Semiannual Report: Oct 1, 2004 - Mar 31, 2005

EPA Pesticide Factsheets

Semiannual Report #EPA-350-R-05-002, April, 2005. During this semiannual reporting period, two of our more important activities focused on the efforts of the EPA to make air safe and healthy to breathe, and to help improve homeland security.

EVALUATING TREATMENT TECHNOLOGIES - QA APPROACHES IN THE USA AND GERMANY

EPA Science Inventory

The US EPA and the German Federal Ministry of Education and Research entered into a Bilateral Agreement in 1990 to gain a better understanding of each country's efforts in developing and demonstrating remedial technologies. Under Phase II of the Agreement, SITe Program quality ma...

SITE-SPECIFIC MANAGEMENT APPROACHES AND REDEVELOPMENT TOOLS (SMART) FOR A PRESENTATION ON OCTOBER 2003.

EPA Science Inventory

The United States Environmental Protection Agency (EPA) and the German Federal Ministry of Education and Research (BMBF) created a Bilateral Working Group in 1990 to gain a better understanding of each country's efforts in developing and demonstrating remedial technologies (Phase...

Notification: EPA's Preparedness and Response Efforts to the 2017 Hurricanes in EPA Regions 2, 4 and 6

EPA Pesticide Factsheets

Project #OPE-FY18-0005, December 13, 2017. The EPA OIG plans to begin preliminary research on the EPA’s preparedness and response efforts to the 2017 hurricanes that impacted EPA Regions 2, 4 and 6.

The ToxCast Chemical Landscape - Paving the Road to 21st ...

EPA Pesticide Factsheets

The ToxCast high-throughput screening (HTS) program within the U.S. Environmental Protection Agency (EPA) was launched in 2007. Phase I of the program screened 310 chemicals, mostly pesticides, across hundreds of ToxCast assay endpoints. In Phase II, the ToxCast library was expanded to 1878 chemicals, culminating in public release of screening data at the end of 2013. Concurrently, a larger EPA library of 3726 chemicals (including the Phase II chemicals) was undergoing screening in the cross-federal agency Tox21 HTS project. Four years later, Phase III of EPA’s ToxCast program is actively screening a diverse library consisting of more than 3800 chemicals, 96% of which are also undergoing Tox21 screening. The majority of ToxCast studies, to date, have focused on using HTS results to build biologically based models for predicting in vivo toxicity endpoints. The focus of the present article, in contrast, is on the EPA chemical library underpinning these efforts. A history of the phased construction of EPA’s ToxCast library is presented, considering factors influencing chemical selection as well as the various quality measures implemented. Next, Chemical Abstracts Service Registry Numbers (CASRN), which were used to compile initial chemical nominations for ToxCast testing, are used to assess overlaps of the current ToxCast library with important toxicity, regulatory, and exposure inventories. Lastly, ToxCast chemicals are described in terms of generaliz

Does More Federal Environmental Funding Increase or Decrease States' Efforts?

ERIC Educational Resources Information Center

Clark, Benjamin Y.; Whitford, Andrew B.

2011-01-01

We examine the flow of federal grants-in-aid from the U.S. Environmental Protection Agency (EPA) to the states. We simultaneously model two dependent variables (the flow of EPA funds, and state environmental and natural resource budgets) to identify the independent roles of state political institutions, political preferences, economic and…

BIOREACTOR DESIGN - OUTER LOOP LANDFILL, LOUISVILLE, KY

EPA Science Inventory

Bioreactor field demonstration projects are underway at the Outer Loop Landfill in Louisville, KY, USA. The research effort is a cooperative research effort between US EPA and Waste Management Inc. Two primary kinds of municipal waste bioreactors are under study at this site. ...

Green Roof Research through EPA's Regional Applied Research Effort

EPA Science Inventory

ABSTRACT The U.S. Environmental Protection Agency’s (EPA) Regional Applied Research Effort (RARE) allows the Regions of the EPA to choose research projects to be performed in partnership with EPA’s Office of Research and Development (ORD). Over the last decade, several green roo...

Green Roof Research through EPA's Regional Applied Research Effort - slides

EPA Science Inventory

The U.S. Environmental Protection Agency’s (EPA) Regional Applied Research Effort (RARE) allows the Regions of the EPA to choose research projects to be performed in partnership with EPA’s Office of Research and Development (ORD). Over the last decade, several green roof projects...

Advanced technology for reducing aircraft engine pollution

NASA Technical Reports Server (NTRS)

Jones, R. E.

1973-01-01

The proposed EPA regulations covering emissions of gas turbine engines will require extensive combustor development. The NASA is working to develop technology to meet these goals through a wide variety of combustor research programs conducted in-house, by contract, and by university grant. In-house efforts using the swirl-can modular combustor have demonstrated sizable reduction in NO emission levels. Testing to reduce idle pollutants has included the modification of duplex fuel nozzles to air-assisted nozzles and an exploration of the potential improvements possible with combustors using fuel staging and variable geometry. The Experimental Clean Combustor Program, a large contracted effort, is devoted to the testing and development of combustor concepts designed to achieve a large reduction in the levels of all emissions. This effort is planned to be conducted in three phases with the final phase to be an engine demonstration of the best reduced emission concepts.

SYNTHESIS OF THE RURAL MODEL REVIEWS

EPA Science Inventory

The Environmental Protection Agency has undertaken an independent review of eight rural diffusion models, two of which were developed by the EPA; the remaining six were submitted to the EPA for approval by outside agencies and consulting firms. In the first phase of the review pr...

The National LUST Cleanup Backlog: A Study of Opportunities

EPA Pesticide Factsheets

To understand the makeup of UST releases remaining and why the pace of cleanups is slowing, EPA undertook a two-phase, data-driven analysis of the cleanups remaining as of 2006 (Phase 1) and 2009 (Phase 2).

EVALUATION OF SOIL WASHING TECHNOLOGY: RESULTS OF BENCH SCALE EXPERIMENTS ON PETROLEUM FUELS CONTAMINATED SOILS - EPA/600/S2-91/023

EPA Science Inventory

The U.S. Environmental Protection Agency (EPA) through its Risk Reduction Engineering Laboratory's Release Control Branch has undertaken research and development efforts to address the problem of leaking underground storage tanks (USTs). Under this effort, EPA is currently eva...

A COMPARISON OF TWO RAPID BIOLOGICAL ASSESSMENT SAMPLING METHODS FOR MACROINVERTEBRATES

EPA Science Inventory

In 2003, the Office of Research and Developments (ORD's) National Exposure Research Laboratory initiated a collaborative research effort with U.S. EPA Region 3 to conduct a study comparing two rapid biological assessment methods for collecting stream macroinvertebrates. One metho...

QA Activities on Two Large RARE Projects at the US EPA, RTP, NC ─ from Fish to Humans

EPA Science Inventory

Two RARE (Regional Applied Research Effort) projects are being managed by Janet Diliberto, Linda Birnbaum, and Thomas Hughes. Janet is the Project Officer, Linda is the science advisor and Thomas is the QA and Records Manager for these two RARE projects. These are high visibili...

ToxCast Chemical Landscape: Paving the Road to 21st Century Toxicology.

PubMed

Richard, Ann M; Judson, Richard S; Houck, Keith A; Grulke, Christopher M; Volarath, Patra; Thillainadarajah, Inthirany; Yang, Chihae; Rathman, James; Martin, Matthew T; Wambaugh, John F; Knudsen, Thomas B; Kancherla, Jayaram; Mansouri, Kamel; Patlewicz, Grace; Williams, Antony J; Little, Stephen B; Crofton, Kevin M; Thomas, Russell S

2016-08-15

The U.S. Environmental Protection Agency's (EPA) ToxCast program is testing a large library of Agency-relevant chemicals using in vitro high-throughput screening (HTS) approaches to support the development of improved toxicity prediction models. Launched in 2007, Phase I of the program screened 310 chemicals, mostly pesticides, across hundreds of ToxCast assay end points. In Phase II, the ToxCast library was expanded to 1878 chemicals, culminating in the public release of screening data at the end of 2013. Subsequent expansion in Phase III has resulted in more than 3800 chemicals actively undergoing ToxCast screening, 96% of which are also being screened in the multi-Agency Tox21 project. The chemical library unpinning these efforts plays a central role in defining the scope and potential application of ToxCast HTS results. The history of the phased construction of EPA's ToxCast library is reviewed, followed by a survey of the library contents from several different vantage points. CAS Registry Numbers are used to assess ToxCast library coverage of important toxicity, regulatory, and exposure inventories. Structure-based representations of ToxCast chemicals are then used to compute physicochemical properties, substructural features, and structural alerts for toxicity and biotransformation. Cheminformatics approaches using these varied representations are applied to defining the boundaries of HTS testability, evaluating chemical diversity, and comparing the ToxCast library to potential target application inventories, such as used in EPA's Endocrine Disruption Screening Program (EDSP). Through several examples, the ToxCast chemical library is demonstrated to provide comprehensive coverage of the knowledge domains and target inventories of potential interest to EPA. Furthermore, the varied representations and approaches presented here define local chemistry domains potentially worthy of further investigation (e.g., not currently covered in the testing library or defined by toxicity "alerts") to strategically support data mining and predictive toxicology modeling moving forward.

Environmental Resilience: Exploring Scientific Concepts for ...

EPA Pesticide Factsheets

Report This report summarizes two Community Environmental Resilience Index workshops held at EPA in May and July of 2014. The workshops explored scientific concepts for building an index of indicators of community environmental resilience to natural or human-caused disasters. The index could be used to support disaster decision-making. Key workshop outcomes include: a working definition of environmental resilience and insight into how it relates to EPA's mission and Strategic Goals, a call for an inventory of EPA resiliency tools, a preliminary list of indicators and CERI structure, identification of next steps for index development, and emergence of a network of collaborators. The report can be used to support EPA's work in resilience under PPD-8, PPD-21, and the national response and disaster recovery frameworks. It can feed into interagency efforts on building community resilience.

Enforcement Action Protects Shoreline

EPA Pesticide Factsheets

Two sections of “living shoreline” along the Lafayette River in Norfolk, Virginia, constructed under an EPA consent agreement with the city, are part of a broader effort to stabilize the banks of a community vulnerable to sea level rise.

RiverSmart Washington Curbing Stormwater Pollution

EPA Pesticide Factsheets

With support from EPA, the District of Columbia Department of Energy and Environment (DOEE) is leading an effort to protect Rock Creek and other waters from stormwater pollution by installing and monitoring green infrastructure in two DC neighborhoods.

RCRA, superfund and EPCRA hotline training module. Introduction to: Solid waste programs updated July 1996

DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

1996-07-01

The module focuses on EPA`s efforts in two areas: municipal and industrial solid waste. The garbage that is managed by the local governments is known as municipal solid waste (MSW). Garbage excluded from hazardous waste regulation but not typically collected by local governments is commonly known as industrial solid waste. This category includes domestic sewage and other wastewater treatment sludge, demolition and construction wastes, agricultural and mining residues, combustion ash, and industrial process wastes.

THE ATLANTA SUPERSITE PROJECT

EPA Science Inventory

The Atlanta Supersites project is the first of two Supersites projects to be established during Phase I of EPA's Supersites Program; Phase 11 is being established through a Request for Assistance. The other initial project is in Fresno, California. The Supersites Program is par...

EPAS: A System that Works

ERIC Educational Resources Information Center

ACT, Inc., 2006

2006-01-01

ACT's Educational Planning and Assessment System (EPAS[R]) is designed to guide and support schools, districts, and states in their efforts to improve students' readiness for life after high school. EPAS provides a longitudinal approach to educational and career planning, assessment, instructional support, and evaluation. EPAS components are…

EPA Alternative Dispute Resolution Contacts

EPA Pesticide Factsheets

The success of EPA's ADR efforts depends on a network of talented and experienced professionals in Headquarters offices and EPA Regions. For Agency-wide ADR information, please contact the Conflict Prevention and Resolution Center.

EPA's Response to NRDC's Public Statement

EPA Pesticide Factsheets

Natural Resource Defense Council made comments about EPA's pesticide program and protection of bees, following a FOIA request regarding clothianidin. NRDC misrepresented EPA efforts to mitigate Colony Collapse Disorder (CCD) and general pollinator decline.

EPA Brownfields Grant Will Assist Meriden, Conn. with Site Clean-up

EPA Pesticide Factsheets

Today, the U.S. Environmental Protection Agency (EPA) announced that Meriden, Conn. is among 144 communities across the United States to receive EPA funding for brownfield site revitalization efforts.

OPERATIONS AND RESEARCH AT THE U.S. EPA INCINERATION RESEARCH FACILITY: ANNUAL REPORT FOR FY94

EPA Science Inventory

Fiscal year 1994 (FY94, October 1, 1993 through September 30,1994) saw the continuation of incineration research testing efforts at the IRF. uring the year, two major pilot-scale programs were completed and a third carried to near-completion, and two bench-scale test programs of ...

Controller Requirements for Uncoupled Aircraft Motion. Volume 2.

DTIC Science & Technology

1984-09-01

allow efficient irplementation of the 6-DOF control capability. Thr effort was divided Into two phases. Phase I consisted of def~nInR exi.ting data on...implementation of the 6-DOF control capability. The effort was divided into two phases. Phase I consisted of defining existing data on the design of cockpit...Vehicles. The propose-] criteria are described in Volume I of this report. S The effort was divided into two phases. Phase I consisted of defining

MONITORING PARTICLES, SOOT, AND PAHS IN A HOME

EPA Science Inventory

The Atlanta Supersites project is the first of two Supersites projects to be established during Phase I of EPA's Supersites Program; Phase II is being established through a Request for Assistance. The other initial project is in Fresno, California. The Supersites Program is par...

Separation techniques for the clean-up of radioactive mixed waste for ICP-AES/ICP-MS analysis

DOE Office of Scientific and Technical Information (OSTI.GOV)

Swafford, A.M.; Keller, J.M.

1993-03-17

Two separation techniques were investigated for the clean-up of typical radioactive mixed waste samples requiring elemental analysis by Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) or Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). These measurements frequently involve regulatory or compliance criteria which include the determination of elements on the EPA Target Analyte List (TAL). These samples usually consist of both an aqueous phase and a solid phase which is mostly an inorganic sludge. Frequently, samples taken from the waste tanks contain high levels of uranium and thorium which can cause spectral interferences in ICP-AES or ICP-MS analysis. The removal of these interferences ismore » necessary to determine the presence of the EPA TAL elements in the sample. Two clean-up methods were studied on simulated aqueous waste samples containing the EPA TAL elements. The first method studied was a classical procedure based upon liquid-liquid extraction using tri-n- octylphosphine oxide (TOPO) dissolved in cyclohexane. The second method investigated was based on more recently developed techniques using extraction chromatography; specifically the use of a commercially available Eichrom TRU[center dot]Spec[trademark] column. Literature on these two methods indicates the efficient removal of uranium and thorium from properly prepared samples and provides considerable qualitative information on the extraction behavior of many other elements. However, there is a lack of quantitative data on the extraction behavior of elements on the EPA Target Analyte List. Experimental studies on these two methods consisted of determining whether any of the analytes were extracted by these methods and the recoveries obtained. Both methods produced similar results; the EPA target analytes were only slightly or not extracted. Advantages and disadvantages of each method were evaluated and found to be comparable.« less

EPA Brownfields Grants Will Assist Massachusetts Communities with Site Assessments and Clean-up

EPA Pesticide Factsheets

Today, the U.S. Environmental Protection Agency (EPA) announced that five Massachusetts communities are among 144 communities across the United States to benefit from EPA funding for brownfield site revitalization efforts.

EPA Brownfields Grants Will Assist Vermont Communities with Site Assessments and Clean-up

EPA Pesticide Factsheets

Today, the U.S. Environmental Protection Agency (EPA) announced that six Vermont communities are among 144 communities across the United States to benefit from EPA funding for brownfield site revitalization efforts.

EPA Brownfields Grants Will Assist Maine Communities with Site Assessments and Clean-up

EPA Pesticide Factsheets

Today, the U.S. Environmental Protection Agency (EPA) announced that six Maine communities are among 144 communities across the United States to benefit from EPA funding for brownfield site revitalization efforts.

OBJECTIVES, DESIGN, AND PRELIMINARY RESULTS FROM THE ATLANTA SUPERSITE PROJECT

EPA Science Inventory

The Atlanta Supersites project is the first of two Supersites projects to be established during Phase I of EPA's Supersites Program; Phase II is being established through a Request for Assistance. The other initial project is in Fresno, California. The Supersite Program is part o...

EPA Science Matters Newsletter: EPA Recovery Champions Help Effort to Save Threatened Owl (Published January 2014)

EPA Pesticide Factsheets

Learn abut HexSim, a program developed by the EPA, that incorporates vast amounts of available data about dwindling wildlife species, such as spotted owls, to create scenarios involving virtual populations

EPA Brownfields Grants Will Assist New Hampshire Communities with Site Assessments and Clean-up

EPA Pesticide Factsheets

Today, the U.S. Environmental Protection Agency (EPA) announced that six N.H. towns are among 144 communities across the United States to benefit from EPA funding for brownfield site revitalization efforts.

EPA Brownfields Grants Will Assist Rhode Island Communities with Site Assessments and Clean-up

EPA Pesticide Factsheets

Today, the U.S. Environmental Protection Agency (EPA) announced that Providence and Woonsocket, R.I. are among 144 communities across the United States to benefit from EPA funding for brownfield site revitalization efforts.

Development of methodologies for identification and quantification of hazardous air pollutants from turbine engine emissions.

PubMed

Anneken, David; Striebich, Richard; DeWitt, Matthew J; Klingshirn, Christopher; Corporan, Edwin

2015-03-01

Aircraft turbine engines are a significant source of particulate matter (PM) and gaseous emissions in the vicinity of airports and military installations. Hazardous air pollutants (HAPs) (e.g., formaldehyde, benzene, naphthalene and other compounds) associated with aircraft emissions are an environmental concern both in flight and at ground level. Therefore, effective sampling, identification, and accurate measurement of these trace species are important to assess their environmental impact. This effort evaluates two established ambient air sampling and analysis methods, U.S. Environmental Protection Agency (EPA) Method TO-11A and National Institute for Occupational Safety and Health (NIOSH) Method 1501, for potential use to quantify HAPs from aircraft turbine engines. The techniques were used to perform analysis of the exhaust from a T63 turboshaft engine, and were examined using certified gas standards transferred through the heated sampling systems used for engine exhaust gaseous emissions measurements. Test results show that the EPA Method TO-11A (for aldehydes) and NIOSH Method 1501 (for semivolatile hydrocarbons) were effective techniques for the sampling and analysis of most HAPs of interest. Both methods showed reasonable extraction efficiencies of HAP species from the sorbent tubes, with the exception of acrolein, styrene, and phenol, which were not well quantified. Formaldehyde measurements using dinitrophenylhydrazine (DNPH) tubes (EPA method TO-11A) were accurate for gas-phase standards, and compared favorably to measurements using gas-phase Fourier-transform infrared (FTIR) spectroscopy. In general, these two standard methodologies proved to be suitable techniques for field measurement of turbine engine HAPs within a reasonable (5-10 minutes) sampling period. Details of the tests, the analysis methods, calibration procedures, and results from the gas standards and T63 engine tested using a conventional JP-8 jet fuel are provided. HAPs from aviation-related sources are important because of their adverse health and environmental impacts in and around airports and flight lines. Simpler, more convenient techniques to measure the important HAPs, especially aldehydes and volatile organic HAPs, are needed to provide information about their occurrence and assist in the development of engines that emit fewer harmful emissions.

EPA ENERGY STAR: Tackling Growth in Home Electronics and Small Appliances

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sanchez, Marla Christine; Brown, Richard; Homan, Gregory

2008-11-17

Over a decade ago, the electricity consumption associated with home electronics and other small appliances emerged onto the global energy policy landscape as one of the fastest growing residential end uses with the opportunity to deliver significant energy savings. As our knowledge of this end use matures, it is essential to step back and evaluate the degree to which energy efficiency programs have successfully realized energy savings and where savings opportunities have been missed.For the past fifteen years, we have quantified energy, utility bill, and carbon savings for US EPA?s ENERGY STAR voluntary product labeling program. In this paper, wemore » present a unique look into the US residential program savings claimed to date for EPA?s ENERGY STAR office equipment, consumer electronics, and other small household appliances as well as EPA?s projected program savings over the next five years. We present a top-level discussion identifying program areas where EPA?s ENERGY STAR efforts have succeeded and program areas where ENERGY STAR efforts did not successfully address underlying market factors, technology issues and/or consumer behavior. We end by presenting the magnitude of ?overlooked? savings.« less

Measurement of Oil and Gas Well Pad Enclosed Combustor Emissions Using Optical Remote Sensing Technologies

EPA Science Inventory

The U.S. EPA Office of Research and Development and U.S. EPA Region 8 are collaborating to investigate the impact of energy production under the EPA’s Regional Applied Research Effort (RARE) program. As part of this effort, a research study was conducted to evaluate technologies...

33 CFR 165.125 - Regulated Navigation Area; EPA Superfund Site, New Bedford Harbor, Massachusetts.

Code of Federal Regulations, 2011 CFR

2011-07-01

... undue risk to environmental remediation efforts. Requests for waivers should be submitted in writing to... vessels or persons engaged in activities associated with remediation efforts in the New Bedford Harbor... advance notice of those activities by the U.S. Environmental Protection Agency (EPA). (c) Waivers. The...

33 CFR 165.125 - Regulated Navigation Area; EPA Superfund Site, New Bedford Harbor, Massachusetts.

Code of Federal Regulations, 2014 CFR

2014-07-01

... undue risk to environmental remediation efforts. Requests for waivers should be submitted in writing to... vessels or persons engaged in activities associated with remediation efforts in the New Bedford Harbor... advance notice of those activities by the U.S. Environmental Protection Agency (EPA). (c) Waivers. The...

33 CFR 165.125 - Regulated Navigation Area; EPA Superfund Site, New Bedford Harbor, Massachusetts.

Code of Federal Regulations, 2013 CFR

2013-07-01

... undue risk to environmental remediation efforts. Requests for waivers should be submitted in writing to... vessels or persons engaged in activities associated with remediation efforts in the New Bedford Harbor... advance notice of those activities by the U.S. Environmental Protection Agency (EPA). (c) Waivers. The...

33 CFR 165.125 - Regulated Navigation Area; EPA Superfund Site, New Bedford Harbor, Massachusetts.

Code of Federal Regulations, 2012 CFR

2012-07-01

... undue risk to environmental remediation efforts. Requests for waivers should be submitted in writing to... vessels or persons engaged in activities associated with remediation efforts in the New Bedford Harbor... advance notice of those activities by the U.S. Environmental Protection Agency (EPA). (c) Waivers. The...

75 FR 76280 - Regulated Navigation Area; Thea Foss and Wheeler-Osgood Waterways EPA Superfund Cleanup Site...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-12-08

.../ Tideflats superfund cleanup remediation efforts. This RNA will prohibit activities that would disturb the.../Tideflats superfund cleanup remediation process in those waters. These caps consist of approximately three... remediation efforts of the U.S. Environmental Protection Agency (EPA) and others in the Thea Foss and Wheeler...

THE DISTRIBUTION, SOLID-PHASE SPECIATION, AND DESORPTION/DISSOLUTION OF AS IN IRON-BASED DRINKING WATER TREATMENT MEDIA 1

EPA Science Inventory

Arsenic concentrations (Total Recoverable As by EPA Method 3051, soluble, Toxicity Characteristic Leaching Procedure extractable) and solid-phase speciation (by X-ray Absorption Near-Edge Spectroscopy-XANES) were assessed as a function of depth through Fe-media beds for two comme...

THE DISTRIBUTION, SOLID-PHASE SPECIATION, AND DESORPTION/DISSOLUTION OF AS IN IRON-BASED TREATMENT MEDIA

EPA Science Inventory

Arsenic concentrations (Total Recoverable As by EPA Method 3051) and solid-phase speciation (by X-ray Absorption Near-Edge Spectroscopy-XANES) were assessed as a function of depth through Fe-media beds for two commercially available products from pilot-scale field tests. These re...

THE DISTRIBUTION, SOLID-PHASE SPECIATION, AND DESORPTION/DISSOLUTION OF AS IN IRON-BASED DRINKING WATER TREATMENT MEDIA - JOURNAL

EPA Science Inventory

Arsenic concentrations (Total Recoverable As by EPA Method 3051, soluble, Toxicity Characteristic Leaching Procedure extractable) and solid-phase speciation (by X-ray Absorption Near-Edge Spectroscopy-XANES) were assessed as a function of depth through Fe-media beds for two comme...

THE DISTRIBUTION AND SOLID-PHASE SPECIATION OF AS IN IRON-BASED TREATMENT MEDIA

EPA Science Inventory

Arsenic concentrations (Total Recoverable As by EPA Method 3051) and solid-phase speciation (by X-ray Absorption Near-Edge Spectroscopy-XANES) were assessed as a function of depth through Fe-media beds for two commercially available products from pilot-scale field tests. These r...

A PREDICTIVE MODEL RELATING PERSONAL PM EXPOSURES WITH FIXED LOCATION OUTDOOR AND MICROENVIRONMENTAL INDOOR CONCENTRATIONS

EPA Science Inventory

The Atlanta Supersites project is the first of two Supersites projects to be established during Phase I of EPA's Supersites Program; Phase II is being established through a Request for Assistance. The other initial project is in Fresno, California. The Supersites Program is par...

EPA GAS PHASE CHEMISTRY CHAMBER STUDIES

EPA Science Inventory

Gas-phase smog chamber experiments are being performed at EPA in order to evaluate a number of current chemical mechanisms for inclusion in EPA regulatory and research models. The smog chambers are 9000 L in volume and constructed of 2-mil teflon film. One of the chambers is co...

Relationship between Acute Phase Proteins and Serum Fatty Acid Composition in Morbidly Obese Patients

PubMed Central

Fernandes, Ricardo; Beserra, Bruna Teles Soares; Cunha, Raphael Salles Granato; Hillesheim, Elaine; Camargo, Carolina de Quadros; Pequito, Danielle Cristina Tonello; de Castro, Isabela Coelho; Fernandes, Luiz Cláudio; Nunes, Everson Araújo; Trindade, Erasmo Benício Santos de Moraes

2013-01-01

Background. Obesity is considered a low-grade inflammatory state and has been associated with increased acute phase proteins as well as changes in serum fatty acids. Few studies have assessed associations between acute phase proteins and serum fatty acids in morbidly obese patients. Objective. To investigate the relationship between acute phase proteins (C-Reactive Protein, Orosomucoid, and Albumin) and serum fatty acids in morbidly obese patients. Methods. Twenty-two morbidly obese patients were enrolled in this study. Biochemical and clinical data were obtained before bariatric surgery, and fatty acids measured in preoperative serum. Results. Orosomucoid was negatively correlated with lauric acid (P = 0.027) and eicosapentaenoic acid (EPA) (P = 0.037) and positively with arachidonic acid (AA) (P = 0.035), AA/EPA ratio (P = 0.005), and n-6/n-3 polyunsaturated fatty acids ratio (P = 0.035). C-Reactive Protein (CRP) was negatively correlated with lauric acid (P = 0.048), and both CRP and CRP/Albumin ratio were negatively correlated with margaric acid (P = 0.010, P = 0.008, resp.). Albumin was positively correlated with EPA (P = 0.027) and margaric acid (P = 0.008). Other correlations were not statistically significant. Conclusion. Our findings suggest that serum fatty acids are linked to acute phase proteins in morbidly obese patients. PMID:24167354

COASTAL EUTROPHICATION MONITORING FOR RESEARCH AND MANAGEMENT

EPA Science Inventory

The US EPA=s Atlantic Ecology Division (AED) has embarked on a multi-year research program aimed at developing empirical nitrogen load-response models for small well-flushed embayments in southern New England. This is part of a national EPA effort to develop nutrient load-respon...

78 FR 30951 - SBIR/STTR Phase I to Phase II Transition Benchmarks

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-23

... (NIST) 0.25 5 DOC (NOAA) 0.25 5 NASA 0.25 5 DHS 0.25 5 DOE 0.25 5 EPA 0.25 5 DoD 0.25 5 NSF 0.25 5 DOT 0... for the Environmental Protection Agency (EPA) and the Department of Education (ED) from the current... used by EPA and ED for this benchmark calculation is currently 10 years. EPA and ED have concluded that...

Lake Tahoe

EPA Pesticide Factsheets

Information on the Lake Tahoe watershed, EPA's protection efforts, water quality issues, effects of climate change, Lake Tahoe Total Maximum Daily Load (TMDL), EPA-sponsored projects, list of partner agencies.

Enhancing EPA Content in an Arctic Diatom: A Factorial Design Study to Evaluate Interactive Effects of Growth Factors.

PubMed

Steinrücken, Pia; Mjøs, Svein A; Prestegard, Siv K; Erga, Svein R

2018-01-01

Microalgae with a high content of the omega-3 polyunsaturated fatty acids (PUFAs), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) are of great demand for microalgae-based technologies. An Arctic strain of the diatom Attheya septentrionalis was shown in previous experiments to increase its EPA content from 3.0 to 4.6% of dry weight (DW) in the nutrient-replete exponential phase and nutrient-depleted stationary phase, respectively. In the present study, a factorial-design experiment was used, to investigate this effect in more detail and in combination with varying salinities and irradiances. A mathematical model revealed that both growth phase and salinity, alone and in combination, influenced the EPA content significantly. Maximum EPA values of 7.1% DW were obtained at a salinity of 22 and after 5 days in stationary phase, and might be related to a decreased silica content, an accumulation of storage lipids containing EPA, or both. However, growth rates were lower for low salinity (0.54 and 0.57 d -1 ) than high salinity (0.77 and 0.98 d -1 ) cultures.

