corporation [CBC], Nurses file complaints over mold at Foothills. Canadian Broadcasting Corporation, 2003). The nurse's union managed to have the premise examined by submitting a court order of

  15. Biological Remediation of Petroleum Contaminants

    NASA Astrophysics Data System (ADS)

    Kuhad, Ramesh Chander; Gupta, Rishi

    Large volumes of hazardous wastes are generated in the form of oily sludges and contaminated soils during crude oil transportation and processing. Although many physical, chemical and biological treatment technologies are available for petroleum contaminants petroleum contaminants in soil, biological methods have been considered the most cost-effective. Practical biological remediation methods typically involve direct use of the microbes naturally occurring in the contaminated environment and/or cultured indigenous or modified microorganisms. Environmental and nutritional factors, including the properties of the soil, the chemical structure of the hydrocarbon(s), oxygen, water, nutrient availability, pH, temperature, and contaminant bioavailability, can significantly affect the rate and the extent of hydrocarbon biodegradation hydrocarbon biodegradation by microorganisms in contaminated soils. This chapter concisely discusses the major aspects of bioremediation of petroleum contaminants.

  16. Assessment and remedial clinical education of surgeons in California.

    PubMed

    Cosman, Bard C; Alverson, Aaron D; Boal, Peter A; Owens, Erik L; Norcross, William A

    2011-12-01

    Assessment and remedial clinical education of practicing surgeons is feasible and possibly beneficial. Retrospective series. Urban academic medical center. Licensed surgeons. Structured assessment and remedial clinical education based on resident-education models. Assessment and clinical education results. Forty-seven general, general/vascular, and colorectal surgeons were assessed by the University of California, San Diego, Physician Assessment and Clinical Education program in 2000 to 2010. Forty-six (98%) were male (mean [SD] age, 54 [11] years; range, 34-80 years). Thirty-three (70%) came from state medical board actions: 25 from California's disciplinary division, 2 from California's licensing division, 3 from other state boards, and 3 self-referred during other state board actions. Fourteen (30%) came from health care organizations: 8 from California hospitals, 3 from hospitals in other states, 2 self-referred during hospital proceedings, and 1 self-referred during a medical group investigation. Twenty-three (49%) underwent a 2-day assessment only, including a 1-hour mock oral board examination: 8 "passed" with no recommendations; 6, with minor recommendations; 6 had major recommendations; and 3 "failed." Twenty-four surgeons (51%) also completed 26 five-day clinical education programs, with 20 "passes," 1 minor recommendation, 3 major recommendations, and 2 "fails." A program of assessment and remedial clinical education of surgeons designed to meet the needs of one medical board is being used by nongovernmental organizations as well, and it seems to meet the needs of some individual surgeons. This type of program may play a role in the profession's self-regulation.

  17. Space Debris Environment Remediation Concepts

    NASA Technical Reports Server (NTRS)

    Johnson, Nicholas L.; Klinkrad, Heiner

    2009-01-01

    Long-term projections of the space debris environment indicate that even drastic measures, such as an immediate, complete halt of launch and release activities, will not result in a stable environment of man-made space objects. Collision events between already existing space hardware will within a few decades start to dominate the debris population, and result in a net increase of the space debris population, also in size regimes which may cause further catastrophic collisions. Such a collisional cascading will ultimately lead to a run-away situation ("Kessler syndrome"), with no further possibility of human intervention. The International Academy of Astronautics (IAA) has been investigating the status and the stability of the space debris environment in several studies by first looking into space traffic management possibilities and then investigating means of mitigating the creation of space debris. In an ongoing activity, an IAA study group looks at ways of active space debris environment remediation. In contrast to the former mitigation study, the current activity concentrates on the active removal of small and large objects, such as defunct spacecraft, orbital stages, and mission-related objects, which serve as a latent mass reservoir that fuels initial catastrophic collisions and later collisional cascading. The paper will outline different mass removal concepts, e.g. based on directed energy, tethers (momentum exchange or electrodynamic), aerodynamic drag augmentation, solar sails, auxiliary propulsion units, retarding surfaces, or on-orbit capture. Apart from physical principles of the proposed concepts, their applicability to different orbital regimes, and their effectiveness concerning mass removal efficiency will be analyzed. The IAA activity on space debris environment remediation is a truly international project which involves more than 23 contributing authors from 9 different nations.

  18. Novel sorbents for environmental remediation

    NASA Astrophysics Data System (ADS)

    Manariotis, Ioannis D.; Karapanagioti, Hrissi K.; Werner, David

    2014-05-01

    Nowadays, one of the major environmental problems is the pollution of aquatic systems and soil by persistent pollutants. Persistent pollutants have been found widespread in sediments, surface waters, and drinking water supplies. The removal of pollutants can be accomplished prior to their discharge to receiving bodies or by immobilizing them onto soil. Sorption is the most commonly applied process, and activated carbons have been widely used. Rapid progress in nanotechnology and a new focus on biomass-based instead of non-renewable starting materials have produced a wide range of novel engineered sorbents including biosorbents, biochars, carbon-based nanoparticles, bio-nano hybrid materials, and iron-impregnated activated carbons. Sorbent materials have been used in environmental remediation processes and especially in agricultural soil, sediments and contaminated soil, water treatment, and industrial wastewater treatment. Furthermore, sorbents may enhance the synergistic action of other processes, such as volatilization and biodegradation. Novel sorbents have been employed for the removal or immobilization of persistent pollutants such as and include heavy metals (As, Cr, Cu, Pb, Cd, and Hg), halogenated organic compounds, endocrine disrupting chemicals, metalloids and non-metallic elements, and other organic pollutants. The development and evaluation of novel sorbents requires a multidisciplinary approach encompassing environmental, nanotechnology, physical, analytical, and surface chemistry. The necessary evaluations encompass not only the efficiency of these materials to remove pollutants from surface waters and groundwater, industrial wastewater, polluted soils and sediments, etc., but also the potential side-effects of their environmental applications. The aim of this work is to present the results of the use of biochar and impregnated carbon sorbents for the removal of organic pollutants and metals. Furthermore, the new findings from the forthcoming session

  19. Innovative vitrification for soil remediation

    SciTech Connect

    Jetta, N.W.; Patten, J.S.; Hart, J.G.

    1995-12-01

    The objective of this DOE demonstration program is to validate the performance and operation of the Vortec Cyclone Melting System (CMS{trademark}) for the processing of LLW contaminated soils found at DOE sites. This DOE vitrification demonstration project has successfully progressed through the first two phases. Phase 1 consisted of pilot scale testing with surrogate wastes and the conceptual design of a process plant operating at a generic DOE site. The objective of Phase 2, which is scheduled to be completed the end of FY 95, is to develop a definitive process plant design for the treatment of wastes at a specific DOE facility. During Phase 2, a site specific design was developed for the processing of LLW soils and muds containing TSCA organics and RCRA metal contaminants. Phase 3 will consist of a full scale demonstration at the DOE gaseous diffusion plant located in Paducah, KY. Several DOE sites were evaluated for potential application of the technology. Paducah was selected for the demonstration program because of their urgent waste remediation needs as well as their strong management and cost sharing financial support for the project. During Phase 2, the basic nitrification process design was modified to meet the specific needs of the new waste streams available at Paducah. The system design developed for Paducah has significantly enhanced the processing capabilities of the Vortec vitrification process. The overall system design now includes the capability to shred entire drums and drum packs containing mud, concrete, plastics and PCB`s as well as bulk waste materials. This enhanced processing capability will substantially expand the total DOE waste remediation applications of the technology.

  20. Operable Unit 3-14, Tank Farm Soil and INTEC Groundwater Remedial Design/Remedial Action Scope of Work

    SciTech Connect

    D. E. Shanklin

    2007-07-25

    This Remedial Design/Remedial Action (RD/RA) Scope of Work pertains to OU 3-14 Idaho Nuclear Technology and Engineering Center and the Idaho National Laboratory and identifies the remediation strategy, project scope, schedule, and budget that implement the tank farm soil and groundwater remediation, in accordance with the May 2007 Record of Decision. Specifically, this RD/RA Scope of Work identifies and defines the remedial action approach and the plan for preparing the remedial design documents.

  1. A weight of evidence approach for assessing remediation of ...

    EPA Pesticide Factsheets

    The Ottawa River lies in extreme northwest Ohio, flowing into Lake Erie’s western basin at the city of Toledo. The Ottawa River is a component of the Maumee River Area of Concern (AOC) as defined by the International Joint Commission. In 2009-2010 a sediment remediation project took place in the lower 8.8 miles of the river where urban and industrial activities impacted the river as a beneficial resource. Sediment was removed at designated locations based on a surface weighted average concentration model where PCB and PAH levels exceeded targeted levels. This presentation will focus on three biological tools: assessing response of tissue concentrations of PCBs and PAHs, DNA damage in Brown Bullhead and macroinvertebrate biotic condition as measured by Ohio EPA Lacustrine Index of Community Integrity (LICI). From 2009-2013 and again in 2015, pre- and post-remedy sampling of fishes representative of different trophic levels was conducted via electroshocking and fyke net sampling. The study area was divided into 3 river reaches (reaches 2, 3, & 4 numbered from down- to upstream). Fish were collected by electro-shocking or fyke netting across an entire reach where Largemouth Bass, Brown Bullhead, White Sucker, Pumpkinseed, Gizzard Shad, Bluntnose Minnow and Emerald Shiner. Blood samples were collected from 10 Brown Bullheads from each reach and processed in the field and laboratory using Comet Assay methods.Two different configurations of multiplate samplers (Hest

  2. Use of folk remedies in a Hispanic population.

    PubMed

    Risser, A L; Mazur, L J

    1995-09-01

    To identify the types of home remedies used for common pediatric problems in a Hispanic population and to study traditional folk illnesses and their cures. Survey of 51 Hispanic caregivers, mostly mothers. A pediatric primary care facility in an urban Hispanic neighborhood in Houston, Tex. Remedies used for common pediatric illnesses and for the traditional folk illnesses: mal ojo (evil eye), empacho (blocked intestine), mollera caida (fallen fontanelle), and susto (fright). A combination of herbs and pharmaceuticals was used for many illnesses. Teas were most commonly used for colic, upper respiratory tract symptoms, and abdominal pain. Pharmaceuticals were most commonly used for upper respiratory tract symptoms, fever, and diarrhea. Belief in folk illnesses was common: 36 (70%) had experience with mal ojo, 33 (64%) with empacho, 27 (52%) with mollera caida, and 19 (37%) with susto; 10 (20%) had taken their children to curanderos (traditional healers) for treatment of folk illnesses. Cultural health beliefs were widely maintained in this Hispanic population. Many patients integrated cultural health practices with reliance on medical practitioners. Knowledge and acknowledgement of these practices are important for physician-patient communication and may affect compliance with other medical procedures and treatments.

  3. A weight of evidence approach for assessing remediation of ...

    EPA Pesticide Factsheets

    The Ottawa River lies in extreme northwest Ohio, flowing into Lake Erie’s western basin at the city of Toledo. The Ottawa River is a component of the Maumee River Area of Concern (AOC) as defined by the International Joint Commission. In 2009-2010 a sediment remediation project took place in the lower 8.8 miles of the river where urban and industrial activities impacted the river as a beneficial resource. Sediment was removed at designated locations based on a surface weighted average concentration model where PCB and PAH levels exceeded targeted levels. This presentation will focus on three biological tools: assessing response of tissue concentrations of PCBs and PAHs, DNA damage in Brown Bullhead and macroinvertebrate biotic condition as measured by Ohio EPA Lacustrine Index of Community Integrity (LICI). From 2009-2013 and again in 2015, pre- and post-remedy sampling of fishes representative of different trophic levels was conducted via electroshocking and fyke net sampling. The study area was divided into 3 river reaches (reaches 2, 3, & 4 numbered from down- to upstream). Fish were collected by electro-shocking or fyke netting across an entire reach where Largemouth Bass, Brown Bullhead, White Sucker, Pumpkinseed, Gizzard Shad, Bluntnose Minnow and Emerald Shiner. Blood samples were collected from 10 Brown Bullheads from each reach and processed in the field and laboratory using Comet Assay methods.Two different configurations of multiplate samplers (Hest

  4. CAI and At-Risk Minority Urban High School Students.

    ERIC Educational Resources Information Center

    Signer, Barbara R.

    1991-01-01

    The Microcomputer Adaptive Testing High-Risk-Urban Students (MATH-R-US) project made computerized assessment an integral part of remedial high school mathematics at an inner-city school with predominantly African-American students. Results suggest that the girls exhibited greater self-esteem toward using computers than did boys and that…

  5. Benthic macroinvertebrate assemblages in remediated wetlands around Sydney, Australia.

    PubMed

    Rawson, Christopher A; Lim, Richard P; Tremblay, Louis A; Warne, Michael St J; Ying, Guang-Guo; Laginestra, Edwina; Chapman, John C

    2010-11-01

    To investigate potential high organisational level impacts of persistent organic pollution in the wetlands in the Sydney Olympic Park (SOP) remediated site, the benthic macroinvertebrate assemblages of seven wetlands within SOP and two off-site reference wetlands were examined. Sediment cores were collected, stained and preserved from each study site and the macroinvertebrates identified to the appropriate taxonomic level (Class, Order, Family, Subfamily). Data were analysed for taxon richness and macroinvertebrate abundance and multivariate techniques were used to identify chemical/physical characteristics of the sediment, which were important influences on the differences in the assemblage between study sites. Macroinvertebrate abundance was highly variable between study sites and taxon richness was low across all sites. Oligochaetes, nematodes, ostracods and chironomids were the most common taxa found and were the most important in influencing differences between the macroinvertebrate assemblages among the study sites. Sediment grain size and chemical characteristics of the sediments (ΣPAH, ΣPCB, TCDDeq and heavy metal concentrations) were important in separating the study sites based on taxon richness and abundance. Canonical correspondence analysis separated the macroinvertebrate assemblages at newly two created wetlands from those at other study sites including the urban reference sites. Increased sediment POP contamination (particularly as measured TCDDeq and ΣDDT concentrations) is a likely contributor in excluding pollution sensitive taxa and, therefore, alterations to benthic macroinvertebrate assemblages. Further, the influence of TOC suggests the significance of catchment inputs in contributing to changes in macroinvertebrate assemblage. The SOP remediation led to the establishment of wetlands with benthic communities representative of those expected in urban wetlands.

  6. Enhanced Remedial Amendment Delivery to Low Permeability Zones in Subsurface Remediation

    NASA Astrophysics Data System (ADS)

    Zhong, L.; Oostrom, M.; Wietsma, T.; Cantrell, K.

    2006-12-01

    Heterogeneity is often encountered in subsurface contamination characterization and remediation. Low- permeability zones are typically bypassed when remedial fluids are injected into subsurface heterogeneous aquifer systems. Therefore, contaminants in the bypassed areas may not be contacted by the amendments in the remedial fluid, which may significantly prolong the remediation operations. An experimental and numerical study has been completed to demonstrate the capability of Mobility-Controlled Flood (MCF) technology to enhance the remedial amendments delivery to the lower permeability zones. This technology, developed in the petroleum industry, has been demonstrated to significantly improve the sweeping efficiency in heterogeneous petroleum reservoirs. Xanthan gum, a water-soluble bio-polymer, was used to modify the viscosity of the amendment-added remedial solutions. Surfactants and (poly)phosphate were the remedial amendments for non-aqueous phase liquid (NAPL) and uranium remediation, respectively. Batch and column experiments were conducted to select the polymer-amendment solutions. The enhanced delivery of the remedial solutions was demonstrated in two- dimensional (2-D) flow cell experiments, packed with heterogeneous systems, as a function of polymer concentration and injection flow rate. The STOMP (Subsurface Transport Over Multiple Phases) simulator was modified to include polymer-induced shear thinning effects. The results clearly show that the MCF technology is capable of enhancing the delivery of remedial amendments to subsurface lower permeability zones. The enhanced delivery significantly improved the NAPL removal from these zones and the sweeping efficiency on a heterogeneous system was remarkably increased when a polymer fluid was applied. MCF technology is also able to stabilize the fluid displacing front when there is a density difference between the fluids. The modified STOMP simulator was able to predict the experimental observed fluid

  7. Praying for Change: The Ignatian Examen in the "Remedial" Classroom

    ERIC Educational Resources Information Center

    Boehner, Joel

    2012-01-01

    Contradictions abound in remedial higher education. While 40% of American undergraduate students take remedial coursework (Attewell et al., 2006), remediation represents just one percent of the national higher education budget (Handel & Williams, 2011). Furthermore, the status quo in remedial teaching and learning in American higher education…

  8. Simulation of surfactant-enhanced aquifer remediation

    NASA Astrophysics Data System (ADS)

    Brown, Chris L.; Pope, Gary A.; Abriola, Linda M.; Sepehrnoori, Kamy

    1994-11-01

    Surfactant-enhanced aquifer remediation (SEAR) is currently under active investigation as one of the most promising alternatives to conventional pump-and-treat remediation for aquifers contaminated by dense nonaqueous phase organic liquids. An existing three-dimensional finite-difference enhanced oil recovery simulator is adapted to model the SEAR process. This simulator incorporates the complex chemistry and multiphase transport behavior of surfactant/water/organic mixtures in permeable media. Model governing equations and parameter requirements are discussed, and simulations are employed to illustrate some important issues potentially affecting SEAR performance at the field scale. Simulations suggest that the total time for remediation could be reduced by more than an order of magnitude over conventional remediation approaches by employing SEAR. The assumptions, approximations, and conditions required to achieve such a favorable result are identified, and the importance of modeling as a quantitative tool for the assessment of SEAR is highlighted.

  9. Nanotechnology for Site Remediation: Fact Sheet

    EPA Pesticide Factsheets

    This fact sheet presents a snapshot of nanotechnology and its current uses in remediation. It presents information to help site project managers understand the potential applications of this group of technologies at their sites.

  10. List of Contractors to Support Anthrax Remediation

    SciTech Connect

    Judd, Kathleen S.; Lesperance, Ann M.

    2010-05-14

    This document responds to a need identified by private sector businesses for information on contractors that may be qualified to support building remediation efforts following a wide-area anthrax release.

  11. Coughs and Colds: Medicines or Home Remedies?

    MedlinePlus

    ... Issues Listen Español Text Size Email Print Share Coughs and Colds: Medicines or Home Remedies? Page Content Article Body ​Medicines Over-the-counter (OTC) cough and cold medicines can cause serious side effects ...

  12. 43 CFR 4770.3 - Administrative remedies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... adopters to protect the animals' welfare. (c) Notwithstanding the provisions of paragraph (a) of § 4.21 of... FREE-ROAMING HORSES AND BURROS Prohibited Acts, Administrative Remedies, and Penalties § 4770.3...

  13. Green Remediation Best Management Practices: Mining Sites

    EPA Pesticide Factsheets

    This fact sheet describes best management practices (BMPs) that can be used to reduce the environmental footprint of cleanup activities associated with common project components, cleanup phases, and implementation of remediation technologies.

  14. PERMEABLE REACTIVE BARRIERS FOR GROUNDWATER REMEDIATION

    EPA Science Inventory

    Permeable reactive barriers (PRB's) are an emerging, alternative in-situ approach for remediating groundwater contamination that combine subsurface fluid flow management with a passive chemical treatment zone. Removal of contaminants from the groundwater plume is achieved by alt...

  15. PERMEABLE REACTIVE BARRIERS FOR GROUND WATER REMEDIATION

    EPA Science Inventory

    Permeable reactive barriers (PRB's) are an emerging, alternative in-situ approach for remediating groundwater contamination that combine subsurface fluid flow management with a passive chemical treatment zone. Removal of contaminants from the groundwater plume is achieved by alt...

  16. Libra: An Interdisciplinary Approach to Remediation

    ERIC Educational Resources Information Center

    Fisher, Dexter; Lamdin, Lois

    1974-01-01

    Describes a program at a community college in Bronx, New York in which English instructors and content area teachers work together to improve the writing of students needing remedial instruction. (RB)

  17. Remediation Evaluation Model for Chlorinated Solvents (REMChlor)

    EPA Science Inventory

    A new analytical solution has been developed for simulating the transient effects of groundwater source and plume remediation. This development was performed as part of a Strategic Environmental Research and Development Program (SERDP) research project, which was a joint effort ...

  18. REAL TIME DATA FOR REMEDIATION ACTIVITIES [11505

    SciTech Connect

    BROCK CT

    2011-01-13

    Health physicists from the CH2M HILL Plateau Remediation Company collaborated with Berkeley Nucleonics Corporation to modify the SAM 940 isotope identifier instrument to be used for nuclear waste remediation. These modifications coupled with existing capabilities of the SAM 940 have proven to be invaluable during remediation activities, reducing disposal costs by allowing swift remediation of targeted areas that have been identified as having isotopes of concern (IOC), and eliminating multiple visits to sites by declaring an excavation site clear of IOCs before demobilizing from the site. These advantages are enabled by accumulating spectral data for specific isotopes that is nearly 100 percent free of false positives, which are filtered out in 'real time.'

  19. DNAPL Remediation: Selected Projects Approaching Regulatory Closure

    EPA Pesticide Factsheets

    This paper is a status update on the use of DNAPL source reduction remedial technologies, and provides information about recent projects where regulatory closure has been reached or projects are approaching regulatory closure, following source reduction.

  20. FIELD ASSESSMENT OF MULTIPLE DNAPL REMEDIATION TECHNIQUES

    EPA Science Inventory

    Five DNAPL remediation technologies were evaluated in constructed test cells at the Dover National Test Site, Dover AFB, Delaware. The technologies were cosolvent solubilization, cosolvent mobilization, surfactant solubilization, complex sugar flushing and air sparging/soil vapor...

  1. Herbal remedies and supplements for weight loss

    MedlinePlus

    ... dangerous. Before using an over-the-counter or herbal diet remedy, talk with your health care provider. Nearly all over-the-counter supplements with claims of weight-loss properties contain some ...

  2. Burnout--Is Alcohol a Remedy?

    ERIC Educational Resources Information Center

    Royce, James E.

    1982-01-01

    The remedy for school personnel who drink too much is not dismissal but an understanding examination of the problem and encouragement to get help under the rules that apply for sick leave and medical insurance coverage. (Author/MLF)

  3. Remediation Evaluation Model for Chlorinated Solvents (REMChlor)

    EPA Science Inventory

    A new analytical solution has been developed for simulating the transient effects of groundwater source and plume remediation. This development was performed as part of a Strategic Environmental Research and Development Program (SERDP) research project, which was a joint effort ...

  4. ELECTROKINETIC REMEDIATION: BASICS AND TECHNOLOGY STATUS

    EPA Science Inventory

    Electrokinetic remediation, variably named as electrochemical soil processing, electromigration, electrokinetic decontamination or electroreclamation uses electric currents to extract radionuclides, heavy metals, certain organic compounds, or mixed inorganic species and some orga...

  5. ELECTROKINETIC REMEDIATION: BASICS AND TECHNOLOGY STATUS

    EPA Science Inventory

    Electrokinetic remediation, variably named as electrochemical soil processing, electromigration, electrokinetic decontamination or electroreclamation uses electric currents to extract radionuclides, heavy metals, certain organic compounds, or mixed inorganic species and some orga...

  6. Libra: An Interdisciplinary Approach to Remediation

    ERIC Educational Resources Information Center

    Fisher, Dexter; Lamdin, Lois

    1974-01-01

    Describes a program at a community college in Bronx, New York in which English instructors and content area teachers work together to improve the writing of students needing remedial instruction. (RB)

  7. Innovative vitrification for soil remediation

    SciTech Connect

    Jetta, N.W.; Patten, J.S.; Hnat, J.G.

    1996-03-01

    The objective of this DOE demonstration program is to validate the performance and operation of the Vortec Cyclone Melting System (CMS{trademark}) for the processing of LLW contaminated soils found at DOE sites. This DOE vitrification demonstration project has successfully progressed through the first two phases. Phase 1 consisted of pilot scale testing with surrogate wastes and the conceptual design of a process plant operating at a generic DOE site. The objective of Phase 2, which is scheduled to be completed the end of FY 95, is to develop a definitive process plant design for the treatment of wastes at a specific DOE facility. During Phase 2, a site specific design was developed for the processing of LLW soils and muds containing TSCA organics and RCRA metal contaminants. Phase 3 will consist of a full scale demonstration at the DOE gaseous diffusion plant located in Paducah, KY. Several DOE sites were evaluated for potential application of the technology. Paducah was selected for the demonstration program because of their urgent waste remediation needs as well as their strong management and cost sharing financial support for the project.

  8. Innovative vitrification for soil remediation

    SciTech Connect

    Jetta, N.W.; Patten, J.S.; Hnat, J.G.

    1995-10-01

    The objective of this DOE demonstration program is to validate the performance and operation of the Vortec Cyclone Melting System (CMS{trademark}) for the processing of LLW contaminated soils found at DOE sites. This DOE vitrification demonstration project has successfully progressed through the first two phases. Phase I consisted of pilot scale testing with surrogate wastes and the conceptual design of a process plant operating at a generic DOE site. The objective of Phase 2, which is scheduled to be completed the end of FY 95, is to develop a definitive process plant design for the treatment of wastes at a specific DOE facility. During Phase 2, a site specific design was developed for the processing of LLW soils and muds containing TSCA organics and RCRA metal contaminants. Phase 3 will consist of a full scale demonstration at the DOE gaseous diffusion plant located in Paducah, KY. Several DOE sites were evaluated for potential application of the technology. Paducah was selected for the demonstration program because of their urgent waste remediation needs as well as their strong management and cost sharing financial support for the project.

  9. Operable Unit 3-13, Group 3, Other Surface Soils Remediation Sets 4-6 (Phase II) Remedial Design/Remedial Action Work Plan

    SciTech Connect

    D. E. Shanklin

    2006-06-01

    This Remedial Design/Remedial Action Work Plan provides the framework for defining the remedial design requirements, preparing the design documentation, and defining the remedial actions for Waste Area Group 3, Operable Unit 3-13, Group 3, Other Surface Soils, Remediation Sets 4-6 (Phase II) located at the Idaho Nuclear Technology and Engineering Center at the Idaho National Laboratory. This plan details the design developed to support the remediation and disposal activities selected in the Final Operable Unit 3-13, Record of Decision.

  10. Water as a Reagent for Soil Remediation

    SciTech Connect

    Jayaweera, Indira S.; Marti-Perez, Montserrat; Diaz-Ferrero, Jordi; Sanjurjo, Angel

    2003-03-06

    SRI International conducted experiments in a two-year, two-phase process to develop and evaluate hydrothermal extraction technology, also known as hot water extraction (HWE) technology, for remediating petroleum-contaminated soils. The bench-scale demonstration of the process has shown great promise, and the implementation of this technology will revolutionize the conventional use of water in soil remediation technologies and provide a standalone technology for removal of both volatile and heavy components from contaminated soil.

  11. Natural Remediation at Savannah River Site

    SciTech Connect

    Lewis, C. M.; Van Pelt, R.

    2002-02-25

    Natural remediation is a general term that includes any technology or strategy that takes advantage of natural processes to remediate a contaminated media to a condition that is protective of human health and the environment. Natural remediation techniques are often passive and minimally disruptive to the environment. They are generally implemented in conjunction with traditional remedial solutions for source control (i.e., capping, stabilization, removal, soil vapor extraction, etc.). Natural remediation techniques being employed at Savannah River Site (SRS) include enhanced bio-remediation, monitored natural attenuation, and phytoremediation. Enhanced bio-remediation involves making nutrients available and conditions favorable for microbial growth. With proper precautions and feeding, the naturally existing microbes flourish and consume the contaminants. Case studies of enhanced bio-remediation include surface soils contaminated with PCBs and pesticides, and Volatile Organic Compound (VOC) contamination in both the vadose zone and groundwater. Monitored natural attenuation (MNA) has been selected as the preferred alternative for groundwater clean up at several SRS waste units. Successful implementation of MNA has been based on demonstration that sources have been controlled, groundwater modeling that indicates that plumes will not expand or reach surface water discharge points at levels that exceed regulatory limits, and continued monitoring. Phytoremediation is being successfully utilized at several SRS waste units. Phytoremediation involves using plants and vegetation to uptake, break down, or manage contaminants in groundwater or soils. Case studies at SRS include managing groundwater plumes of tritium and VOCs with pine trees that are native to the area. Significant decreases in tritium discharge to a site stream have been realized in one phytoremediation project. Studies of other vegetation types, methods of application, and other target contaminants are

  12. Waste minimization applications at a remediation site

    SciTech Connect

    Allmon, L.A.

    1995-01-23

    The Fernald Environmental Management Project (FEMP) owned by the Department of Energy was used for the processing of uranium. In 1989 Fernald suspended production of uranium metals and was placed on the National Priorities List (NPL). The site`s mission has changed from one of production to environmental restoration. Many groups necessary for producing a product were deemed irrelevant for remediation work, including Waste Minimization. Waste Minimization does not readily appear to be applicable to remediation work. Environmental remediation is designed to correct adverse impacts to the environment from past operations and generates significant amounts of waste requiring management. The premise of pollution prevention is to avoid waste generation, thus remediation is in direct conflict with this premise. Although greater amounts of waste will be generated during environmental remediation, treatment capacities are not always available and disposal is becoming more difficult and costly. This creates the need for pollution prevention and waste minimization. Applying waste minimization principles at a remediation site is an enormous challenge. If the remediation site is also radiologically contaminated it is even a bigger challenge. Innovative techniques and ideas must be utilized to achieve reductions in the amount of waste that must be managed or dispositioned. At Fernald the waste minimization paradigm was shifted from focusing efforts on source reduction to focusing efforts on recycle/reuse by inverting the EPA waste management hierarchy. A fundamental difference at remediation sites is that source reduction has limited applicability to legacy wastes but can be applied successfully on secondary waste generation. The bulk of measurable waste reduction will be achieved by the recycle/reuse of primary wastes and by segregation and decontamination of secondary wastestreams. Each effort must be measured in terms of being economically and ecologically beneficial.

  13. New aspects of soil remediation technologies

    SciTech Connect

    Fels, H.; Becker, S.; Pietsch, R.