GOALS AND CURRENT RESEARCH OF EPA'S STREAM RESTORATION RESEARCH PROGRAM

EPA Science Inventory

The US EPA is involved in ongoing research on stream and riparian restoration. This presentation is designed to discuss current EPA research efforts, identify key issues in the science and practice of stream restoration, and to help frame a future National Research Council study...

EPA Awards $91,000 Environmental Education Grant to Woonasquatucket River Watershed Council in Providence, R.I.

EPA Pesticide Factsheets

The U.S. Environmental Protection Agency has awarded a $91,000 environmental education grant to the Woonasquatucket River Watershed Council in Providence, R.I. to work on a two-year effort to educate K-12 students in greater Providence about environmental

USE AND RELEASE OF MERCURY IN THE UNITED STATES

EPA Science Inventory

Although mercury use is decreasing in the U.S., mercury continues to pose a serious risk to human health and the environment. This report presents the results of a two-year effort sponsored by EPA's office of Research & Development to quantify and map the flows of mercury throug...

A Description of the Environmental Protection Agency's In-House Library Systems.

ERIC Educational Resources Information Center

Thomas, Sarah M.; Needle, Lester P.

The Environmental Protection Agency's (EPA) inhouse library systems fall into two principle categories: basic library inventory systems and literature retrieval systems. Currently, the library network supports three inventory systems: the journal system; the hard bound book system; and the circulation system. At the same time, five efforts are…

78 FR 13872 - Proposed Information Collection Request; Comment Request; EPA's WaterSense Program (Renewal); EPA...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-01

... profanity, threats, information claimed to be Confidential Business Information (CBI) or other information...-efficient products and use water-efficient practices. As part of strategic planning efforts, EPA encourages... Reporting Form Promotional partners 6100-09 Manufacturers (separate forms for plumbing and non- plumbing...

RESEARCH IN EPA'S NATIONAL EXPOSURE RESEARCH LABORATORY (NERL) TO REDUCE UNCERTAINTIES IN CHILDREN'S EXPOSURE/RISK ASSESSMENTS

EPA Science Inventory

The US EPA has pledged to increase its efforts to provide a safe and healthy environment for children by ensuring that all EPA regulations, standards, policies, and risk assessments take into account special childhood vulnerabilities to environmental toxicants. To help explain...

Report: Enhanced EPA Oversight and Action Can Further Protect Water Resources From the Potential Impacts of Hydraulic Fracturing

EPA Pesticide Factsheets

Report #15-P-0204, July 16, 2015. Enhanced EPA oversight of the permitting process for diesel fuel use during hydraulic fracturing can further EPA efforts to protect water resources, and establishment of a plan for determining whether to propose a chemical

EPA Pushing Improved Air Quality in Schools.

ERIC Educational Resources Information Center

Sack, Joetta L.

2002-01-01

Discusses how, in response to the growing problem of poor air quality in schools, the Environmental Protection Agency (EPA) has set new voluntary air-quality guidelines for schools. Addresses common air-related irritants; successful efforts at Guerrero Elementary School in Mesa, Arizona; preventive maintenance; and a sample of the EPA's…

77 FR 35862 - Approval and Promulgation of Implementation Plans; State of Florida: New Source; Review...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-06-15

... Resource Management, to EPA in two separate SIP revisions on October 19, 2007, and July 1, 2011. These SIP...) Implementation Rule NSR Update Phase II (hereafter referred to as the ``Ozone Implementation NSR Update'' or ``Phase II Rule'') recognizing nitrogen oxide (NO X ) as an ozone precursor, among other requirements. In...

77 FR 20582 - Approval and Promulgation of Implementation Plans; State of Florida: New Source Review Prevention...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-05

... Management to EPA in two separate SIP revisions on October 19, 2007, and July 1, 2011. These SIP revisions... Rule NSR Update Phase II (hereafter referred to as the ``Ozone Implementation NSR Update'' or ``Phase..., Air, Pesticides and Toxics Management Division, U.S. Environmental Protection Agency, Region 4, 61...

EPA's Efforts in Eurasia

EPA Pesticide Factsheets

EPA has been collaborating with Russia, Central Asia, the Caucasus and Ukraine for over 20 years and continues to work with their governments and non-governmental organizations on environment, science and technology issues.

Clean Boating Act (CBA): Public Participation

EPA Pesticide Factsheets

Describes EPA's efforts to engage the public on the Clean Boating Act through listening sessions in Annapolis, Maryland in 2011. The EPA presented background information and addressed participant questions and comments.

76 FR 52658 - State Program Requirements; Approval of Application for Program Revision to the National...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-23

... (ADEC) in four phases. Phases I-III have been transferred from the EPA to ADEC. In March 2011, ADEC made a submission for approval for a one year extension of the transfer of Phase IV of the APDES program... facilities not previously transferred in Phases I-III. The EPA approved the one year extension for Phase IV...

A COMPARATIVE ANALYSIS OF INDICES IN REMAP MONITORING STUDIES IN NEW YORK/NEW JERSEY HARBOR

EPA Science Inventory

Two regional monitoring efforts (1993/1994 and 1998) were conducted in the New York/New Jersey Harbor system. U.S. EPA-Region II (Edison, New Jersey) sought to evaluate the condition of the Harbor sediments and the changes over time as part of the Regional Environmental Monitor...

Meet EPA Scientist Jody Shoemaker, Ph.D.

EPA Pesticide Factsheets

EPA research chemist Jody Shoemaker, Ph.D., works to support Agency efforts to protect drinking water. She helps develop methods for analyzing organic chemicals on the Drinking Water Contaminant Candidate List (CCL).

20180312 - US EPA-Unilever Collaborative Partnership: Accomplishments and Next Steps (SOT)

EPA Science Inventory

Reiterating the goals of the partnership, this summarizes the accomplishments and progress made so far in the collaboration, and announces a two phase extension focused on further development of high-throughput transcriptomic platform

EPA Evaluations of Phase I Watershed Implementation Plans in the Chesapeake Bay Watershed

EPA Pesticide Factsheets

This page provides the PDF documents of EPA's evaluation of the Phase I WIPs submitted by the jurisdictions (Delaware, District of Columbia, Maryland, New York, Pennsylvania, Virginia and West Virginia).

Other EPA Initiatives to Protect the Ozone Layer

EPA Pesticide Factsheets

Access information on EPA's efforts to address ozone layer depletion through voluntary partnerships with the private sector and activities aimed at educating the public about the health effects of ozone layer depletion.

75 FR 47589 - Agency Information Collection Activities; Proposed Collection; Comment Request; Correction of...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-08-06

... Inventory; EPA ICR No. 1741.06, OMB Control No. 2070-0145 AGENCY: Environmental Protection Agency (EPA... Control Act (TSCA) Inventory and regulated under TSCA section 8, who had reported to the initial effort to...: ``Correction of Misreported Chemical Substances on the TSCA Inventory'' and identified by EPA ICR No. 1741.06...

EPA Response to BOSC Report on ORD Research Programs

EPA Pesticide Factsheets

The Air, Climate, and Energy research program is structured to provide research results that address EPA priorities and mandates, meet partners’ needs, fill knowledge gaps, and complement broader efforts across the federal government.

Plan EJ 2014: Resources Tools Development

EPA Pesticide Factsheets

EPA's efforts advance the Administrator’s priority of Expanding the Conversation on Environmentalism and Working for Environmental Justice by establishing a new paradigm for the delivery of EPA assistance to minority, low-income, tribal, and indigenous pe

Acid Rain Guidance On Phase II Permitting NOx And Opt-ins

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

VERIFICATION OF SURFACE LAYER OZONE FORECASTS IN THE NOAA/EPA AIR QUALITY FORECAST SYSTEM IN DIFFERENT REGIONS UNDER DIFFERENT SYNOPTIC SCENARIOS

EPA Science Inventory

An air quality forecast (AQF) system has been established at NOAA/NCEP since 2003 as a collaborative effort of NOAA and EPA. The system is based on NCEP's Eta mesoscale meteorological model and EPA's CMAQ air quality model (Davidson et al, 2004). The vision behind this system is ...

Notification: Workforce Restructuring Under VERA–VSIP

EPA Pesticide Factsheets

Project #OPE-FY14-0049, October 8, 2014. The Office of Inspector General (OIG) for the U.S. Environmental Protection Agency (EPA) plans to begin preliminary research on efforts to restructure the EPA workforce in fiscal year 2014.

EPA Solar Utilization in Higher Education Networking and Information Sharing Group

EPA Pesticide Factsheets

EPA's Green Power Partnership has a number of initiatives that focus on the collective green power efforts within specific sectors and renewable energy procurement strategies, which provide recognition opportunities for Partners and increase awareness.

UNDERSTANDING CHILDREN'S EXPOSURES TO CHEMICALS

EPA Science Inventory

The EPA has pledged to increase its efforts to provide a safe and healthy environment for children by ensuring that all EPA regulations, standards, policies, and risk assessments take into account special childhood vulnerabilities to environmental chemicals. In evaluating enviro...

EPA WASTE MINIMIZATION RESEARCH PROGRAM: AN OVERVIEW

EPA Science Inventory

The US Environmental Protection Agency (EPA) has established a waste minimization research program within the Office of Research and Development's Risk Reduction Engineering Laboratory which is the primary contact for pollution prevention research efforts concentrating on source ...

Highly Sensitive Determination of 2,4,6-Trinitrotoluene and Related Byproducts Using a Diol Functionalized Column for High Performance Liquid Chromatography

PubMed Central

Gumuscu, Burcu; Erdogan, Zeynep; Guler, Mustafa O.; Tekinay, Turgay

2014-01-01

In this work, a new detection method for complete separation of 2,4,6-trinitrotoluene (TNT); 2,4-dinitrotoluene (2,4-DNT); 2,6-dinitrotoluene (2,6-DNT); 2-aminodinitrotoluene (2-ADNT) and 4-aminodinitrotoluene (4-ADNT) molecules in high-performance liquid-chromatography (HPLC) with UV sensor has been developed using diol column. This approach improves on cost, time, and sensitivity over the existing methods, providing a simple and effective alternative. Total analysis time was less than 13 minutes including column re-equilibration between runs, in which water and acetonitrile were used as gradient elution solvents. Under optimized conditions, the minimum resolution between 2,4-DNT and 2,6-DNT peaks was 2.06. The recovery rates for spiked environmental samples were between 95–98%. The detection limits for diol column ranged from 0.78 to 1.17 µg/L for TNT and its byproducts. While the solvent consumption was 26.4 mL/min for two-phase EPA and 30 mL/min for EPA 8330 methods, it was only 8.8 mL/min for diol column. The resolution was improved up to 49% respect to two-phase EPA and EPA 8330 methods. When compared to C-18 and phenyl-3 columns, solvent usage was reduced up to 64% using diol column and resolution was enhanced approximately two-fold. The sensitivity of diol column was afforded by the hydroxyl groups on polyol layer, joining the formation of charge-transfer complexes with nitroaromatic compounds according to acceptor-donor interactions. Having compliance with current requirements, the proposed method demonstrates sensitive and robust separation. PMID:24905826

Highly sensitive determination of 2,4,6-trinitrotoluene and related byproducts using a diol functionalized column for high performance liquid chromatography.

PubMed

Gumuscu, Burcu; Erdogan, Zeynep; Guler, Mustafa O; Tekinay, Turgay

2014-01-01

In this work, a new detection method for complete separation of 2,4,6-trinitrotoluene (TNT); 2,4-dinitrotoluene (2,4-DNT); 2,6-dinitrotoluene (2,6-DNT); 2-aminodinitrotoluene (2-ADNT) and 4-aminodinitrotoluene (4-ADNT) molecules in high-performance liquid-chromatography (HPLC) with UV sensor has been developed using diol column. This approach improves on cost, time, and sensitivity over the existing methods, providing a simple and effective alternative. Total analysis time was less than 13 minutes including column re-equilibration between runs, in which water and acetonitrile were used as gradient elution solvents. Under optimized conditions, the minimum resolution between 2,4-DNT and 2,6-DNT peaks was 2.06. The recovery rates for spiked environmental samples were between 95-98%. The detection limits for diol column ranged from 0.78 to 1.17 µg/L for TNT and its byproducts. While the solvent consumption was 26.4 mL/min for two-phase EPA and 30 mL/min for EPA 8330 methods, it was only 8.8 mL/min for diol column. The resolution was improved up to 49% respect to two-phase EPA and EPA 8330 methods. When compared to C-18 and phenyl-3 columns, solvent usage was reduced up to 64% using diol column and resolution was enhanced approximately two-fold. The sensitivity of diol column was afforded by the hydroxyl groups on polyol layer, joining the formation of charge-transfer complexes with nitroaromatic compounds according to acceptor-donor interactions. Having compliance with current requirements, the proposed method demonstrates sensitive and robust separation.

Operation of a sampling train for the analysis of environmental species in coal gasification gas-phase process streams

DOE Office of Scientific and Technical Information (OSTI.GOV)

Pochan, M.J.; Massey, M.J.

1979-02-01

This report discusses the results of actual raw product gas sampling efforts and includes: Rationale for raw product gas sampling efforts; design and operation of the CMU gas sampling train; development and analysis of a sampling train data base; and conclusions and future application of results. The results of sampling activities at the CO/sub 2/-Acceptor and Hygas pilot plants proved that: The CMU gas sampling train is a valid instrument for characterization of environmental parameters in coal gasification gas-phase process streams; depending on the particular process configuration, the CMU gas sampling train can reduce gasifier effluent characterization activity to amore » single location in the raw product gas line; and in contrast to the slower operation of the EPA SASS Train, CMU's gas sampling train can collect representative effluent data at a rapid rate (approx. 2 points per hour) consistent with the rate of change of process variables, and thus function as a tool for process engineering-oriented analysis of environmental characteristics.« less

EPA Science Matters Newsletter: Volume 2, Number 4

EPA Pesticide Factsheets

While continuing to advance the kinds of cutting edge research efforts that are the hallmark of EPA, we also are taking ambitious steps to ensure that we are as effective as we can be for the American people.

Report: EPA Needs to Reexamine How It Defines Its Payment Recapture Audit Program

EPA Pesticide Factsheets

Report #11-P-0362, July 19, 2011. EPA makes numerous efforts to recapture improper payments, but does not consider its activities to be a formal payment recapture audit program, as defined by OMB guidance.

EPA Responds to NRDC's 2008 Freedom of Information Act Complaint on Clothianidin

EPA Pesticide Factsheets

The Natural Resources Defense Council had made a FOIA request for information on the pesticide clothianidin in relation to pollinator protection and Colony Collapse Disorder (CCD), and inaccurately represented EPA's efforts to protect bees.

EPA SmartWay’s Vision 2020 for Supply Chain Sustainability

EPA Pesticide Factsheets

EPA outlines its vision of SmartWays’ future detailing the development of carbon and emission tracking tools covering all modes of freight transport, global efforts to harmonize carbon accounting standards for sustainability, and leveraging the SW brand.

EPA Science Matters Newsletter: Chemical Warfare Agent Analytical Standards Facilitate Lab Testing (Published November 2013)

EPA Pesticide Factsheets

Learn about the EPA chemists' efforts to develop methods for detecting extremely low concentrations of nerve agents, such as sarin, VX, soman and cyclohexyl sarin, and the blister agent sulfur mustard.

EPA's Southwest Ecosystem Services Research Program

EPA Science Inventory

EPA's Ecosystem Services Research Program (ESRP) in the Office of Research and Development (ORD) is studying ecosystem services and the benefits to human well-being provided by ecological services. As part of this research effort, the Southwest Ecosystem Services Research Progra...

EPA Science Matters Newsletter: Volume 2, Number 4

EPA Pesticide Factsheets

2017-02-14

While continuing to advance the kinds of cutting edge research efforts that are the hallmark of EPA, we also are taking ambitious steps to ensure that we are as effective as we can be for the American people.

Antibacterial and antibiofilm activities of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) against periodontopathic bacteria.

PubMed

Sun, Mengjun; Zhou, Zichao; Dong, Jiachen; Zhang, Jichun; Xia, Yiru; Shu, Rong

2016-10-01

Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) are two major omega-3 polyunsaturated fatty acids (n-3 PUFAs) with antimicrobial properties. In this study, we evaluated the potential antibacterial and antibiofilm activities of DHA and EPA against two periodontal pathogens, Porphyromonas gingivalis (P. gingivalis) and Fusobacterium nucleatum (F. nucleatum). MTT assay showed that DHA and EPA still exhibited no cytotoxicity to human oral tissue cells when the concentration came to 100 μM and 200 μM, respectively. Against P. gingivalis, DHA and EPA showed the same minimum inhibitory concentration (MIC) of 12.5 μM, and a respective minimum bactericidal concentration (MBC) of 12.5 μM and 25 μM. However, the MIC and MBC values of DHA or EPA against F. nucleatum were both greater than 100 μM. For early-stage bacteria, DHA or EPA displayed complete inhibition on the planktonic growth and biofilm formation of P. gingivalis from the lowest concentration of 12.5 μM. And the planktonic growth of F. nucleatum was slightly but not completely inhibited by DHA or EPA even at the concentration of 100 μM, however, the biofilm formation of F. nucleatum at 24 h was significantly restrained by 100 μM EPA. For exponential-phase bacteria, 100 μM DHA or EPA completely killed P. gingivalis and significantly decreased the viable counts of F. nucleatum. Meanwhile, the morphology of P. gingivalis was apparently damaged, and the virulence factor gene expression of P. gingivalis and F. nucleatum was strongly downregulated. Besides, the viability and the thickness of mature P. gingivalis biofilm, together with the viability of mature F. nucleatum biofilm were both significantly decreased in the presence of 100 μM DHA or EPA. In conclusion, DHA and EPA possessed antibacterial activities against planktonic and biofilm forms of periodontal pathogens, which suggested that DHA and EPA might be potentially supplementary therapeutic agents for prevention and treatment of periodontal diseases. Copyright © 2016 Elsevier Ltd. All rights reserved.

Do 16 Polycyclic Aromatic Hydrocarbons Represent PAH Air Toxicity?

PubMed

Samburova, Vera; Zielinska, Barbara; Khlystov, Andrey

2017-08-15

Estimation of carcinogenic potency based on analysis of 16 polycyclic aromatic hydrocarbons (PAHs) ranked by U.S. Environmental Protection Agency (EPA) is the most popular approach within scientific and environmental air quality management communities. The majority of PAH monitoring projects have been focused on particle-bound PAHs, ignoring the contribution of gas-phase PAHs to the toxicity of PAH mixtures in air samples. In this study, we analyzed the results of 13 projects in which 88 PAHs in both gas and particle phases were collected from different sources (biomass burning, mining operation, and vehicle emissions), as well as in urban air. The aim was to investigate whether 16 particle-bound U.S. EPA priority PAHs adequately represented health risks of inhalation exposure to atmospheric PAH mixtures. PAH concentrations were converted to benzo(a)pyrene-equivalent (BaPeq) toxicity using the toxic equivalency factor (TEF) approach. TEFs of PAH compounds for which such data is not available were estimated using TEFs of close isomers. Total BaPeq toxicities (∑ 88 BaPeq) of gas- and particle-phase PAHs were compared with BaPeq toxicities calculated for the 16 particle-phase EPA PAH (∑ 16EPA BaPeq). The results showed that 16 EPA particle-bound PAHs underrepresented the carcinogenic potency on average by 85.6% relative to the total (gas and particle) BaPeq toxicity of 88 PAHs. Gas-phase PAHs, like methylnaphthalenes, may contribute up to 30% of ∑ 88 BaPeq. Accounting for other individual non-EPA PAHs (i.e., benzo(e)pyrene) and gas-phase PAHs (i.e., naphthalene, 1- and 2-methylnaphthalene) will make the risk assessment of PAH-containing air samples significantly more accurate.

Cheminformatics Analysis of EPA ToxCast Chemical Libraries ...

EPA Pesticide Factsheets

An important goal of toxicology research is the development of robust methods that use in vitro and chemical structure information to predict in vivo toxicity endpoints. The US EPA ToxCast program is addressing this goal using ~600 in vitro assays to create bioactivity profiles on a set of 320 compounds, mostly pesticide actives, that have well characterized in vivo toxicity. These 320 compounds (EPA-320 set evaluated in Phase I of ToxCast) are a subset of a much larger set of ~10,000 candidates that are of interest to the EPA (called here EPA-10K). Predictive models of in vivo toxicity are being constructed from the in vitro assay data on the EPA-320 chemical set. These models require validation on additional chemicals prior to wide acceptance, and this will be carried out by evaluating compounds from EPA-10K in Phase II of ToxCast. We have used cheminformatics approaches including clustering, data visualization, and QSAR to develop models for EPA-320 that could help prioritizing EPA-10K validation chemicals. Both chemical descriptors, as well as calculated physicochemical properties have been used. Compounds from EPA-10K are prioritized based on their similarity to EPA-320 using different similarity metrics, with similarity thresholds defining the domain of applicability for the predictive models built for EPA-320 set. In addition, prioritized lists of compounds of increasing dissimilarity from the EPA-320 have been produced, to test the ability of the EPA-320

Silicon solar cells with a total power capacity of 30 kilowatts

NASA Technical Reports Server (NTRS)

1977-01-01

The bulk of the contract effort was carried out in the following two phases: Phase 1 -- module design, Pre-production module fabrication, inspection and test. Phase 2 -- Production, test and delivery. Effort during the first two months of the contract concentrated on design of a solar module to meet specification. Basic module design resulting from this effort is as follows: (1) frame design; (2) cell pan design; (3) cell interconnection; (4) encapsulation; (5) electrical performance.

Building a Robust 21st Century Chemical Testing Program at the U.S. Environmental Protection Agency: Recommendations for Strengthening Scientific Engagement

PubMed Central

Dantzker, Heather C.; Portier, Christopher J.

2014-01-01

Background: Biological pathway-based chemical testing approaches are central to the National Research Council’s vision for 21st century toxicity testing. Approaches such as high-throughput in vitro screening offer the potential to evaluate thousands of chemicals faster and cheaper than ever before and to reduce testing on laboratory animals. Collaborative scientific engagement is important in addressing scientific issues arising in new federal chemical testing programs and for achieving stakeholder support of their use. Objectives: We present two recommendations specifically focused on increasing scientific engagement in the U.S. Environmental Protection Agency (EPA) ToxCast™ initiative. Through these recommendations we seek to bolster the scientific foundation of federal chemical testing efforts such as ToxCast™ and the public health decisions that rely upon them. Discussion: Environmental Defense Fund works across disciplines and with diverse groups to improve the science underlying environmental health decisions. We propose that the U.S. EPA can strengthen the scientific foundation of its new chemical testing efforts and increase support for them in the scientific research community by a) expanding and diversifying scientific input into the development and application of new chemical testing methods through collaborative workshops, and b) seeking out mutually beneficial research partnerships. Conclusions: Our recommendations provide concrete actions for the U.S. EPA to increase and diversify engagement with the scientific research community in its ToxCast™ initiative. We believe that such engagement will help ensure that new chemical testing data are scientifically robust and that the U.S. EPA gains the support and acceptance needed to sustain new testing efforts to protect public health. Citation: McPartland J, Dantzker HC, Portier CJ. 2015. Building a robust 21st century chemical testing program at the U.S. Environmental Protection Agency: recommendations for strengthening scientific engagement. Environ Health Perspect 123:1–5; http://dx.doi.org/10.1289/ehp.1408601 PMID:25343778

TRICHLOROETHYLENE (TCE) ISSUE PAPERS

EPA Science Inventory

These issue papers are a part of EPA's effort to develop a trichloroethylene (TCE) human health risk assessment. These issue papers were developed by EPA to provide scientific and technical information to the National Academy of Sciences (NAS) for use in developing their advice ...

Guidelines for Preparing Economic Analysis (2010, revised 2014)

EPA Pesticide Factsheets

The Guidelines for Preparing Economic Analyses: External Review Draft have been prepared for review by the EPA Science Advisory Board and are part of a continuing effort by the U.S. EPA to develop improved economic guidance to support decision making.

Cumulative Risk Assessment: Overview of Agency Guidance, Practice and Current Major Research Activities

EPA Science Inventory

Powerpoint presentation that includes the EPA's definition of CRA, relevant publications already in existence, the CRA Guidelines effort, science issues where research is still needed, program office practices related to CRA, and EPA research activities.

Great Lakes Sedimentation Workshop: US EPA National Stormwater Calculator

EPA Science Inventory

Stormwater discharges continue to cause impairment of our Nation’s waterbodies. In order to reduce impairment, EPA has developed the National Stormwater Calculator (SWC) to help support local, state, and national stormwater management objectives and regulatory efforts to re...

Report: Additional Efforts Needed to Improve EPA’s Oversight of Assistance Agreements

EPA Pesticide Factsheets

Report #2002-P-00018, September 30, 2002. Although EPA developed corrective actions to improve oversight controls for assistance agreements, a number of EPA OIG, Agency, and GAO reviews determined that oversight continued to be a weakness.

Let the IRIS Bloom:Regrowing the integrated risk information system (IRIS) of the U.S. Environmental Protection Agency.

PubMed

Dourson, Michael L

2018-05-03

The Integrated Risk Information System (IRIS) of the U.S. Environmental Protection Agency (EPA) has an important role in protecting public health. Originally it provided a single database listing official risk values equally valid for all Agency offices, and was an important tool for risk assessment communication across EPA. Started in 1986, IRIS achieved full standing in 1990 when it listed 500 risk values, the effort of two senior EPA groups over 5 years of monthly face-to-face meetings, to assess combined risk data from multiple Agency offices. Those groups were disbanded in 1995, and the lack of continuing face-to-face meetings meant that IRIS became no longer EPA's comprehensive database of risk values or their latest evaluations. As a remedy, a work group of the Agency's senior scientists should be re-established to evaluate new risks and to update older ones. Risk values to be reviewed would come from the same EPA offices now developing such information on their own. Still, this senior group would have the final authority on posting a risk value in IRIS, independently of individual EPA offices. This approach could also lay the groundwork for an all-government IRIS database, especially needed as more government Agencies, industries and non-governmental organizations are addressing evolving risk characterizations. Copyright © 2018. Published by Elsevier Inc.

Design and implementation of an air monitoring program in support of a brownfields redevelopment program

DOE Office of Scientific and Technical Information (OSTI.GOV)

Maisel, B.E.; Hunt, G.T.; Devaney, R.J. Jr.

EPA`s Brownfields Economic Redevelopment Initiative has sparked renewal of industrial and commercial parcels otherwise idled or under-utilized because of real or perceived environmental contamination. In certain cases, restoring such parcels to productive economic use requires a redevelopment effort protective of human health and welfare through minimizing offsite migration of environmental contaminants during cleanup, demolition and remediation activities. To support these objectives, an air monitoring program is often required as an integral element of a comprehensive brownfields redevelopment effort. This paper presents a strategic framework for design and execution of an ambient air monitoring program in support of a brownfields remediationmore » effort ongoing in Lawrence, MA. Based on site characterization, the program included sample collection and laboratory analysis of ambient air samples for polychlorinated biphenyls (PCBs), polychlorinated dibenzodioxins and polychlorinated dibenzofurans (PCDDs/PCDFs), total suspended particulate (TSP), inhalable particulate (PM10), and lead. The program included four monitoring phases, identified as background, wintertime, demolition/remediation and post-demolition. Air sampling occurred over a 16 month period during 1996--97, during which time nine sampling locations were utilized to produce approximately 1,500 ambient air samples. Following strict data review and validation procedures, ambient air data interpretation focused on the following: evaluation of upwind/downwind sample pairs, comparison of ambient levels to existing regulatory standards, relation of ambient levels to data reported in the open literature, and, determination of normal seasonal variations in existing background burden, comparison of ambient levels measured during site activity to background levels.« less

EPA Update on Gold King Mine Response Efforts for August 17, 2015

EPA Pesticide Factsheets

August 17th news release: EPA is committed to working closely with response agencies and state and local officials to ensure the safety of citizens, respond to concerns and to evaluate impact to water contaminated by the spill.

76 FR 9015 - Reschedule-Meeting of the Local Government Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-16

... ENVIRONMENTAL PROTECTION AGENCY [FRL-9267-4] Reschedule--Meeting of the Local Government Advisory Committee AGENCY: Environmental Protection Agency (EPA). ACTION: Notice. SUMMARY: The Local Government... ways EPA can engage local government officials in Gulf Coast Ecosystem restoration efforts and other...

Semiannual Report: Apr 1, 2005 - Sept 30, 2005

EPA Pesticide Factsheets

Semiannual Report #EPA-350-R-05-003, Dec, 2005. We look forward to the challenges ahead as EPA and the Nation continue the effort to rebuild the Gulf States region and to safeguard our environment for us and for the generations that follow.

Report: EPA Needs an Agency-Wide Plan to Provide Tribal Solid Waste Management Capacity Assistance

EPA Pesticide Factsheets

Report #11-P-0171, March 21, 2011. EPA cannot determine whether its efforts are assisting tribal governments in developing the capacity to manage solid waste or reduce the risks of open dumps in Indian country.

Notification: Evaluation of EPA Efforts to Protect Tribal Communities From Risks Related to Underground Storage Tanks

EPA Pesticide Factsheets

Project #OPE-FY16-0013, March 8, 2016. The EPA OIG plans to begin preliminary research on the EPA’s work related to Underground Storage Tank and Leaking Underground Storage Tank programs in Indian country.