    1995-12-31

    In Germany soil remediation technologies are looking back to a development of 10 to 15 years. In the eighties ground examination standards and waste limits values have been defined which are forming the base of all remediation methods. Today the classical cleaning technologies like soil washing and activated coal adsorption just have reached their physical limits. Additional technical proceedings have to improve cleaning efficiency and decomposition of waste.

  14. Nuclear facility decommissioning and site remedial actions

    SciTech Connect

    Owen, P.T.; Knox, N.P.; Ferguson, S.D.; Fielden, J.M.; Schumann, P.L.

    1989-09-01

    The 576 abstracted references on nuclear facility decommissioning, uranium mill tailings management, and site remedial actions constitute the tenth in a series of reports prepared annually for the US Department of Energy's Remedial Action Programs. Citations to foreign and domestic literature of all types--technical reports, progress reports, journal articles, symposia proceedings, theses, books, patents, legislation, and research project descriptions--have been included. The bibliography contains scientific, technical, economic, regulatory, and legal information pertinent to the US Department of Energy's Remedial Action Programs. Major sections are (1) Surplus Facilities Management Program, (2) Nuclear Facilities Decommissioning, (3) Formerly Utilized Sites Remedial Action Program, (4) Facilities Contaminated with Naturally Occurring Radionuclides, (5) Uranium Mill Tailings Remedial Action Program, (6) Uranium Mill Tailings Management, (7) Technical Measurements Center, and (8) General Remedial Action Program Studies. Within these categories, references are arranged alphabetically by first author. Those references having no individual author are listed by corporate affiliation or by publication description. Indexes are provided for author, corporate affiliation, title work, publication description, geographic location, subject category, and keywords.

  15. California seeks new technologies for site remediation

    SciTech Connect

    Not Available

    1989-09-01

    Innovative new technologies for site remediation will be sought by the California Department of Health Services (Department), Toxic Substances Control Division, Alternative Technology Section, for assessment in the field as full-scale demonstration projects. The Remedial Technology Assessment Program (RTAP) fosters emerging technologies, which have been successfully tested in the laboratory, at bench scale, or at pilot scale and are ready for field or full-scale demonstration project testing. The Department will solicit interest from companies to conduct full-scale demonstrations of remedial treatment technologies for site remediation. The solicitation responses will be used to compile a list of treatment technologies which can be considered during the Remedial Action Plan (RAP) process for implementation at State-lead Bond Expenditure Plan sites and possibly responsible party sites. RTAP will attempt to match submitted remedial technologies to specific hazardous waste sites via the RAP process. A technical report, including an evaluation of the technical and economic feasibility, will be prepared after each demonstration project.

  16. Hazardous waste treatment and environmental remediation research

    SciTech Connect

    Not Available

    1989-09-29

    Los Alamos National Laboratory (LANL) is currently evaluating hazardous waste treatment and environmental remediation technologies in existence and under development to determine applicability to remediation needs of the DOE facilities under the Albuquerque Operations Office and to determine areas of research need. To assist LANL is this effort, Science Applications International Corporation (SAIC) conducted an assessment of technologies and monitoring methods that have been demonstrated or are under development. The focus of this assessment is to: (1) identify existing technologies for hazardous waste treatment and environmental remediation of old waste sites; (2) identify technologies under development and the status of the technology; (3) assess new technologies that need development to provide adequate hazardous waste treatment and remedial action technologies for DOD and DOE sites; and (4) identify hazardous waste and remediation problems for environmental research and development. There are currently numerous research and development activities underway nationwide relating to environmental contaminants and the remediation of waste sites. To perform this effort, SAIC evaluated current technologies and monitoring methods development programs in EPA, DOD, and DOE, as these are the primary agencies through which developmental methods are being demonstrated. This report presents this evaluation and provides recommendations as to pertinent research needs or activities to address waste site contamination problems. The review and assessment have been conducted at a programmatic level; site-specific and contaminant-specific evaluations are being performed by LANL staff as a separate, related activity.

  17. 77 FR 76072 - Notice of Extension to Public Comment Period for Remedial Design/Remedial Action Consent Decree...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-26

    ... of Extension to Public Comment Period for Remedial Design/ Remedial Action Consent Decree under the... Justice lodged a proposed Remedial Design/Remedial Action Consent Decree (``RD/RA Consent Decree'') with... West End Landfill and an Alabama Power Company substation, and to the south by and including the...

  18. Overview of Green and Sustainable Remediation for Soil and Groundwater Remediation - 12545

    SciTech Connect

    Simpkin, Thomas J.; Favara, Paul

    2012-07-01

    Making remediation efforts more 'sustainable' or 'green' is a topic of great interest in the remediation community. It has been spurred on by Executive Orders from the White House, as well as Department of Energy (DOE) sustainability plans. In private industry, it is motivated by corporate sustainability goals and corporate social responsibility. It has spawned new organizations, areas of discussion, tools and practices, and guidance documents around sustainable remediation or green remediation. Green remediation can be thought of as a subset of sustainable remediation and is mostly focused on reducing the environmental footprint of cleanup efforts. Sustainable remediation includes both social and economic considerations, in addition to environmental. Application of both green and sustainable remediation (GSR) may involve two primary activities. The first is to develop technologies and alternatives that are greener or more sustainable. This can also include making existing remediation approaches greener or more sustainable. The second is to include GSR criteria in the evaluation of remediation alternatives and strategies. In other words, to include these GSR criteria in the evaluation of alternatives in a feasibility study. In some cases, regulatory frameworks allow the flexibility to include GSR criteria into the evaluation process (e.g., state cleanup programs). In other cases, regulations allow less flexibility to include the evaluation of GSR criteria (e.g., Comprehensive Environmental Response Compensation, and Liability Act (CERCLA)). New regulatory guidance and tools will be required to include these criteria in typical feasibility studies. GSR provides a number of challenges for remediation professionals performing soil and groundwater remediation projects. Probably the most significant is just trying to stay on top of the ever changing landscape of products, tools, and guidance documents coming out of various groups, the US EPA, and states. However, this

  19. Effects of urbanization on groundwater evolution in an urbanizing watershed

    NASA Astrophysics Data System (ADS)

    Reyes, D.; Banner, J. L.; Bendik, N.

    2011-12-01

    The Jollyville Plateau Salamander (Eurycea tonkawae), a candidate species for listing under the Endangered Species Act, is endemic to springs and caves within the Bull Creek Watershed of Austin, Texas. Rapid urbanization endangers known populations of this salamander. Conservation strategies lack information on the extent of groundwater contamination from anthropogenic sources in this karst watershed. Spring water was analyzed for strontium (Sr) isotopes and major ions from sites classified as "urban" or "rural" based on impervious cover estimates. Previous studies have shown that the 87Sr/86Sr value of municipal water is significantly higher than values for natural streamwater, which are similar to those for the Cretaceous limestone bedrock of the region's watersheds. We investigate the application of this relationship to understanding the effects of urbanization on groundwater quality. The use of Sr isotopes as hydrochemical tracers is complemented by major ion concentrations, specifically the dominant ions in natural groundwater (Ca and HCO3) and the ions associated with the addition of wastewater (Na and Cl). To identify high priority salamander-inhabited springs for water quality remediation, we explore the processes controlling the chemical evolution of groundwater such as municipal water inputs, groundwater-soil interactions, and solution/dissolution reactions. 87Sr/86Sr values for water samples from within the watershed range from 0.70760 to 0.70875, the highest values corresponding to sites located in the urbanized areas of the watershed. Analyses of the covariation of Sr isotopes with major ion concentrations help elucidate controls on spring water evolution. Springs located in rural portions of the watershed have low 87Sr/86Sr, high concentrations of Ca and HCO3, and low concentrations of Na and Cl. This is consistent with small inputs of municipal water. Three springs located in urban portions of the watershed have high 87Sr/86Sr, low Ca and HCO3, and

  20. Space Debris Environent Remediation Concepts

    NASA Astrophysics Data System (ADS)

    Klinkrad, H.; Johnson, N. L.

    2009-03-01

    Long-term projections of the space debris environment indicate that even drastic measures, such as an immediate, complete halt of launch and release activities, will not result in a stable environment of man-made space objects. Collision events between already existing space hardware will within a few decades start to dominate the debris population, and result in a net increase of the space debris population, also at sizes which may cause further catastrophic collisions. A collisional cascading may ultimately lead to a run-away situation ("Kessler syndrome"), with no further possibility of human intervention.The International Academy of Astronautics (IAA) has been investigating the status and the stability of the space debris environment in several studies by first looking into space traffic management possibilities, and then investigating means of mitigating the creation of space debris. In an on-going activity, an IAA study group looks into methods of active space debris environment remediation. In contrast to the former mitigation study, the current activity concentrates on the active removal of large objects, such as defunct spacecraft, orbital stages, and mission-related objects, which serve as a latent mass reservoir that fuels initial castastrophic collisions and later collisional cascading. The paper will outline different mass removal concepts, e.g. based on directed energy, tethers (momentum exchange or electro-dynamic), aerodynamic drag augmentation, solar sails, auxiliary propulsion units, retarding surfaces, or on-orbit capture. Apart from physical principles of the proposed concepts, their applicability to different orbital regimes, and their effectiveness concerning mass removal efficiency will be discussed.

  1. Characteristics of Students in Traditional versus Alternative High Schools: A Cross-Sectional Analysis of Enrollment in One Urban District

    ERIC Educational Resources Information Center

    Perzigian, Aaron B.; Afacan, Kemal; Justin, Whitney; Wilkerson, Kimber L.

    2017-01-01

    Urban school districts are comprised of many diverse high school environments including comprehensive neighborhood schools as well as a variety of smaller alternative models that focus on innovative practices, behavior remediation, or academic recovery. In terms of enrollment distribution, urban school districts are increasingly offering…

  2. A Common Framework for Remedial Reporting: Response to Remedial Reporting Task Force Recommendations

    ERIC Educational Resources Information Center

    Gianneschi, Matt; Fulton, Mary

    2014-01-01

    In December 2013, the Education Commission of the States (ECS) convened a steering committee of state education policy leaders from throughout the nation to discuss the implications of the inconsistent remedial education reporting practices in the states. After the conversation, the Remedial Reporting Steering Committee--which included elected…

  3. The Aftermath of Remedial Math: Investigating the Low Rate of Certificate Completion among Remedial Math Students

    ERIC Educational Resources Information Center

    Bahr, Peter Riley

    2013-01-01

    Nationally, a majority of community college students require remedial assistance with mathematics, but comparatively few students who begin the remedial math sequence ultimately complete it and achieve college-level math competency. The academic outcomes of students who begin the sequence but do not complete it are disproportionately unfavorable:…

  4. In Situ Remediation Integrated Program: Technology summary

    SciTech Connect

    Not Available

    1994-02-01

    The In Situ Remediation Integrated Program (ISR IP) was instituted out of recognition that in situ remediation could fulfill three important criteria: significant cost reduction of cleanup by eliminating or minimizing excavation, transportation, and disposal of wastes; reduced health impacts on workers and the public by minimizing exposure to wastes during excavation and processing; and remediation of inaccessible sites, including: deep subsurfaces, in, under, and around buildings. Buried waste, contaminated soils and groundwater, and containerized wastes are all candidates for in situ remediation. Contaminants include radioactive wastes, volatile and non-volatile organics, heavy metals, nitrates, and explosive materials. The ISR IP intends to facilitate development of in situ remediation technologies for hazardous, radioactive, and mixed wastes in soils, groundwater, and storage tanks. Near-term focus is on containment of the wastes, with treatment receiving greater effort in future years. ISR IP is an applied research and development program broadly addressing known DOE environmental restoration needs. Analysis of a sample of 334 representative sites by the Office of Environmental Restoration has shown how many sites are amenable to in situ remediation: containment--243 sites; manipulation--244 sites; bioremediation--154 sites; and physical/chemical methods--236 sites. This needs assessment is focused on near-term restoration problems (FY93--FY99). Many other remediations will be required in the next century. The major focus of the ISR EP is on the long term development of permanent solutions to these problems. Current needs for interim actions to protect human health and the environment are also being addressed.

  5. Urban hopper.

    SciTech Connect

    Xavier, Patrick Gordon; Feddema, John Todd; Little, Charles Quentin; Spletzer, Barry Louis; Fischer, Gary John; Weagle, Christian A.; Salton, Jonathan Robert; Marron, Lisa Carol; Malchano, Matthew D.; Giarrantana, John; Murphy, Michael P.; Rizzi, Alfred A.; Buerger, Stephen P.

    2010-03-01

    Hopping robots provide the possibility of breaking the link between the size of a ground vehicle and the largest obstacle that it can overcome. For more than a decade, DARPA and Sandia National Laboratories have been developing small-scale hopping robot technology, first as part of purely hopping platforms and, more recently, as part of platforms that are capable of both wheeled and hopping locomotion. In this paper we introduce the Urban Hopper robot and summarize its capabilities. The advantages of hopping for overcoming certain obstacles are discussed. Several configurations of the Urban Hopper are described, as are intelligent capabilities of the system. Key challenges are discussed.

  6. Phytoremediative urban design: transforming a derelict and polluted harbour area into a green and productive neighbourhood.

    PubMed

    Wilschut, M; Theuws, P A W; Duchhart, I

    2013-12-01

    Many urban areas are polluted by industrial activities and waste disposal in landfills. Since conventional soil remediation techniques are costly and unsustainable, phytoremediation might offer an alternative. In this article, we explore how phytoremediation can be integrated into the transformation of urban post-industrial areas, while improving public space. Buiksloterham, a polluted and deprived industrial area in Amsterdam, serves as case study. Buiksloterham is polluted with heavy metals, with Zinc (Zn) concentrations being the highest. A regression-model for Alpine Pennycress (Thlaspi caerulescens) is used to estimate the time needed to remediate the site. This reveals a conflict in time between remediation and urban development. A research by design experiment shows how to overcome this conflict by dealing with polluted soil innovatively while emphasizing spatial and aesthetic qualities of the phytoremediation plant species. The resulting landscape framework integrates phytoremediation with biomass production and gives new ecological, economic and social value to Buiksloterham.

  7. State of the Science Review: Potential for Beneficial Use of Waste By-Products for In-situ Remediation of Metal-Contaminated Soil and Sediment

    EPA Science Inventory

    Metal and metalloid contamination of soil and sediment is a widespread problem both in urban and rural areas throughout the United States (U.S. EPA, 2014). Beneficial use of waste by-products as amendments to remediate metal-contaminated soils and sediments can provide major eco...

  8. State of the Science Review: Potential for Beneficial Use of Waste By-Products for In-situ Remediation of Metal-Contaminated Soil and Sediment

    EPA Science Inventory

    Metal and metalloid contamination of soil and sediment is a widespread problem both in urban and rural areas throughout the United States (U.S. EPA, 2014). Beneficial use of waste by-products as amendments to remediate metal-contaminated soils and sediments can provide major eco...

  9. Triad method for assessing the remediation effect of humic preparations on urbanozems

    NASA Astrophysics Data System (ADS)

    Pukalchik, M. A.; Terekhova, V. A.; Yakimenko, O. S.; Kydralieva, K. A.; Akulova, M. I.

    2015-06-01

    The data on the pollutant content, ecological toxicity, and structural and functional specifics of soil microbial communities in urbanozem sampled in the city of Kirov were used to describe the remediation effect of humic substances (lignohumate and nanomagnetitohumate). The integral index of environmental risk on contaminated and background soil sites was calculated using the triad method. Based on varying Chemical Risk Index, Ecotoxicological Risk Index, and Ecological Risk Index, this method proved that humic substances are able to reduce ecological toxicity and transform the ecophysiological indices of biota in urban soils. The most vivid effect of humic products has been revealed on introduction of 0.0025 and 0.01% mass. The biological activity of nanomagnetitohumate and lignohumate, rather than their ability to bind toxicants, is apparently the principal factor controlling their remediating effect.

  10. Assessing the trend in sustainable remediation: A questionnaire survey of remediation professionals in various countries.

    PubMed

    Hou, Deyi; Guthrie, Peter; Rigby, Mark

    2016-12-15

    Over the past decade, sustainable remediation has grown from an emerging concept into a widely accepted new institutional norm. Scholar literature increased exponentially from nearly none in late 1990s to over 400 publications per year in 2014. The present study used a questionnaire survey conducted in 2012 and 2014 to assess the global trend in the awareness and practice of sustainable remediation. A total of 373 responses were received from survey participants located in 22 countries. The survey found that the US and the UK similarly had the highest level of awareness and adoption rate of sustainable remediation. Asia and other developing countries had much lower awareness levels and/or adoption rates. For all regions, the adoption rates were significantly lower than awareness levels, indicating a large gap between awareness and practice. One specific example is regarding minimizing greenhouse gas emission, which is a focal point in sustainable remediation literature, but with very low adoption rate according to this survey. This study also found that the adoption rates of a few sustainable remediation considerations, such as "minimizing local scale secondary impact", "minimizing national to global scale secondary impact", and "bringing prosperity to disadvantaged community", had decreased between 2012 and 2014. On the other hand, the survey also suggests the remediation community has rendered more expertise, training, and resources in sustainable remediation between 2012 and 2014. The mixed results suggest that in order to enhance sustainable remediation adoption, it is imperative to employ continued effort to enhance the understanding of sustainable remediation by practitioners and to link self-interest and public interest with sustainable remediation considerations. Copyright © 2016 Elsevier Ltd. All rights reserved.

  11. ICDF Complex Remedial Action Work Plan

    SciTech Connect

    W. M. Heileson

    2006-12-01

    This Remedial Action Work Plan provides the framework for operation of the Idaho Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Disposal Facility Complex (ICDF). This facility includes (a) an engineered landfill that meets the substantial requirements of DOE Order 435.1, Resource Conservation and Recovery Act Subtitle C, Idaho Hazardous Waste Management Act, and Toxic Substances Control Act polychlorinated biphenyl landfill requirements; (b) centralized receiving, inspections, administration, storage/staging, and treatment facilities necessary for CERCLA investigation-derived, remedial, and removal waste at the Idaho National Laboratory (INL) prior to final disposition in the disposal facility or shipment off-Site; and (c) an evaporation pond that has been designated as a corrective action management unit. The ICDF Complex, including a buffer zone, will cover approximately 40 acres, with a landfill disposal capacity of approximately 510,000 yd3. The ICDF Complex is designed and authorized to accept INL CERCLA-generated wastes, and includes the necessary subsystems and support facilities to provide a complete waste management system. This Remedial Action Work Plan presents the operational approach and requirements for the various components that are part of the ICDF Complex. Summaries of the remedial action work elements are presented herein, with supporting information and documents provided as appendixes to this work plan that contain specific detail about the operation of the ICDF Complex. This document presents the planned operational process based upon an evaluation of the remedial action requirements set forth in the Operable Unit 3-13 Final Record of Decision.

  12. SUSTAINABLE REMEDIATION SOFTWARE TOOL EXERCISE AND EVALUATION

    SciTech Connect

    Kohn, J.; Nichols, R.; Looney, B.

    2011-05-12

    The goal of this study was to examine two different software tools designed to account for the environmental impacts of remediation projects. Three case studies from the Savannah River Site (SRS) near Aiken, SC were used to exercise SiteWise (SW) and Sustainable Remediation Tool (SRT) by including both traditional and novel remediation techniques, contaminants, and contaminated media. This study combined retrospective analysis of implemented projects with prospective analysis of options that were not implemented. Input data were derived from engineering plans, project reports, and planning documents with a few factors supplied from calculations based on Life Cycle Assessment (LCA). Conclusions drawn from software output were generally consistent within a tool; both tools identified the same remediation options as the 'best' for a given site. Magnitudes of impacts varied between the two tools, and it was not always possible to identify the source of the disagreement. The tools differed in their quantitative approaches: SRT based impacts on specific contaminants, media, and site geometry and modeled contaminant removal. SW based impacts on processes and equipment instead of chemical modeling. While SW was able to handle greater variety in remediation scenarios, it did not include a measure of the effectiveness of the scenario.

  13. Electrokinetic soil remediation--critical overview.

    PubMed

    Virkutyt, Jurate; Sillanpää, Mika; Latostenmaa, Petri

    2002-04-22

    In recent years, there has been increasing interest in finding new and innovative solutions for the efficient removal of contaminants from soils to solve groundwater, as well as soil, pollution. The objective of this review is to examine several alternative soil-remediating technologies, with respect to heavy metal remediation, pointing out their strengths and drawbacks and placing an emphasis on electrokinetic soil remediation technology. In addition, the review presents detailed theoretical aspects, design and operational considerations of electrokinetic soil-remediation variables, which are most important in efficient process application, as well as the advantages over other technologies and obstacles to overcome. The review discusses possibilities of removing selected heavy metal contaminants from clay and sandy soils, both saturated and unsaturated. It also gives selected efficiency rates for heavy metal removal, the dependence of these rates on soil variables, and operational conditions, as well as a cost-benefit analysis. Finally, several emerging in situ electrokinetic soil remediation technologies, such as Lasagna, Elektro-Klean, electrobioremediation, etc., are reviewed, and their advantages, disadvantages and possibilities in full-scale commercial applications are examined.

  14. [Scorpion puncture: medical treatment and home remedies].

    PubMed

    Lagunas-Flores, Artemio; Lagunas-Jaimes, Gregoria Natividad

    2009-01-01

    The scorpion puncture is a medical urgency. The greater frequency happens in Jalisco, Morelos and Guerrero. Controversy in the medical treatment persists, some use serum anti-scorpion, others only in critical cases. People by tradition are used the home remedies to cure the scorpion puncture. Our objective was to know the medical treatment and home remedies used in scorpion punctures in the State of Guerrero. Retrospective, cross-sectional-descriptive, observational study through a non-probabilistic sample by quotas during a period of eight years with 1,174 patients with age above 18 years with a interview applied by medical students. All the affected patients used home remedies, 94% went to the physician, the more frequent remedies used were garlic, tobacco, cacahuananche, salt, eggs. The most frequent prescribed drugs were: antiscorpion serum, calcium, chloroquine, an antihistamine drugs. Of the total of affected patients, 45% were children and 53 % adults. In Guerrero, it is traditional to use different home remedies. Doctors used antiscorpion serum in the 56.73% of the cases and symptomatic treatment with different medications.

  15. Lead contamination of paint remediation workers' vehicles.

    PubMed

    Boraiko, Carol; Wright, Eva M; Ralston, Faye

    2013-03-01

    Exposure to lead has been shown to be harmful to adults; it is a teratogen, it can damage the peripheral nervous system, and it adversely affects the reproductive system. Professional lead-based paint remediation workers are at risk of exposure to lead dust. The authors' study was conducted to determine if these remediation workers transfer lead from their work site to their vehicles and then potentially expose their families. It was hypothesized that remediation workers transported the lead from the remediation work site to the floorboards of their vehicles due to not following required protective equipment use. The laboratory's level of quantitation for lead on the wipe samples, 10 microg/ft2, was used to indicate lead contamination. This level was exceeded in 50% of the floorboards sampled. These results confirm that many vehicle floorboards used by remediation workers are contaminated with lead dust, potentially resulting in transfer of lead dust. The ultimate detrimental outcome could be the transfer of lead particles to other family members, causing the poisoning of a child or other at-risk person.

  16. Report urges research on climate remediation

    NASA Astrophysics Data System (ADS)

    Showstack, Randy

    2011-10-01

    The U.S. federal government should initiate a coordinated research program on climate remediation so that such measures—defined as intentional actions to counter climate effects of past greenhouse gas emissions on the atmosphere—could be modeled and evaluated, according to a task force of the Bipartisan Policy Center, a Washington, D. C., think tank. During a 4 October briefing to release the report, task force members said that some climate remediation measures, which also have been referred to as geoengineering, may need to be considered in an emergency if the climate system undergoes rapid change or experiences a tipping point that presents severe threats. The report by the center's Task Force on Climate Remediation Research pointedly does not recommend deployment of climate remediation technologies, noting that "far more research is needed to understand the potential impacts, risks, and costs associated with specific technologies." In addition, the task force argues that climate remediation measures should not be considered as a substitute for controlling risk through climate mitigation measures.

  17. EDTA retention and emissions from remediated soil.

    PubMed

    Jez, Erika; Lestan, Domen

    2016-05-01

    EDTA-based remediation is reaching maturity but little information is available on the state of chelant in remediated soil. EDTA soil retention was examined after extracting 20 soil samples from Pb contaminated areas in Slovenia, Austria, Czech Republic and USA with 120 mM kg(-1) Na2H2EDTA, CaNa2EDTA and H4EDTA for 2 and 24 h. On average, 73% of Pb was removed from acidic and 71% from calcareous soils (24 h extractions). On average, 15% and up to 64% of applied EDTA was after remediation retained in acidic soils. Much less; in average 1% and up to the 22% of EDTA was retained in calcareous soils. The secondary emissions of EDTA retained in selected remediated soil increased with the acidity of the media: the TCLP (Toxicity Characteristic Leaching Procedure) solution (average pH end point 3.6) released up to 36% of EDTA applied in the soil (28.1 mmol kg(-1)). Extraction with deionised water (pH > 6.0) did not produce measurable EDTA emissions. Exposing soil to model abiotic (thawing/freezing cycles) and biotic (ingestion by earthworms Lumbricus rubellus) ageing factors did not induce additional secondary emissions of EDTA retained in remediated soil.

  18. Biopulsing: An in situ aeration remediation strategy

    SciTech Connect

    Gupta, H.S.; Marshall, T.R.

    1997-12-31

    In situ soil aeration is an accepted technology for remediation of soil and groundwater impacted with petroleum hydrocarbons and halogenated hydrocarbons. This technology was utilized for remediating soil and groundwater at an aerospace components manufacturing facility located in southern California, Soil and groundwater had been impacted at the facility from historical releases of petroleum and halogenated hydrocarbons. Innovations in remediation system design, installation and monitoring strategies are described in this paper. The following tasks were conducted; (1) evaluation of the extent of impacted soil and groundwater; (2) collection of site-specific data necessary to evaluate and implement an appropriate remediation system to address the hydrocarbon-impacted soil; and (3) design, installation and operation of an in situ aeration system for remediation of soil and groundwater. The in situ aeration system operates on the principles of bioventing. Air was injected weekly into the subsurface by a system of wells placed at selected locations in short pulses lasting several hours. Oxygen utilization in the subsurface was monitored using subsurface sensors. Subsurface oxygen utilization rates of up to 1.5 percent resulted in an estimate of mass reduction of 71 pounds of hydrocarbons. The concentration of halogenated hydrocarbons was reduced in groundwater following commencement of aeration was observed in subsequent sampling events. The contribution of vadose zone aeration in reducing the concentrations of halogenated hydrocarbons in groundwater is currently being evaluated.

  19. Urban Odyssey

    ERIC Educational Resources Information Center

    Gewertz, Catherine

    2004-01-01

    This article describes the experiences of teachers who participated in a program run by Outward Bound that helps them examine their beliefs and biases. The participants in this "urban expedition" come from schools that have contracted with Outward Bound to convert to its expeditionary model. Driving all Outward Bound ventures is the notion that…

  20. Urban Agrarians.

    ERIC Educational Resources Information Center

    White, Kerry A.

    1996-01-01

    Chicago's High School for Agricultural Sciences is a popular and successful urban school devoted to agriculture. This agriculturally focused high school features a tough academic curriculum and hands-on learning designed to prepare the predominantly Black and Hispanic student body for college and careers in agriculture. (SM)

  1. Virtual Urbanism.

    ERIC Educational Resources Information Center

    Sirc, Geoffrey

    2001-01-01

    Considers how visual literacy implies a poetics of technology, one rooted in basic human passion. Notes that most academic forms sanctioned for students to inhabit are as monumentally dull as the urban forms in which they pass an extra-academic portion of their lives. Concludes that technology is most useful when it allows the poetic spirit to…

  2. Urban Odyssey

    ERIC Educational Resources Information Center

    Gewertz, Catherine

    2004-01-01

    This article describes the experiences of teachers who participated in a program run by Outward Bound that helps them examine their beliefs and biases. The participants in this "urban expedition" come from schools that have contracted with Outward Bound to convert to its expeditionary model. Driving all Outward Bound ventures is the notion that…

  3. Phosphorus Amendment Efficacy for In Situ Remediation of ...

    EPA Pesticide Factsheets

    A validated method is needed to measure reductions of in vitro bioaccessible (IVBA) Pb in urban soil remediated with amendments. This study evaluated the effect of in vitro extraction solution pH and glycine buffer on bioaccesible Pb in P-treated soils. Two Pb-contaminated soils (790-1300 mg Pb kg-1), one from a garden and one from a city lot in Cleveland, OH, were incubated in a bench scale experiment for 1 yr. Six phosphate amendments, including bone meal, fish bone, poultry litter, monoammonium phosphate, diammonium phosphate, and triple superphosphate, were added to containers at two application rates. Lead IVBA was assessed using USEPA Method 1340 and three modified versions of this method. Modifications included using solutions with pH 1.5 and 2.5 as well as using solutions with and without 0.4 mol L-1 glycine. Soil amendments were effective in reducing IVBA Pb in these soils as measured by pH 1.5 with glycine buffer. The greatest reductions in IVBA Pb, from 5 to 26%, were found using pH 2.5 extractions. Lead mineral results showed several soil amendments promoted Pb phosphate formation, an indicator of remediation success. A significant negative linear relationship between reduction in IVBA Pb and Pb-phosphate formation was found only for pH 2.5 without glycine extraction solution. A modified USEPA Method 1340 without glycine and using pH 2.5 has the potential to predict P soil treatment efficacy and reductions in bioavailable Pb. Developing mana

  4. Phosphorus Amendment Efficacy for In Situ Remediation of ...

    EPA Pesticide Factsheets

    A validated method is needed to measure reductions of in vitro bioaccessible (IVBA) Pb in urban soil remediated with amendments. This study evaluated the effect of in vitro extraction solution pH and glycine buffer on bioaccesible Pb in P-treated soils. Two Pb-contaminated soils (790-1300 mg Pb kg-1), one from a garden and one from a city lot in Cleveland, OH, were incubated in a bench scale experiment for 1 yr. Six phosphate amendments, including bone meal, fish bone, poultry litter, monoammonium phosphate, diammonium phosphate, and triple superphosphate, were added to containers at two application rates. Lead IVBA was assessed using USEPA Method 1340 and three modified versions of this method. Modifications included using solutions with pH 1.5 and 2.5 as well as using solutions with and without 0.4 mol L-1 glycine. Soil amendments were effective in reducing IVBA Pb in these soils as measured by pH 1.5 with glycine buffer. The greatest reductions in IVBA Pb, from 5 to 26%, were found using pH 2.5 extractions. Lead mineral results showed several soil amendments promoted Pb phosphate formation, an indicator of remediation success. A significant negative linear relationship between reduction in IVBA Pb and Pb-phosphate formation was found only for pH 2.5 without glycine extraction solution. A modified USEPA Method 1340 without glycine and using pH 2.5 has the potential to predict P soil treatment efficacy and reductions in bioavailable Pb. Developing mana

  5. Technology development activities supporting tank waste remediation

    SciTech Connect

    Bonner, W.F.; Beeman, G.H.