The EPA Liver Project

EPA Science Inventory

The v-Liver is part of a broader EPA effort on Virtual Tissues (VT) aimed at reducing the magnitude and spectrum of animal testing by integrative in silico and in vitro models, which recapitulate the properties of intact organs. The other VT projects include the Virtual Embryo (...

OVERVIEW OF WET-WEATHER RESEARCH PROGRAM

EPA Science Inventory

This paper presents an overview of EPA,s wet-weather flow (WWF) research program, which was expanded in October 1995 with the establishment of the Urban Watershed Management Branch at Edison, New Jersey. Research priorities for 1998-1999 are presented as well as efforts to col...

NATIONAL ENVIRONMENTAL LABORATORY ACCREDITATION CONFERENCE, BY LAWS, AND STANDARDS

EPA Science Inventory

NELAC is the result of a joint effort by EPA, other federal agencies, the States, and the private sector that began in 1990 when EPA's Environmental Monitoring Management Council (EMMC) established an internal work group to consider the feasibility and advisability of a national ...

NARRAGANSETT-3VS MODEL OVERVIEW (Information Sheet)

EPA Science Inventory

In an effort to advance sustainability, EPA Region 1 (New England) and the EPA Office of Research and Development (ORD) are collaborating on a project to address the problem of nutrient impairment to ecological functions in sensitive waterways. The project is based on the Triple...

USE OF ELECTROKINETICS FOR HAZARDOUS WASTE SITE REMEDIATION

EPA Science Inventory

The Superfund Innovative Technology Evaluation (SITE) program was authorized as part of the 1986 amendments to the Superfund legislation. It represents a joint effort between U.S. EPA`s Office of Research and Development and Office of Solid Waste and Emergency Response. The progr...

SUSTAIN - AN EPA BMP PROCESS AND PLACEMENT TOOL FOR URBAN WATERSHEDS

EPA Science Inventory

To assist stormwater management professionals in planning for implementation of best management practices (BMPs), efforts have been under way by the U.S. Environmental Protection Agency (EPA) since 2003 to develop a decision-support system for placement of BMPs at strategic locat...

Measuring Impact of EPAs Computational Toxicology Research (BOSC)

EPA Science Inventory

Computational Toxicology (CompTox) research at the EPA was initiated in 2005. Since 2005, CompTox research efforts have made tremendous advances in developing new approaches to evaluate thousands of chemicals for potential health effects. The purpose of this case study is to trac...

EPA'S REGIONAL VULNERABILITY ASSESSMENT PROGRAM (REVA) DEMONSTRATING RESULTS THROUGH PARTNERSHIPS

EPA Science Inventory

EPA's Regional Vulnerability Assessment (ReVA) program, a regional-scale comparative risk research effort, has been under development since 1998 with a pilot study focused on the Mid- Atlantic region. ReVA is part of the interagency Integrated Science for Ecosystem Challenges ini...

DERMAL EXPOSURE ASSESSMENT: A SUMMARY OF EPA APPROACHES

EPA Science Inventory

This final report presents a concise description and evaluation of the approaches used in the Agency for dermal exposure assessment including a discussion about harmonization and research needs in this area. The report is intended to be used by EPA program offices in their effort...

PULVERIZED COAL COMBUSTION: POLLUTANT FORMATION AND CONTROL, 1970-1980

EPA Science Inventory

The report documents the support role of EPA's Air and Energy Engineering Research Laboratory in the major research effort directed by EPA in the l970s to understand pollutant formation during pulverized coal combustion (PCC). Understanding the conversion of fuel nitrogen to nit...

76 FR 51364 - Notification of a Public Teleconference of the Science Advisory Board Panel for the Review of the...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-18

... extensive scientific studies, conferences and workshops. To guide the efforts of the GLRI, EPA and its... Web site at http://www.epa.gov/sab in advance of the meeting. Procedures for Providing Public Input...

Preliminary Assessment of the Flow of Used Electronics, In ...

EPA Pesticide Factsheets

Electronic waste (e-waste) is the largest growing municipal waste stream in the United States. The improper disposal of e-waste has environmental, economic, and social impacts, thus there is a need for sustainable stewardship of electronics. EPA/ORD has been working to improve our understanding of the quantity and flow of electronic devices from initial purchase to final disposition. Understanding the pathways of used electronics from the consumer to their final disposition would provide insight to decision makers about their impacts and support efforts to encourage improvements in policy, technology, and beneficial use. This report is the first stage of study of EPA/ORD's efforts to understand the flows of used electronics and e-waste by reviewing the regulatory programs for the selected states and identifying the key lessons learned and best practices that have emerged since their inception. Additionally, a proof-of-concept e-waste flow model has been developed to provide estimates of the quantity of e-waste generated annually at the national level, as well as for selected states. This report documents a preliminary assessment of available data and development of the model that can be used as a starting point to estimate domestic flows of used electronics from generation, to collection and reuse, to final disposition. The electronics waste flow model can estimate the amount of electronic products entering the EOL management phase based on unit sales dat

CONTAINMENT OF HIGHLY CONCENTRATED ARSENIC-LADEN SPENT REGENERANT ON THE INDIAN SUBCONTINENT

EPA Science Inventory

The Phase II EPA P3 project encompasses the following two activities in the Indian subcontinent: Continued installation of arsenic removal units in rural villages and extension of sustainable arsenic-laden waste disposal practices. For ten years, Lehigh University and Benga...

Environmental Health: Opportunities for Greater Focus, Direction, and Top-Level Commitment to Children's Health at EPA. Testimony Before the Committee on Environment and Public Works, U.S. Senate. GAO-10-545T

ERIC Educational Resources Information Center

Stephenson, John B.

2010-01-01

This testimony discusses highlights of GAO's report about the Environmental Protection Agency's (EPA) efforts to institutionalize the protection of children's health. EPA's mission is to protect human health and the environment. As a result of mounting evidence about the special vulnerabilities of the developing fetus and child, the federal…

Climate Adaptation and Harmful Algal Blooms

EPA Pesticide Factsheets

EPA supports local, state and tribal efforts to maintain water quality. A key element of its efforts is to reduce excess nutrient pollution and the resulting adverse impacts, including harmful algal blooms.

Citizen science and air quality research at the U.S. EPA

EPA Science Inventory

This presentation summarizes some of the broad areas of effort at EPA related to citizen science and then focuses in specifically on recent developments in air quality. The air quality focus includes briefly summarizing emerging air sensor technology and a variety of projects th...

78 FR 37806 - Information Collection Request Submitted to OMB for Review and Approval; Comment Request; EPA's...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-06-24

... profanity, threats, information claimed to be Confidential Business Information (CBI) or other information... strategic planning efforts, EPA encourages programs to develop meaningful performance measures, set...), Licensed Certification Providers (6100-20), Licensed Certifying Body (6100-13) Annual Reporting Form...

THE APPLICATION OF WHOLE CELL BACTERIAL ANALYSIS TO ENVIRONMENTAL CHALLENGES

EPA Science Inventory

The U.S. EPA National Exposure Research Laboratory's proteomic research efforts was presented at the American Society for Mass Spectrometry's 2005 Fall Workshop on Mass Spectrometry of Microorganisms. The U.S. EPA is investigating the potential of using this technique as a way t...

GLOBAL CHANGE RESEARCH NEWS #2: MID-ATLANTIC REGIONAL ASSESSMENT (MARA)

EPA Science Inventory

As part of this National Assessment effort mandated by the Global Change Research Act of 1990, EPA's Global Change Research Program is sponsoring the Mid-Atlantic Regional Assessment (MARA). With EPA sponsorship, a multi-disciplinary team of faculty members is leading the first a...

EPA'S APPROACH TO POLLUTION PREVENTION REF: CHEMICAL ENGINEERING PROCESS, PP. 53-58, JUNE 1989

EPA Science Inventory

EPA'S adoption of pollution prevention as the cornerstone of its future efforts on environmental protection is described as are the roles of the Pollution Prevention Office and the Waste Minimization Branch. Copy of paper available at NTIS as PB89236418.

Environmental Protection Agency Award Recipient Responsibilities

EPA Pesticide Factsheets

Itemized Award Phase information. Information about the Recipient's Responsibilities Upon Notification of the Award, The EPA Project Officer Responsibilities, and EPA Grant Specialists Responsibilities.

Two Decades of Enhancing Children’s Environmental Health Protection at the U.S. Environmental Protection Agency

PubMed Central

Firestone, Michael; Berger, Martha; Foos, Brenda; Etzel, Ruth

2016-01-01

Summary: This article provides an overview of public health efforts by the U.S. Environmental Protection Agency (EPA) during the past two decades to protect children’s health from environmental hazards. It highlights examples of concrete steps and accomplishments toward improving environmental protection and health outcomes achieved through public policy, rules and regulations, increased scientific understanding, and public health messaging. Additionally, examples of future challenges for better understanding and improving children’s environmental health are discussed. PMID:27905272

40 CFR 33.301 - What does this subpart require?

Code of Federal Regulations, 2014 CFR

2014-07-01

... AGENCY PROGRAMS Good Faith Efforts § 33.301 What does this subpart require? A recipient, including one... good faith efforts whenever procuring construction, equipment, services and supplies under an EPA...

40 CFR 33.301 - What does this subpart require?

Code of Federal Regulations, 2013 CFR

2013-07-01

... AGENCY PROGRAMS Good Faith Efforts § 33.301 What does this subpart require? A recipient, including one... good faith efforts whenever procuring construction, equipment, services and supplies under an EPA...

40 CFR 33.301 - What does this subpart require?

Code of Federal Regulations, 2012 CFR

2012-07-01

... AGENCY PROGRAMS Good Faith Efforts § 33.301 What does this subpart require? A recipient, including one... good faith efforts whenever procuring construction, equipment, services and supplies under an EPA...

40 CFR 33.301 - What does this subpart require?

Code of Federal Regulations, 2011 CFR

2011-07-01

... AGENCY PROGRAMS Good Faith Efforts § 33.301 What does this subpart require? A recipient, including one... good faith efforts whenever procuring construction, equipment, services and supplies under an EPA...

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gatchett, A.M.; Fradkin, L.; Moore, M.

In 1986, the Federal Technology Transfer Act (FTTA) was established to promote a closer, collaborative relationship between federal government agencies and the private sector. With the increasing need for new cost-effective technologies to prevent and control pollution, both the US Environmental Protection Agency (EPA) and private industry are encouraged to facilitate the transfer of knowledge and technology under this Act. The FTTA removed several of the legal and institutional barriers to cooperative research that existed before the Act`s passage. Through the FTTA, the government strives to promote the movement of its products, processes, skills, and knowledge into the private sectormore » for further development and commercialization by encouraging the exchange of technical personnel and the sharing of facilities and other resources. Collaborative efforts between industry, federal agencies, and academia are made possible through cooperative research and development agreements (CRADAs). Forty-two CRADAs and five licensing agreements have been initiated with EPA under this program. This paper provides an overview of this new and innovative program within the EPA. 1 fig., 2 tabs.« less

THE EFFECT OF SALINITY ON RATES OF ELEMENTAL MERCURY AIR/WATER EXCHANGE

EPA Science Inventory

The U.S. EPA laboratory in Athens, Georgia i spursuing the goal of developing a model for describing toxicant vapor phase air/water exchange under all relevant environmental conditions. To date, the two-layer exchange model (suitable for low wind speed conditions) has been modif...

Report: EPA Needs to Improve Its Efforts to Reduce Air Emissions at U.S. Ports

EPA Pesticide Factsheets

Report #09-P-0125, March 23, 2009. While EPA has issued air emissions regulations for most port sources, EPA’s actions to address air emissions from large oceangoing vessels in U.S. ports have not yet achieved the goals for protecting human health.

Measurement of Oil and Natural Gas Well Pad Enclosed Combustor Emissions Using Optical Remote Sensing Technologies

EPA Science Inventory

The U.S. Environmental Protection Agency (EPA), Office of Research and Development (ORD) and EPA Region 8 are collaborating under the EPA’s Regional Applied Research Effort (RARE) program to evaluate ground-based remote sensing technologies that could be used to characterize emis...

Development and Evaluation of EPA Method 1615 for Detection of Enterovirus and Norovirus in Water

EPA Science Inventory

The U.S. EPA developed a sample concentration and preparation assay in conjunction with the Total Culturable Virus Assay for concentrating and measuring culturable viruses in source and drinking waters as part of the Information Collection Rule promulgated in 1996. In an effort...

First National Expert and Stakeholder Workshop on Water Infrastructure Sustainability and Adaptation to Climate Change

EPA Science Inventory

EPA Office of Research and Development (ORD) and EPA Office of Water (OW) joinined efforts to assess and evaluate programmatic, research & development (R&D) needs for sustainable water infrastructure development and effective adaptation to climate changes. The purpose of this pr...

Report: EPA Needs to Direct More Attention, Efforts, and Funding to Enhance Its Speciation Monitoring Program for Measuring Fine Particulate Matter

EPA Pesticide Factsheets

Report #2005-P-00004, February 7, 2005. EPA has made substantial progress in establishing a speciation monitoring network, but still faces a number of challenges in ensuring that the controls are implemented at the right sources.

Evaluation of the WIPP Project`s compliance with the EPA radiation protection standards for disposal of transuranic waste

DOE Office of Scientific and Technical Information (OSTI.GOV)

Neill, R.H.; Chaturvedi, L.; Rucker, D.F.

The US Environmental Protection Agency`s (EPA) proposed rule to certify that the Waste Isolation Pilot Plant (WIPP) meets compliance with the long-term radiation protection standards for geologic repositories (40CFR191 Subparts B and C), is one of the most significant milestones to date for the WIPP project in particular, and for the nuclear waste issue in general. The Environmental Evaluation Group (EEG) has provided an independent technical oversight for the WIPP project since 1978, and is responsible for many improvements in the location, design, and testing of various aspects of the project, including participation in the development of the EPA standardsmore » since the early 1980s. The EEG reviewed the development of documentation for assessing the WIPP`s compliance by the Sandia National Laboratories following the 1985 promulgation by EPA, and provided many written and verbal comments on various aspects of this effort, culminating in the overall review of the 1992 performance assessment. For the US Department of Energy`s (DOE) compliance certification application (CCA), the EEG provided detailed comments on the draft CCA in March, 1996, and additional comments through unpublished letters in 1997 (included as Appendices 8.1 and 8.2 in this report). Since the October 30, 1997, publication of the EPA`s proposed rule to certify WIPP, the EEG gave presentations on important issues to the EPA on December 10, 1997, and sent a December 31, 1997 letter with attachments to clarify those issues (Appendix 8.3). The EEG has raised a number of questions that may have an impact on compliance. In spite of the best efforts by the EEG, the EPA reaction to reviews and suggestions has been slow and apparently driven by legal considerations. This report discusses in detail the questions that have been raised about containment requirements. Also discussed are assurance requirements, groundwater protection, individual protection, and an evaluation of EPA`s responses to EEG`s comments.« less

U.S. EPA computational toxicology programs: Central role of chemical-annotation efforts and molecular databases

EPA Science Inventory

EPA’s National Center for Computational Toxicology is engaged in high-profile research efforts to improve the ability to more efficiently and effectively prioritize and screen thousands of environmental chemicals for potential toxicity. A central component of these efforts invol...

EPA'S RESEARCH PROJECTS RELATING TO THE DUAL-CIRCUIT AND LORENZ REFRIGERATOR/FREEZERS

EPA Science Inventory

The paper discusses EPA research projects relating to the dual-circuit and Lorenz refrigerator/freezers (RFs). EPA is interested in not only phasing out chlorofluorocarbons (CFCs) in RFs, but doing so in a way that will maximize energy efficiency and minimize subsequent impacts o...

Development and Multi-laboratory Verification of U.S. EPA Method 540 for the Analysis of Drinking Water Contaminants by Solid Phase Extraction-LC/MS/MS

EPA Science Inventory

A drinking water method for 12 chemicals, predominately pesticides, is presented that addresses the occurrence monitoring needs of the U.S. Environmental Protection Agency (EPA) for a future Unregulated Contaminant Monitoring Regulation (UCMR). The method employs solid phase ext...

Do 16 Polycyclic Aromatic Hydrocarbons Represent PAH Air Toxicity?

PubMed Central

Samburova, Vera; Zielinska, Barbara; Khlystov, Andrey

2017-01-01

Estimation of carcinogenic potency based on analysis of 16 polycyclic aromatic hydrocarbons (PAHs) ranked by U.S. Environmental Protection Agency (EPA) is the most popular approach within scientific and environmental air quality management communities. The majority of PAH monitoring projects have been focused on particle-bound PAHs, ignoring the contribution of gas-phase PAHs to the toxicity of PAH mixtures in air samples. In this study, we analyzed the results of 13 projects in which 88 PAHs in both gas and particle phases were collected from different sources (biomass burning, mining operation, and vehicle emissions), as well as in urban air. The aim was to investigate whether 16 particle-bound U.S. EPA priority PAHs adequately represented health risks of inhalation exposure to atmospheric PAH mixtures. PAH concentrations were converted to benzo(a)pyrene-equivalent (BaPeq) toxicity using the toxic equivalency factor (TEF) approach. TEFs of PAH compounds for which such data is not available were estimated using TEFs of close isomers. Total BaPeq toxicities (∑88BaPeq) of gas- and particle-phase PAHs were compared with BaPeq toxicities calculated for the 16 particle-phase EPA PAH (∑16EPABaPeq). The results showed that 16 EPA particle-bound PAHs underrepresented the carcinogenic potency on average by 85.6% relative to the total (gas and particle) BaPeq toxicity of 88 PAHs. Gas-phase PAHs, like methylnaphthalenes, may contribute up to 30% of ∑88BaPeq. Accounting for other individual non-EPA PAHs (i.e., benzo(e)pyrene) and gas-phase PAHs (i.e., naphthalene, 1- and 2-methylnaphthalene) will make the risk assessment of PAH-containing air samples significantly more accurate. PMID:29051449

Journal Article: the National Dioxin Air Monitoring Network ...

EPA Pesticide Factsheets

The U.S. EPA has established a National Dioxin Air Monitoring Network (NDAMN) to determine the temporal and geographical variability of atmospheric CDDs, CDFs and coplanar PCBs at rural and nonimpacted locations throughout the United States. Currently operating at 32 sampling stations, NDAMN has three primary purposes: (1) to determine the atmospheric levels and occurrences of dioxin-like compounds in rural and agricultural areas where livestock, poultry and animal feed crops are grown; (2) to provide measurements of atmospheric levels of dioxin-like compounds in different geographic regions of the U.S.; and (3) to provide information regarding the long-range transport of dioxin-like compounds in air over the U.S. Designed in 1997, NDAMN has been implemented in phases, with the first phase consisting of 9 monitoring stations. Previously EPA has reported on the preliminary results of monitoring at 9 rural locations from June1998 through June 19991. The one-year measurement at the 9 stations indicated an annual mean TEQDF–WHO98 air concentration of 12 fg m-3. Since this reporting, NDAMN has been extended to include additional stations. The following is intended to be an update to this national monitoring effort. We are reporting the air monitoring results of 22 NDAMN stations operational over 9 sampling moments from June 1998 to December 1999. Fifteen stations are in rural areas, and 6 are located in National Parks. One station is located in suburban Wa

76 FR 45738 - Regulated Navigation Area; Pacific Sound Resources and Lockheed Shipyard EPA Superfund Cleanup...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-01

... Shipyard superfund cleanup remediation efforts. This RNA would prohibit activities that would disturb the... sediment caps installed in the designated regulated navigation area, pursuant to the remediation efforts of... persons engaged in activities associated with remediation efforts in the superfund sites, provided that...

Summary Report for the Evaluation of Current QA Processes Within the FRMAC FAL and EPA MERL.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Shanks, Sonoya T.; Redding, Ted; Jaussi, Lynn

The Federal Radiological Monitoring and Assessment Center (FRMAC) relies on accurate and defensible analytical laboratory data to support its mission. Therefore, FRMAC must ensure that the environmental analytical laboratories providing analytical services maintain an ongoing capability to provide accurate analytical results to DOE. It is undeniable that the more Quality Assurance (QA) and Quality Control (QC) measures required of the laboratory, the less resources that are available for analysis of response samples. Being that QA and QC measures in general are understood to comprise a major effort related to a laboratory’s operations, requirements should only be considered if they aremore » deemed “value-added” for the FRMAC mission. This report provides observations of areas for improvement and potential interoperability opportunities in the areas of Batch Quality Control Requirements, Written Communications, Data Review Processes, Data Reporting Processes, along with the lessons learned as they apply to items in the early phase of a response that will be critical for developing a more efficient, integrated response for future interactions between the FRMAC and EPA assets.« less

Performance Evaluation of the United Nations Environment ...

EPA Pesticide Factsheets

A request for technical collaboration between the UNEP and the US EPA resulted in the establishment of a MCRADA. The purpose of this agreement was to evaluate an air quality monitoring system (referred to as the UNEP pod) developed by the UNEP for use in environmental situations where more sophisticated monitoring instrumentation was not available. The US EPA has conducted numerous evaluations of other similar sensor pods at its Research Triangle Park, NC research campus and has trained staff as well as established research designs for such efforts. Under the terms of the MCRADA, the US EPA would operate the pod using UNEP provided operating procedures in a manner consistent with its planned intent of deployment. The US EPA would collect air quality monitoring data from the pod involving select environmental measures over a period of approximately one month. Reference monitoring data collected from collocated federal regulatory monitors would be used to establish a comparison between the two systems and thus establishment of performance characteristics. In addition, the US EPA would provide feedback information to the UNEP as to observed ease of use features of the pod that would be beneficial in its future evolution and deployment. The UNEP recently developed a multipollutant sensor pod called the UNEP Air Quality Monitoring Unit, herein simply defined as the UNEP pod (http://aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station/). First introduced in 20

Translating Computational Toxicology Data Through ...

EPA Pesticide Factsheets

US EPA has been using in vitro testing methods in an effort to accelerate the pace of chemical evaluations and address the significant lack of health and environmental data on the thousands of chemicals found in commonly used products. Since 2005, EPA’s researchers have generated hazard data using in vitro methods for thousands chemicals, designed innovative chemical exposure prediction models, and created a repository of thousands of high quality chemical structure data. Recently, EPA's ToxCast research effort, released high-throughput screening data on thousands of chemicals. These chemicals were screened for potential health effects in over 700 high-throughput screening assay endpoints. As part of EPA’s commitment to transparency, all data is accessible through the Chemical Safety for Sustainability Dashboard (iCSS). Policy makers and stakeholders can analyze and use this data to help inform decisions they make about chemicals. Use of these new datasets in risk decisions will require changing a regulatory paradigm that has been used for decades. EPA recognized early in the ToxCast effort that a communications and outreach strategy was needed to parallel the research and aid with the development and use of these new data sources. The goal is to use communications and outreach to increase awareness, interest and usage of analyzing and using these new chemical evaluation methods. To accomplish this, EPA employs numerous communication and outreach including t

EPA'S COASTAL 2000 MONITORING PROGRAM IN THE NORTHEAST U.S.: CONSISTENCY IN METHODS AND QUALITY ASSURANCE

EPA Science Inventory

As part of EPA's national Coastal 2000 effort to estimate the ecological condition of our Nation's estuarine resources, sampling of the estuaries of the northeast United States (Delaware to Maine) began in the summer of 2000. Samples and data were collected to determine water qua...

Past, Present & Future of the US EPA: Protecting Human Health & the Natural Environment

EPA Science Inventory

The time line of events that lead to the creation of the US EPA are marked by grassroots efforts by average citizens voicing concerns to politicians in Washington. Visionary leadership by Congress and the President led to the birth of a Federal Agency dedicated to protecting huma...

Report: Benefits of EPA Initiative to Promote Renewable Energy on Contaminated Lands Have Not Been Established

EPA Pesticide Factsheets

Report #15-P-0198, July 16, 2015. EPA does not know the benefits realized from its efforts to promote siting renewable energy on contaminated lands. As a result, the agency is unable to demonstrate benefits realized for the $4 million it stated it has inve

PROJECTING FUTURE-YEAR POLLUTANT EMISSIONS: EMERGING APPROACHES FROM THE EPA ORD GLOBAL CHANGE AIR QUALITY ASSESSMENT

EPA Science Inventory

The U.S. EPA's Office of Research and Development is exploring approaches for assessing the relative impacts of climate and emissions changes on future-year air quality. A challenge related to this effort is the development of emissions inventories out to the year 2050. This pap...

A LANDSCAPE ATLAS OF ECOLOGICAL VULNERABILITY: ARKANSAS' WHITE RIVER WATERSHED AND THE MISSISSIPPI ALLUVIAL VALLEY

EPA Science Inventory

In July, 2000 the U.S. EPA's Office of Research and Development was requested to collaborate in a U.S. EPA Region 6 'Regional Applied Research Effort' (RARE). The primary goal of this RARE is to utilize current science and technology to improve the ecological vulnerability asses...

Small Drinking Water Systems Communication and Outreach ...

EPA Pesticide Factsheets

As part of our small drinking water systems efforts, this poster highlights several communications and outreach highlights that EPA's Office of Research and Development and Office of Water have been undertaking in collaboration with states and the Association of State Drinking Water Administrators. To share information at EPA's annual small drinking water systems workshop

EPA ORD/EPA REGION 2/PITTSBURGH WSA COOPERATIVE EFFORT: EVALUATING CRYPTOSPORIDIUM AND GIARDIA IN COMBINED SEWER OVERFLOW AS A THREAT TO DRINKING WATER SUPPLIES

EPA Science Inventory

Since the first identified Cryptosporidium outbreak in the United Kingdom in 1983, emerging protozoa pathogens Cryptosporidium and Giardia have become the subject of growing local, state, and national concerns. Both organisms have been the causative agent of many gastrointestina...

COMBUSTION MODIFICATION CONTROL OF NITROGEN OXIDES (EPA/600/F-95/012)

EPA Science Inventory

EPA's efforts in research and development of nitrogen oxide (NOx) control technologies by
means of modifying the combustion process have played a major role in reducing stationary
source NOx emissions by over 3 million tons (2.73 x 10^6 tonnes) annually, and have led to at<...

Advancing Consumer Product Composition and Chemical ...

EPA Pesticide Factsheets

This presentation describes EPA efforts to collect, model, and measure publically available consumer product data for use in exposure assessment. The development of the ORD Chemicals and Products database will be described, as will machine-learning based models for predicting chemical function. Finally, the talk describes new mass spectrometry-based methods for measuring chemicals in formulation and articles. This presentation is an invited talk to the ICCA-LRI workshop "Fit-For-Purpose Exposure Assessments For Risk-Based Decision Making". The talk will share EPA efforts to characterize the components of consumer products for use in exposure assessment with the international exposure science community.

APPLICATION OF A TWO-DIMENSIONAL CHROMATOGRAPHY SYSTEM FOR GAS-PHASE PHOTODEGRADATION STUDIES OF POLYEHLORINATED DIBENZO-P-DIOXINS. (R825549C049)

EPA Science Inventory

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

A STUDY TO EVALUATE THE LEVELS OF DIOXIN-LIKE COMPOUNDS IN DAIRY FEEDS IN THE U.S.

EPA Science Inventory

The Environmental Protection Agency (EPA), in cooperation with USDA and the US Food and Drug Administration (FDA), has undertaken a program to study the presence of dioxin-like compounds in animal feeds. Two phases of this program have been completed, and this paper reports on t...

Agencies Collaborate, Develop a Cyanobacteria Assessment Network

EPA Science Inventory

This collaborative effort integrates the efforts of the U.S. Environmental Protection Agency (EPA), National Aeronautics and Space Administration (NASA), National Oceanic and Atmospheric Administration (NOAA), and U.S. Geological Survey (USGS) to provide an approach for mainstrea...

EPA REMOTE SENSING RESEARCH

EPA Science Inventory

The 2006 transgenic corn imaging research campaign has been greatly assisted through a cooperative effort with several Illinois growers who provided planting area and crop composition. This research effort was designed to evaluate the effectiveness of remote sensed imagery of var...

A comparison of two above-ground biomass estimation techniques integrating satellite-based remotely sensed data and ground data for tropical and semiarid forests in Puerto Rico

NASA Astrophysics Data System (ADS)

Iiames, J. S.; Riegel, J.; Lunetta, R.

2013-12-01

Two above-ground forest biomass estimation techniques were evaluated for the United States Territory of Puerto Rico using predictor variables acquired from satellite based remotely sensed data and ground data from the U.S. Department of Agriculture Forest Inventory Analysis (FIA) program. The U.S. Environmental Protection Agency (EPA) estimated above-ground forest biomass implementing methodology first posited by the Woods Hole Research Center developed for conterminous United States (National Biomass and Carbon Dataset [NBCD2000]). For EPA's effort, spatial predictor layers for above-ground biomass estimation included derived products from the U.S. Geologic Survey (USGS) National Land Cover Dataset 2001 (NLCD) (landcover and canopy density), the USGS Gap Analysis Program (forest type classification), the USGS National Elevation Dataset, and the NASA Shuttle Radar Topography Mission (tree heights). In contrast, the U.S. Forest Service (USFS) biomass product integrated FIA ground-based data with a suite of geospatial predictor variables including: (1) the Moderate Resolution Imaging Spectrometer (MODIS)-derived image composites and percent tree cover; (2) NLCD land cover proportions; (3) topographic variables; (4) monthly and annual climate parameters; and (5) other ancillary variables. Correlations between both data sets were made at variable watershed scales to test level of agreement. Notice: This work is done in support of EPA's Sustainable Healthy Communities Research Program. The U.S EPA funded and conducted the research described in this paper. Although this work was reviewed by the EPA and has been approved for publication, it may not necessarily reflect official Agency policy. Mention of any trade names or commercial products does not constitute endorsement or recommendation for use.