    1994-06-01

    This document summarizes work being conducted under the U.S. Department of Energy`s Office of Technology Development (EM-50) in support of the Tank Waste Remediation System (TWRS) Program. The specific work activities are organized by the following categories: safety, characterization, retrieval, barriers, pretreatment, low-level waste, and high-level waste. In most cases, the activities presented here were identified as supporting tank remediation by EM-50 integrated program or integrated demonstration lead staff and the selections were further refined by contractor staff. Data sheets were prepared from DOE-HQ guidance to the field issued in September 1993. Activities were included if a significant portion of the work described provides technology potentially needed by TWRS; consequently, not all parts of each description necessarily support tank remediation.

  6. Carbon adsorption onsite for remedial actions

    SciTech Connect

    Githens, G.D.

    1984-01-01

    Environmental remediation options range from various offsite disposal methods to onsite concentration, treatment or storage. Onsite treatment using mobile carbon adsorption treatment systems has long been a favored option for remedial actions because of its proven performance in the clean-up of transportation spills, waste sites, runoff from chemical warehouse fires and many types of groundwater pollution. Carbon adsorption is fundamentally a concentration technology. It will, for example, preferentially concentrate organics. Following its use, the carbon is usually transported offsite for thermal regeneration (mobile regeneration is not generally available) or landfilled if certain contaminants such as PCBs are on the carbon. Most remediation projects are temporary in nature and involve removing contamination from finite areas to attain specific pollutant limits. The best way to approach these circumstances is to utilize mobile, rapidly deployed, modular units. With mobile pretreatment equipment, the field engineer can solve problems with control over cost and system performance.

  7. In situ remediation of the geoenvironment

    SciTech Connect

    Evans, J.C.

    1997-12-31

    This document contains the Proceedings of the Conference on In-Situ Remediation of the Geoenvironment held in Minneapolis, Minnesota, October 5-8, 1997. The progress in the development and implementation of techniques for the remediation of contaminated soils and ground water has been and continues to be rapid. These proceedings focus on the in-situ remediation of the geoenvironment and are a result of contributions by academicians, practicing engineers, and contractors. Contributors include the Environmental Engineering Division and the Geo-Institute. Contaminants discussed include petroleum hydrocarbons, cadmium, hexavalent chromium, BTEX, TCE, NAPL`s and various other hazardous wastes. Technologies discussed include permeable reactive barriers, soil vapor extraction, air sparging, containment, barrier walls, slurry walls, vibro-sealing, NAPL`s, stabilization, electrokinetics, vertical drains, radio frequency heating, in-situ oxidation, and others.

  8. Mapping Contaminant Remediation with Electrical Resistivity Tomography

    NASA Astrophysics Data System (ADS)

    Gerhard, J.; Power, C.; Tsourlos, P.; Karaoulis, M.; Giannopoulos, A.; Soupios, P. M.; Simyrdanis, K.

    2014-12-01

    The remediation of sites contaminated with industrial chemicals - specifically dense non-aqueous phase liquids (DNAPLs) like coal tar and chlorinated solvents - represents a major geoenvironmental challenge. Remediation activities would benefit from a non-destructive technique to map the evolution of DNAPL mass in space and time. Electrical resistivity tomography (ERT) has long-standing potential in this context but has not yet become a common tool at DNAPL sites. This work evaluated the potential of time-lapse ERT for mapping DNAPL mass reduction in real time during remediation. Initially, a coupled DNAPL-ERT numerical model was developed for exploring this potential at the field scale, generating realistic DNAPL scenarios and predicting the response of an ERT survey. Also, new four-dimensional (4D) inversion algorithms were integrated for tracking DNAPL removal over time. 4D ERT applied at the surface for mapping an evolving DNAPL distribution was first demonstrated in a laboratory experiment. Independent simulation of the experiment demonstrated the reliability of the DNAPL-ERT model for simulating real systems. The model was then used to explore the 4D ERT approach at the field scale for a range of realistic DNAPL remediation scenarios. The approach showed excellent potential for mapping shallow DNAPL changes. However, remediation at depth was not as well resolved. To overcome this limitation, a new surface-to-horizontal borehole (S2HB) ERT configuration is proposed. A second laboratory experiment was conducted that demonstrated that S2HB ERT does better resolve changes in DNAPL distribution relative to surface ERT, particularly at depth. The DNAPL-ERT model was also used to demonstrate the improved mapping of S2HB ERT for field scale DNAPL scenarios. Overall, this work demonstrates that, with these innovations, ERT exhibits significant potential as a real time, non-destructive geoenvironmental remediation site monitoring tool.

  9. Implementation of Electrokinetic-ISCO Remediation

    NASA Astrophysics Data System (ADS)

    Wu, M. Z.; Reynolds, D.; Fourie, A.; Prommer, H.; Thomas, D.

    2011-12-01

    Significant challenges remain in the remediation of low-permeability porous media (e.g. clays, silts) contaminated with dissolved and sorbed organic contaminants. Current remediation technologies, such as in-situ chemical oxidation (ISCO), are often ineffective and the treatment region is limited by very slow rates of groundwater flow (advection) or molecular diffusion. At the laboratory-scale several studies (e.g. Reynolds et al. 2008) have highlighted the potential for utilising electrokinetic transport, as induced by the application of an electric field, to deliver a remediation compound (e.g. permanganate, persulfate) within heterogeneous and low-permeability sediments for ISCO (termed EK-ISCO) or other treatments. Process-based numerical modelling of the coupled flow, transport and reaction processes can provide important insights into the prevailing controls and feedback mechanisms and therefore guide the optimisation of EK-ISCO remediation efficacy. In this study, a numerical model was developed that simulates groundwater flow and multi-species reactive transport under both hydraulic and electric gradients (Wu et al. 2010). Coupled into the existing, previously verified reactive transport model PHT3D (Prommer et al. 2003), the model was verified against analytical solutions and data from experimental studies. Using the newly developed model, the sensitivity of electrokinetic, hydraulic and engineering parameters as well as alternative configurations of the EK-ISCO treatment process were investigated. The duration and energy required for remediation was most dependent upon the applied voltage gradient and the natural oxidant demand and all investigated parameters affected the remediation process to some extent. Investigated variants of treatment configurations included several alternative locations for oxidant injection and a series of one-dimensional and two-dimensional electrode configurations.

  10. Remedial action selection using groundwater modeling

    SciTech Connect

    Haddad, B.I.; Parish, G.B.; Hauge, L.

    1996-12-31

    An environmental investigation uncovered petroleum contamination at a gasoline station in southern Wisconsin. The site was located in part of the ancestral Rock River valley in Rock County, Wisconsin where the valley is filled with sands and gravels. Groundwater pump tests were conducted for determination of aquifer properties needed to plan a remediation system; the results were indicative of a very high hydraulic conductivity. The site hydrogeology was modeled using the U.S. Geological Survey`s groundwater model, Modflow. The calibrated model was used to determine the number, pumping rate, and configuration of recovery wells to remediate the site. The most effective configuration was three wells pumping at 303 liters per minute (1/m) (80 gallons per minute (gpm)), producing a total pumping rate of 908 l/m (240 gpm). Treating 908 l/min (240 gpm) or 1,308,240 liters per day (345,600 gallons per day) constituted a significant volume to be treated and discharged. It was estimated that pumping for the two year remediation would cost $375,000 while the air sparging would cost $200,000. The recommended remedial system consisted of eight air sparging wells and four vapor recovery laterals. The Wisconsin Department of Natural Resources (WDNR) approved the remedial action plan in March, 1993. After 11 months of effective operation the concentrations of removed VOCs had decreased by 94 percent and groundwater sampling indicated no detectable concentrations of gasoline contaminants. Groundwater modeling was an effective technique to determine the economic feasibility of a groundwater remedial alternative.

  11. Comparison of international approaches to sustainable remediation.

    PubMed

    Rizzo, Erika; Bardos, Paul; Pizzol, Lisa; Critto, Andrea; Giubilato, Elisa; Marcomini, Antonio; Albano, Claudio; Darmendrail, Dominique; Döberl, Gernot; Harclerode, Melissa; Harries, Nicola; Nathanail, Paul; Pachon, Carlos; Rodriguez, Alfonso; Slenders, Hans; Smith, Garry

    2016-12-15

    Since mid-to-late 2000s growing interest for sustainable remediation has emerged in initiatives from several international and national organisations as well as other initiatives from networks and forums. This reflects a realisation that risk-management activities can about bring environmental, social, and economic impacts (positive or negative) in addition to achieving risk-based remediation goals. These ideas have begun to develop as a new discipline of "sustainable remediation". The various initiatives have now published a number of frameworks, standards, white papers, road maps and operative guidelines. The similarities and differences in the approaches by these outputs and general trends have been identified. The comparison is based on a set of criteria developed in discussion with members of these various initiatives, and identifies a range of similarities between their publications. Overall the comparison demonstrates a high level of consensus across definitions and principles, which leads to the conclusion that there is a shared understanding of what sustainable remediation is both across countries and stakeholder groups. Publications do differ in points of detail, in particular about the operational aspects of sustainable remediation assessment. These differences likely result from differences in context and legal framework. As this analysis was carried out its findings were debated with members of the various international initiatives, many of whom have been included as authors. Hence the outcomes described in this paper can be seen as the result of a sort of multi-level debate among international experts (authors) and so can offer a starting point to new sustainable remediation initiatives (for example in other countries) that aim to start developing their own documents. Copyright © 2016 Elsevier Ltd. All rights reserved.

  12. Determination of urban groundwater pollution in alluvial aquifer using linked process models considering urban water cycle

    NASA Astrophysics Data System (ADS)

    Vizintin, Goran; Souvent, Petra; Veselič, Miran; Cencur Curk, Barbara

    2009-10-01

    SummaryThis paper presents the results of the 5th FP project AISUWRS (Assessing and Improving the Sustainability of Urban Water Resources and Systems) which aimed to assess the impact of the urban water infrastructure to underlying or nearby aquifers with the urban water balance modelling approach - a chain of different models that handle with contaminant fluxes and the movement of contaminants from the urban infrastructure into the underlying aquifer. An existing urban water management model UVQ was linked to a model for sewer infiltration and exfiltration (NEIMO), as well as unsaturated zone models (SLeakI/POSI, UL_FLOW) with existing numerical groundwater models. The linked process models offer the prospect of better quantification of urban water balance and contaminant loads, including improved estimates of total recharge and its components in urban areas. Once the model framework has been set up for a selected city, it can easily be updated in the future and it can be used for other purposes like planning of local remediation measures in the vicinity of individual contaminant spillages. This paper describes the application and results of the urban water model chain for the city of Ljubljana, which is the capital of Slovenia. The results from this study suggest that residential land-uses in urban areas with thick unsaturated zone may have significantly smaller impact on the groundwater than agriculture or industry. This can be seen as a speculative understanding of the groundwater pollutions problems. In this respect, use of sustainable urban development systems like on-site infiltration of roof runoff and improved sewer control and standards could result in better groundwater quality.

  13. Integrated groundwater quality management in urban areas

    NASA Astrophysics Data System (ADS)

    Swartjes, F. A.; Otte, P. F.

    2012-04-01

    Traditionally, groundwater assessments and remediations are approached at the scale of individual groundwater plumes. In urban areas, however, this management of individual groundwater plumes is often problematic for technical, practical or financial reasons, since the groundwater quality is often affected by a combination of sources, including (former) industrial activities, spills and leachate from uncontrolled landfills and building materials. As a result, often a whole series of intermingling contamination plumes is found in large volumes of groundwater. In several countries in the world, this led to stagnation of groundwater remediation in urban areas. Therefore, in the Netherlands there is a tendency managing groundwater in urban areas from an integrated perspective and on a larger scale. This so-called integrated groundwater quality management is often more efficient and hence, cheaper, since the organisation of the management of a cluster of groundwater plumes is much easier than it would be if all individual groundwater plumes were managed at different points in time. Integrated groundwater quality management should follow a tailor-made approach. However, to facilitate practical guidance was developed. This guidance relates to the delineation of the domain, the management of sources for groundwater contamination, procedures for monitoring, and (risk-based) assessment of the groundwater quality. Function-specific risk-based groundwater quality criteria were derived to support the assessment of the groundwater quality.

  14. Remediation of Groundwater Contaminated by Nuclear Waste

    NASA Astrophysics Data System (ADS)

    Parker, Jack; Palumbo, Anthony

    2008-07-01

    A Workshop on Accelerating Development of Practical Field-Scale Bioremediation Models; An Online Meeting, 23 January to 20 February 2008; A Web-based workshop sponsored by the U.S. Department of Energy Environmental Remediation Sciences Program (DOE/ERSP) was organized in early 2008 to assess the state of the science and knowledge gaps associated with the use of computer models to facilitate remediation of groundwater contaminated by wastes from Cold War era nuclear weapons development and production. Microbially mediated biological reactions offer a potentially efficient means to treat these sites, but considerable uncertainty exists in the coupled biological, chemical, and physical processes and their mathematical representation.

  15. Dutch refinery remediating contaminated soils on site

    SciTech Connect

    Not Available

    1994-02-07

    A Rotterdam refinery is treating 10,000 metric tons of petroleum-contaminated soils in above ground bioremediation cells equipped with vapor-extraction systems. The treatment process, designed by Groundwater Technology Inc., Norwood, Mass., the refinery's remediation consultant, is degrading the hydrocarbons to meet strict Dutch standards. Project completion is expected by Spring, requiring a total of only about 9 months. The contamination was accumulated in more than 25 years of refining operations at the site. As part of the construction of a new hydrocracker, the refinery was required to remediate the soils and take measures to reduce groundwater contamination.

  16. How to accelerate the Fernald remediation

    SciTech Connect

    Yates, M.K.; Reising, J.

    1996-01-10

    The Fernald Environmental Management Project is unique among Department of Energy (DOE) sites by virtue of successful efforts by the Fernald Environmental Restoration Management Corporation (FERMCO) and DOE-Fernald Area Office (FN) in securing a stak-eholder-assisted final site closure vision and all Record of Decisions (ROD) or Interim RODs required to set the stage for final remediation. DOE and FERMCO have agreed in principle on a Ten Year Plan which accelerates all activities to remediate the site in approximately half the target schedule. This paper presents the path that led to the current Ten Year Plan, the key elements of the plan and the implementation strategies.

  17. Urban Challenges for the Urban Educator Corps

    ERIC Educational Resources Information Center

    Howey, Kenneth

    2008-01-01

    The Urban Educator Corps, comprised of urban education school deans and faculty members from thirty-nine public urban research universities, is committed to advancing the quality of urban education, specifically addressing the key issues of teacher quality, student retention and success, and the creation of systemic partnerships. This article…

  18. [Urbanization and the urban network of Panama].

    PubMed

    Lecompte, D

    1983-01-01

    The urban structure of Panama is described. The dominant role of the Panama Canal in determining the urban structure of the country is noted. The urban centers located next to the canal contain approximately 78 percent of the country's urban population. (summary in SPA)

  19. DESCRIPTION OF MODELING ANALYSES IN SUPPORT OF THE 200-ZP-1 REMEDIAL DESIGN/REMEDIAL ACTION

    SciTech Connect

    VONGARGEN BH

    2009-11-03

    The Feasibility Study/or the 200-ZP-1 Groundwater Operable Unit (DOE/RL-2007-28) and the Proposed Plan/or Remediation of the 200-ZP-1 Groundwater Operable Unit (DOE/RL-2007-33) describe the use of groundwater pump-and-treat technology for the 200-ZP-1 Groundwater Operable Unit (OU) as part of an expanded groundwater remedy. During fiscal year 2008 (FY08), a groundwater flow and contaminant transport (flow and transport) model was developed to support remedy design decisions at the 200-ZP-1 OU. This model was developed because the size and influence of the proposed 200-ZP-1 groundwater pump-and-treat remedy will have a larger areal extent than the current interim remedy, and modeling is required to provide estimates of influent concentrations and contaminant mass removal rates to support the design of the aboveground treatment train. The 200 West Area Pre-Conceptual Design/or Final Extraction/Injection Well Network: Modeling Analyses (DOE/RL-2008-56) documents the development of the first version of the MODFLOW/MT3DMS model of the Hanford Site's Central Plateau, as well as the initial application of that model to simulate a potential well field for the 200-ZP-1 remedy (considering only the contaminants carbon tetrachloride and technetium-99). This document focuses on the use of the flow and transport model to identify suitable extraction and injection well locations as part of the 200 West Area 200-ZP-1 Pump-and-Treat Remedial Design/Remedial Action Work Plan (DOEIRL-2008-78). Currently, the model has been developed to the extent necessary to provide approximate results and to lay a foundation for the design basis concentrations that are required in support of the remedial design/remediation action (RD/RA) work plan. The discussion in this document includes the following: (1) Assignment of flow and transport parameters for the model; (2) Definition of initial conditions for the transport model for each simulated contaminant of concern (COC) (i.e., carbon

  20. Research Progress of Artificial Forest in the Remediation of Heavy Metal Contaminated Soils

    NASA Astrophysics Data System (ADS)

    Jiafang, MA; Guangtao, MENG; Liping, HE; Guixiang, LI

    2017-01-01

    (1) Remediation of soil contaminated by heavy metals has become a hot topic in the world, and phytoremediation technology is the most widely used. (2) In addition to traditional economic benefits, ecological benefits of artificial forest have been more and more important, which are very helpful to soil polluted with heavy metals in the environment. (3) The characteristics of heavy metal pollution of soil and plantations of repair mechanism have been reviewed, and the current mining areas, wetlands, urban plantations on heavy metal elements have enriched the research results. The purpose is to find a new path for governance of heavy metal soil pollution.

  1. A Regional Categorization for "New-Type Urbanization" in China.

    PubMed

    Fang, Chuanglin; Ma, Haitao; Wang, Jing

    2015-01-01

    Regional differences in the character of urbanization in China are substantial. The promotion of what has been termed "new-type urbanization" cannot, as a result of these regional differences, be expected to follow a universal approach--rather, such a development must objectively adhere to locational and category-specific principles and adopt differentiated urbanization development models. Regional categorization is often used in geography, but is rarely deployed in research addressing human and social problems relating to urbanization. In March 2014, China published the National New-type Urbanization Plan (2014-2020), which calls for the scientific and reasonable planning of "new-type urbanization," and appropriate regional categorizations are urgently needed in order to guide this reform. Responding to this challenge, this research engaged in the design of a "dominantly quantitative analysis, qualitatively supplemented" method in order to divide China into 5 main regions and 47 sub-regions in terms of new-type urbanization. The paper discusses the features and key problems of each region. This study introduces a new method for regional categorization, thereby remedying the lack of regional categorization in relation to "new-type urbanization" in China, and ultimately promoting the development of regional categorization in the humanities as a valuable reference for healthy and sustainable Chinese urbanization.

  2. Single-Concept Videotapes for College Remedial Learning

    ERIC Educational Resources Information Center

    Utz, Peter

    1973-01-01

    More than 100 videotapes form part of a new remedial algebra program developed by Kingsborough Community College at Manhattan Beach, Brooklyn. Project aim was to improve remedial education in a difficult subject during a budget crisis. (Author)

  3. SADA: Ecological Risk Based Decision Support System for Selective Remediation

    EPA Science Inventory

    Spatial Analysis and Decision Assistance (SADA) is freeware that implements terrestrial ecological risk assessment and yields a selective remediation design using its integral geographical information system, based on ecological and risk assessment inputs. Selective remediation ...

  4. Printable Version of Mold Remediation in Schools and Commercial Buildings

    EPA Pesticide Factsheets

    This document presents guidelines for the remediation/cleanup of mold and moisture problems in schools and commercial buildings; these guidelines include measures designed to protect the health of building occupants and remediators.

  5. Federal Remediation Technology Roundtable: Five Years of Cooperation

    EPA Pesticide Factsheets

    An overview of the activities of the Federal Remediation Technologies Roundtable--a working group seeking to build a more collaborative atmosphere among the federal agencies involved in hazardous waste site remediation.

  6. Improving Hazardous Waste Remediation and Restoration Decisions Using Ecosystem Services

    EPA Science Inventory

    Hazardous site management in the US includes remediation of contaminated environmental media and restoration of injured natural resources. Site remediation decisions are informed by ecological risk assessment (ERA), while restoration and compensation decisions are informed by the...

  7. Single-Concept Videotapes for College Remedial Learning

    ERIC Educational Resources Information Center

    Utz, Peter

    1973-01-01

    More than 100 videotapes form part of a new remedial algebra program developed by Kingsborough Community College at Manhattan Beach, Brooklyn. Project aim was to improve remedial education in a difficult subject during a budget crisis. (Author)

  8. Remediation General Permit (RGP) for Massachusetts & New Hampshire

    EPA Pesticide Factsheets

    Documents, links & contacts for the Notice of Availability of the National Pollutant Discharge Elimination System (NPDES) General Permit for Remediation Activity Discharges – the Remediation General Permit in MA (MAG910000) and NH (NHG910000).

  9. Air-Base Remediation Workshop - Section 3 Bioventig

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sites," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  10. Air-Based Remediation Workshop - Section 2 Soil Vapor Extraction

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sties," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  11. Air-Based Remediation Workshop - Section 6 Thermal Systems

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sites," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  12. PERFORMANCE MONITORING FOR NATURAL ATTENUATION REMEDIES IN GROUND WATER

    EPA Science Inventory

    Environmental monitoring is the major component of any remedy that relies on natural attenuation processes. The objective of this document is to identify data needs and evaluation methods useful for designing monitoring networks and determining remedy effectiveness. Effective mon...

  13. SADA: Ecological Risk Based Decision Support System for Selective Remediation

    EPA Science Inventory

    Spatial Analysis and Decision Assistance (SADA) is freeware that implements terrestrial ecological risk assessment and yields a selective remediation design using its integral geographical information system, based on ecological and risk assessment inputs. Selective remediation ...

  14. Air-Based Remediation Workshop - Section 6 Thermal Systems

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sites," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  15. Air-Based Remediation Workshop - Section 2 Soil Vapor Extraction

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sties," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  16. Improving Hazardous Waste Remediation and Restoration Decisions Using Ecosystem Services

    EPA Science Inventory

    Hazardous site management in the US includes remediation of contaminated environmental media and restoration of injured natural resources. Site remediation decisions are informed by ecological risk assessment (ERA), while restoration and compensation decisions are informed by the...

  17. Air-Base Remediation Workshop - Section 3 Bioventig

    EPA Science Inventory

    Pursuant to the EPA-AIT Implementing Arrangement 7 for Technical Environmental Collaboration, Activity 11 "Remediation of Contaminated Sites," the USEPA Office of International Affairs Organized a Forced Air Remediation Workshop in Taipei to deliver expert training to the Environ...

  18. Functional remediation components: A conceptual method of evaluating the effects of remediation on risks to ecological receptors

    SciTech Connect

    Burger, Joanna; Gochfeld, Michael; Bunn, Amoret; Downs, Janelle; Jeitner, Christian; Pittfield, Taryn; Salisbury, Jennifer

    2016-08-30

    Governmental agencies, regulators, health professionals, tribal leaders, and the public are faced with understanding and evaluating the effects of cleanup activities on species, populations, and ecosystems. While engineers and managers understand the processes involved in different remediation types such as capping, pump and treat, and natural attenuation, there is often a disconnect between (1) how ecologists view the influence of different types of remediation, (2) how the public perceives them, and (3) how engineers understand them. The overall goal of the present investigation was to define the components of remediation types (= functional remediation). Objectives were to (1) define and describe functional components of remediation, regardless of the remediation type, (2) provide examples of each functional remediation component, and (3) explore potential effects of functional remediation components in the post-cleanup phase that may involve continued monitoring and assessment. Functional remediation components include types, numbers, and intensity of people, trucks, heavy equipment, pipes, and drill holes, among others. Several components may be involved in each remediation type, and each results in ecological effects, ranging from trampling of plants, to spreading invasive species, to disturbing rare species, and to creating fragmented habitats. In some cases remediation may exert a greater effect on ecological receptors than leaving the limited contamination in place. A goal of this conceptualization is to break down functional components of remediation such that managers, regulators, and the public might assess the effects of timing, extent, and duration of different remediation options on ecological systems.

  19. Urban pollution.

    PubMed

    Sancini, Angela; Tomei, Francesco; Tomei, Gianfranco; Caciari, Tiziana; Di Giorgio, Valeria; André, Jean-Claude; Palermo, Paola; Andreozzi, Giorgia; Nardone, Nadia; Schifano, Maria Pia; Fiaschetti, Maria; Cetica, Carlotta; Ciarrocca, Manuela

    2012-01-01

    Air pollution represents a health risk for people living in urban environment. Urban air consists in a complex mixture of chemicals and carcinogens and its effects on health can be summarized in acute respiratory effects, neoplastic nonneoplastic (e.g. chronic bronchitis) chronic respiratory effects, and effects on other organs and systems. Air pollution may be defined according to origin of the phenomena that determine it: natural causes (natural fumes, decomposition, volcanic ash) or anthropogenic causes which are the result of human activities (industrial and civil emissions). Transport is the sector that more than others contributes to the deterioration of air quality in cities. In this context, in recent years, governments of the territory were asked to advance policies aimed at solving problems related to pollution. In consideration of the many effects on health caused by pollution it becomes necessary to know the risks from exposure to various environmental pollutants and to limit and control their effects. Many are the categories of "outdoor" workers, who daily serve the in urban environment: police, drivers, newsagents, etc.

  20. [Methodology of enacting standards for remediation of contaminated soils].

    PubMed

    Zhou, Qixing

    2004-02-01

    Remediation technology for contaminated soils is being developed rapidly in recent years. However, there is a hysteresis in enacting remediation standards for contaminated soils. In particular, no corresponding research has been done in China. Methodology of enacting standards for the remediation of contaminated soils is discussed in order to promote the work in this field. It is emphasized that technological cleanup levels including limits of detection, environmental background levels and regulatory cleanup levels should be fully considered in the enactment of remediation standards.

  1. Field Applications of In Situ Remediation Technologies: Permeable Reactive Barriers

    DTIC Science & Technology

    2002-01-01

    Field Applications of In Situ Remediation Technologies: Permeable Reactive Barriers United States Environmental Protection Agency PRB Remediated... Applications of In Situ Remediation Technologies: Permeable Reactive Barriers 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6...unclassified c. THIS PAGE unclassified Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18 Field Applications of In Situ Remediation Technologies

  2. PROCEEDINGS OF "THE LEAD REMEDIATION EFFECTIVENESS SYMPOSIUM"

    EPA Science Inventory

    A Symposium on Lead Remediation Effectiveness, sponsored by the US Environmental Protection Agency, was held at Coeur d'Alene, Idaho, USA from 22-25 May, 2000. International participants from various levels of government, educational institutions, industry, and community represen...

  3. COSTS TO REMEDIATE MTBE-CONTAMINATED SITES

    EPA Science Inventory

    The extensive contamination of methyl tert-butyl ether (MTBE) in ground water has introduced concerns about the increased cost of remediation of MTBE releases compared to sites with BTEX only contamination. In an attempt to evaluate these costs, cost information for 311 sites wa...

  4. Overcoming Resistance to a New Remedial Program.

    ERIC Educational Resources Information Center

    Margolis, Howard; McCabe, Patrick P.

    1988-01-01

    Describes the learning specialist's role in implementing corrective or remedial programs. Notes that resistance to programs often develops when cooperating classroom teachers are asked to change their teaching styles or strategies. Presents eight guidelines for establishing trust and reducing or eliminating resistance. (MM)

  5. Some aspects of remediation of contaminated soils

    NASA Astrophysics Data System (ADS)

    Bech, Jaume; Korobova, Elena; Abreu, Manuela; Bini, Claudio; Chon, Hyo-Taek; Pérez-Sirvent, Carmen; Roca, Núria

    2014-05-01

    Soils are essential components of the environment, a limited precious and fragile resource, the quality of which should be preserved. The concentration, chemical form and distribution of potential harmful elements in soils depends on parent rocks, weathering, soil type and soil use. However, their concentration can be altered by mismanagement of industrial and mining activities, energy generation, traffic increase, overuse of agrochemicals, sewage sludge and waste disposal, causing contamination, environmental problems and health concerns. Heavy metals, some metalloids and radionuclides are persistent in the environment. This persistence hampers the cost/efficiency of remediation technologies. The choice of the most appropriate soil remediation techniques depends of many factors and essentially of the specific site. This contribution aims to offer an overview of the main remediation methods in contaminated soils. There are two main groups of technologies: the first group dealing with containment and confinement, minimizing their toxicity, mobility and bioavailability. Containment measures include covering, sealing, encapsulation and immobilization and stabilization. The second group, remediation with decontamination, is based on the remotion, clean up and/or destruction of contaminants. This group includes mechanical procedures, physical separations, chemical technologies such as soil washing with leaching or precipitation of harmful elements, soil flushing, thermal treatments and electrokinetic technologies. There are also two approaches of biological nature: bioremediation and phytoremediation. Case studies from Chile, Ecuador, Italy, Korea, Peru, Portugal, Russia and Spain, will be discussed in accordance with the time available.