77 FR 21433 - Regulated Navigation Area; Pacific Sound Resources and Lockheed Shipyard EPA Superfund Cleanup...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-10

... superfund cleanup remediation efforts. This RNA will prohibit activities that would disturb the seabed, such... installed in the designated regulated navigation area, pursuant to the remediation efforts of the U.S... activities associated with remediation efforts in the superfund sites, provided that the Captain of the Port...

40 CFR 33.303 - Are there special rules for loans under EPA financial assistance agreements?

Code of Federal Regulations, 2013 CFR

2013-07-01

... UNITED STATES ENVIRONMENTAL PROTECTION AGENCY PROGRAMS Good Faith Efforts § 33.303 Are there special... identified loans comply with the good faith efforts described in § 33.301 and the contract administration...

40 CFR 33.303 - Are there special rules for loans under EPA financial assistance agreements?

Code of Federal Regulations, 2011 CFR

2011-07-01

... UNITED STATES ENVIRONMENTAL PROTECTION AGENCY PROGRAMS Good Faith Efforts § 33.303 Are there special... identified loans comply with the good faith efforts described in § 33.301 and the contract administration...

40 CFR 33.303 - Are there special rules for loans under EPA financial assistance agreements?

Code of Federal Regulations, 2012 CFR

2012-07-01

... UNITED STATES ENVIRONMENTAL PROTECTION AGENCY PROGRAMS Good Faith Efforts § 33.303 Are there special... identified loans comply with the good faith efforts described in § 33.301 and the contract administration...

40 CFR 33.303 - Are there special rules for loans under EPA financial assistance agreements?

Code of Federal Regulations, 2014 CFR

2014-07-01

... UNITED STATES ENVIRONMENTAL PROTECTION AGENCY PROGRAMS Good Faith Efforts § 33.303 Are there special... identified loans comply with the good faith efforts described in § 33.301 and the contract administration...

40 CFR 33.303 - Are there special rules for loans under EPA financial assistance agreements?

Code of Federal Regulations, 2010 CFR

2010-07-01

... UNITED STATES ENVIRONMENTAL PROTECTION AGENCY PROGRAMS Good Faith Efforts § 33.303 Are there special... identified loans comply with the good faith efforts described in § 33.301 and the contract administration...

Operational Range Assessment Program (ORAP) Phase II Overview for Active Installations

DTIC Science & Technology

2011-05-01

Dissolved Metals by EPA 1638M • Isotopic Uranium by EML A-01-R Mod  Sediment Analysis • None  Benthic Macroinvertebrates • Diversity Indices...Metals by EPA 200.8 • Dissolved Metals by EPA 200.8 (if turbid) • Isotopic Uranium by EML A-01- R Mod (if total U is > action limit) Groundwater

76 FR 46801 - Modification of the Expiration Date for the National Pollutant Discharge Elimination System...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-03

... CONTACT: Alanna Conley or Michael Mitchell of the Stormwater and Nonpoint Source Section, Water Protection... are available at EPA Region 4's stormwater Web site at: http://www.epa.gov/region4/water/permits... Water Act (CWA) directs EPA to develop a phased approach to regulate stormwater discharges under the...

NHEXAS PHASE I ARIZONA STUDY--STANDARD OPERATING PROCEDURE FOR COLLECTION, STORAGE AND SHIPMENT OF DRINKING AND TAP WATER SAMPLES FOR PESTICIDES (EPA 225.2) AND CARBARYL (EPA 531.1) (UA-F-17.1)

EPA Science Inventory

The purpose of this SOP is to describe how to collect, store, and ship tap and drinking water samples for analysis by EPA Method 525.2 (revision 1.0) and EPA method 531.1 (revision 3) for the NHEXAS Arizona project. This SOP provides a brief description of the sample containers,...

DEVELOPMENT OF METHOD 535 FOR THE DETERMINATION OF CHLOROACETANILIDE AND OTHER ACETAMIDE HERBICIDE DEGRADATES IN DRINKING WATER BY SOLID PHASE EXTRACTION AND LIQUID CHROMATOGRAPHY/TANDEM MASS SPECTROMETRY

EPA Science Inventory

EPA Method 535 has been developed in order to provide a method for the analysis of "Alachlor ESA and other acetanilide degradation products" which are listed on U.S. EPA's 1998 Drinking Water Contaminant Candidate List. Method 535 uses solid phase extraction with a nonporous gr...

Urban Gardens as Sustainable Reuse - Considerations and Current Resources for Evaluating an Urban Gardens Site, In: SMARTe 2011, EPA/600/C-10/007

EPA Science Inventory

Urban gardening and agriculture is of increasing interest as a land revitalization option for interim as well as long term use, and is receiving increased attention, funding, and promotiion under EPA's Brownfields land redevelopment efforts. A broad range of state and local gove...

Environmental futures research at the U.S. Environmental Protection Agency

Treesearch

Robert L. Olson

2012-01-01

Relatively little research on environmental futures has been carried out in the United States. An exception is the long-running futures research that the U.S. Environmental Protection Agency (EPA) has been conducting since the 1970s. This paper reviews past and current efforts toward developing a capacity for environmental foresight within the EPA, and discusses some...

Chesapeake Bay Program Scientific and Technical Advisory Committee Workshop: Monitoring and Assessing Impacts of Changes in Weather Patterns and Extreme Events. "U.S. EPA National Stormwater Calculator"

EPA Science Inventory

Stormwater discharges continue to cause impairment of our Nation’s waterbodies. In order to reduce impairment, EPA has developed the National Stormwater Calculator (SWC) to help support local, state, and national stormwater management objectives and regulatory efforts to re...

DISSOLVED GAS TRANSPORT IN THE PRESENCE OF A TRAPPED GAS PHASE: DEVELOPMENT AND LABORATORY TESTING OF A TWO-DIMENSIONAL KINETIC MODEL. (R825689C012)

EPA Science Inventory

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

Constructing a Shared Mental Model for Faculty Development for the Core Entrustable Professional Activities for Entering Residency.

PubMed

Favreau, Michele A; Tewksbury, Linda; Lupi, Carla; Cutrer, William B; Jokela, Janet A; Yarris, Lalena M

2017-06-01

In 2014, the Association of American Medical Colleges identified 13 Core Entrustable Professional Activities for Entering Residency (Core EPAs), which are activities that entering residents might be expected to perform without direct supervision. This work included the creation of an interinstitutional concept group focused on faculty development efforts, as the processes and tools for teaching and assessing entrustability in undergraduate medical education (UME) are still evolving. In this article, the authors describe a conceptual framework for entrustment that they developed to better prepare all educators involved in entrustment decision making in UME. This framework applies to faculty with limited or longitudinal contact with medical students and to those who contribute to entrustment development or render summative entrustment decisions.The authors describe a shared mental model for entrustment that they developed, based on a critical synthesis of the EPA literature, to serve as a guide for UME faculty development efforts. This model includes four dimensions for Core EPA faculty development: (1) observation skills in authentic settings (workplace-based assessments), (2) coaching and feedback skills, (3) self-assessment and reflection skills, and (4) peer guidance skills developed through a community of practice. These dimensions form a conceptual foundation for meaningful faculty participation in entrustment decision making.The authors also differentiate between the UME learning environment and the graduate medical education learning environment to highlight distinct challenges and opportunities for faculty development in UME settings. They conclude with recommendations and research questions for future Core EPA faculty development efforts.

75 FR 52734 - Agency Information Collection Activities; Submission to OMB for Review and Approval; Cooling...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-08-27

... Facilities (Renewal), EPA ICR No. 2060.04, OMB Control No. 2040-0257 AGENCY: Environmental Protection Agency...: Cooling Water Intake Structure Phase II Existing Facilities (Renewal). ICR Numbers: EPA ICR No. 2060.04... (EPA ICR No. 2060.03) covers the last 2 years of the permit approval period (i.e., years 4 and 5 after...

75 FR 30753 - Regulated Navigation Area; Thea Foss and Wheeler-Osgood Waterways EPA Superfund Cleanup Site...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-02

... superfund cleanup remediation efforts. To more effectively protect those efforts, the Coast Guard is... cleanup remediation process in those waters. These caps consist of approximately three feet of sand and... remediation efforts that underlie the whole concept of the proposed RNA, and we would consult with the City of...

Large Aircraft Robotic Paint Stripping (LARPS) system and the high pressure water process

NASA Astrophysics Data System (ADS)

See, David W.; Hofacker, Scott A.; Stone, M. Anthony; Harbaugh, Darcy

1993-03-01

The aircraft maintenance industry is beset by new Environmental Protection Agency (EPA) guidelines on air emissions, Occupational Safety and Health Administration (OSHA) standards, dwindling labor markets, Federal Aviation Administration (FAA) safety guidelines, and increased operating costs. In light of these factors, the USAF's Wright Laboratory Manufacturing Technology Directorate and the Aircraft Division of the Oklahoma City Air Logistics Center initiated a MANTECH/REPTECH effort to automate an alternate paint removal method and eliminate the current manual methylene chloride chemical stripping methods. This paper presents some of the background and history of the LARPS program, describes the LARPS system, documents the projected operational flow, quantifies some of the projected system benefits and describes the High Pressure Water Stripping Process. Certification of an alternative paint removal method to replace the current chemical process is being performed in two phases: Process Optimization and Process Validation. This paper also presents the results of the Process Optimization for metal substrates. Data on the coating removal rate, residual stresses, surface roughness, preliminary process envelopes, and technical plans for process Validation Testing will be discussed.

Assessing the feasibility, cost, and utility of developing models of human performance in aviation

NASA Technical Reports Server (NTRS)

Stillwell, William

1990-01-01

The purpose of the effort outlined in this briefing was to determine whether models exist or can be developed that can be used to address aviation automation issues. A multidisciplinary team has been assembled to undertake this effort, including experts in human performance, team/crew, and aviation system modeling, and aviation data used as input to such models. The project consists of two phases, a requirements assessment phase that is designed to determine the feasibility and utility of alternative modeling efforts, and a model development and evaluation phase that will seek to implement the plan (if a feasible cost effective development effort is found) that results from the first phase. Viewgraphs are given.

CONSULTATION ON WAYS OF CONSIDERING THE RESULTS OF EPA'S NATIONAL SURVEY ON ENVIRONMENTAL MANAGEMENT OF ASTHMA AND CHILDRENS EXPOSURE TO ETS [NSEMA/CEE] FOR THE INDOOR ENVIRONMENTS DIVISIONS ASTHMA INITIATIVE.

EPA Science Inventory

EPA has completed the field phase and is engaged in the analysis phase of its National Survey on Environmental Management of Asthma and Children's Exposure to ETS [NSEMA/CEE]. This is a nation-wide survey on awareness of and existing attitudes toward asthma and its environmental ...

Love Canal monitoring program. Volume 1. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

This report summarizes the prime contractor activities during the monitoring phase of the Love Canal project. Since GCA Corporation was only responsible for data collection, no analytical results appear in this report. The program involved a multifaceted sampling and analytical effort designed to detect and quantify a variety of trace metals, volatile organics, pesticides and other compounds in soil, sediment, air, biota, and water samples. The principal purpose of these activities was to provide data with which EPA could assess the extent of environmental contamination in the Love Canal Area. Since the area declared as a National Emergency was extendedmore » from those homes directly surrounding the Love Canal dumpsite to a more general area on May 21, 1980, it had been determined that the overall exposure of residents must be established as quickly as possible. The program, therefore, was on an extremely tight schedule with field sampling activities to be completed by October 31, 1980. GCA organized its efforts into seven technical elements, each of which is discussed.« less

Superfund at work: Hazardous waste cleanup efforts nationwide, Spring 1993 (Harvey and Knott Drum Site, New Castle County, Delaware)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

From 1963 to 1969, two acres of the Harvey and Knott Drum site in New Castle County, Delaware served as an open dump and burning area for sanitary, municipal, and industrial wastes. Sludge, paint pigment, and solvents contaminated the site until the State of Delaware and the US Environmental Protection Agency (EPA) intervened in 1981. Site conditions required a combination of traditional cleanup measures. After the immediate health threats posed by the site were eliminated, EPA reached an innovative, mixed funding settlement for long-term cleanup with two parties responsible for the site contamination. The following actions highlight the success ofmore » the Superfund program: An emergency removal of contaminants reduced immediate environmental and public health effects; A rapid assessment of ground water safeguarded drinking water supplies; and The full cooperation of General Motors (GM) expedited implementation of the cleanup, valued at $3.2 million.« less

Procedures and Concepts of EPA's Ongoing Sensor Evaluation Efforts

EPA Science Inventory

The purpose of this research effort was to develop an understanding of what technology might prove valuable in conducting the next generation of air monitoring. Upon their discovery, such technologies were obtained in collaboration with inventors and commercial and research orga...

Children and Pesticides: New Approach to Considering Risk Is Partly in Place. Report to Congressional Requesters.

ERIC Educational Resources Information Center

Heinrich, Janet

The Food Quality Protection Act of 1996 (FQPA) requires that the Environmental Protection Agency (EPA), which regulates the use of pesticides at the federal level, reevaluate the amounts of pesticide residues allowed on or in food. The EPA immediately began efforts to consider the additional safety factor for children, using available methods and…

40 CFR 52.1620 - Identification of plan.

Code of Federal Regulations, 2010 CFR

2010-07-01

... EPA Office at 1445 Ross Avenue, Suite 700, Dallas, Texas, 75202-2733; the EPA, Air and Radiation..., August 8, 1986 Statewide 08/21/86 01/27/06, 71 FR 4490 New Mexico Visibility Protection Plan for Phase I...

Phase II - P3 Award Winners

EPA Pesticide Factsheets

Those teams that win one of EPA's P3 Awards are eligible to receive additional funding from EPA of up $75,000 to further develop their design, move it to the marketplace, or implement it in the field.

Supplementation with high-dose docosahexaenoic acid increases the Omega-3 Index more than high-dose eicosapentaenoic acid.

PubMed

Allaire, Janie; Harris, William S; Vors, Cécile; Charest, Amélie; Marin, Johanne; Jackson, Kristina Harris; Tchernof, André; Couture, Patrick; Lamarche, Benoît

2017-05-01

Recent studies suggest that eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids have distinct effects on cardiometabolic risk factors. The Omega-3 Index (O3I), which is calculated as the proportion of EPA and DHA in red blood cell (RBC) membranes, has been inversely associated with the risk of coronary heart diseases and coronary mortality. The objective of this study was to compare the effects of EPA and DHA supplementation on the O3I in men and women with abdominal obesity and subclinical inflammation. In a double-blind controlled crossover study, 48 men and 106 women with abdominal obesity and subclinical inflammation were randomized to a sequence of three treatment phases: 1-2.7g/d of EPA, 2-2.7g/d of DHA, and 3-3g/d of corn oil (0g of EPA+DHA). All supplements were provided as 3×1g capsules for a total of 3g/d. The 10-week treatment phases were separated by nine-week washouts. RBC membrane fatty acid composition and O3I were assessed at baseline and the end of each phase. Differences in O3I between treatments were assessed using mixed models for repeated measures. The increase in the O3I after supplementation with DHA (+5.6% compared with control, P<0.0001) was significantly greater than after EPA (+3.3% compared with control, P<0.0001; DHA vs. EPA, P<0.0001). Compared to control, DHA supplementation decreased (-0.8%, P<0.0001) while EPA increased (+2.5%, P<0.0001) proportion of docosapentaenoic acid (DPA) in RBCs (DHA vs. EPA, P<0.0001). The baseline O3I was higher in women than in men (6.3% vs. 5.8%, P=0.011). The difference between DHA and EPA in increasing the O3I tended to be higher in men than in women (+2.6% vs. +2.2% respectively, P for the treatment by sex interaction=0.0537). The increase in the O3I is greater with high dose DHA supplementation than with high dose EPA, which is consistent with the greater potency of DHA to modulate cardiometabolic risk factors. The extent to which such differences between EPA and DHA in increasing the O3I relates to long-term cardiovascular risk needs to be investigated in the future. Copyright © 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.

Mechanism of Growth Inhibition of Human Cancer Cells by Conjugated Eicosapentaenoic Acid, an Inhibitor of DNA Polymerase and Topoisomerase

PubMed Central

Yonezawa, Yuko; Yoshida, Hiromi; Mizushina, Yoshiyuki

2007-01-01

DNA topoisomerases (topos) and DNA polymerases (pols) are involved in many aspects of DNA metabolism such as replication reactions. We found that long chain unsaturated fatty acids such as polyunsaturated fatty acids (PUFA) (i.e., eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)) inhibited the activities of eukaryotic pols and topos in vitro, and the inhibitory effect of conjugated fatty acids converted from EPA and DHA (cEPA and cDHA) on pols and topos was stronger than that of normal EPA and DHA. cEPA and cDHA did not affect the activities of plant and prokaryotic pols or other DNA metabolic enzymes tested. cEPA was a stronger inhibitor than cDHA with IC50 values for mammalian pols and human topos of 11.0 – 31.8 and 0.5 – 2.5 μM, respectively. cEPA inhibited the proliferation of two human leukemia cell lines, NALM-6, which is a p53-wild type, and HL-60, which is a p53-null mutant, and the inhibitory effect was stronger than that of normal EPA. In both cell lines, cEPA arrested in the G1 phase, and increased cyclin E protein levels, indicating that it blocks the primary step of in vivo DNA replication by inhibiting the activity of replicative pols rather than topos. DNA replication-related proteins, such as RPA70, ATR and phosphorylated-Chk1/2, were increased by cEPA treatment in the cell lines, suggesting that cEPA led to DNA replication fork stress inhibiting the activities of pols and topos, and the ATR-dependent DNA damage response pathway could respond to the inhibitor of DNA replication. The compound induced cell apoptosis through both p53-dependent and p53-independent pathways in cell lines NALM-6 and HL-60, respectively. These results suggested the therapeutic potential of conjugated PUFA, such as cEPA, as a leading anti-cancer compound that inhibited pols and topos activities.

Icosapent ethyl: Eicosapentaenoic acid concentration and triglyceride-lowering effects across clinical studies.

PubMed

Bays, Harold E; Ballantyne, Christie M; Doyle, Ralph T; Juliano, Rebecca A; Philip, Sephy

2016-09-01

Icosapent ethyl is a high-purity prescription form of eicosapentaenoic acid (EPA) ethyl ester approved at a dose of 4g/day as an adjunct to diet to reduce triglyceride (TG) levels in adult patients with severe (≥500mg/dL) hypertriglyceridemia. This post-hoc exploratory analysis examined the relationship of icosapent ethyl dose with EPA concentrations in plasma and red blood cells (RBCs) across 3 clinical studies-a phase 1 pharmacokinetic study in healthy adult volunteers and 2 pivotal phase 3 studies (MARINE and ANCHOR) in adult patients with hypertriglyceridemia-and examined the relationship between EPA levels and TG-lowering effects in MARINE and ANCHOR. In all 3 studies, icosapent ethyl produced dose-dependent increases in the concentrations of EPA in plasma and RBCs. In both MARINE and ANCHOR, these dose-dependent EPA increases correlated with the degree of TG level lowering (all P<0.01). In patients with high TG levels (≥200mg/dL) and treated with icosapent ethyl 4g/day, the end-of-treatment plasma and RBC EPA concentrations were >170μg/mL and>70μg/mL, respectively. These studies support icosapent ethyl as producing predictable dose-dependent pharmacokinetics/pharmacodynamics, with TG level lowering dependent upon icosapent ethyl dose and EPA concentrations in plasma and RBCs. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

Investigation of waste incineration of fluorotelomer-based polymers as a potential source of PFOA in the environment.

PubMed

Taylor, P H; Yamada, T; Striebich, R C; Graham, J L; Giraud, R J

2014-09-01

In light of the widespread presence of perfluorooctanoic acid (PFOA) in the environment, a comprehensive laboratory-scale study has developed data requested by the U.S. Environmental Protection Agency (EPA) to determine whether municipal and/or medical waste incineration of commercial fluorotelomer-based polymers (FTBPs) at end of life is a potential source of PFOA that may contribute to environmental and human exposures. The study was divided into two phases (I and II) and conducted in accordance with EPA Good Laboratory Practices (GLPs) as described in the quality assurance project plan (QAPP) for each phase. Phase I testing determined that the PFOA transport efficiency across the thermal reactor system to be used in Phase II was greater than 90%. Operating at 1000°C over 2s residence time with 3.2-6.6mgdscm(-1) hydrogen fluoride (HF), corrected to 7% oxygen (O2), and continuously monitored exhaust oxygen of 13%, Phase II testing of the FTBP composites in this thermal reactor system yielded results demonstrating that waste incineration of fluorotelomer-based polymers does not result in the formation of detectable levels of PFOA under conditions representative of typical municipal waste combustor (MWC) and medical waste incinerator (MWI) operations in the U.S. Therefore, waste incineration of these polymers is not expected to be a source of PFOA in the environment. Copyright © 2014 Elsevier Ltd. All rights reserved.

EPA's proposed land ban regulations. Hearing before the Subcommittee on Commerce, Transportation, and Tourism of the Committee on Energy and Commerce, House of Representatives, Ninety-Ninth Congress, Second Session, February 19, 1986

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

1986-01-01

Three representatives of the Environmental Protection Agency (EPA) testified in response to questions over the agency's apparent approval of the land disposal of toxic materials in contradiction to the ban implicit in the Hazardous and Solid Waste Amendments of 1984. In new regulations, EPA interprets the ban as applying only when migration of toxic materials exceeds its screening levels. EPA also cites its screening levels to place a cap on waste treatment. At issue was EPA's effort to avoid the mandate of the 1984 legislation and its acceptance of screening levels which may assume a lower threat than actually exists.more » EPA representatives explained the rulemaking, and defended the use of screening levels as a basis for treatment and exemption. Additional material submitted for the record by the agency and by the House committee follows the testimony.« less

RARE PROJECT: QUANTIFYING THE IMPACT OF AN AUTOBODY SHOP COMPLIANCE ASSISTANCE PROGRAM IN LAWRENCE, MA ON SHOP EMISSIONS AND RESIDENTIAL EXPOSURES TO HDI AND OTHER ISOCYANTES

EPA Science Inventory

This is an ORD Regional Applied Research Effort (RARE) study with EPA Region 1. For the past several years Region 1 has been managing an EPA grant for an auto body shop compliance assistance project in Lawrence, MA to address residents' concerns about auto body shops as a source...

Sustainable Materials Management Challenge Data

EPA Pesticide Factsheets

Sustainable Materials Management (SMM) is a systemic approach to using and reusing materials more productively over their entire lifecycles. It represents a change in how our society thinks about the use of natural resources and environmental protection. By looking at a product's entire lifecycle we can find new opportunities to reduce environmental impacts, conserve resources, and reduce costs. There are multiple challenge programs available as part of the SMM program, including the Food Recovery Challenge, the Electronics Challenge, the Federal Green Challenge, and the WasteWise program. As part of EPA's Food Recovery Challenge, organizations pledge to improve their sustainable food management practices and report their results. The SMM Electronics Challenge encourages electronics manufacturers, brand owners and retailers to strive to send 100 percent of the used electronics they collect from the public, businesses and within their own organizations to third-party certified electronics refurbishers and recyclers. The Federal Green Challenge, a national effort under the EPA??s Sustainable Materials Management Program, challenges EPA and other federal agencies throughout the country to lead by example in reducing the federal government's environmental impact. EPA??s WasteWise encourages organizations and businesses to achieve sustainability in their practices and reduce select industrial wastes. WasteWise is part of EPA??s sustaina

INCREASED ENDOCRINE ACTIVITY OF XENOBIOTIC CHEMICALS AS MEDIATED BY METABOLIC ACTIVATION

EPA Science Inventory

This research is part of an effort to develop in vitro assays and QSARs applicable to untested chemicals on EPA inventories through study of estrogen receptor (ER) binding and estrogen mediated gene expression in fish. The current effort investigates metabolic activation of chemi...

Notification: Audit of EPA Customer Service Help Desks, Hotlines, and Clearinghouses

EPA Pesticide Factsheets

Project #OA-FY12-0570, November 29, 2012. The EPA Office of Inspector General (OIG) plans to begin the fieldwork phase of our audit of EPA’s customer service help desks, hotlines, and clearinghouses (customer service lines).

Notification: Fiscal Year 2015 Risk Assessment of EPA's Purchase Card and Convenience Check Programs

EPA Pesticide Factsheets

Project #OA-FY15-0064, August 26, 2015. The U.S. Environmental Protection Agency (EPA) Office oflnspector General (OIG) plans to begin the preliminary research phase ofauditing the agency's purchase card and convenience check programs.

A novel liquid chromatography/tandem mass spectrometry (LC-MS/MS) based bioanalytical method for quantification of ethyl esters of Eicosapentaenoic acid (EPA) and Docosahexaenoic acid (DHA) and its application in pharmacokinetic study.

PubMed

Viswanathan, Sekarbabu; Verma, P R P; Ganesan, Muniyandithevar; Manivannan, Jeganathan

2017-07-15

Omega-3 fatty acids are clinically useful and the two marine omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are prevalent in fish and fish oils. Omega-3 fatty acid formulations should undergo a rigorous regulatory step in order to obtain United States Food and Drug Administration (USFDA) approval as prescription drug. In connection with that, despite quantifying EPA and DHA fatty acids, there is a need for quantifying the level of ethyl esters of them in biological samples. In this study, we make use of reverse phase high performance liquid chromatography coupled with mass spectrometry (RP-HPLC-MS)technique for the method development. Here, we have developed a novel multiple reaction monitoring method along with optimized parameters for quantification of EPA and DHA as ethyl esters. Additionally, we attempted to validate the bio-analytical method by conducting the sensitivity, selectivity, precision accuracy batch, carryover test and matrix stability experiments. Furthermore, we also implemented our validated method for evaluation of pharmacokinetics of omega fatty acid ethyl ester formulations. Copyright © 2017 Elsevier B.V. All rights reserved.

International Cooperation

EPA Pesticide Factsheets

Through collaborative efforts with partners from around the world, EPA is working to facilitate commerce, promote sustainable development, protect vulnerable populations and engage diplomatically around the world.

Antibacterial activities of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) against planktonic and biofilm growing Streptococcus mutans.

PubMed

Sun, Mengjun; Dong, Jiachen; Xia, Yiru; Shu, Rong

2017-06-01

The aim of this study was to evaluate the potential antibacterial activities of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) against planktonic and biofilm modes of Streptococcus mutans (S. mutans). The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined. The effects on planktonic growth and biofilm metabolic activity were evaluated by growth curve determination and MTT assay, respectively. Then, colony forming unit (CFU) counting, scanning electron microscopy (SEM) and real-time PCR were performed to further investigate the actions of DHA and EPA on exponential phase-S. mutans. Confocal laser scanning microscopy (CLSM) was used to detect the influences on mature biofilms. The MICs of DHA and EPA against S. mutans were 100 μM and 50 μM, respectively; the MBC of both compounds was 100 μM. In the presence of 12.5 μM-100 μM DHA or EPA, the planktonic growth and biofilm metabolic activity were reduced in varying degrees. For exponential-phase S. mutans, the viable counts, the bacterial membranes and the biofilm-associated gene expression were damaged by 100 μM DHA or EPA treatment. For 1-day-old biofilms, the thickness was decreased and the proportion of membrane-damaged bacteria was increased in the presence of 100 μM DHA or EPA. These results indicated that, DHA and EPA possessed antibacterial activities against planktonic and biofilm growing S. mutans. Copyright © 2017 Elsevier Ltd. All rights reserved.

76 FR 8674 - Notice of a Public Meeting: Environmental Justice Considerations for Drinking Water Regulatory...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-15

... perchlorate and carcinogenic volatile organic compounds (VOCs). While the Agency is in the very preliminary stages of developing the regulatory efforts for perchlorate and carcinogenic VOCs, EPA plans to discuss..., Regulatory Determinations 3, perchlorate, and carcinogenic VOCs rulemaking efforts. Date and Location: The...

Consumer Product Data for Exposure Screening, Modeling and Prioritization, and Risk-based Decision Making

EPA Science Inventory

This presentation will provide an overview of the research efforts underway in EPA ORD's Chemicals for Safety and Sustainability research program which relate to providing information to prioritize chemicals in consumer products based on risk. It also describes effort to make dat...

Wastewater Collection System Toolbox | Eliminating Sanitary ...

EPA Pesticide Factsheets

2017-04-10

Communities across the United States are working to find cost-effective, long-term approaches to managing their aging wastewater infrastructure and preventing the problems that lead to sanitary sewer overflows. The Toolbox is an effort by EPA New England to provide examples of programs and educational efforts from New England and beyond.

Toxicological Responses of Fischer Rats to Naturally Occurring Asbestos Samples from the United States and Canada

EPA Science Inventory

To support risk assessment efforts, a comparative study was designed to provide understanding of the toxicity of different types of fibers encountered in EPA clean-up efforts. Physico-chemical properties, and consequentially toxicity, are likely to be different among various fib...

Evaluation of a low-cost commercially available extraction device for assessing lead bioaccessibility in contaminated soils.