  6. Vocabulary Instruction in a Remedial Setting

    ERIC Educational Resources Information Center

    Fisher, Peter J.; Blachowicz, Camille L. Z.

    2005-01-01

    Six evidence-based principles for remedial vocabulary instruction are developed and described. Implementation of the principles was undertaken by twenty tutors, all of who were experienced classroom teachers, in a university clinical reading program that used one-to-one instruction. Successful strategies and the tutor's reactions are described…

  7. Acid mine drainage prediction and remediation

    SciTech Connect

    Robb, G.; Robinson, J.

    1996-12-31

    The use of constructed wetlands for treatment of acid mine drainage is discussed in the article. Drainage characteristics and mine water flow rate are identified as important predictors of remediation success. Aerobic and anaerobic chemical reaction processes are described. Problems and potential uses of wetlands are briefly described.

  8. Tank waste remediation system program plan

    SciTech Connect

    Powell, R.W.

    1998-01-05

    This program plan establishes the framework for conduct of the Tank Waste Remediation System (TWRS) Project. The plan focuses on the TWRS Retrieval and Disposal Mission and is specifically intended to support the DOE mid-1998 Readiness to Proceed with Privatized Waste Treatment evaluation for establishing firm contracts for waste immobilization.

  9. GENERAL METHODS FOR REMEDIAL PERFORMANCE EVALUATIONS

    EPA Science Inventory

    This document was developed by an EPA-funded project to explain technical considerations and principles necessary to evaluated the performance of ground-water contamination remediations at hazardous waste sites. This is neither a "cookbook", nor an encyclopedia of recommended fi...

  10. Optimizing multiphase aquifer remediation using ITOUGH2

    SciTech Connect

    Finsterle, S.; Pruess, K.

    1994-06-01

    The T2VOC computer model for simulating the transport of organic chemical contaminants in non-isothermal multiphase systems has been coupled to the ITOUGH2 code which solves parameter optimization problems. This allows one to use nonlinear programming and simulated annealing techniques to solve groundwater management problems, i.e. the optimization of multiphase aquifer remediation. This report contains three illustrative examples to demonstrate the optimization of remediation operations by means of simulation-minimization techniques. The code iteratively determines an optimal remediation strategy (e.g. pumping schedule) which minimizes, for instance, pumping and energy costs, the time for cleanup, and residual contamination. While minimizing the objective function is straightforward, the relative weighting of different performance measures--e.g. pumping costs versus cleanup time versus residual contaminant content--is subject to a management decision process. The intended audience of this report is someone who is familiar with numerical modeling of multiphase flow of contaminants, and who might actually use T2VOC in conjunction with ITOUGH2 to optimize the design of aquifer remediation operations.

  11. Nonverbal Learning Disabilities and Remedial Interventions.

    ERIC Educational Resources Information Center

    Foss, Jean M.

    1991-01-01

    Adolescents with nonverbal learning disabilities are characterized by poor fine graphomotor skills, poor organization, and inaccurate perceptions of social situations. Effective remedial interventions include training students in study skills, writing skills, organizational skills, and social skills, and in ways to plan, risk, and act on their own…

  12. Remediation technologies for heavy metal contaminated groundwater.

    PubMed

    Hashim, M A; Mukhopadhyay, Soumyadeep; Sahu, Jaya Narayan; Sengupta, Bhaskar

    2011-10-01

    The contamination of groundwater by heavy metal, originating either from natural soil sources or from anthropogenic sources is a matter of utmost concern to the public health. Remediation of contaminated groundwater is of highest priority since billions of people all over the world use it for drinking purpose. In this paper, thirty five approaches for groundwater treatment have been reviewed and classified under three large categories viz chemical, biochemical/biological/biosorption and physico-chemical treatment processes. Comparison tables have been provided at the end of each process for a better understanding of each category. Selection of a suitable technology for contamination remediation at a particular site is one of the most challenging job due to extremely complex soil chemistry and aquifer characteristics and no thumb-rule can be suggested regarding this issue. In the past decade, iron based technologies, microbial remediation, biological sulphate reduction and various adsorbents played versatile and efficient remediation roles. Keeping the sustainability issues and environmental ethics in mind, the technologies encompassing natural chemistry, bioremediation and biosorption are recommended to be adopted in appropriate cases. In many places, two or more techniques can work synergistically for better results. Processes such as chelate extraction and chemical soil washings are advisable only for recovery of valuable metals in highly contaminated industrial sites depending on economical feasibility.

  13. Filling Empty Pockets: Remedial Readers Make Meaning.

    ERIC Educational Resources Information Center

    Dionisio, Marie

    1989-01-01

    Describes the effect on junior high remedial readers of a reading workshop applying principles from Nancie Atwell's "In the Middle," including self-selection of adolescent literature books, silent reading, dialogue journal writing, and sharing work with others. Augments the workshop with "mini-lessons" on elements of reading…

  14. 24 CFR 81.46 - Remedial actions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... States Court, a HUD Administrative Law Judge, or the Secretary. (2) Following a final determination... Secretary will also, without limitation, consider the following: (i) The gravity of the violation; (ii) The... Office of Administrative Law Judges. (2) Where a lender does not timely request a hearing on a remedial...

  15. The Call for Colloquialisms: Origins and Remedies

    ERIC Educational Resources Information Center

    Salah, Reem

    2015-01-01

    This research aims at discovering the gap between Standard Arabic and the current spoken varieties of Arabic due to social, educational, political, colonial, and media factors. The researcher will try to also analyse the causes of the current gap and suggest remedies. Standard Arabic (SA) or FuSha (the Arabic term for "standard Arabic")…

  16. Screening of fungi for soil remediation potential

    Treesearch

    Richard T. Lamar; Laura M. Main; Diane M. Dietrich; John A. Glaser

    1999-01-01

    The purpose of the present investigation was to determine if physiological and/or biochemical factors such as growth rate, tolerance to and ability to degrade PCP or creosote have use for predicting the potential bioremediation performance of fungi. Because we have focused the initial development of a fungal-based soil remediation technology on PCP- and/or creosote-...

  17. Community College Presidents' Attitudes toward Remedial Education

    ERIC Educational Resources Information Center

    Mazzarelli, Carla L.

    2010-01-01

    Community colleges are the primary providers of remedial/developmental education. The cost, an ongoing values debate and varied institutional ideologies have led to a standard array of programs and services whose administration and efficacy vary from institution to institution. While leadership can be exercised at all levels of an institution, the…

  18. The Need for Unexploded Ordnance Remediation Technology.

    DTIC Science & Technology

    1994-10-01

    global environmental change research; and • identify private sector technologies that are useful for Department of Defense and Department of Energy...prevention, global environmental change , and energy conservation/renewable resources. Developing more efficient and effective means for the remediation

  19. Proceedings: Conference on Compensatory/Remedial Education.

    ERIC Educational Resources Information Center

    Fea, Henry R., Ed.; And Others

    This document presents the papers and discussions from the Conference on Compensatory/Remedial Education. The contents include: "Institutional Programs for the Low Achievers" by Joan G. Roloff; "Communication in Compensatory Education" by Henry R. Fea; "Seminar: Special Programs for Minorities" by Constance Acholonu; "Seminar: Special Programs for…

  20. Community College Presidents' Attitudes toward Remedial Education

    ERIC Educational Resources Information Center

    Mazzarelli, Carla L.

    2010-01-01

    Community colleges are the primary providers of remedial/developmental education. The cost, an ongoing values debate and varied institutional ideologies have led to a standard array of programs and services whose administration and efficacy vary from institution to institution. While leadership can be exercised at all levels of an institution, the…

  1. 10 CFR 431.386 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Remedies. 431.386 Section 431.386 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT... not comply with an applicable energy conservation standard: (a) The Secretary will notify...

  2. 10 CFR 431.386 - Remedies.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Remedies. 431.386 Section 431.386 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT... not comply with an applicable energy conservation standard: (a) The Secretary will notify...

  3. COSTS TO REMEDIATE MTBE-CONTAMINATED SITES

    EPA Science Inventory

    The extensive contamination of methyl tert-butyl ether (MTBE) in ground water has introduced concerns about the increased cost of remediation of MTBE releases compared to sites with BTEX only contamination. In an attempt to evaluate these costs, cost information for 311 sites wa...

  4. Contextualized Learning May Redefine Remedial Education

    ERIC Educational Resources Information Center

    Hamilton, David W.

    2013-01-01

    Paul Fain (2011), cited community college leaders who overwhelmingly voted at the Reimagining Community Colleges invitation-only conference held September 23, 2011 in New York City, for team teaching and other innovations as the most important fix for remedial education in community colleges. Team teaching is not common in postsecondary education…

  5. Regulatory Aspects Of Implementing Electrokinetic Remediation

    EPA Science Inventory

    A better understanding of the environmental impact of hazardous waste management practices has led to new environmental laws and a comprehensive regulatory program. This program is designed to address remediation of past waste management practices and to ensure that the hazardou...

  6. 2015 Legislative Report on Remedial Education

    ERIC Educational Resources Information Center

    Colorado Department of Higher Education, 2016

    2016-01-01

    This report was prepared by the Colorado Department of Higher Education (DHE) pursuant to 23-1-113.3 C.R.S. The information in this report is presented to inform the ongoing dialogue regarding preparation for college and the effects of remedial education or developmental education in Colorado. This report documents data gathered by the Colorado…

  7. 34 CFR 682.413 - Remedial actions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Remedial actions. 682.413 Section 682.413 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Administration of the Federal...

  8. 34 CFR 682.609 - Remedial actions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 34 Education 4 2013-07-01 2013-07-01 false Remedial actions. 682.609 Section 682.609 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Requirements, Standards,...

  9. 34 CFR 682.609 - Remedial actions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 34 Education 4 2014-07-01 2014-07-01 false Remedial actions. 682.609 Section 682.609 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Requirements, Standards,...

  10. 34 CFR 682.609 - Remedial actions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 34 Education 4 2012-07-01 2012-07-01 false Remedial actions. 682.609 Section 682.609 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Requirements, Standards,...

  11. 34 CFR 682.609 - Remedial actions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 34 Education 4 2011-07-01 2011-07-01 false Remedial actions. 682.609 Section 682.609 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION (CONTINUED) FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Requirements, Standards,...

  12. Teaching Critical Thought Skills to Remedial Students.

    ERIC Educational Resources Information Center

    Chaffee, John

    Based on the premise that traditional skill deficiencies are symptoms of a fundamental inability to reason, to use concepts, and to solve problems, a three-part remedial course was designed by the Philosophy Department at LaGuardia Community College (New York) to teach critical thinking as a basic learning skill. Part I of the course explores the…

  13. ENHANCED REMEDIATION DEMONSTRATIONS AT HILL AFB: INTRODUCTION

    EPA Science Inventory

    Nine enhanced aquifer remediation technologies were demonstrated side-by-side at a Hill Air Force Base Chemical Disposal Pit/Fire Training Area site. The demonstrations were performed inside 3 x 5 m cells isolated from the surrounding shallow aquifer by steel piling. The site w...

  14. Chlorinated ethene source remediation: lessons learned.

    PubMed

    Stroo, Hans F; Leeson, Andrea; Marqusee, Jeffrey A; Johnson, Paul C; Ward, C Herb; Kavanaugh, Michael C; Sale, Tom C; Newell, Charles J; Pennell, Kurt D; Lebrón, Carmen A; Unger, Marvin

    2012-06-19

    Chlorinated solvents such as trichloroethene (TCE) and tetrachloroethene (PCE) are widespread groundwater contaminants often released as dense nonaqueous phase liquids (DNAPLs). These contaminants are difficult to remediate, particularly their source zones. This review summarizes the progress made in improving DNAPL source zone remediation over the past decade, and is structured to highlight the important practical lessons learned for improving DNAPL source zone remediation. Experience has shown that complete restoration is rare, and alternative metrics such as mass discharge are often useful for assessing the performance of partial restoration efforts. Experience also has shown that different technologies are needed for different times and locations, and that deliberately combining technologies may improve overall remedy performance. Several injection-based technologies are capable of removing a large fraction of the total contaminant mass, and reducing groundwater concentrations and mass discharge by 1 to 2 orders of magnitude. Thermal treatment can remove even more mass, but even these technologies generally leave some contamination in place. Research on better delivery techniques and characterization technologies will likely improve treatment, but managers should anticipate that source treatment will leave some contamination in place that will require future management.

  15. 43 CFR 4770.3 - Administrative remedies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... FREE-ROAMING HORSES AND BURROS Prohibited Acts, Administrative Remedies, and Penalties § 4770.3... issuance or on a date established in the decision so as to allow repossession of wild horses or burros from... this title, the authorized officer may provide that decisions to remove wild horses or burros...

  16. 49 CFR 228.333 - Remedial action.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... QUARTERS Safety and Health Requirements for Camp Cars Provided by Railroads as Sleeping Quarters § 228.333 Remedial action. A railroad shall, within 24 hours after receiving a good faith notice from a camp car occupant or an employee labor organization representing camp car occupants or notice from a Federal...

  17. 49 CFR 228.333 - Remedial action.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... QUARTERS Safety and Health Requirements for Camp Cars Provided by Railroads as Sleeping Quarters § 228.333 Remedial action. A railroad shall, within 24 hours after receiving a good faith notice from a camp car occupant or an employee labor organization representing camp car occupants or notice from a Federal...

  18. Incorporation of GSR into Army Environmental Remediation

    DTIC Science & Technology

    2011-05-12

    received. 0 10 20 30 40 Groundw ater Surface Water Soil Sediment Indoor Air Media Where GSR Was Used To ta l S ite s 0 10 20 30 Ch lor. So lve nts CW...or sustainable remedies are reflected in this list – Passive Treatment Wells (33 sites) – Composting (32 sites) – Landfarming (12 sites) – Alternate

  19. GENERAL METHODS FOR REMEDIAL PERFORMANCE EVALUATIONS

    EPA Science Inventory

    This document was developed by an EPA-funded project to explain technical considerations and principles necessary to evaluated the performance of ground-water contamination remediations at hazardous waste sites. This is neither a "cookbook", nor an encyclopedia of recommended fi...

  20. The running athlete: Roentgenograms and remedies

    SciTech Connect

    Pavlov, H.; Torg, J.S.

    1986-01-01

    The authors have put together an atlas of radiographs of almost every conceivable running injury to the foot, ankle, leg, knee, femur, groin, and spine. Text material is limited to legends which describe the figures, and the remedies listed are brief. The text indicates conservative versus surgical treatment and, in some instances, recommends a surgical procedure.

  1. 48 CFR 903.970 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Remedies. 903.970 Section 903.970 Federal Acquisition Regulations System DEPARTMENT OF ENERGY GENERAL IMPROPER BUSINESS..., participation or refusal are required to provide relief in accordance with decisions issued under 10 CFR part...

  2. 10 CFR 431.386 - Remedies.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Remedies. 431.386 Section 431.386 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT... covered equipment does not comply with an applicable energy conservation standard: (a) The Secretary will...