PubMed

Nelson, Clay M; Gilmore, Thomas M; Harrington, M; Scheckel, Kirk G; Miller, Bradley W; Bradham, Karen D

2013-03-01

The U.S. EPA's in vitro bioaccessibility (IVBA) method 9200.1-86 defines a validated analytical procedure for the determination of lead bioaccessibility in contaminated soils. The method requires the use of a custom-fabricated extraction device that uses a heated water bath for sample incubation. In an effort to improve ease of use, increase sample throughput, and reduce equipment acquisition and maintenance costs, an alternative low-cost, commercially available extraction device capable of sample incubation via heated air and end-over-end rotation was evaluated. An intra-laboratory study was conducted to compare lead bioaccessibility values derived using the two extraction devices. IVBA values were not statistically different (α = 0.05) between the two extraction devices for any of the soils (n = 6) evaluated in this study, with an average difference in mean lead IVBA of 0.8% (s.d. = 0.5%). The commercially available extraction device was able to generate accurate lead IVBA data as compared to the U.S. EPA's expected value for a National Institute of Standards and Technology standard reference material soil. The relative percent differences between high and low IVBA values for each soil, a measure of instrument precision, were also not statistically different (α = 0.05) between the two extraction devices. The statistical agreement of lead IVBA values observed using the two extraction devices supports the use of a low-cost, commercially available extraction device as a reliable alternative to a custom-fabricated device as required by EPA method 9200.1-86.

Notification: Hotline Complaint Regarding the EPA Region 4 Environmental Justice Program

EPA Pesticide Factsheets

Project #OPE-FY12-0017, September 17, 2012. We have completed the preliminary research portion ofour evaluation, Hotline Complaint Regarding the EPA Region 4 Environmental Justice Program (OPE FY12-0017) and will now continue into the fieldwork phase.

ExpoCast: Exposure Science for Prioritization and Toxicity Testing (S)

EPA Science Inventory

The US EPA is completing the Phase I pilot for a chemical prioritization research program, called ToxCast. Here EPA is developing methods for using computational chemistry, high-throughput screening, and toxicogenomic technologies to predict potential toxicity and prioritize limi...

ExpoCast: Exposure Science for Prioritization and Toxicity Testing

EPA Science Inventory

The US EPA is completing the Phase I pilot for a chemical prioritization research program, called ToxCastTM. Here EPA is developing methods for using computational chemistry, high-throughput screening, and toxicogenomic technologies to predict potential toxicity and prioritize l...

The NASA pollution-reduction technology program for small jet aircraft engines

NASA Technical Reports Server (NTRS)

Fear, J. S.

1976-01-01

Three advanced combustor concepts, designed for the AiResearch TFE 731-2 turbofan engine, were evaluated in screening tests. Goals for carbon monoxide and unburned hydrocarbons were met or closely approached with two of the concepts with relatively modest departures from conventional combustor design practices. A more advanced premixing/prevaporizing combustor, while appearing to have the potential for meeting the oxides of nitrogen goal as well, will require extensive development to make it a practical combustion system. Smoke numbers for the two combustor concepts were well within the EPA smoke standard. Phase 2, Combustor-Engine Compatibility Testing, which is in its early stages, and planned Phase 3, Combustor-Engine Demonstration Testing, are also described.

NASA/Drexel program. [research effort in large-scale technical programs management for application to urban problems

NASA Technical Reports Server (NTRS)

1973-01-01

The results are reported of the NASA/Drexel research effort which was conducted in two separate phases. The initial phase stressed exploration of the problem from the point of view of three primary research areas and the building of a multidisciplinary team. The final phase consisted of a clinical demonstration program in which the research associates consulted with the County Executive of New Castle County, Delaware, to aid in solving actual problems confronting the County Government. The three primary research areas of the initial phase are identified as technology, management science, and behavioral science. Five specific projects which made up the research effort are treated separately. A final section contains the conclusions drawn from total research effort as well as from the specific projects.

Citizen Science Air Monitoring in the Ironbound Community ...

EPA Pesticide Factsheets

The Environmental Protection Agency’s (EPA) mission is to protect human health and the environment. To move toward achieving this goal, EPA is facilitating identification of potential environmental concerns, particularly in vulnerable communities. This includes actively supporting citizen science projects and providing communities with the information and assistance they need to conduct their own air pollution monitoring efforts. The Air Sensor Toolbox for Citizen Scientists1 was developed as a resource to meet stakeholder needs. Examples of materials developed for the Toolbox and ultimately pilot tested in the Ironbound Community in Newark, New Jersey are reported here. The Air Sensor Toolbox for Citizen Scientists is designed as an online resource that provides information and guidance on new, low-cost compact technologies used for measuring air quality. The Toolbox features resources developed by EPA researchers that can be used by citizens to effectively collect, analyze, interpret, and communicate air quality data. The resources include information about sampling methods, how to calibrate and validate monitors, options for measuring air quality, data interpretation guidelines, and low-cost sensor performance information. This Regional Applied Research Effort (RARE) project provided an opportunity for the Office of Research and Development (ORD) to work collaboratively with EPA Region 2 to provide the Ironbound Community with a “Toolbox” specific for c

Reformatted data sets used in the Cooperative LACSD/USGS Palos Verdes Flow Study, 2000--2008

USGS Publications Warehouse

Anderson, Todd; Rosenberger, Kurt J.; Gartner, Anne L.

2012-01-01

Beginning in 1997, the Environmental Protection Agency (EPA) defined a contaminated section of the Palos Verdes shelf in southern California as a Superfund site, initiating a continuing investigation of this area. A number of agencies, including the EPA, U.S. Geological Survey (USGS), and Science Applications International Corporation (SAIC), conducted two oceanographic measurement programs in 2004 and 2007-2008 (SAIC, 2004, 2005; Rosenberger and others, 2010; Sherwood and others, unpublished data) to improve our understanding of the natural processes that resuspend and transport sediment in the area, especially in the region southeast of the Whites Point ocean outfall where earlier measurements were thought to be deficient. Los Angeles County Sanitation Districts (LACSD) deployed a simpler but much broader array of instruments on the Palos Verdes shelf and within the northern reaches of San Pedro Bay from 2000 to 2008 in order to characterize the current and temperature patterns within these regions. This program overlapped the two programs run by USGS and other agencies in 2004 and 2007. The LACSD data were made available to the USGS and the EPA in order to support their joint efforts to model the transport of the contaminated sediments in the region. This report describes the LACSD data sets, the instruments and data-processing procedures used, and the archive that contains the data sets that have passed our quality-assurance procedures.

Managing Refrigerant Emissions

EPA Pesticide Factsheets

Access information on EPA's efforts to address ozone layer depletion by reducing emissions of refrigerants from stationary refrigeration and air conditioning systems and motor vehicle air conditioning systems.

Fundamental changes to EPA's research enterprise: the path forward.

PubMed

Anastas, Paul T

2012-01-17

Environmental protection in the United States has reached a critical juncture. It has become clear that to address the complex and interrelated environmental challenges we face, we must augment our traditional approaches. The scientific community must build upon its deep understanding of risk assessment, risk management, and reductionism with tools, technologies, insights and approaches to pursue sustainability. The U.S. Environmental Protection Agency (EPA) has recognized this need for systemic change by implementing a new research paradigm called "The Path Forward." This paper outlines the principles of the Path Forward and the actions taken since 2010 to align EPA's research efforts with the goal of sustainability.

Vessel Specific Levels

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

Return Vessels Special Reports

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

Roll Call Debris - Race

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

Return Vessel Specific Levels

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

Fleet Debris Levels

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

Special Report Debris - Race

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

S/V Family Affairs Obs

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

Family Affairs Obs - Return Voyage

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

EPA Determination Regarding the Consistency of the Elmendorf ENVVEST/XL Project Proposal and EPA's Guidance for Military Installations

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Improving the environment in urban areas

DOE Office of Scientific and Technical Information (OSTI.GOV)

Adamkus, V.V.

1994-12-31

The author discusses the need for improvements to the environment in urban areas, and efforts being made under the direction of the Environmental Protection Agency (EPA) to address these problems. The impact the new Clean Air Act can have on emissions from gasoline powered autos, diesel burning trucks, fixed emission sources ranging from utilities to chemical plants, and consumer products like hair sprays and charcoal starters, will all work together to improve air quality in urban areas. The author also discusses Brownfields Economic Redevelopment Plan efforts being supported by the EPA in a coordinated plan to get municipalities involved inmore » cleaning up areas with pollution, to remove the blight on the urban areas, provide new land for development, and promote additional jobs.« less

Review of atmospheric metallic elements in Asia during 2000-2004

NASA Astrophysics Data System (ADS)

Fang, Guor-Cheng; Wu, Yuh-Shen; Huang, Shih-Han; Rau, Jui-Yeh

Metallic element transfer through the atmosphere is a significant part of the biogeochemical cycle of these elements. Natural and anthropogenic were two processes which can increase heavy metal concentrations in the atmosphere. Atmospheric particulates, especially secondary anthropogenic fine particles (PM 2.5), have been influence human health. Generally speaking, the total daily mortality increases by approximately 1% for every 10 μg m -3 increase in PM 10 concentration (Lippmann, 1998). This is why the PM 10 and PM 2.5 measurements are included in the US ambient air quality standards (US-EPA, 1987 for PM 10; 1996 for PM 2.5) (Querol et al., 2001). In recent years, since the great efforts made by Taiwan government towards the reduction of O 3 and PM 10 concentrations by controlling the emission rates of local pollutants sources, the frequency of exceeded PSI has gradually decrease the value of 4.9% in 1999 (Taiwan EPA, 2000). Urban populations are exposed to metals in suspended particles and these are often well above natural background levels owing to anthropogenic processes (Espinosa et al., 2002). This results in elevated metal concentrations that can pose an important risk to human health. Understanding emissions from traffic includes identification of the sources, which is also crucial for designing control measures. Road traffic involves numerous potential sources of metals, combustion products from fuel and oil, wear products from tires, brake linings, bearings, coach and road construction materials, and re-suspension of soil and road dust. The different sample collection devices, pretreatment and analysis methods were discussed in this study. The purpose of this study arranges the atmospheric metallic elements investigations in Asia regions. The data obtained here can also help to understand the sources, concentration, phase distribution and health impact of atmospheric metallic elements in Asian countries.

COUPLED FREE AND DISSOLVED PHASE TRANSPORT: NEW SIMULATION CAPABILITIES AND PARAMETER INVERSION

EPA Science Inventory

The vadose zone free-phase simulation capabilities of the US EPA Hydrocarbon Spill Screening Model (HSSM)have been linked with the 3-D multi-species dissolved-phase contaminant transport simulator MT3DMS.

Effects of Food on the Pharmacokinetics of Omega-3-Carboxylic Acids in Healthy Japanese Male Subjects: A Phase I, Randomized, Open-label, Three-period, Crossover Trial.

PubMed

Shimada, Hitoshi; Nilsson, Catarina; Noda, Yoshinori; Kim, Hyosung; Lundström, Torbjörn; Yajima, Toshitaka

2017-09-01

Omega-3-carboxylic acids (OM3-CA) contain omega-3 free fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), as carboxylic acids. Food intake is known to affect the bioavailability of ethyl ester fatty acid formulations. We conducted a phase I study to investigate the effects of the timing of OM3-CA administration relative to food intake on the pharmacokinetics of EPA and DHA. In this randomized, open-label, three-period crossover study, Japanese healthy male subjects were administered 4×1 g OM3-CA capsules with continued fasting, before a meal, or after a meal. All subjects fasted for ≥10 h prior to drug/meal administration. The primary objective was to examine the effect of meal timing on the pharmacokinetics of EPA and DHA after OM3-CA administration. The secondary objectives were to examine the safety and tolerability of OM3-CA. A total of 42 Japanese subjects was enrolled in the study. The baseline-adjusted maximum concentration and area under the concentration-time curve from 0 to 72 h for EPA, DHA, and EPA +DHA were lower in the fasting and before meal conditions than in the after meal condition. The maximum total EPA, total DHA, and total EPA+DHA concentrations were reached later when administered in fasting conditions than in fed conditions, indicating slower absorption in fasting conditions. Diarrhea was reported by five, six, and no subjects in the fasting, before meal, and after meal conditions, respectively. The timing of OM3-CA administration relative to food intake influences the systemic bioavailability of EPA and DHA in healthy Japanese male subjects. NCT02372344.

Energy star. (Latest citations from the Computer database). Published Search

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

The bibliography contains citations concerning a collaborative effort between the Environmental Protection Agency (EPA) and private industry to reduce electrical power consumed by personal computers and related peripherals. Manufacturers complying with EPA guidelines are officially recognized by award of a special Energy Star logo, and are referred to in official documents as a vendor of green computers. (Contains a minimum of 81 citations and includes a subject term index and title list.)

Energy star. (Latest citations from the Computer database). Published Search

DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

The bibliography contains citations concerning a collaborative effort between the Environmental Protection Agency (EPA) and private industry to reduce electrical power consumed by personal computers and related peripherals. Manufacturers complying with EPA guidelines are officially recognized by award of a special Energy Star logo, and are referred to in official documents as a vendor of green computers. (Contains a minimum of 234 citations and includes a subject term index and title list.)

A Collaborative Effort to Assess Environmental Health in ...

EPA Pesticide Factsheets

The Region 3 “Making a Visible Difference in Communities” (MVD) initiative for Southeast Newport News, VA has taken a community-centric, place-based approach to identifying and delivering service to the area’s residents and the city as a whole. Beginning with a CARE (Community Action for a Renewed Environment) Level 1 cooperative agreement (a grant with substantial government involvement and required outputs) in 2011, Region 3 funding helped to establish the Southeast CARE Coalition (“the Coalition”), and quickly formed a bond with the organization. Two years later, Region 3, the US EPA Office of Research and Development (ORD) and the Coalition embarked on a scientific, socio-demographic Regional Sustainable Environmental Science (RESES) research project to assess local pollutant sources and their potential impacts to the community. These efforts helped EPA select Newport News as an MVD community, resulting in an expanded partnership that now includes the City of Newport News. Through this association and the MVD designation, the partners have identified and prioritized environmental and other concerns (e.g., improving air and water quality, adapting to extreme weather, promoting equitable development, improving transportation). Newport News has recently held workshops and training on topics such as environmental health, asthma, weather events, and equitable development, and continues to improve the community’s health, its knowledge of the relevant e

Charles River

EPA Pesticide Factsheets

Information on the efforts of the US EPA, the Commonwealth of Massachusetts, the municipalities within the Charles River Watershed and nongovernmental organizations to improve the water quality of the Charles River.

Children's Environmental Health Web Links

EPA Pesticide Factsheets

Get additional information from non-EPA sites on specialized pediatric research efforts, toxicant exposure and susceptibility, pediatric environmental medicine, prevention, public awareness, and the Global Plan of Action.

The U.S. EPA's ToxCast Chemical Screening Program and Predictive Modeling of Toxicity

EPA Science Inventory

The ToxCast program was developed by the U.S. EPA's National Center for Computational Toxicology to provide cost-effective high-throughput screening for the potential toxicity of thousands of chemicals. Phase I screened 309 compounds in over 500 assays to evaluate concentration-...

76 FR 43230 - National Pollutant Discharge Elimination System-Cooling Water Intake Structures at Existing...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-20

... Facilities and Phase I Facilities AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule...) of the Clean Water Act for all existing power generating facilities and existing manufacturing and industrial facilities. EPA requested that public comments on the proposal be submitted on or before July 19...

Economic Impacts of the Category 3 Marine Rule on Great Lakes Shipping

EPA Science Inventory

This is a scenario-based economic assessment of the impacts of EPA’s Category 3 Marine Diesel Engines Rule on certain cargo movements in the Great Lakes shipping network. During the proposed phase of the rulemaking, Congress recommended that EPA conduct such a study, and EPA wil...

Developing End-of-Training Entrustable Professional Activities for Psychiatry: Results and Methodological Lessons.

PubMed

Young, John Q; Hasser, Caitlin; Hung, Erick K; Kusz, Martin; O'Sullivan, Patricia S; Stewart, Colin; Weiss, Andrea; Williams, Nancy

2018-07-01

To develop entrustable professional activities (EPAs) for psychiatry and to demonstrate an innovative, validity-enhancing methodology that may be relevant to other specialties. A national task force employed a three-stage process from May 2014 to February 2017 to develop EPAs for psychiatry. In stage 1, the task force used an iterative consensus-driven process to construct proposed EPAs. Each included a title, full description, and relevant competencies. In stage 2, the task force interviewed four nonpsychiatric experts in EPAs and further revised the EPAs. In stage 3, the task force performed a Delphi study of national experts in psychiatric education and assessment. All survey participants completed a brief training program on EPAs. Quantitative and qualitative analysis led to further modifications. Essentialness was measured on a five-point scale. EPAs were included if the content validity index was at least 0.8 and the lower end of the asymmetric confidence interval was not lower than 4.0. Stages 1 and 2 yielded 24 and 14 EPAs, respectively. In stage 3, 31 of the 39 invited experts participated in both rounds of the Delphi study. Round 1 reduced the proposed EPAs to 13. Ten EPAs met the inclusion criteria in Round 2. The final EPAs provide a strong foundation for competency-based assessment in psychiatry. Methodological features such as critique by nonpsychiatry experts, a national Delphi study with frame-of-reference training, and stringent inclusion criteria strengthen the content validity of the findings and may serve as a model for future efforts in other specialties.

Community radiation monitoring program. Annual report, October 1, 1992--September 30, 1993

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cooper, E.N.

1994-08-01

The Community Radiation Monitoring Program (CRMP) is a cooperative effort between the US Department of Energy (DOE), the US Environmental Protection Agency (EPA), the Desert Research Institute (DRI), a division of the University and Community College System of Nevada, and the Nuclear Engineering Laboratory of the University of Utah (UUNEL). The thirteenth year of this program began in the fall of 1992, and the work continues as an integral part of the DOE--sponsored long-term offsite radiological monitoring effort that has been conducted by EPA and its predecessors since the inception of nuclear testing at the Nevada Test Site (NTS). Themore » CRMP began by enhancing and centralizing environmental monitoring and sampling equipment at 15 communities in the then-existing EPA monitoring network around the NTS, and has since expanded to 19 locations in Nevada, Utah, and California. The primary objectives of this program are still to increase the understanding by the people who live in the area surrounding the NTS of the activities for which DOE is responsible, to enhance the performance of radiological sampling and monitoring, and to inform all concerned of the results of these efforts. One of the primary methods used to improve the communication link with the people in the potentially impacted area has been the hiring and training of local citizens as Station Managers and program representatives in those selected communities in the offsite area. These mangers, active science teachers wherever possible, have succeeded through their training, experience, community standing, and effort in becoming a very visible, able, and valuable asset in this link.« less

Mystic River Watershed

EPA Pesticide Factsheets

Information on the efforts of the US EPA, the Commonwealth of Massachusetts, the municipalities within the Mystic River Watershed and nongovernmental organizations to improve the water quality of the Mystic River.

INDEPENDENT REVIEW OF THE X-701B GROUNDWATER REMEDY, PORTSMOUTH, OHIO: TECHNICAL EVALUATION AND RECOMMENDATIONS

DOE Office of Scientific and Technical Information (OSTI.GOV)

Looney, B.; Eddy-Dilek, C.; Costanza, J.

2008-12-15

The Department of Energy Portsmouth Paducah Project Office requested assistance from Department of Energy Office of Environmental Management (EM-22) to provide independent technical experts to evaluate past and ongoing remedial activities at the Portsmouth facility that were completed to address TCE contamination associated with the X-701B groundwater plume and to make recommendations for future efforts. The Independent Technical Review team was provided with a detailed and specific charter. The charter requested that the technical team first review the past and current activities completed for the X-701B groundwater remedy for trichloroethene (TCE) in accordance with a Decision Document that was issuedmore » by Ohio EPA on December 8, 2003 and a Work Plan that was approved by Ohio EPA on September 22, 2006. The remedy for X-701B divides the activities into four phases: Phase I - Initial Source Area Treatment, Phase II - Expanded Source Area Treatment, Phase III - Evaluation and Reporting, and Phase IV - Downgradient Remediation and Confirmation of Source Area Treatment. Phase I of the remedy was completed during FY2006, and DOE has now completed six oxidant injection events within Phase II. The Independent Technical Review team was asked to evaluate Phase II activities, including soil and groundwater results, and to determine whether or not the criteria that were defined in the Work Plan for the Phase II end point had been met. The following criteria are defined in the Work Plan as an acceptable Phase II end point: (1) Groundwater samples from the identified source area monitoring wells have concentrations below the Preliminary Remediation Goal (PRG) for TCE in groundwater, or (2) The remedy is no longer effective in removing TCE mass from the source area. In addition, the charter specifies that if the Review Team determines that the Phase II endpoint has not been reached, then the team should address the following issues: (1) If additional injection events are recommended, the team should identify the type of injection and target soil horizon for these injections; (2) Consider the feasibility of declaring Technical Impracticability and proceeding with the RCRA Cap for the X-701B; and (3) Provide a summary of other cost-effective technologies that could be implemented (especially for the lower Gallia). The Independent Technical Review team focused its evaluation solely on the X-701B source zone and contaminant plume. It did not review current or planned remedial activities at other plumes, waste areas, or landfills at the Portsmouth site, nor did it attempt to integrate such activities into its recommendations for X-701B. However, the ultimate selection of a remedy for X-701B by site personnel and regulators should take into account potentially synergistic efforts at other waste areas. Assessment of remedial alternatives in the context of site-wide management practices may reveal opportunities for leveraging and savings that would not otherwise be identified. For example, the cost of source-zone excavation or construction of a permeable reactive barrier at X-701B might be substantially reduced if contaminated soil could be buried on site at an existing or planned landfill. This allowance would improve the feasibility and competitiveness of both remedies. A comprehensive examination of ongoing and future environmental activities across the Portsmouth Gaseous Diffusion Plant is necessary to optimize the selection and timing of X-701B remediation with respect to cleanup efficiency, safety, and economics. A selected group of technical experts attended the technical workshop at the Portsmouth Gaseous Diffusion Plant from November 18 through 21, 2008. During the first day of the workshop, both contractor and DOE site personnel briefed the workshop participants and took them on a tour of the X-701B site. The initial briefing was attended by representatives of Ohio EPA who participated in the discussions. On subsequent days, the team reviewed baseline data and reports, were provided additional technical information from site personnel, evaluated work plans, determined critical issues and uncertainties, and recommended alternatives. This report documents the findings and recommendations of the independent technical review team.« less

75 FR 31513 - Prevention of Significant Deterioration and Title V Greenhouse Gas Tailoring Rule

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-03

...EPA is tailoring the applicability criteria that determine which stationary sources and modification projects become subject to permitting requirements for greenhouse gas (GHG) emissions under the Prevention of Significant Deterioration (PSD) and title V programs of the Clean Air Act (CAA or Act). This rulemaking is necessary because without it PSD and title V requirements would apply, as of January 2, 2011, at the 100 or 250 tons per year (tpy) levels provided under the CAA, greatly increasing the number of required permits, imposing undue costs on small sources, overwhelming the resources of permitting authorities, and severely impairing the functioning of the programs. EPA is relieving these resource burdens by phasing in the applicability of these programs to GHG sources, starting with the largest GHG emitters. This rule establishes two initial steps of the phase-in. The rule also commits the agency to take certain actions on future steps addressing smaller sources, but excludes certain smaller sources from PSD and title V permitting for GHG emissions until at least April 30, 2016.

Analysis of Anion Distributions in the Developing Strata of a Constructed Wetland Used for Chlorinated Ethene Remediation

DTIC Science & Technology

2003-03-01

and landfills. Classified as dense non-aqueous phase liquids (DNAPLs) because of their high density and relatively low solubility in water ...Environmental Protection Agency (EPA) recommendations (U.S. EPA, 1992). Water was purged from the top of the piezometric head, to ensure full...that which is recognized by the EPA as “ low -flow purging,” fresh water within the well screen was hydraulically isolated from any stagnant water in the

Structure and vulnerability of Pacific Northwest tidal wetlands – A summary of wetland climate change research by the Western Ecology Division, U.S. EPA

USGS Publications Warehouse

Folger, Christina L; Lee, Henry; Janousek, Christopher N.; Reusser, Deborah A.

2014-01-01

Climate change poses a serious threat to the tidal wetlands of the Pacific Northwest (PNW) region of the U.S. In response to this threat, scientists at the Western Ecology Division of the U.S. EPA at and the Western Fisheries Research Center of the U.S. Geological Survey, along with other partners, initiated a series of studies on the structure and vulnerability of tidal wetlands to climate change. One research thrust was to evaluate community structure of PNW marshes, experimentally assess the vulnerability of marsh plants to inundation and salinity stress (as would happen with sea level rise), and evaluate the utility of the National Wetland Inventory (NWI) classification system. Another research thrust was to develop tools that provide insights into possible impacts of climate change. This effort included enhancing the Sea Level Affecting Marshes Model (SLAMM) to predict the effects of sea level rise on submerged aquatic vegetation (Zostera marina) distributions, evaluating changes in river flow into coastal estuaries in response to precipitation changes, and synthesizing Pacific Coast estuary, watershed, and climate data in a downloadable tool. Because the research resulting from these efforts was published in multiple venues, we summarized them in this document. We anticipate that future research efforts by the U.S. EPA will continue with a focus on climate change impacts on a regional scale.

Indiana application for interim authorization, phase I, hazardous waste management program--Environmental Protection Agency. Notice of public hearing and public comment period.

PubMed

1982-04-12

EPA regulations to protect human health and the environment from the improper management of hazardous waste were published in the Federal Register on May 19, 1980 (45 FR 33063). These regulations include provisions for authorization of State programs to operate in lieu of the Federal program. Today EPA is announcing the availability for public review of the Indiana application for Phase I Interim Authorization, inviting public comment, and giving notice of a public hearing to be held on the application.

Lower Merrimack River

EPA Pesticide Factsheets

Information on the efforts of the US EPA, the Commonwealth of Massachusetts, the municipalities within the Lower Merrimack River and nongovernmental organizations to improve the water quality of the Lower Merrimack River.

EPA Collaboration with Europe

EPA Pesticide Factsheets

By working together to achieve common goals, the U.S. and Europe can enhance our respective environmental protection efforts while creating a cleaner environment on both continents and around the world.

Nonessential Products Ban Program

EPA Pesticide Factsheets

Learn about EPA's efforts to address ozone layer depletion by banning the sale and introduction into interstate commerce of certain non-essential products manufactured with or containing ozone-depleting substances.

Responses of Fischer Rats to Intratracheal Instillations of PM2.5 Samples of Libby Amphibole (LA), Sumas Mountain Chrysotile, EI Dorado Tremolite, and Ontario Actinolite.

EPA Science Inventory

To support risk assessment efforts, a comparative intratracheal instillation (IT) study is being conducted to provide mechanistic understanding of the toxicity of different types of fibers encountered in EPA clean-up efforts. While other types of asbestos have been shown to cause...

Energy star. (Latest citations from the Computer database). Published Search

DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

The bibliography contains citations concerning a collaborative effort between the Environmental Protection Agency (EPA) and private industry to reduce electrical power consumed by personal computers and related peripherals. Manufacturers complying with EPA guidelines are officially recognized by award of a special Energy Star logo, and are referred to in official documents as a vendor of green computers. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

Bridging the gap between regulatory acceptance and industry use of non-animal methods.

PubMed

Clippinger, Amy J; Hill, Erin; Curren, Rodger; Bishop, Patricia

2016-01-01

Collaboration between industry and regulators resulted in the development of a decision tree approach using in vitro or ex vivo assays to replace animal tests when determining the eye irritation potential of antimicrobial cleaning products (AMCPs) under the United States Environmental Protection Agency (EPA) Office of Pesticide Programs' hazard classification and labeling system. A policy document issued by the EPA in 2013 and updated in 2015 describes the alternate testing framework that industry could apply to new registrations of AMCPs and, on a case-by-case basis, to conventional pesticide products. Despite the collaborative effort, the availability of relevant non-animal methods, and the EPA's change in policy, only a limited number of AMCPs have been registered using the framework. Companies continue to conduct animal tests when registering AMCPs due to various challenges surrounding adoption of the new testing framework; however, recent discussions between industry, regulators, and other interested parties have identified ways these challenges may be overcome. In this article we explore how use of the alternate framework could be expanded through efforts such as increasing international harmonization, more proactively publicizing the framework, and enhancing the training of regulatory reviewers. Not only can these strategies help to increase use of the EPA alternate eye irritation framework, they can also be applied to facilitate the uptake of other alternative approaches to animal testing in the future.

San Francisco Bay Area Base Line Trash Loading (25001 - 50000 gal/yr)

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

San Francisco Bay Area Base Line Trash Loading (0-2500 gal/yr)

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

San Francisco Bay Area Base Line Trash Loading (2501 - 5000 gal/yr)

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

San Francisco Bay Area Base Line Trash Loading (5000 - 25000 gal/yr)

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

San Francisco Bay Area Base Line Trash Reduction - over 50,000 gal/yr

EPA Pesticide Factsheets

Marine debris degrades ocean habitats, endangers marine and coastal wildlife, causes navigation hazards, results in economic losses to industry and governments, and threatens human health and safety. EPA Pacific Southwest (Region 9) is tapping existing programs and resources to advance the prevention, reduction and clean-up of marine debris in the North Pacific Ocean. EPA Pacific Southwest activities build upon specific recommendations of the Interagency Marine Debris Coordinating Committee by targeting threats and sources of debris and responding to debris impacts. EPA is initiating a three-pronged effort to reduce sources of marine debris, prevent trash from entering the oceans, and assess the human and ecosystem impacts and potential for cleanup.

Ports Initiative

EPA Pesticide Factsheets

EPA's Ports Initiative works in collaboration with the port industry, communities, and government to improve environmental performance and increase economic prosperity. This effort helps people near ports breath cleaner air and live better lives.

EPA Efforts in the Middle East

EPA Pesticide Factsheets

US EPA’s environmental cooperation in the Middle East focuses on capacity building in environmental governance, water pollution and water security, clean fuels and vehicles, public participation, and pollution prevention.

The Toxicity Data Landscape for Environmental Chemicals

PubMed Central

Judson, Richard; Richard, Ann; Dix, David J.; Houck, Keith; Martin, Matthew; Kavlock, Robert; Dellarco, Vicki; Henry, Tala; Holderman, Todd; Sayre, Philip; Tan, Shirlee; Carpenter, Thomas; Smith, Edwin

2009-01-01

Objective Thousands of chemicals are in common use, but only a portion of them have undergone significant toxicologic evaluation, leading to the need to prioritize the remainder for targeted testing. To address this issue, the U.S. Environmental Protection Agency (EPA) and other organizations are developing chemical screening and prioritization programs. As part of these efforts, it is important to catalog, from widely dispersed sources, the toxicology information that is available. The main objective of this analysis is to define a list of environmental chemicals that are candidates for the U.S. EPA screening and prioritization process, and to catalog the available toxicology information. Data sources We are developing ACToR (Aggregated Computational Toxicology Resource), which combines information for hundreds of thousands of chemicals from > 200 public sources, including the U.S. EPA, National Institutes of Health, Food and Drug Administration, corresponding agencies in Canada, Europe, and Japan, and academic sources. Data extraction ACToR contains chemical structure information; physical–chemical properties; in vitro assay data; tabular in vivo data; summary toxicology calls (e.g., a statement that a chemical is considered to be a human carcinogen); and links to online toxicology summaries. Here, we use data from ACToR to assess the toxicity data landscape for environmental chemicals. Data synthesis We show results for a set of 9,912 environmental chemicals being considered for analysis as part of the U.S. EPA ToxCast screening and prioritization program. These include high-and medium-production-volume chemicals, pesticide active and inert ingredients, and drinking water contaminants. Conclusions Approximately two-thirds of these chemicals have at least limited toxicity summaries available. About one-quarter have been assessed in at least one highly curated toxicology evaluation database such as the U.S. EPA Toxicology Reference Database, U.S. EPA Integrated Risk Information System, and the National Toxicology Program. PMID:19479008

Abandoned Uranium Mines (AUM) Site Screening Map Service, 2016, US EPA Region 9

EPA Pesticide Factsheets

As described in detail in the Five-Year Report, US EPA completed on-the-ground screening of 521 abandoned uranium mine areas. US EPA and the Navajo EPA are using the Comprehensive Database and Atlas to determine which mines should be cleaned up first. US EPA continues to research and identify Potentially Responsible Parties (PRPs) under Superfund to contribute to the costs of cleanup efforts.This US EPA Region 9 web service contains the following map layers:Abandoned Uranium Mines, Priority Mines, Tronox Mines, Navajo Environmental Response Trust Mines, Mines with Enforcement Actions, Superfund AUM Regions, Navajo Nation Administrative Boundaries and Chapter Houses.Mine points have a maximum scale of 1:220,000, while Mine polygons have a minimum scale of 1:220,000. Chapter houses have a minimum scale of 1:200,000. BLM Land Status has a minimum scale of 1:150,000.Full FGDC metadata records for each layer can be found by clicking the layer name at the web service endpoint and viewing the layer description. Data used to create this web service are available for download at https://edg.epa.gov/metadata/catalog/data/data.page.Security Classification: Public. Access Constraints: None. Use Constraints: None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.

SUSTAINABLE MANAGEMENT APPROACHES AND REVITALIZATION TOOLS - ELECTRONIC (SMARTE), A DECISION SUPPORT TOOL TO EVALUATE FUTURE REUSE SCENARIOS

EPA Science Inventory

In 2000, the United States Environmental Protection Agency (EPA) and the German Federal Ministry of Education and Research (BMBF) began Phase 3 of the U.S.-German Bilateral Working Group. EPA and BMBF have an ongoing partnership designed to gain an understanding of each country's...

NATIONAL HUMAN EXPOSURE ASSESSMENT SURVEY (NHEXAS): ANALYSIS OF EXPOSURE PATHWAYS AND ROUTES FOR ARSENIC AND LEAD IN EPA REGION 5

EPA Science Inventory

The National Human Exposure Assessment Survey (NHEXAS) Phase I field study conducted in EPA Region 5 (Great Lakes Area) provides extensive exposure data on a representative sample of approximately 250 residents of the region. Associated environmental media and biomarker (blood...

Universal real-time highway information system development program : final report phase II.

DOT National Transportation Integrated Search

2009-01-01

The final phase of a two phase effort was undertaken to establish data forms and communication protocols to provide the New York State Department of Transportation access to the unique highway data resource, HIVIS developed in the initial phase of th...

Addressing Ozone Layer Depletion

EPA Pesticide Factsheets

Access information on EPA's efforts to address ozone layer depletion through regulations, collaborations with stakeholders, international treaties, partnerships with the private sector, and enforcement actions under Title VI of the Clean Air Act.

NAPL: SIMULATOR DOCUMENTATION (EPA/600/SR-97/102)

EPA Science Inventory

A mathematical and numerical model is developed to simulate the transport and fate of NAPLs (Non-Aqueous Phase Liquids) in near-surface granular soils. The resulting three-dimensional, three phase simulator is called NAPL. The simulator accommodates three mobile phases: water, NA...

Microanalytical Efforts in Support of NASA's Materials Science Programs

NASA Technical Reports Server (NTRS)

Gillies, Donald C.

2004-01-01

Following a brief overview of NASA s Microgravity Materials Science programs, specific examples will be given showing electron beam and optical microscopic applications to two-phase glass structures, dendrite tip radii, solid solution semiconductors, undercooled two-phase stainless steels and meteorites.

High Efficiency Thin Film CdTe and a-Si Based Solar Cells: Final Technical Report, 4 March 1998--15 October 2001

DOE Office of Scientific and Technical Information (OSTI.GOV)

Compaan, A. D.; Deng, X.; Bohn, R. G.

2003-10-01

This is the final report covering about 42 months of this subcontract for research on high-efficiency CdTe-based thin-film solar cells and on high-efficiency a-Si-based thin-film solar cells. Phases I and II have been extensively covered in two Annual Reports. For this Final Report, highlights of the first two Phases will be provided and then detail will be given on the last year and a half of Phase III. The effort on CdTe-based materials is led by Prof. Compaan and emphasizes the use of sputter deposition of the semiconductor layers in the fabrication of CdS/CdTe cells. The effort on high-efficiency a-Simore » materials is led by Prof. Deng and emphasizes plasma-enhanced chemical vapor deposition for cell fabrication with major efforts on triple-junction devices.« less

Establishing sustainable GHG inventory systems in African countries for Agriculture and Land Use, Land-use Change and Forestry (LULUCF)

NASA Astrophysics Data System (ADS)

Wirth, T. C.; Troxler, T.

2015-12-01

As signatories to the United Nations Framework Convention on Climate Change (UNFCCC), developing countries are required to produce greenhouse gas (GHG) inventories every two years. For many developing countries, including many of those in Africa, this is a significant challenge as it requires establishing a robust and sustainable GHG inventory system. In order to help support these efforts, the U.S. Environmental Protection Agency (EPA) has worked in collaboration with the UNFCCC to assist African countries in establishing sustainable GHG inventory systems and generating high-quality inventories on a regular basis. The sectors we have focused on for these GHG inventory capacity building efforts in Africa are Agriculture and Land Use, Land-use Change and Forestry (LULUCF) as these tend to represent a significant portion of their GHG emissions profile and the data requirements and methodologies are often more complex than for other sectors. To support these efforts, the U.S. EPA has provided technical assistance in understanding the methods in the IPCC Guidelines, assembling activity data and emission factors, including developing land-use maps for representing a country's land base, and implementing the calculations. EPA has also supported development of various tools such as a Template Workbook that helps the country build the institutional arrangement and strong documentation that are necessary for generating GHG inventories on a regular basis, as well as performing other procedures as identified by IPCC Good Practice Guidance such as quality assurance/quality control, key category analysis and archiving. Another tool used in these projects and helps country's implement the methods from the IPCC Guidelines for the Agriculture and LULUCF sectors is the Agriculture and Land Use (ALU) tool. This tool helps countries assemble the activity data and emission factors, including supporting the import of GIS maps, and applying the equations from the IPPC Guidelines to estimate the carbon stock changes and emissions of non-CO2 GHG for all land uses and management practices as identified in the IPCC Guidelines at the Tier 1 or Tier 2 level.

Center for Corporate Climate Leadership Goal Setting

EPA Pesticide Factsheets

EPA provides tools and recognition for companies setting aggressive GHG reduction goals, which can galvanize reduction efforts at a company and often leads to the identification of many additional reduction opportunities.

Research Roadmaps

EPA Pesticide Factsheets

These Roadmaps identify scientific gaps that inform the National Research Programs in the development of their Strategic Research Action Plans. EPA expects to use this approach to integrate existing research efforts and to identify needed work.

CHEMICAL SAFETY ALERTS-

EPA Science Inventory

Chemical Safety Alerts are short publications which explain specific hazards that have become evident through chemical accident investigation efforts. EPA has produced over a dozen Alerts to date. This year's Alert: Managing Chemical Reactivity Hazards

Environmental Protection in Indian Country

EPA Pesticide Factsheets

EPA's efforts to protect human health and the environment of federally recognized Indian tribes by supporting implementation of federal environmental laws consistent with the federal trust responsibility, and the government-to-government relationship.

Validation of Rapid Radiochemical Method for Californium ...

EPA Pesticide Factsheets

Technical Brief In the event of a radiological/nuclear contamination event, the response community would need tools and methodologies to rapidly assess the nature and the extent of contamination. To characterize a radiologically contaminated outdoor area and to inform risk assessment, large numbers of environmental samples would be collected and analyzed over a short period of time. To address the challenge of quickly providing analytical results to the field, the U.S. EPA developed a robust analytical method. This method allows response officials to characterize contaminated areas and to assess the effectiveness of remediation efforts, both rapidly and accurately, in the intermediate and late phases of environmental cleanup. Improvement in sample processing and analysis leads to increased laboratory capacity to handle the analysis of a large number of samples following the intentional or unintentional release of a radiological/nuclear contaminant.

The Role of Monitoring in Controlling Water Pollution

NASA Technical Reports Server (NTRS)

Hirsch, Allan

1971-01-01

The purpose of this paper is to provide an overview of trends in the national water pollution control effort and to describe the role of monitoring in that effort, particularly in relation to the responsibilities of the Environmental Protection Agency (EPA). I hope the paper will serve as a useful framework for the more specific discussions of monitoring technology to follow.

Remedial investigation/feasibility study for the Clinch River/Poplar Creek operable unit. Volume 5. Appendixes G, H, I, J

DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

1995-09-01

The Quality Assurance/Quality Control (QA/QC) Program for Phase 2 of the Clinch River Remedial Investigation (CRRI) was designed to comply with both Department of Energy (DOE) Order 5700.6C and Environmental Protection Agency (EPA) QAMS-005/80 (EPA 1980a) guidelines. QA requirements and the general QA objectives for Phase 2 data were defined in the Phase 2 Sampling and Analysis Plan (SAP)-Quality Assurance Project Plan, and scope changes noted in the Phase 2 Sampling and Analysis Plan Addendum. The QA objectives for Phase 2 data were the following: (1) Scientific data generated will withstand scientific and legal scrutiny. (2) Data will be gatheredmore » using appropriate procedures for sample collection, sample handling and security, chain of custody (COC), laboratory analyses, and data reporting. (3) Data will be of known precision and accuracy. (4) Data will meet data quality objectives (DQOs) defined in the Phase 2 SAP.« less

40 CFR 35.1650-3 - Conditions on award.

Code of Federal Regulations, 2011 CFR

2011-07-01

... non-Federal share of the project costs. (b) Phase 1. Phase 1 projects are subject to the following conditions: (1) The recipient must receive EPA project officer approval on any changes to satisfy the... additional work under the project. (c) Phase 2. Phase 2 projects are subject to the following conditions: (1...

40 CFR 35.1650-3 - Conditions on award.

Code of Federal Regulations, 2010 CFR

2010-07-01

... non-Federal share of the project costs. (b) Phase 1. Phase 1 projects are subject to the following conditions: (1) The recipient must receive EPA project officer approval on any changes to satisfy the... additional work under the project. (c) Phase 2. Phase 2 projects are subject to the following conditions: (1...

40 CFR 35.1650-3 - Conditions on award.

Code of Federal Regulations, 2014 CFR

2014-07-01

... non-Federal share of the project costs. (b) Phase 1. Phase 1 projects are subject to the following conditions: (1) The recipient must receive EPA project officer approval on any changes to satisfy the... additional work under the project. (c) Phase 2. Phase 2 projects are subject to the following conditions: (1...

40 CFR 35.1650-3 - Conditions on award.

Code of Federal Regulations, 2012 CFR

2012-07-01

... non-Federal share of the project costs. (b) Phase 1. Phase 1 projects are subject to the following conditions: (1) The recipient must receive EPA project officer approval on any changes to satisfy the... additional work under the project. (c) Phase 2. Phase 2 projects are subject to the following conditions: (1...

40 CFR 35.1650-3 - Conditions on award.

Code of Federal Regulations, 2013 CFR

2013-07-01

... non-Federal share of the project costs. (b) Phase 1. Phase 1 projects are subject to the following conditions: (1) The recipient must receive EPA project officer approval on any changes to satisfy the... additional work under the project. (c) Phase 2. Phase 2 projects are subject to the following conditions: (1...

Enhanced monitoring of hazardous waste site remediation: Electrical conductivity tomography and citizen monitoring of remediation through the EPA's community advisory group program

NASA Astrophysics Data System (ADS)

Hort, Ryan D.

In situ chemical oxidation using permanganate has become a common method for degrading trichloroethene (TCE) in contaminated aquifers. Its effectiveness, however, is dependent upon contact between the oxidant and contaminant. Monitoring permanganate movement after injection is often hampered by aquifer heterogeneity and insufficient well coverage. Time lapse electrical conductivity tomography increases the spatial extent of monitoring beyond well locations. This technique can create two- or three-dimensional images of the electrical conductivity within the aquifer to monitor aquifer chemistry changes caused by permanganate injection and oxidation reactions. In-phase and quadrature electrical conductivity were measured in homogeneous aqueous and porous media samples to determine the effects of TCE and humate oxidation by permanganate on both measures of conductivity. Further effects of clean sand, 10% kaolinite (v/v), and 10% smectite (v/v) on both types of conductivity were studied as well. Finally, in-phase electrical conductivity was measured over time after injecting permanganate solution into two-dimensional tanks containing artificial groundwater with and without TCE to observe the movement of the permanganate plume and its interaction with TCE and to examine the effectiveness of time-lapse conductivity tomography for monitoring the plume's movement. In-phase electrical conductivity after oxidation reactions involving permanganate, TCE, and humate could be accurately modeled in homogeneous batch samples. Use of forward modeling of in-phase conductivity from permanganate concentrations may be useful for improving recovery of conductivity values during survey inversion, but further work is needed combining the chemistry modeling with solute transport models. Small pH-related quadrature conductivity decreases were observed after TCE oxidation, and large quadrature conductivity increases were observed as a result of sodium ion addition; however, quadrature conductivity could not be related to concentrations of permanganate or reaction products. Additionally, EPA Superfund sites participating in the Community Advisory Group (CAG) program were examined to determine how communities may have benefitted from the program. While CAG participation was correlated with slower achievement of EPA cleanup milestones, many CAGs successfully achieved five standardized social goals. CAGs that achieved these social goals varied in composition but were similar in their focus on community outreach and ability to extend their influence beyond CAG meetings.

Emissions Inventory Final Rule TSD

EPA Pesticide Factsheets

This technical support document (TSD) provides the details of emissions data processing done in support of EPA's final rulemaking effort for the Federal Transport Rule, now known as the Cross-State Air Pollution Rule.

EPA Efforts in the Asia-Pacific Region

EPA Pesticide Factsheets

EPA’s engagement in Asia and the Pacific Islands helps safeguard our domestic environment; protect the health of our citizens; address global environmental issues; and improve the safety of products and food.

Green Power Partnership Program Initiatives

EPA Pesticide Factsheets

EPA's Green Power Partnership has a number of initiatives that focus on the collective green power efforts within specific sectors and renewable energy procurement strategies, which provide recognition opportunities for Partners and increase awareness.

Lower Merrimack River en Español

EPA Pesticide Factsheets

Information on the efforts of the US EPA, the Commonwealth of Massachusetts, the municipalities within the Lower Merrimack River and nongovernmental organizations to improve the water quality of the Lower Merrimack River.

How We Engage Our Pesticide Stakeholders

EPA Pesticide Factsheets

The success of EPA's pesticide program is directly connected to our efforts to engage all stakeholders. In addition to meetings on pesticide-specific actions, we sponsor advisory committees that include diverse, independent stakeholders.

Modernizing the Regulatory System for Biotechnology Products

EPA Pesticide Factsheets

This Web page describes the continuing effort to modernize the federal regulatory system for biotechnology products as well as clarify various roles of EPA, FDA and USDA in evaluating new biotechnology products.

Determination of Selected Perfluorinated Alkyl Acids in Drinking Water by Solid Phase Extraction and Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

EPA Science Inventory

The 1996 amendments to the Safe Drinking Water Act (SDWA) required EPA to establish a Contaminant Candidate List (CCL), that contains a list of drinking water contaminants that the Agency will consider for future regulation. EPA must make a regulatory determination on a minimum ...

Development and Multi-laboratory Verification of US EPA Method 543 for the Analysis of Drinking Water Contaminants by Online Solid Phase Extraction-LC–MS-MS

EPA Science Inventory

A drinking water method for seven pesticides and pesticide degradates is presented that addresses the occurrence monitoring needs of the US Environmental Protection Agency (EPA) for a future Unregulated Contaminant Monitoring Regulation (UCMR). The method employs online solid pha...

The Power of Organizational Readiness to Boost Success with the 2008 EPAS in Social Work Education

ERIC Educational Resources Information Center

Burney Nissen, Laura

2014-01-01

Social work education is engaged in a significant evolutionary phase of its development, spearheaded by the Council on Social Work Education and the 2008 Educational Policy and Accreditation Standards (EPAS). This article suggests that an organizational change--anchored focus is a little discussed but ultimately important set of theories and…

Anticarcinogenic efficacy of phytic acid extracted from rice bran on azoxymethane-induced colon carcinogenesis in rats.

PubMed

Norazalina, S; Norhaizan, M E; Hairuszah, I; Norashareena, M S

2010-05-01

This study is carried out to determine the potential of phytic acid extracted from rice bran in the suppression of colon carcinogenesis induced by azoxymethane (AOM) in rats. Seventy-two male Sprague-Dawley rats were divided into 6 groups with 12 rats in each group. The intended rats for cancer treatment received two intraperitoneal injections of AOM in saline (15mg/kg bodyweight) over a 2-week period. The treatments of phytic acid were given in two concentrations: 0.2% (w/v) and 0.5% (w/v) during the post-initiation phase of carcinogenesis phase via drinking water. The colons of the animals were analyzed for detection and quantification of aberrant crypt foci (ACF) after 8 weeks of treatment. The finding showed treatment with 0.2% (w/v) extract phytic acid (EPA) gave the greatest reduction in the formation of ACF. In addition, phytic acid significantly suppressed the number of ACF in the distal, middle and proximal colon as compared to AOM alone (p<0.05). For the histological classification of ACF, treatment with 0.5% (w/v) commercial phytic acid (CPA) had the highest percentage (71%) of non-dysplastic ACF followed by treatment with 0.2% (w/v) EPA (61%). Administration of phytic acid also reduced the incidence and multiplicity of total tumors even though there were no significant differences between groups. In conclusion, this study found the potential value of phytic acid extracted from rice bran in reducing colon cancer risk in rats.

Combined production of fucoxanthin and EPA from two diatom strains Phaeodactylum tricornutum and Cylindrotheca fusiformis cultures.

PubMed

Wang, Hui; Zhang, Yan; Chen, Lin; Cheng, Wentao; Liu, Tianzhong

2018-04-04

Fucoxanthin and eicosapentaenoic acid (EPA) provide significant health benefits for human population. Diatom is a potential natural livestock for the combined production of EPA and fucoxanthin. In this study, first, the effects of three important parameters including light intensity, nitrogen concentration and salinity were evaluated for the production of EPA and fucoxanthin in two diatom strains Phaeodactylum tricornutum and Cylindrotheca fusiformis. And then, two steps method based on light intensity were applied to produce EPA and fucoxanthin in large scale. Higher light intensity was first adopted for the high growth rate and lipid content of diatom, and after a period of time, light intensity was lowered to enhance the accumulation of fucoxanthin and EPA. In final, the highest EPA yields were 62.55 and 27.32 mg L -1 for P. tricornutum and C. fusiformis, and the fucoxanthin yield reached 8.32 and 6.05 mg L -1 , respectively.

EPA Efforts in Latin America and the Caribbean

EPA Pesticide Factsheets

The Latin America and Caribbean (LAC) program provides environmental tools and information to build the capacity of LAC governments and civil society organizations to reduce environmental degradation and its impacts on public health.

Meetings with Registrants of Pet Spot-on Products

EPA Pesticide Factsheets

Information about EPA efforts to mitigate adverse effects from spot-on products used on pets and the meetings the agency had with producers, or registrants of the products to discuss product-specific mitigation.

Uniform National Discharge Standards (UNDS) for Vessels of the Armed Forces

EPA Pesticide Factsheets

The Uniform National Discharge Standards homepage links to a description of the EPA's rulemaking process and provides information to the public on outreach efforts and answers some frequently asked questions.

F-Gas Partnership Programs

EPA Pesticide Factsheets

Provides basic information and resources for the Fluorinated Gas Partnership Programs, which were launched as a joint effort by EPA and industry groups to reduce the amount of fluorinated gases emitted through a variety of industrial processes.

Designing Green School Grounds

EPA Pesticide Factsheets

EPA is helping Newport News, Virginia take steps to prevent flooding and control stormwater on school grounds – part of an overall effort by government agencies and other partners to address the city’s revitalization needs.

Green Power Partnership Top 10 Federal Government

EPA Pesticide Factsheets

The U.S. EPA's Green Power Partnership is a voluntary program designed to reduce the environmental impact of electricity generation by promoting renewable energy. This page highlights federal agency efforts in procuring green power.

School Integrated Pest Management (IPM) Grants

EPA Pesticide Factsheets

EPA's IPM in schools grant program supports projects that include research, development, monitoring, public education, training, demonstrations, or studies to support recipients’ efforts to increase IPM adoption by public and tribal schools (K-12).

Planning Targets for Phase II Watershed Implementation Plans

EPA Pesticide Factsheets

On August 1, 2011, EPA provided planning targets for nitrogen, phosphorus and sediment for the Phase II Watershed Implementation Plans (WIPs) of the Chesapeake Bay TMDL. This page provides the letters containing those planning targets.

Sears Point Tidal Marsh Restoration Project: Phase II

EPA Pesticide Factsheets

Information about the SFBWQP Sears Point Tidal Marsh Restoration Project: Phase II, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

Gas-Phase Infrared; JCAMP Format

National Institute of Standards and Technology Data Gateway

SRD 35 NIST/EPA Gas-Phase Infrared; JCAMP Format (PC database for purchase)   This data collection contains 5,228 infrared spectra in the JCAMP-DX (Joint Committee for Atomic and Molecular Physical Data "Data Exchange") format.

Sears Point Tidal Marsh Restoration Project: Phase I

EPA Pesticide Factsheets

Information about the SFBWQP Sears Point Tidal Marsh Restoration Project: Phase I project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

A pilot outreach program for small quantity generators of hazardous waste.

PubMed Central

Brown, M S; Kelley, B G; Gutensohn, J

1988-01-01

The Massachusetts Department of Environmental Management initiated a pilot project to improve compliance with hazardous waste regulations and management of hazardous wastes with auto body shops around the state. The program consisted of mass mailings, a series of workshops throughout the state, a coordinated inspection program by the state regulatory agency, and technology transfer. At the start of the program in January 1986, approximately 650 of the estimated 2,350 auto body shops in the state had notified EPA of their waste generating activities; by January 1987, approximately 1,200 shops had done so. Suggestions for improving program efforts include tailoring the outreach effort to the industry, government-sponsored research and development directed at the needs of small firms, mandatory participation in hazardous waste transportation programs, and better coordination by EPA of its information collection and distribution program. PMID:3421393

Updating Dosimetry for Emergency Response Dose Projections.

PubMed

DeCair, Sara

2016-02-01

In 2013, the U.S. Environmental Protection Agency (EPA) proposed an update to the 1992 Protective Action Guides (PAG) Manual. The PAG Manual provides guidance to state and local officials planning for radiological emergencies. EPA requested public comment on the proposed revisions, while making them available for interim use by officials faced with an emergency situation. Developed with interagency partners, EPA's proposal incorporates newer dosimetric methods, identifies tools and guidelines developed since the current document was issued, and extends the scope of the PAGs to all significant radiological incidents, including radiological dispersal devices or improvised nuclear devices. In order to best serve the emergency management community, scientific policy direction had to be set on how to use International Commission on Radiological Protection Publication 60 age groups in dose assessment when implementing emergency guidelines. Certain guidelines that lend themselves to different PAGs for different subpopulations are the PAGs for potassium iodide (KI), food, and water. These guidelines provide age-specific recommendations because of the radiosensitivity of the thyroid and young children with respect to ingestion and inhalation doses in particular. Taking protective actions like using KI, avoiding certain foods or using alternative sources of drinking water can be relatively simple to implement by the parents of young children. Clear public messages can convey which age groups should take which action, unlike how an evacuation or relocation order should apply to entire households or neighborhoods. New in the PAG Manual is planning guidance for the late phase of an incident, after the situation is stabilized and efforts turn toward recovery. Because the late phase can take years to complete, decision makers are faced with managing public exposures in areas not fully remediated. The proposal includes quick-reference operational guidelines to inform re-entry to the contaminated zone. Broad guidance on approaches to wide-area cleanup and cleanup goals is also provided. EPA adapted the cleanup process from the 2008 U.S. Department of Homeland Security (DHS) Planning Guidance for Protection and Recovery Following Radiological Dispersal Device (RDD) and Improvised Nuclear Device (IND) Incidents, and the final PAG Manual will supersede that DHS guidance. Waste management guidance is also provided. Recognizing that an incident could result in radioactive waste volumes that severely strain or exceed available resources and capacity, officials may consider alternatives for disposal of waste that is relatively lightly contaminated. Waste management, including treatment, staging, and interim and long-term storage, must be an integral part of recovery.

Eicosapentaenoic Acid (EPA) Decreases the All-Cause Mortality in Hemodialysis Patients.

PubMed

Inoue, Tomoko; Okano, Kazuhiro; Tsuruta, Yuki; Tsuruta, Yukio; Tsuchiya, Ken; Akiba, Takashi; Nitta, Kosaku

2015-01-01

Atherosclerosis, which causes cardiovascular disease, is a major cause of death in hemodialysis (HD) patients. Eicosapentaenoic acid (EPA), an anti-hyperlipidemic agent, is known to have antioxidative or anti-inflammatory effects, resulting in improvements in atherosclerosis. In the present study, we examined whether EPA improves the all-cause mortality in patients receiving regular HD therapy. We enrolled 176 patients treated with maintenance HD therapy and performed a longitudinal observational cohort study for three years. We divided the patients into two groups based on whether or not the received EPA treatment [EPA(+) and EPA(-), respectively]. The primary end-point was all-cause death. We also matched the two groups using propensity score matching and examined the effect of EPA. Before matching, the all-cause mortality rates were 24.0% in the EPA(+) and 11.8% in the EPA(-) groups, which were significantly different (p=0.044). After propensity score matching, the EPA(+) group still showed a significantly better prognosis than the EPA(-) group (p=0.038). A multivariate analysis showed that EPA treatment significantly reduced the risk of all-cause mortality both before and after propensity score matching. EPA treatment is independently associated with lower mortality in HD patients.

A two-phase sampling design for increasing detections of rare species in occupancy surveys

USGS Publications Warehouse

Pacifici, Krishna; Dorazio, Robert M.; Dorazio, Michael J.

2012-01-01

1. Occupancy estimation is a commonly used tool in ecological studies owing to the ease at which data can be collected and the large spatial extent that can be covered. One major obstacle to using an occupancy-based approach is the complications associated with designing and implementing an efficient survey. These logistical challenges become magnified when working with rare species when effort can be wasted in areas with none or very few individuals. 2. Here, we develop a two-phase sampling approach that mitigates these problems by using a design that places more effort in areas with higher predicted probability of occurrence. We compare our new sampling design to traditional single-season occupancy estimation under a range of conditions and population characteristics. We develop an intuitive measure of predictive error to compare the two approaches and use simulations to assess the relative accuracy of each approach. 3. Our two-phase approach exhibited lower predictive error rates compared to the traditional single-season approach in highly spatially correlated environments. The difference was greatest when detection probability was high (0·75) regardless of the habitat or sample size. When the true occupancy rate was below 0·4 (0·05-0·4), we found that allocating 25% of the sample to the first phase resulted in the lowest error rates. 4. In the majority of scenarios, the two-phase approach showed lower error rates compared to the traditional single-season approach suggesting our new approach is fairly robust to a broad range of conditions and design factors and merits use under a wide variety of settings. 5. Synthesis and applications. Conservation and management of rare species are a challenging task facing natural resource managers. It is critical for studies involving rare species to efficiently allocate effort and resources as they are usually of a finite nature. We believe our approach provides a framework for optimal allocation of effort while maximizing the information content of the data in an attempt to provide the highest conservation value per unit of effort.