  3. 10 CFR 431.386 - Remedies.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Remedies. 431.386 Section 431.386 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT... covered equipment does not comply with an applicable energy conservation standard: (a) The Secretary will...

  4. 10 CFR 431.386 - Remedies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Remedies. 431.386 Section 431.386 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT... covered equipment does not comply with an applicable energy conservation standard: (a) The Secretary will...

  5. REMEDIATION OF CONTAMINATED SOILS BY SOLVENT FLUSHING

    EPA Science Inventory

    Solvent flushing is a potential technique for remediating a waste disposal/spill site contaminated with organic chemicals. This technique involves the injection of a solvent mixture (e.g., water plus alcohols) that enhances contaminant solubility, reduces the retardation factor, ...

  6. 40 CFR 85.1803 - Remedial Plan.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... supply of parts will be available to perform the repair under the remedial plan including the date by which an adequate supply of parts will be available to initiate the repair campaign, the percentage of... shipped to initiate the campaign, and the method to be used to assure the supply remains both adequate and...

  7. Acoustically enhanced remediation, Phase 2: Technology scaling

    SciTech Connect

    Iovenitti, J.L.; Hill, D.G.; Rynne, T.M.; Spadaro, J.F.; Hutchinson, W.; Illangasakere, T.

    1996-12-31

    Weiss Associates is conducting the following three phase program investigating the in-situ application of acoustically enhanced remediation (AER) of contaminated unconsolidated soil and ground water under both saturated and unsaturated conditions: Phase I-- laboratory scale parametric investigation; Phase II--technology Scaling; and Phase III--large scale field tests. AER addresses the need for NAPL (either lighter or denser than water: LNAPL or DNAPL, respectively) in high and low permeability sediments, and the remediation of other types of subsurface contaminants (e.g., metals, radionuclides) in low permeability soils. This program has been placed in the U.S. Department of Energy`s (DOE`s) DNAPL product. Phase I indicated that AER could be used to effectively remediate NAPL in high permeability soil, and that removal of NAPL from low permeability soil could be increased since the water flux through these soils was significantly increased. Phase II, Technology Scaling, the subject of this paper, focused on (1) evaluating the characteristics of an AER field deployment system, (2) developing DNAPL flow and transport performance data under acoustic excitation, (3) predicting the effect of acoustic remediation in three-dimensional unconsolidated hydrogeologic conditions, (4) conducting an engineering analysis of acoustical sources, and (5) identifying candidate field site(s) for large-scale field testing of the technology.

  8. Ten Years of Progress in Remedial Reading.

    ERIC Educational Resources Information Center

    Harris, Albert J.

    This paper offers an historical overview of remedial reading from 1966 through 1975. Focusing on just a few of the most rapidly changing aspects which stand out as having been of major significance, topics which are discussed include governmental intervention and support, the impact of the learning disabilities movement, the difficulties of…

  9. Probabilistic risk analysis of groundwater remediation strategies

    NASA Astrophysics Data System (ADS)

    Bolster, D.; Barahona, M.; Dentz, M.; Fernandez-Garcia, D.; Sanchez-Vila, X.; Trinchero, P.; Valhondo, C.; Tartakovsky, D. M.

    2009-06-01

    Heterogeneity of subsurface environments and insufficient site characterization are some of the reasons why decisions about groundwater exploitation and remediation have to be made under uncertainty. A typical decision maker chooses between several alternative remediation strategies by balancing their respective costs with the probability of their success or failure. We conduct a probabilistic risk assessment (PRA) to determine the likelihood of the success of a permeable reactive barrier, one of the leading approaches to groundwater remediation. While PRA is used extensively in many engineering fields, its applications in hydrogeology are scarce. This is because rigorous PRA requires one to quantify structural and parametric uncertainties inherent in predictions of subsurface flow and transport. We demonstrate how PRA can facilitate a comprehensive uncertainty quantification for complex subsurface phenomena by identifying key transport processes contributing to a barrier's failure, each of which is amenable to uncertainty analysis. Probability of failure of a remediation strategy is computed by combining independent and conditional probabilities of failure of each process. Individual probabilities can be evaluated either analytically or numerically or, barring both, can be inferred from expert opinion.

  10. California Community Colleges as Providers of Remediation.

    ERIC Educational Resources Information Center

    Cox, Mary Ann

    Described in this paper is a proposal concerning the responsibility of the California community colleges in providing remediation services and programs. The first part of the paper concerns the proposal itself. After a brief statement of the major issues under consideration, the conditions under which student success can be ensured in open access…

  11. Regulatory Aspects Of Implementing Electrokinetic Remediation

    EPA Science Inventory

    A better understanding of the environmental impact of hazardous waste management practices has led to new environmental laws and a comprehensive regulatory program. This program is designed to address remediation of past waste management practices and to ensure that the hazardou...

  12. 36 CFR 223.198 - Administrative remedies.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 2 2013-07-01 2013-07-01 false Administrative remedies. 223.198 Section 223.198 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL...

  13. 36 CFR 223.198 - Administrative remedies.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 2 2014-07-01 2014-07-01 false Administrative remedies. 223.198 Section 223.198 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL...

  14. 36 CFR 223.198 - Administrative remedies.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 2 2011-07-01 2011-07-01 false Administrative remedies. 223.198 Section 223.198 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL...

  15. 36 CFR 223.198 - Administrative remedies.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 2 2012-07-01 2012-07-01 false Administrative remedies. 223.198 Section 223.198 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL...

  16. Microbial Remediation of Metals in Soils

    NASA Astrophysics Data System (ADS)

    Hietala, K. A.; Roane, T. M.

    Of metal-contaminated systems, metal-contaminated soils present the greatest challenge to remediation efforts because of the structural, physical, chemical, and biological heterogeneities encountered in soils. One of the confounding issues surrounding metal remediation is that metals can be readily re-mobilized, requiring constant monitoring of metal toxicity in sites where metals are not removed. Excessive metal content in soils can impact air, surface water, and groundwater quality. However, our understanding of how metals affect organisms, from bacteria to plants and animals, and our ability to negate the toxicity of metals are in their infancies. The ubiquity of metal contamination in developing and industrialized areas of the world make remediation of soils via removal, containment, and/or detoxification of metals a primary concern. Recent examples of the health and environmental consequences of metal contamination include arsenic in drinking water (Wang and Wai 2004), mercury levels in fish (Jewett and Duffy 2007), and metal uptake by agricultural crops (Howe et al. 2005). The goal of this chapter is to summarize the traditional approaches and recent developments using microorganisms and microbial products to address metal toxicity and remediation.

  17. 43 CFR 4770.3 - Administrative remedies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 2 2012-10-01 2012-10-01 false Administrative remedies. 4770.3 Section 4770.3 Public Lands: Interior Regulations Relating to Public Lands (Continued) BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR RANGE MANAGEMENT (4000) PROTECTION, MANAGEMENT, AND CONTROL OF WILD...

  18. ENHANCED REMEDIATION DEMONSTRATIONS AT HILL AFB: INTRODUCTION

    EPA Science Inventory

    Nine enhanced aquifer remediation technologies were demonstrated side-by-side at a Hill Air Force Base Chemical Disposal Pit/Fire Training Area site. The demonstrations were performed inside 3 x 5 m cells isolated from the surrounding shallow aquifer by steel piling. The site w...

  19. 42 CFR 50.606 - Remedies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... clinical research whose purpose is to evaluate the safety or effectiveness of a drug, medical device, or... Promoting Objectivity in Research § 50.606 Remedies. (a) If the failure of an Investigator to comply with an... appears to have biased the design, conduct, or reporting of the PHS-funded research, the Institution...

  20. 42 CFR 50.606 - Remedies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... clinical research whose purpose is to evaluate the safety or effectiveness of a drug, medical device, or... Promoting Objectivity in Research § 50.606 Remedies. (a) If the failure of an Investigator to comply with an... appears to have biased the design, conduct, or reporting of the PHS-funded research, the Institution...

  1. 42 CFR 50.606 - Remedies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... clinical research whose purpose is to evaluate the safety or effectiveness of a drug, medical device, or... Promoting Objectivity in Research § 50.606 Remedies. (a) If the failure of an Investigator to comply with an... appears to have biased the design, conduct, or reporting of the PHS-funded research, the Institution...

  2. 42 CFR 50.606 - Remedies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... clinical research whose purpose is to evaluate the safety or effectiveness of a drug, medical device, or... Promoting Objectivity in Research § 50.606 Remedies. (a) If the failure of an Investigator to comply with an... appears to have biased the design, conduct, or reporting of the PHS-funded research, the Institution...

  3. 5 CFR 1208.25 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Remedies. 1208.25 Section 1208.25 Administrative Personnel MERIT SYSTEMS PROTECTION BOARD ORGANIZATION AND PROCEDURES PRACTICES AND PROCEDURES FOR... paragraph (a) of this section, the Board will order payment of reasonable attorney fees, expert witness fees...

  4. 5 CFR 1208.15 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Remedies. 1208.15 Section 1208.15 Administrative Personnel MERIT SYSTEMS PROTECTION BOARD ORGANIZATION AND PROCEDURES PRACTICES AND PROCEDURES FOR..., the Board has discretion to order payment of reasonable attorney fees, expert witness fees, and other...

  5. 48 CFR 3.906 - Remedies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Remedies. 3.906 Section 3.906 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION GENERAL IMPROPER BUSINESS... (including attorneys' fees and expert witnesses' fees) that were reasonably incurred by the complainant for...

  6. 36 CFR 223.198 - Administrative remedies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 2 2010-07-01 2010-07-01 false Administrative remedies. 223.198 Section 223.198 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER The Forest Resources Conservation and Shortage Relief...

  7. Comparing Alternative Algebraic Modalities for Remedial Students.

    ERIC Educational Resources Information Center

    McClendon, Marie; McArdle, Michele

    This paper reports that the student population enrolled in remedial mathematics is rapidly increasing, while funding for these classes in Florida is declining. The Math Department at the Winter Park Campus (WPC) of Florida's Valencia Community College (VCC) has developed a curriculum that offers a variety of instructional formats to its remedial…

  8. Developing a Remedial Keller-Plan Course.

    ERIC Educational Resources Information Center

    Allen, Peter S.

    1978-01-01

    A remedial self-study course in physics has been successfully developed at Nottingham University through repeated evaluations and modifications in such areas as testing and course organization. The development of a self-instructional center, and the use of film and videotape packages, have also been successful. (JMD)

  9. REMEDIATION OF CONTAMINATED SOILS BY SOLVENT FLUSHING

    EPA Science Inventory

    Solvent flushing is a potential technique for remediating a waste disposal/spill site contaminated with organic chemicals. This technique involves the injection of a solvent mixture (e.g., water plus alcohols) that enhances contaminant solubility, reduces the retardation factor, ...

  10. Remediation processes for heavy metals contaminated soils

    SciTech Connect

    Torma, G.A.; Torma, A.E.; Hsu, Pei-Cheng

    1996-12-31

    This paper provides information on selected technologies available for remediation of metal contaminated soils and industrial effluent solutions. Because some of the industrial sites are contaminated with organics (solvents, gasolines and oils), an effort has been made to introduce the most frequently used cost-effective cleanup methods, such as {open_quotes}bioventing{close_quotes} and {open_quotes}composting.{close_quotes} The microorganisms involved in these processes are capable of degrading organic soil contaminants to environmentally harmless compounds: water and carbon dioxide. Heavy metals and radionuclides contaminated mining and industrial sites can be remediated by using adapted heap and dump leaching technologies, which can be chemical in nature or bio-assisted. The importance of volume reduction by physical separation is discussed. A special attention is devoted to the remediation of soils by leaching (soil washing) to remove heavy metal contaminants, such as chromium, lead, nickel and cadmium. Furthermore, the applicability of biosorption technology in the remediation of heavy metals and radionuclides contaminated industrial waste waters and acidic mining effluent solutions was indicated. 60 refs., 9 figs.

  11. 34 CFR 682.609 - Remedial actions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Remedial actions. 682.609 Section 682.609 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION FEDERAL FAMILY EDUCATION LOAN (FFEL) PROGRAM Requirements, Standards, and...

  12. 34 CFR 685.308 - Remedial actions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Remedial actions. 685.308 Section 685.308 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION WILLIAM D. FORD FEDERAL DIRECT LOAN PROGRAM Requirements, Standards, and Payments...

  13. Dairy livestock methane remediation and global warming.

    PubMed

    Nusbaum, Neil J

    2010-10-01

    One of the major greenhouse gases is the methane released from ruminants. Greenhouse gas emissions in the agricultural portion of the economy may benefit from biologically based remediation strategies, including potential use of probiotics in animal husbandry. A broad range of disciplines (including climatologists, microbiologists, biochemists, physical chemists, agricultural economists) can assist in biological strategies to reduce agricultural methane emissions.

  14. Remediation System Evaluation, Ellis Property Superfund Site

    EPA Pesticide Factsheets

    The Ellis Property Superfund Site is located in a rural area of Burlington County, New Jersey. Most ofthe land at the site has not been developed. However, there is a building in a fenced area that is used tohouse the remedial system..

  15. 12 CFR 3.14 - Remedies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY MINIMUM CAPITAL RATIOS; ISSUANCE OF DIRECTIVES Enforcement § 3.14 Remedies. A bank that does not have or maintain the minimum capital ratios applicable to it... application, or a bank that has failed to submit or comply with an acceptable plan to attain those...

  16. 12 CFR 3.14 - Remedies.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY MINIMUM CAPITAL RATIOS; ISSUANCE OF DIRECTIVES Enforcement § 3.14 Remedies. A bank that does not have or maintain the minimum capital ratios applicable to it... application, or a bank that has failed to submit or comply with an acceptable plan to attain those...

  17. Reusing remediated CCA-treated wood

    Treesearch

    Carol A. Clausen

    2003-01-01

    Options for recycling and reusing chromated-copper-arsenate- (CCA) treated material include dimensional lumber and round wood size reduction, composites, and remediation. Size reduction by remilling, shaving, or resawing CCA-treated wood reduces the volume of landfilled waste material and provides many options for reusing used treated wood. Manufacturing composite...

  18. Usability Studies of a Remedial Multimedia System.

    ERIC Educational Resources Information Center

    Anjaneyulu, K. S. R.; Singer, R. A.; Harding, R.

    1998-01-01

    Describes the formative evaluation of a multimedia computer system that provides remedial support for university students learning concepts concerning the structure and function of the human brain and describes usability studies of the system using the Software Usability Measurement Inventory (SUMI). Analysis of SUMI items and the student…

  19. EVALUATION OF GROUNDWATER EXTRACTION REMEDIES - VOLUME II

    EPA Science Inventory

    This volume was prepared as part of an evaluation of groundwater extraction remedies completed under EPA Contract No. 68-W8-0098. It presents 19 case studies of individual sites where ground-water extraction systems have been implemented. These case studies present site characte...

  20. PROCEEDINGS OF "THE LEAD REMEDIATION EFFECTIVENESS SYMPOSIUM"

    EPA Science Inventory

    A Symposium on Lead Remediation Effectiveness, sponsored by the US Environmental Protection Agency, was held at Coeur d'Alene, Idaho, USA from 22-25 May, 2000. International participants from various levels of government, educational institutions, industry, and community represen...