NASA's PEM Fuel Cell Power Plant Development Program for Space Applications

NASA Technical Reports Server (NTRS)

Hoberecht, Mark

2006-01-01

NASA embarked on a PEM fuel cell power plant development program beginning in 2001. This five-year program was conducted by a three-center NASA team of Glenn Research Center (lead), Johnson Space Center, and Kennedy Space Center. The program initially was aimed at developing hardware for a Reusable Launch Vehicle (RLV) application, but more recently had shifted to applications supporting the NASA Exploration Program. The first phase of the development effort, to develop breadboard hardware in the 1-5 kW power range, was conducted by two competing vendors. The second phase of the effort, to develop Engineering Model hardware at the 10 kW power level, was conducted by the winning vendor from the first phase of the effort. Both breadboard units and the single engineering model power plant were delivered to NASA for independent testing. This poster presentation will present a summary of both phases of the development effort, along with a discussion of test results of the PEM fuel cell engineering model under simulated mission conditions.

Asbestos concentrations two years after abatement in seventeen schools. Final summary report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kominsky, J.R.; Freyberg, R.W.; Brownlee, J.A.

Airborne asbestos concentrations were measured at 17 schools that underwent an asbestos abatement 2 years before in 1988. These 17 schools, which involved 20 abatement sites, were part of a study conducted by the U.S. Environmental Protection Agency (EPA) and the New Jersey Department of Health (NJDOH) in 1988. The 1988 study showed that asbestos concentrations measured independently by the NJDOH and EPA during the clearance phase of the abatement were elevated in the abatement and perimeter areas compared with outdoor concentrations. The present study was conducted to determine the current levels of airborne asbestos under simulated occupancy conditions andmore » to determine whether the elevated levels found during the clearance phase were still present 2 years after abatement. In 1990, four sites showed significantly higher mean asbestos concentrations inside the building (i.e., the previously abated area and/or perimeter area) compared with those outdoors (p<0.05). In 1990, the mean asbestos concentration measured in the perimeter area at one site and in the previously abated area at two sites were significantly higher than those in 1988 (p<0.05). Variations in asbestos levels between 1988 and 1990 may be due to sampling techniques (passive and aggressive versus modified aggressive), residual air-entrainable asbestos from the 1988 abatement, or air-entrainable asbestos from operations and maintenance activities since 1988.« less

COUPLED FREE AND DISSOLVED PHASE TRANSPORT: NEW SIMULATION CAPABILITIES AND PARAMETER INVERSION

EPA Science Inventory

The vadose zone free-phase simulation capabilities of the US EPA Hydrocarbon Spill Screening Model (HSSM) (Weaver et al., 1994) have been linked with the 3-D multi-species dissolved-phase contaminant transport simulator MT3DMS (Zheng and Wang, 1999; Zheng, 2005). The linkage pro...

South Bay Salt Pond Restoration, Phase II at Ravenswood

EPA Pesticide Factsheets

Information about the South Bay Salt Pond Restoration Project: Phase II Construction at Ravenswood, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

Estuary 2100 Project, Phase 2: Building Partnerships for Resilient Watersheds

EPA Pesticide Factsheets

Information about the SFBWQP Estuary 2100 Project, Phase 2: Building Partnerships for Resilient Watersheds, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquat

Turning free speech into corporate speech: Philip Morris' efforts to influence U.S. and European journalists regarding the U.S. EPA report on secondhand smoke.

PubMed

Muggli, Monique E; Hurt, Richard D; Becker, Lee B

2004-09-01

Previously secret internal tobacco company documents show that the tobacco industry launched an extensive multifaceted effort to influence the scientific debate about the harmful effects of secondhand smoke. Integral to the industry's campaign was an effort to derail the Environmental Protection Agency's (EPA) risk assessment on environmental tobacco smoke (ETS) by recruiting a network of journalists to generate news articles supporting the industry's position and pushing its public relations messages regarding the ETS issue. Searches of previously secret internal tobacco industry records were conducted online and at the Minnesota Tobacco Document Depository. In addition, searches on the World Wide Web were conducted for each National Journalism Center alumnus. Lexis-Nexis was used to locate news stories written by the journalists cited in this paper. Philip Morris turned to its public relations firm Burson Marsteller to "build considerable reasonable doubt em leader particularly among consumers" about the "scientific weaknesses" of the EPA report. A Washington, DC, media and political consultant Richard Hines was a key player in carrying out Burson Marsteller's media recommendations of "EPA bashing" for Philip Morris. In March 1993, Philip Morris' vice president of corporate affairs policy and administration reported to Steve Parrish, vice president and general counsel of Philip Morris, that their consultant was "responsible for a number of articles that have appeared in em leader major news publications regarding EPA and ETS." In addition to placing favorable stories in the press through its consultant, Philip Morris sought to expand its journalist network by financially supporting a U.S. school of journalism; the National Journalism Center (NJC). Philip Morris gleaned "about 15 years worth of journalists at print and visual media throughout the country em leader to get across [its] side of the story" resulting in "numerous pieces consistent with our point of view." The company planned to "design innovative strategies to communicate [its] position on ETS through education programs targeting policy makers and the media" via the NJC. Finally, journalists associated with think tanks that were financially supported by Philip Morris wrote numerous articles critical of the EPA. This is the first report, from the tobacco industry's own documents, to show the extent to which the tobacco industry has gone to influence the print media on the issue of the health effects of secondhand smoke. Unfortunately, what we report here is that even journalists can fall victim to well-orchestrated and presented public relations efforts regardless of their scientific validity. It is not clear how various professional media organizations oversee the ethical conduct of their members. Certainly, on the topic of the health effects of secondhand smoke, more scrutiny is warranted from these organizations for articles written by their members lest the public be misinformed and thus ill served.

Multilayer Pressure Vessel Materials Testing and Analysis Phase 2

NASA Technical Reports Server (NTRS)

Popelar, Carl F.; Cardinal, Joseph W.

2014-01-01

To provide NASA with a suite of materials strength, fracture toughness and crack growth rate test results for use in remaining life calculations for the vessels described above, Southwest Research Institute® (SwRI®) was contracted in two phases to obtain relevant material property data from a representative vessel. An initial characterization of the strength, fracture and fatigue crack growth properties was performed in Phase 1. Based on the results and recommendations of Phase 1, a more extensive material property characterization effort was developed in this Phase 2 effort. This Phase 2 characterization included additional strength, fracture and fatigue crack growth of the multilayer vessel and head materials. In addition, some more limited characterization of the welds and heat affected zones (HAZs) were performed. This report

Gulf of Mexico Air Quality: CALIPSO Support for Gulf of Mexico Air Quality Relating to the Deepwater Horizon Oil Spill

NASA Technical Reports Server (NTRS)

Nguyen, Myngoc T.; Lapointe, Stephen; Jennings, Brittney; Zoumplis, Angela

2011-01-01

On April 20, 2010, an oil platform belonging to BP exploded and leaked a huge volume of oil into the Gulf of Mexico. In an effort to control the spread of the oil, BP applied dispersants such as Corexit and conducted in-situ burnings of the oil. This catastrophe created a complex chain of events that affected not only the fragile water and land ecosystems, but the humans who breathe the air every day. Thousands of people were exposed to fumes associated with oil vapors from the spill, burning of the oil, and the toxic mixture of dispersants. While aiding in clean-up efforts, local fishermen were directly exposure to fumes when working on the Gulf. A notable amount of Gulf Coast residents were also exposed to the oil fumes as seasonal southeasterly winds blew vapors toward land. The Volatile Organic Compounds (VOC) found in oil vapors include: benzene, toluene, ethyl benzene, xylene, naphthalene, hydrogen sulfide and particulate matter (PM). Increases in water temperature and sunlight due to the summer season allow for these VOCs and PM to evaporate into the air more rapidly. Aside from the VOCs found in oil vapors, the dispersant being used to break up the oil is highly toxic and is thought to be even more toxic than the oil itself (EPA website, 2010). To protect human health, the environment, and to make informed policy decisions relevant to the spill, the EPA Region 6 has continuously monitored the affected areas carefully for levels of pollutants in the outdoor air that are associated with petroleum products and the burning of oil along the coast. In an effort to prevent, prepare for, and respond to future oil spills that occur in and around inland waters of the United States, the EPA has been working with local, state, and federal response partners. Air quality measurements were collected by the EPA at five active monitoring systems stationed along the coast.

40 CFR 85.2220 - Preconditioned two speed idle test-EPA 91.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Preconditioned two speed idle test-EPA... Warranty Short Tests § 85.2220 Preconditioned two speed idle test—EPA 91. (a) General requirements—(1...-speed mode followed immediately by a first-chance idle mode. (ii) The second-chance test as described...

40 CFR 85.2220 - Preconditioned two speed idle test-EPA 91.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 18 2011-07-01 2011-07-01 false Preconditioned two speed idle test-EPA... Warranty Short Tests § 85.2220 Preconditioned two speed idle test—EPA 91. (a) General requirements—(1...-speed mode followed immediately by a first-chance idle mode. (ii) The second-chance test as described...

The Vocational Education Component of the Rhode Island Educational Management Information System.

ERIC Educational Resources Information Center

Galamaga, Donald P.; Bartolomeo, Paul A.

The document describes the implementation (Phase Two) of the Vocational Educational module--one component of an educational management information system. Phase Two entails the technical effort of final system design, final output specifications, edit specifications, system software selection, computer programing, systems documentation and the…

Order Responding to Wyoming Outdoor Council's Request that the Administrator Object to Two PacificCorp Permits

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Action on Hazardous Wastes.

ERIC Educational Resources Information Center

EPA Journal, 1979

1979-01-01

U.S. EPA is gearing up to investigate about 300 hazardous waste dump sites per year that could pose an imminent health hazard. Prosecutions are expected to result from the priority effort at investigating illegal hazardous waste disposal. (RE)

Report: Congressional Request on EPA Enforcement Resources and Accomplishments

EPA Pesticide Factsheets

Report #2004-S-00001, October 10, 2003. Following September 11, 2001, EPA’s Office of Enforcement and Compliance Assurance (OECA) assumed additional duties in conjunction with nation-wide efforts to improve homeland security.

2015 NIEHS/EPA Children’s Centers Grantees Meeting Agenda

EPA Pesticide Factsheets

The Meeting will enable Children’s Centers program researchers to present novel findings, discuss lessons learned, identify challenges, review methodologies as well as to identify collaborative opportunities for future research efforts between the Centers.

EPA/USDA Water Quality Trading Partnership Agreement

EPA Pesticide Factsheets

The document details an agreement between the U. S. Department of Agriculture, Natural Resources Conservation Service (NRCS) and the U. S. Environmental Protection Agency on collaboration efforts to establish viable water quality credit trading markets.

Framework for Ecological Risk Assessment

EPA Pesticide Factsheets

This is the first step in a long-term effort to develop risk assessment guidelines for ecological effects. Its primary purpose is to offer a simple, flexible structure for conducting and evaluating ecological risk assessment within EPA.

Report: Progress Report on Drinking Water Protection Efforts

EPA Pesticide Factsheets

Report #2005-P-00021, August 22, 2005. EPA and the States in this sample are making progress at helping water systems better reach Congress’ goal of protecting drinking water from its source to the consumer.

Enforcement Alert: EPA Enforcement Efforts Focus on Prevention of Chemical Accidents

EPA Pesticide Factsheets

This Alert is intended to inform the industry that companies must take responsibility to prevent accidental releases of dangerous chemicals like anhydrous ammonia through compliance with CAA’s Chemical Accident Prevention Program.

PFCA Article Testing

EPA Science Inventory

The U.S. Environmental Protection Agency (EPA) has established an ongoing effort to quantify possible changes in levels of perfluorinated chemicals (PFCs) in articles of commerce (AOCs). Temporal trends in the concentrations of selected PFCs, including perfluorooctanoic acid (PFO...

National Priorities: PER- AND POLYFLUOROALKYL SUBSTANCES

EPA Pesticide Factsheets

EPA seeks applications for research on identifying communities at high risk of adverse health effects of lead in drinking water, identifying opportunities to mitigate these risks, conduct efforts to inform interested parties of these risks & opportunities.

Space Station Furnace Facility. Volume 2: Requirements definition and conceptual design study

NASA Technical Reports Server (NTRS)

1992-01-01

The Space Station Freedom Furnace (SSFF) Project is divided into two phases: phase 1, a definition study phase, and phase 2, a design and development phase. TBE was awarded a research study entitled, 'Space Station Furnace Facility Requirements Definition and Conceptual Design Study' on June 2, 1989. This report addresses the definition study phase only. Phase 2 is to be complete after completion of phase 1. The contract encompassed a requirements definition study and culminated in hardware/facility conceptual designs and hardware demonstration development models to test these conceptual designs. The study was divided into two parts. Part 1 (the basic part of the effort) encompassed preliminary requirements definition and assessment; conceptional design of the SSFF Core; fabrication of mockups; and preparation for the support of a conceptional design review (CoDR). Part 2 (the optional part of the effort) included detailed definition of the engineering and design requirements, as derived from the science requirements; refinement of the conceptual design of the SSFF Core; fabrication and testing of the 'breadboards' or development models; and preparation for and support of a requirements definition review.

“Summary of the Emission Inventories compiled for the ...

EPA Pesticide Factsheets

We present a summary of the emission inventories from the US, Canada, and Mexico developed for the second phase of the Air Quality Model Evaluation International Initiative (AQMEII). Activities in this second phase are focused on the application and evaluation of coupled meteorology-chemistry models over both North America and Europe using common emissions and boundary conditions for all modeling groups for the years of 2006 and 2010. We will compare the emission inventories developed for these two years focusing on the SO2 and NOx reductions over these years and compare with socio-economic data. In addition we will highlight the differences in the inventories for the US and Canada compared with the inventories used in the phase 1 of this project. The National Exposure Research Laboratory (NERL) Atmospheric Modeling and Analysis Division (AMAD) conducts research in support of EPA mission to protect human health and the environment. AMAD research program is engaged in developing and evaluating predictive atmospheric models on all spatial and temporal scales for forecasting the air quality and for assessing changes in air quality and air pollutant exposures, as affected by changes in ecosystem management and regulatory decisions. AMAD is responsible for providing a sound scientific and technical basis for regulatory policies based on air quality models to improve ambient air quality. The models developed by AMAD are being used by EPA, NOAA, and the air pollut

A Citizen Science and Government Collaboration: Developing ...

EPA Pesticide Factsheets

The U.S. Environmental Protection Agency (EPA) is actively involved in supporting citizen science projects and providing communities with information and assistance for conducting their own air pollution monitoring. As part of a Regional Applied Research Effort (RARE) project, EPA's Office of Research and Development (ORD) worked collaboratively with EPA Region 2 and the Ironbound Community Corporation (ICC) in Newark, New Jersey, to develop and test the “Air Sensor Toolbox for Citizen Scientists.” In this collaboration, citizen scientists measured local gaseous and particulate air pollution levels by using a customized low-cost sensor pod designed and fabricated by EPA. This citizen science air quality measurement project provided an excellent opportunity for EPA to evaluate and improve the Toolbox resources available to communities. The Air Sensor Toolbox, developed in coordination with the ICC, can serve as a template for communities across the country to use in developing their own air pollution monitoring programs in areas where air pollution is a concern. This pilot project provided an opportunity for a highly motivated citizen science organization and the EPA to work together directly to address environmental concerns within the community. Useful lessons were learned about how to improve coordination between the government and communities and the types of tools and technologies needed for conducting an effective citizen science project that can be app

Sustainable Materials Management (SMM) WasteWise Data

EPA Pesticide Factsheets

EPA??s WasteWise encourages organizations and businesses to achieve sustainability in their practices and reduce select industrial wastes. WasteWise is part of EPA??s sustainable materials management efforts, which promote the use and reuse of materials more productively over their entire lifecycles. All U.S. businesses, governments and nonprofit organizations can join WasteWise as a partner, endorser or both. Current participants range from small local governments and nonprofit organizations to large multinational corporations. Partners demonstrate how they reduce waste, practice environmental stewardship and incorporate sustainable materials management into their waste-handling processes. Endorsers promote enrollment in WasteWise as part of a comprehensive approach to help their stakeholders realize the economic benefits to reducing waste. WasteWise helps organizations reduce their impact on global climate change through waste reduction. Every stage of a product's life cycle??extraction, manufacturing, distribution, use and disposal??indirectly or directly contributes to the concentration of greenhouse gases (GHGs) in the atmosphere and affects the global climate. WasteWise is part of EPA's larger SMM program (https://www.epa.gov/smm). Sustainable Materials Management (SMM) is a systemic approach to using and reusing materials more productively over their entire lifecycles. It represents a change in how our society thinks about the use of natural resources

Oral fish oil positively influences nutritional-inflammatory risk in patients with haematological malignancies during chemotherapy with an impact on long-term survival: a randomised clinical trial.

PubMed

Chagas, T R; Borges, D S; de Oliveira, P F; Mocellin, M C; Barbosa, A M; Camargo, C Q; Del Moral, J Â G; Poli, A; Calder, P C; Trindade, E B S M; Nunes, E A

2017-12-01

Studies suggest that the ingestion of fish oil (FO), a source of the omega-3 polyunsaturated fatty acids docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), can reduce the deleterious side-effects of chemotherapy. The aim of this randomised clinical trial was to evaluate the effect of supplementation with oral FO for 9 weeks on nutritional parameters and inflammatory nutritional risk in patients with haematological malignancies during the beginning of chemotherapy. Twenty-two patients with leukaemia or lymphoma were randomised to the unsupplemented group (UG) (n = 13) or supplemented group (SG) (n = 9). SG received 2 g/day of fish oil for 9 weeks. Nutritional status, serum acute-phase proteins and plasma fatty acids were evaluated before (T0) and after (T1) the intervention period. Data were analysed using two models; model 1, comprising data from all patients included in the study, and model 2, comprising data from UG patients with no increase in the proportions of EPA and DHA in plasma and data from SG patients showing an at least 100% increase in plasma EPA and DHA. SG showed an increased plasma proportion of EPA and DHA in both models. In model 2, C-reactive protein (CRP) and CRP/albumin ratio showed larger reductions in the SG. Overall long-term survival in both models (465 days after the start of the chemotherapy) was higher in the group ingesting fish oil (P < 0.05). These findings indicate an improved nutritional-inflammatory risk and potential effects on long-term survival in patients with haematological malignancies supplemented with FO during the beginning of chemotherapy. © 2017 The British Dietetic Association Ltd.

Incorporating High-Throughput Exposure Predictions with ...

EPA Pesticide Factsheets

We previously integrated dosimetry and exposure with high-throughput screening (HTS) to enhance the utility of ToxCast™ HTS data by translating in vitro bioactivity concentrations to oral equivalent doses (OEDs) required to achieve these levels internally. These OEDs were compared against regulatory exposure estimates, providing an activity-to-exposure ratio (AER) useful for a risk-based ranking strategy. As ToxCast™ efforts expand (i.e., Phase II) beyond food-use pesticides towards a wider chemical domain that lacks exposure and toxicity information, prediction tools become increasingly important. In this study, in vitro hepatic clearance and plasma protein binding were measured to estimate OEDs for a subset of Phase II chemicals. OEDs were compared against high-throughput (HT) exposure predictions generated using probabilistic modeling and Bayesian approaches generated by the U.S. EPA ExpoCast™ program. This approach incorporated chemical-specific use and national production volume data with biomonitoring data to inform the exposure predictions. This HT exposure modeling approach provided predictions for all Phase II chemicals assessed in this study whereas estimates from regulatory sources were available for only 7% of chemicals. Of the 163 chemicals assessed in this study, three or 13 chemicals possessed AERs <1 or <100, respectively. Diverse bioactivities y across a range of assays and concentrations was also noted across the wider chemical space su

Economic Impacts of the Category 3 Marine Rule on Great ...

EPA Pesticide Factsheets

This is a scenario-based economic assessment of the impacts of EPA’s Category 3 Marine Diesel Engines Rule on certain cargo movements in the Great Lakes shipping network. During the proposed phase of the rulemaking, Congress recommended that EPA conduct such a study, and EPA will docket the final peer-reviewed product at EPA-HQ-OAR-2007-0121. The objective is to assess how the requirement to switch to cleaner, more expensive fuel will affect certain shippers and operators on the Great Lakes, including the likelihood of cargo movements shifting away from marine transport.

Order Responding to January 2, 2001 Petition for EPA to Object to Borden's Permit Modification

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Response to Petition for EPA to Object to Cash Creek Generation Station's Title V Permit

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Managing Debris after a Natural Disaster: Evaluation of the ...

EPA Pesticide Factsheets

Report and Appendices In an effort to provide a scientific basis to expand available options to better manage natural disaster debris in the future, EPA evaluated the combustion of both vegetative debris and construction and demolition (C&D) debris in an air curtain burner (ACB). ACBs can be mobilized to where they’re needed as a potential means of reducing the waste volume while minimizing potentially harmful environmental impacts. These tests were conducted in June 2008 by EPA/ORD at the Old Paris Road Landfill in St. Bernard Parish, Louisiana

South Bay Salt Pond Tidal Wetland Restoration Phase II Planning

EPA Pesticide Factsheets

Information about the SFBWQP South Bay Salt Pond Tidal Wetland Restoration Phase II Planning project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic re

40 CFR 85.2214 - Two speed idle test-EPA 81.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 18 2011-07-01 2011-07-01 false Two speed idle test-EPA 81. 85.2214... Tests § 85.2214 Two speed idle test—EPA 81. (a)(1) General calendar year applicability. The test... exhaust pipes originate from a common point. (4) The engine speed is increased to 2500 ±300 rpm, with...

40 CFR 85.2214 - Two speed idle test-EPA 81.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Two speed idle test-EPA 81. 85.2214... Tests § 85.2214 Two speed idle test—EPA 81. (a)(1) General calendar year applicability. The test... exhaust pipes originate from a common point. (4) The engine speed is increased to 2500 ±300 rpm, with...

40 CFR 85.2215 - Two speed idle test-EPA 91.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Two speed idle test-EPA 91. 85.2215... Tests § 85.2215 Two speed idle test—EPA 91. (a) General requirements—(1) Exhaust gas sampling algorithm...) of this section, consists of an idle mode followed by a high-speed mode. (ii) The second-chance high...

40 CFR 85.2215 - Two speed idle test-EPA 91.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 18 2011-07-01 2011-07-01 false Two speed idle test-EPA 91. 85.2215... Tests § 85.2215 Two speed idle test—EPA 91. (a) General requirements—(1) Exhaust gas sampling algorithm...) of this section, consists of an idle mode followed by a high-speed mode. (ii) The second-chance high...

Why the toxic substances control act needs an overhaul, and how to strengthen oversight of chemicals in the interim.

PubMed

Vogel, Sarah A; Roberts, Jody A

2011-05-01

The Toxic Substances Control Act gives the Environmental Protection Agency (EPA) the authority to regulate industrial chemicals not covered by other statutes. Today there are more than 83,000 such chemicals. However, the law is widely perceived as weak and outdated, and various stakeholders have called for its reform, citing the EPA's inability to regulate the use of asbestos, among other substances. We analyze the flaws in the act and suggest ways in which the EPA might better position itself to manage chemical risks and protect the public's health. In addition to the new tools and technologies it is adopting, the agency needs new allies-both inside and outside the government-in its efforts to identify and control hazardous chemicals.

US EPA - A*Star Partnership - Accelerating the Acceptance of ...

EPA Pesticide Factsheets

The path for incorporating new alternative methods and technologies into quantitative chemical risk assessment poses a diverse set of scientific challenges. Some of these challenges include development of relevant and predictive test systems and computational models to integrate and extrapolate experimental data, and rapid characterization and acceptance of these systems and models. The series of presentations will highlight a collaborative effort between the U.S. Environmental Protection Agency (EPA) and the Agency for Science, Technology and Research (A*STAR) that is focused on developing and applying experimental and computational models for predicting chemical-induced liver and kidney toxicity, brain angiogenesis, and blood-brain-barrier formation. In addressing some of these challenges, the U.S. EPA and A*STAR collaboration will provide a glimpse of what chemical risk assessments could look like in the 21st century. Presentation on US EPA – A*STAR Partnership at international symposium on Accelerating the acceptance of next-generation sciences and their application to regulatory risk assessment in Singapore.

Removing inorganics: Common methods have limits

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sorg, T.J.

1991-06-01

When EPA sets a regulation (a maximum contaminant level) for a contaminant, it must also specify the best available technology (BAT) that can be used to remove the contaminant. Because the regulations apply to community water systems, the technologies selected are ones that are commonly used to treat community size water systems. Thus, EPA R and D program has focused its efforts on evaluating primarily community applied technologies such as conventional coagulation-filtration, lime softening, ion exchange, adsorption, and membrane process. When BAT is identified for a specific contaminant, frequently the BAT will be listed with its limitations because the processmore » is often not effective under all water quality conditions. The same limitations would also apply to POU/POE treatment. The paper discusses EPA's regulations on inorganic contaminants, the best available technologies cited by EPA, and the limitations of the processes. Using arsenic as an example, the impact of the contaminant chemistry and water quality on removals is presented.« less

Indian oil company joins efforts to reduce methane emissions

NASA Astrophysics Data System (ADS)

Kumar, Mohi

The Oil and Natural Gas Corp, Ltd. (ONGC), headquartered in Dehradun, India, has joined seven U.S. and Canadian oil and natural gas companies as a partner in a U.S. Environmental Protection Agency program to reduce greenhouse gas emissions. EPA's Natural Gas STAR International Program aims to reduce methane emissions from the oil and natural gas sector while delivering more gas to markets around the world. With this partnership, ONGC agrees to implement emissions reduction practices and to submit annual reports on progress achieved; EPA agrees to assist ONGC with training technicians in new cost-effective technologies that will help achieve target emissions. The Natural Gas STAR International Program is administered under the Methane to Markets Partnership, a group of 20 countries and 600 companies across the globe that since 2004 has volunteered to cut methane emissions. More information on EPA's agreement with ONGC can be found at http://www.epa.gov/gasstar/index.htm; information about the Methane to Markets Partnership can be found at http://www.methanetomarkets.org.

Triploidy does not decrease contents of eicosapentaenoic and docosahexaenoic acids in filets of pink salmon Oncorhynchus gorbuscha.

PubMed

Gladyshev, Michail I; Artamonova, Valentina S; Makhrov, Alexander A; Sushchik, Nadezhda N; Kalachova, Galina S; Dgebuadze, Yury Y

2017-02-01

Triploid fish has become an important item of commercial aquaculture, but data on its fatty acid (FA) composition are still controversial, especially regarding essential polyunsaturated fatty acids, eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA). We studied FA composition and content of diploid and triploid pink salmon Oncorhynchus gorbuscha, reared in aquaculture in a bay of the White Sea (Russia). FA composition, measured as percentages of total FA of triploids and immature diploid females significantly differed from that of mature diploid fish. Specifically, mature diploids had higher percentage of EPA and DHA in their muscle tissue (filets) compared to that of triploids and immature diploid females. Nevertheless, the contents of EPA and DHA per mass of the filets in diploid and triploid specimens were similar. Thus, no special efforts are needed to improve EPA and DHA contents in filets of triploids. Copyright © 2016 Elsevier Ltd. All rights reserved.

EPA Office of Research and Development Green Infrastructure Research

EPA Science Inventory

This presentation provides an overview introduction to the USEPA Office of Research and Development (ORD)'s ongoing green infrastructure (GI) research efforts for stormwater management. GI approaches that increase infiltration, evapotranspiration, and rainwater harvesting offer ...

Climate Adaptation and Sea Level Rise

EPA Pesticide Factsheets

EPA supports the development and maintenance of water utility infrastructure across the country. Included in this effort is helping the nation’s water utilities anticipate, plan for, and adapt to risks from flooding, sea level rise, and storm surge.

Community Update on Site Activities, July 19, 2013

EPA Pesticide Factsheets

In an effort to engage and inform community members interested in the New Bedford Harbor Superfund Site cleanup, EPA will be issuing periodic topic-based fact sheets that will provide background information and updates about ongoing activities.

ENVIRONMENTAL BIOINFORMATICS AND COMPUTATIONAL TOXICOLOGY CENTER

EPA Science Inventory

The Center activities focused on integrating developmental efforts from the various research projects of the Center, and collaborative applications involving scientists from other institutions and EPA, to enhance research in critical areas. A representative sample of specif...

Soak Up the Rain Ready-to-Use Outreach Tools

EPA Pesticide Factsheets

EPA has produced a Soak Up the Rain business card, posters, & a banner that can be downloaded & copied for use by citizens, municipalities, watershed & planning organizations & others in their stormwater/green infrastructure education & outreach efforts.

Emergency Response Notification System (ERNS)

EPA Science Inventory

The Emergency Response Notification System (ERNS) is a database used to store information on notifications of oil discharges and hazardous substances releases. The ERNS program is a cooperative data sharing effort among the Environmental Protection Agency (EPA) Headquarters, the ...

Roles and Responsibilities for Web Council Members

EPA Pesticide Factsheets

Members represent their Region or AAship on the Web Council, act as a primary point of contact, coordinate Regional/AAship web development within broader Agency efforts including One EPA Web standards and best practices, and have other responsibilites.

GENOTOXICITY RISK ASSESSMENT: A PROPOSED CLASSIFICATION STRATEGY

EPA Science Inventory

Recent advances in genetic toxicity (mutagenicity) testing methods and in approaches to performing risk assessment are prompting a renewed effort to harmonize genotoxicity risk assessment across the world. The US Environmental Protection Agency (EPA) first published Guidelines fo...

ECOREGIONS OF COLORADO

EPA Science Inventory

The ecoregions of Colorado have been identified, mapped, and described and provide a geographic structure for environmental resources research, assessment, monitoring, and management. This project is part of a larger effort by the U.S. EPA to create a national, hierarchical ecor...

Surface Infiltration Rates of Permeable Surfaces: Six Month ...

EPA Pesticide Factsheets

At the end of October 2009, EPA opened a parking lot on the Edison Environmental Center that included three parking rows of permeable pavement. The construction was a cooperative effort among EPA’s Office of Administration and Resources Management, National Risk Management Research Laboratory, and the facility owner, Region 2. The lot serves as an active parking area for facility staff and visitors and also as a research platform. Key unknowns in the application of green infrastructure include the long term performance and the maintenance requirements. The perceived uncertainty in these is a barrier to widespread adoption of the installation of permeable surfaces for stormwater management. EPA recognizes the need for credible long-term performance maintenance data and has begun a long-term monitoring effort on this installation. This document outlines the methods and results of the surface infiltration monitoring of the permeable parking surfaces during the first six months of operation. To inform the public.

DOE Office of Scientific and Technical Information (OSTI.GOV)

LaFreniere, L. M.

The Commodity Credit Corporation of the U.S. Department of Agriculture (CCC/USDA) operated a grain storage facility in Waverly, Nebraska, from 1952 to 1974. During this time, the grain fumigant '80/20' (carbon tetrachloride/carbon disulfide) was used to preserve stored grain. In 1982, sampling by the U.S. Environmental Protection Agency (EPA) found carbon tetrachloride contamination in the town's groundwater. After an investigation of the contaminant distribution, the site was placed on the National Priority List (NPL) in 1986, and the CCC/USDA accepted responsibility for the contamination. An Interagency Compliance Agreement between the EPA and the CCC/USDA was finalized in May 1988 (EPAmore » 1990). The EPA (Woodward-Clyde Consultants, contractor) started immediate cleanup efforts in 1987 with the installation of an air stripper, a soil vapor extraction system, a groundwater extraction well, and groundwater and soil gas monitoring wells (Woodward-Clyde 1986, 1988a,b). After the EPA issued its Record of Decision (ROD; EPA 1990), the CCC/USDA (Argonne National Laboratory, contractor) took over operation of the treatment systems. The CCC/USDA conducted a site investigation (Argonne 1991, 1992a,b), during which a carbon tetrachloride plume in groundwater was discovered northeast of the former facility. This plume was not being captured by the existing groundwater extraction system. The remediation system was modified in 1994 (Argonne 1993) with the installation of a second groundwater extraction well to contain the contamination further. Subsequently, a detailed evaluation of the system resulted in a recommendation to pump only the second well to conserve water in the aquifer (Argonne 1995). Sampling and analysis after implementation of this recommendation showed continued decreases in the extent and concentrations of the contamination with only one well pumping (Argonne 1999). The CCC/USDA issued quarterly monitoring reports from 1988 to 2009. Complete documentation of the CCC/USDA characterization and remediation efforts, including the quarterly monitoring reports, is on the compact disc inside the back cover of this report. The EPA reported on the progress of the remediation systems in a series of five-year reviews (EPA 1993, 1999, 2004, 2009). These reports and other EPA documentation are also on the compact disc inside the back cover of this report, along with the Woodward-Clyde (1986, 1988a,b) documentation cited. Starting in 2006, the analytical results for groundwater (the only medium still being monitored) showed no carbon tetrachloride concentrations above the maximum contaminant level (MCL) of 5.0 g/L. Because the cleanup goals specified in the ROD (EPA 1990) had been met, the EPA removed the site from the NPL in November 2006 (Appendix A). In 2008 the National Pollutant Discharge Elimination System (NPDES) permit for the remediation system was deactivated, and a year later the EPA released its fourth and final five-year report (EPA 2009), indicating that no further action was required for the site and that the site was ready for unlimited use. In 2011-2012, the CCC/USDA decommissioned the remediation systems at Waverly. This report documents the decommission process and closure of the site.« less

High-Performance, Low Environmental Impact Refrigerants

NASA Technical Reports Server (NTRS)

McCullough, E. T.; Dhooge, P. M.; Glass, S. M.; Nimitz, J. S.

2001-01-01

Refrigerants used in process and facilities systems in the US include R-12, R-22, R-123, R-134a, R-404A, R-410A, R-500, and R-502. All but R-134a, R-404A, and R-410A contain ozone-depleting substances that will be phased out under the Montreal Protocol. Some of the substitutes do not perform as well as the refrigerants they are replacing, require new equipment, and have relatively high global warming potentials (GWPs). New refrigerants are needed that addresses environmental, safety, and performance issues simultaneously. In efforts sponsored by Ikon Corporation, NASA Kennedy Space Center (KSC), and the US Environmental Protection Agency (EPA), ETEC has developed and tested a new class of refrigerants, the Ikon (registered) refrigerants, based on iodofluorocarbons (IFCs). These refrigerants are nonflammable, have essentially zero ozone-depletion potential (ODP), low GWP, high performance (energy efficiency and capacity), and can be dropped into much existing equipment.

PUBLIC HEALTH AIR SURVEILLANCE EVALUATION ( PHASE ): WHAT IS IT? WHERE HAS IT BEEN? WHERE IS IT GOING?

EPA Science Inventory

NERL's Human Exposure and Atmospheric Sciences Division and other participants in the Public Health Air Surveillance Evaluation (PHASE) project will be discussing their results at the EPA Air Quality Conference in San Antonio, Texas on February 6, 2006. The PHASE project is a co...

Polycyclic aromatic hydrocarbons in biomass-burning emissions and their contribution to light absorption and aerosol toxicity.

PubMed

Samburova, Vera; Connolly, Jessica; Gyawali, Madhu; Yatavelli, Reddy L N; Watts, Adam C; Chakrabarty, Rajan K; Zielinska, Barbara; Moosmüller, Hans; Khlystov, Andrey

2016-10-15

In recent years, brown carbon (BrC) has been shown to be an important contributor to light absorption by biomass-burning atmospheric aerosols in the blue and near-ultraviolet (UV) part of the solar spectrum. Emission factors and optical properties of 113 polycyclic aromatic hydrocarbons (PAHs) were determined for combustion of five globally important fuels: Alaskan, Siberian, and Florida swamp peat, cheatgrass (Bromus tectorum), and ponderosa pine (Pinus ponderosa) needles. The emission factors of total analyzed PAHs were between 1.9±0.43.0±0.6 and 9.6±1.2-42.2±5.4mgPAHkg(-1)fuel for particle- and gas phase, respectively. Spectrophotometric analysis of the identified PAHs showed that perinaphthenone, methylpyrenes, and pyrene contributed the most to the total PAH light absorption with 17.2%, 3.3 to 10.5%, and 7.6% of the total particle-phase PAH absorptivity averaged over analyzed emissions from the fuels. In the gas phase, the top three PAH contributors to BrC were acenaphthylene (32.6%), anthracene (8.2%), and 2,4,5-trimethylnaphthalene (8.0%). Overall, the identified PAHs were responsible for 0.087-0.16% (0.13% on average) and 0.033-0.15% (0.11% on average) of the total light absorption by dichloromethane-acetone extracts of particle and gas emissions, respectively. Toxic equivalency factor (TEF) analysis of 16 PAHs prioritized by the United States Environmental Protection Agency (EPA) showed that benzo(a)pyrene contributed the most to the PAH carcinogenic potency of particle phase emissions (61.8-67.4% to the total carcinogenic potency of Σ16EPA PAHs), while naphthalene played the major role in carcinogenicity of the gas phase PAHs in the biomass-burning emission analyzed here (35.4-46.0% to the total carcinogenic potency of Σ16EPA PAHs). The 16 EPA-prioritized PAHs contributed only 22.1±6.2% to total particle and 23.4±11% to total gas phase PAH mass, thus toxic properties of biomass-burning PAH emissions are most likely underestimated. Copyright © 2016 Elsevier B.V. All rights reserved.

NHEXAS PHASE I ARIZONA STUDY--STANDARD OPERATING PROCEDURE FOR COLLECTION, STORAGE AND SHIPMENT OF DRINKING AND TAP WATER SAMPLES FOR VOCS (EPA METHOD 524.2) (UA-F-18.1)

EPA Science Inventory

The purpose of this SOP is to describe the collection, storage, and shipment of tap and drinking water samples for analysis by EPA method 524.2 (revision 4.0) for the NHEXAS Arizona project. This SOP provides a brief description of the sample containers, collection, preservation...

Estuary 2100 Project, Phase 1: Resilient Watersheds for a Changing Climate

EPA Pesticide Factsheets

Information about the SFBWQP Estuary 2100 Project, Phase 1: Resilient Watersheds for a Changing Climate , part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

ENVIRONMENTALLY SAFE, NO VOC AUTOMOTIVE COATING - PHASE II

EPA Science Inventory

The EPA recognizes that volatile organic compounds (VOCs) must be eliminated from automotive coating formulations to improve worker safety and reduce environmental pollution. The phase I project resulted in the production of a polymer-based coating material that was clear, ...

Two-Stage Enzymatic Preparation of Eicosapentaenoic Acid (EPA) And Docosahexaenoic Acid (DHA) Enriched Fish Oil Triacylglycerols.

PubMed

Zhang, Zhen; Liu, Fang; Ma, Xiang; Huang, Huihua; Wang, Yong

2018-01-10

Fish oil products in the form of triacylglycerols generally have relatively low contents of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and so it is of potential research and industrial interest to enrich the related contents in commercial products. Thereby an economical and efficient two-stage preparation of EPA and DHA enriched fish oil triacylglycerols is proposed in this study. The first stage was the partial hydrolysis of fish oil by only 0.2 wt.‰ AY "Amano" 400SD which led to increases of EPA and DHA contents in acylglycerols from 19.30 and 13.09 wt % to 25.95 and 22.06 wt %, respectively. Subsequently, products of the first stage were subjected to transesterification with EPA and DHA enriched fatty acid ethyl esters (EDEE) as the second stage to afford EPA and DHA enriched fish oil triacylglycerols by using as low as 2 wt % Novozyme 435. EDEEs prepared from fish oil ethyl ester, and recycled DHA and EPA, respectively, were applied in this stage. Final products prepared with two different sources of EDEEs were composed of 97.62 and 95.92 wt % of triacylglycerols, respectively, with EPA and DHA contents of 28.20 and 21.41 wt % for the former and 25.61 and 17.40 wt % for the latter. Results not only demonstrate this two-stage process's capability and industrial value for enriching EPA and DHA in fish oil products, but also offer new opportunities for the development of fortified fish oil products.

Electronic construction collaboration system : phase III.

DOT National Transportation Integrated Search

2011-12-01

This phase of the electronic collaboration project involved two major efforts: 1) implementation of AEC Sync (formerly known as Attolist), a web-based project management system (WPMS), on the Broadway Viaduct Bridge Project and the Iowa Falls Arch Br...

Methodology used to produce an encoded 1:100,000-scale digital hydrographic data layer for the Pacific Northwest

USGS Publications Warehouse

Fisher, B.J.

1996-01-01

The U.S. Geological Survey (USGS) has produced a River Reach File data layer for the Pacific Northwest for use in water-resource management applications. The Pacific Northwest (PNW) River Reach Files, a geo-referenced river reach data layer at 1:100,000-scale, are encoded with the U.S. Environmental Protection Agency"s (EPA) reach numbers. The encoding was a primary task of the River Reach project, because EPA"s reach identifiers are also an integral hydrologic component in a regional Northwest Environmental Data Base-an ongoing effort by Federal and State agencies to compile information on reach-specific resources on rivers in Oregon, Idaho, Washington, and western Montana. A unique conflation algorithm was developed by the USGS to transfer the EPA reach codes and other meaningful attributes from the 1:250,000-scale EPA TRACE graphic files to the PNW Reach Files. The PNW Reach Files also were designed so that reach-specific information upstream or downstream from a point in the stream network could be extracted from feature attribute tables or from a Geographic Information System. This report documents the methodology used to create this 1:100,000-scale hydrologic data layer.

Randomized controlled trial of ethyl-eicosapentaenoic acid in Huntington disease: the TREND-HD study.

PubMed

2008-12-01

To determine whether ethyl-eicosapentaenoic acid (ethyl-EPA), an omega-3 fatty acid, improves the motor features of Huntington disease. Six-month multicenter, randomized, double-blind, placebo-controlled trial followed by a 6-month open-label phase without disclosing initial treatment assignments. Forty-one research sites in the United States and Canada. Three hundred sixteen adults with Huntington disease, enriched for a population with shorter trinucleotide (cytosine-adenine-guanine) repeat length expansions. Random assignment to placebo or ethyl-EPA, 1 g twice a day, followed by open-label treatment with ethyl-EPA. Six-month change in the Total Motor Score 4 component of the Unified Huntington's Disease Rating Scale analyzed for all research participants and those with shorter cytosine-adenine-guanine repeat length expansions (<45). At 6 months, the Total Motor Score 4 point change for patients receiving ethyl-EPA did not differ from that for those receiving placebo. No differences were found in measures of function, cognition, or global impression. Before public disclosure of the 6-month placebo-controlled results, 192 individuals completed the open-label phase. The Total Motor Score 4 change did not worsen for those who received active treatment for 12 continuous months compared with those who received active treatment for only 6 months (2.0-point worsening; P=.02). Ethyl-EPA was not beneficial in patients with Huntington disease during 6 months of placebo-controlled evaluation. Clinical Trial Registry clinicaltrials.gov Identifier: NCT00146211.

Phase I clinical trial of O-Acetylated pectin conjugate, a plant polysaccharide based typhoid vaccine

PubMed Central

Szu, Shousun C.; Lin, Kimi F-Y; Hunt, Steven; Chu, Chiayung; Thinh, Nguyen Duc

2014-01-01

Background Typhoid fever remains an important cause of morbidity and mortality in the developing countries. Vi capsular polysaccharide conjugate vaccine demonstrated safety and efficacy in young children in high endemic regions. A novel typhoid conjugate vaccine based on plant polysaccharide pectin was studied in a phase I trial. Methods Fruit pectin, having the same carbohydrate backbone structure as Vi, was purified from citrus peel and used as the polysaccharide source to prepare a semi-synthetic typhoid conjugate vaccine. Pectin was chemically O-acetylated (OAcPec) to antigenically resemble Vi and conjugated to carrier protein rEPA, a recombinant exoprotein A from Pseudomonas aeruginosa. 25 healthy volunteers, 18–45 years old, were injected once with OAcPec-rEPA. Safety and IgG antibodies reactive with Vi and pectin were analyzed. Results No vaccine associated serious adverse reaction was reported. Six weeks after the injection of OAcPec-rEPA, 64% of the volunteers elicited >4 fold rise of anti-Vi IgG. At 26 weeks the level declined, but the difference between the levels at 6 and 26 weeks are not statistically significant. There is a direct correlation between the level of anti-Vi IgG before and after the injection (R2 = 0.96). The anti-Vi IgG can be absorbed by Vi, but not by pectin. There was no corresponding increase of anti-pectin after the injection, indicating the antibody response to OAcPec-rEPA was specific to Vi. There is no Vi-rEPA data in US adults for comparison of immune responses. The OAcPec-rEPA elicited significantly less IgG anti-Vi in US adults than those by Vi-rEPA in Vietnamese adults. Conclusion The O-acetylated pectin conjugate, a plant based typhoid vaccine, is safe and immunogenic in adult volunteers. PMID:24657719

Gas-Liquid Flows and Phase Separation

NASA Technical Reports Server (NTRS)

McQuillen, John

2004-01-01

Common issues for space system designers include:Ability to Verify Performance in Normal Gravity prior to Deployment; System Stability; Phase Accumulation & Shedding; Phase Separation; Flow Distribution through Tees & Manifolds Boiling Crisis; Heat Transfer Coefficient; and Pressure Drop.The report concludes:Guidance similar to "A design that operates in a single phase is less complex than a design that has two-phase flow" is not always true considering the amount of effort spent on pressurizing, subcooling and phase separators to ensure single phase operation. While there is still much to learn about two-phase flow in reduced gravity, we have a good start. Focus now needs to be directed more towards system level problems .

Transport of pollutants in plumes and PEPES: a study of transport of pollutants in power plant plumes, urban and industrial plumes, and persistent elevated pollution episodes. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Vaughan, W.M.

Because of the increased concern for the regional nature of secondary air pollutants (e.g., sulfates and oxidants) the U.S. Environmental Protection Agency (EPA) sponsored a major field program in the northeastern United States during the summer of 1980. Two EPA field programs were actually carried out simultaneously. One addressed persistent elevated pollution episodes, and the other continued the 1979 northeast regional oxidant study in developing part of the data base for the regional oxidant model. Field activities were based in Columbus, OH. Ten research aircraft and several mobile and stationary surface-monitoring platforms from three EPA contractors, seven Federal Agencies, andmore » four Universities participated in the intensive measurement program between 16 July and 15 August 1980. Pollutants measured included SO/sub 2/, NO, NOx, O/sub 3/, sulfate, nitrate, and aerosols. This report describes the contractors activities. Their aircraft logged over 350 flight hours in 100 missions ranging as far east as Laconia, NH, as far south as Montgomery, AL, as far west as Texarkana, AR, and as far north as Saginaw, MI. Descriptive analyses are summarized for urban plume missions and regional missions. The quality assurance program is described, showing the efforts made to develop a well coordinated data base. Sources for reports and data are provided.« less

One fish, two fish, we QC fish: controlling data quality among more than 50 organizations over a four-year period.

PubMed

Riddick, L; Simbanin, C

2001-01-01

EPA is conducting a National Study of Chemical Residues in Lake Fish Tissue. The study involves five analytical laboratories, multiple sampling teams from each of the 47 participating states, several tribes, all 10 EPA Regions and several EPA program offices, with input from other federal agencies. To fulfill study objectives, state and tribal sampling teams are voluntarily collecting predator and bottom-dwelling fish from approximately 500 randomly selected lakes over a 4-year period. The fish will be analyzed for more than 300 pollutants. The long-term nature of the study, combined with the large number of participants, created several QA challenges: (1) controlling variability among sampling activities performed by different sampling teams from more than 50 organizations over a 4-year period; (2) controlling variability in lab processes over a 4-year period; (3) generating results that will meet the primary study objectives for use by OW statisticians; (4) generating results that will meet the undefined needs of more than 50 participating organizations; and (5) devising a system for evaluating and defining data quality and for reporting data quality assessments concurrently with the data to ensure that assessment efforts are streamlined and that assessments are consistent among organizations. This paper describes the QA program employed for the study and presents an interim assessment of the program's effectiveness.

DIGGING DEEPER INTO DEEP DATA: MOLECULAR DOCKING AS A HYPOTHESIS-DRIVEN BIOPHYSICAL INTERROGATION SYSTEM IN COMPUTATIONAL TOXICOLOGY.

EPA Science Inventory

Developing and evaluating prediactive strategies to elucidate the mode of biological activity of environmental chemicals is a major objective of the concerted efforts of the US-EPA's computational toxicology program.

Report: Assessing EPA’s Efforts to Protect Sensitive Information

EPA Pesticide Factsheets

Report #2006-S-00006, September 19, 2006. This is the EPA OIG's completed Data Collection Instrument, as prescribed by the PCIE to use in meeting its requirements under OMB Memo M-06-16, Protection of Sensitive Agency Information.

IAQ Scientific Findings Resource Bank

EPA Science Inventory

This effort is being conducted under an interagency agreement between the US EPA and the US Department of Energy- the Lawrence Berkeley National Laboratory (LBNL). Under this project, LBNL will conduct literature reviews and analyses which quantify the health and productivity be...

AN INTEGRATED WATERSHED APPROACH LINKING SALMONID PRODUCTIVITY TO FRESHWATER HABITAT

EPA Science Inventory

EPA's Western Ecology Division is undertaking research addressing catchment-scale dynamics of freshwater habitat productivity for native fishes. Through partnerships with state and federal agencies and private landowners, current field efforts focus on linkages among stream chemi...

DEVELOPING A TOOL FOR ENVIRONMENTALLY PREFERABLE PURCHASING

EPA Science Inventory

LCA-based guidance was developed by EPA under the Framework for Responsible Environmental Decision Making (FRED) effort to demonstrate how to conduct a relative comparison between product types to determine environmental preferability. It identifies data collection needs and iss...

Protecting Source Water in West Virginia

EPA Pesticide Factsheets

EPA funds helped WV residents and utilities in source water protection efforts and emergency planning following the Elk River chemical spill of 2014. The spill contaminated the water supply of nearly 300,000 people in the capitol and surrounding counties.

Biofuels Research at EPA - slides

EPA Science Inventory

The U.S. Environmental Protection Agency’s Office of Research and Development supports the Agency’s mission to protect human health and the environment through its research programs. ORD scientists and engineers lead research efforts designed to be credible, relevant and timely ...

NEXT GENERATION MULTIMEDIA/MULTIPATHWAY EXPOSURE MODELING

EPA Science Inventory

The Stochastic Human Exposure and Dose Simulation model for pesticides (SHEDS-Pesticides) supports the efforts of EPA to better understand human exposures and doses to multimedia, multipathway pollutants. It is a physically-based, probabilistic computer model that predicts, for u...

About Using Predictive Models and Tools To Assess Chemicals under TSCA

EPA Pesticide Factsheets

As part of EPA's effort to promote chemical safety, OPPT provides public access to predictive models and tools which can help inform the public on the hazards and risks of substances and improve chemical management decisions.

Report on Waste Disposal Workshops for a Radiological ...

EPA Pesticide Factsheets

Symposium Paper EPA organized a series of workshops to specifically address waste disposal demands resulting from an RDD incident. These workshops leveraged planning efforts for EPA’s Liberty RadEx exercise held in April 2010 in Philadelphia, PA.

Water Resource Adaptation Program

EPA Science Inventory

The Water Resource Adaptation Program (WRAP) contributes to the U.S. Environmental Protection Agency’s (U.S. EPA) efforts to provide water resource managers and decision makers with the tools needed to adapt water resources to demographic and economic development, and future clim...

Environmental Assessment of Biofuel Options

EPA Science Inventory

The EPA Office of Transportation and Air Quality is responsible for administering the Second Renewable Fuels Standard under the Energy Independence and Security Act of 2007. The progress of these efforts and the associated environmental impacts are assessed in the Triennial Biof...

White House Announcement on the Regulation of Biotechnology

EPA Pesticide Factsheets

The White House posted a blog unveiling documents as part of the Administration’s continuing effort to modernize the federal regulatory system for biotechnology products as well as clarify various roles of the EPA, FDA in evaluating new biotechnologies.

EPA and States' Collective Efforts Lead to Regulatory Action on Dicamba

EPA Pesticide Factsheets

Agreement with Monsanto, BASF and DuPont on measures to further minimize the potential for drift to damage neighboring crops from the use of dicamba formulations used to control weeds in genetically modified cotton and soybeans.

MAP OF ECOREGIONS OF OREGON

EPA Science Inventory

The ecoregions of Oregon have been identified, mapped, and described and provide a geographic structure for environmental resources research, assessment, monitoring, and management. This project is part of a larger effort by the U.S. EPA to create a national, hierarchical ecoregi...

MAP OF ECOREGIONS OF WYOMING

EPA Science Inventory

The ecoregions of Wyoming have been identified, mapped, and described and provide a geographic structure for environmental resources research, assessment, monitoring, and management. This project is part of a larger effort by the U.S. EPA to create a national, hierarchical ecore...

Environmental Characteristics of EPA, NRC, and DOE Sites Contaminated with Radioactive Substances

EPA Pesticide Factsheets

This report is one of several documents developed cooperatively by the Interagency Environmental Pathway Modeling Workgroup to help bring a uniform approach to solving environmental modeling problems common to site remediation and restoration efforts.

Final Rule for Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments

EPA Pesticide Factsheets

This common set of test requirements is intended to streamline laboratory efforts for EPA and industry and to form the basis for internationally harmonized test procedures for nearly all categories of engines.

Securing Mitigation as Injunctive Relief in Certain Civil Enforcement Settlements (2nd edition)

EPA Pesticide Factsheets

To ensure that EPA's environmental enforcement efforts not only correct and deter illegal conduct but maximize the redress of its consequences, this memorandum is intended to strongly encourage case teams to seek mitigation.

An examination of data quality on QSAR Modeling in regards ...

EPA Pesticide Factsheets

The development of QSAR models is critically dependent on the quality of available data. As part of our efforts to develop public platforms to provide access to predictive models, we have attempted to discriminate the influence of the quality versus quantity of data available to develop and validate QSAR models. We have focused our efforts on the widely used EPISuite software that was initially developed over two decades ago and, specifically, on the PHYSPROP dataset used to train the EPISuite prediction models. This presentation will review our approaches to examining key datasets, the delivery of curated data and the development of machine-learning models for thirteen separate property endpoints of interest to environmental science. We will also review how these data will be made freely accessible to the community via a new “chemistry dashboard”. This abstract does not reflect U.S. EPA policy. presentation at UNC-CH.

Tire Crumb Research Study Literature Review / Gap ...

EPA Pesticide Factsheets

In order to more fully understand data gaps in human exposure and toxicity to tire crumb materials, ATSDR, CPSC and EPA undertook a collaborative effort in the form of a scientific literature review and subsequent gaps analysis. The first objective of the Literature Review and Gap Analysis (LRGA) collaboration was to identify the existing body of literature related specifically to human exposure to tire crumb materials through the use of synthetic turf athletic fields and playgrounds. The second objective was to characterize and summarize the relevant data from the scientific literature. The final objective was to review the summary information and identify data gaps to build on the current understanding of the state-of-the-science and inform the development of specific research efforts that would be most impactful in the near-term. Because of the need for additional information, the U.S. Environmental Protection Agency (EPA), the Centers for Disease Control and Prevention/Agency for Toxic Substances and Disease Registry (ATSDR), and the U.S. Consumer Product Safety Commission (CPSC) launched a multi-agency action plan to study key environmental human health questions. The Federal Research Action Plan includes numerous activities, including research studies (U.S. EPA, 2016). A key objective of the Action Plan is to identify key knowledge gaps.

Final work plan : phase II investigation of potential contamination at the former CCC/USDA grain storage facility in Savannah, Missouri.

DOE Office of Scientific and Technical Information (OSTI.GOV)

LaFreniere, L. M.; Environmental Science Division

From approximately 1949 until 1970, the Commodity Credit Corporation of the U.S. Department of Agriculture (CCC/USDA) operated a grain storage facility on federally owned property approximately 0.25 mi northwest of Savannah, Missouri (Figure 1.1). During this time, commercial grain fumigants containing carbon tetrachloride were commonly used by the CCC/USDA and the private grain storage industry to preserve grain in their facilities. In November 1998, carbon tetrachloride was detected in a private well (Morgan) roughly 50 ft south of the former CCC/USDA facility, as a result of statewide screening of private wells near former CCC/USDA facilities, conducted in Missouri by themore » U.S. Environmental Protection Agency (EPA 1999). The 1998 and subsequent investigations by the EPA and the Missouri Department of Natural Resources (MoDNR) confirmed the presence of carbon tetrachloride in the Morgan well, as well as in a second well (on property currently occupied by the Missouri Department of Transportation [MoDOT]) described as being approximately 400 ft east of the former CCC/USDA facility. The identified concentrations in these two wells were above the EPA maximum contaminant level (MCL) and the Missouri risk-based corrective action default target level (MRBCA DTL) values of 5.0 {micro}g/L for carbon tetrachloride in water used for domestic purposes (EPA 1999; MoDNR 2000a,b, 2006). Because the observed contamination in the Morgan and MoDOT wells might be linked to the past use of carbon tetrachloride-based fumigants at its former grain storage facility, the CCC/USDA is conducting an investigation to (1) characterize the source(s), extent, and factors controlling the subsurface distribution and movement of carbon tetrachloride at Savannah and (2) evaluate the potential risks to human health, public welfare, and the environment posed by the contamination. This work is being performed in accord with the Intergovernmental Agreement established between the Farm Service Agency of the USDA and the MoDNR, to address carbon tetrachloride contamination potentially associated with a number of former CCC/USDA grain storage facilities in Missouri. The site characterization at Savannah is being conducted on behalf of the CCC/USDA by the Environmental Science Division of Argonne National Laboratory. The investigation at Savannah is being conducted in phases. This approach is being used by the CCC/USDA and Argonne, with the approval of the MoDNR, so that information obtained and interpretations developed during each incremental stage of the investigation can be used most effectively to guide subsequent phases of the program. Phase I of the Savannah program was conducted in October-November 2007 and January 2008 (Argonne 2007a, 2008). This site-specific Work Plan provides a brief summary of the Phase I findings and the results of groundwater level monitoring that has been ongoing since completion of the Phase I study and also outlines technical objectives, investigation tasks, and investigation methods for Phase II of the site characterization at Savannah.« less

NPDES Permits for Phase 2 Stormwater Program in Puerto Rico

EPA Pesticide Factsheets

EPA's 1999 stormwater Phase II regulations established small municipal separate storm sewer systems (MS4s) in urbanized areas, and small MS4s outside the urbanized areas that are designated by the permitting authority, to obtain NPDES permit coverage.

A STUDY TO EVALUATE THE LEVELS OF DIOXIN-LIKE ...

EPA Pesticide Factsheets

The Environmental Protection Agency (EPA), in cooperation with USDA and the US Food and Drug Administration (FDA), has undertaken a program to study the presence of dioxin-like compounds in animal feeds. Two phases of this program have been completed, and this paper reports on the third phase. The first phase was a study on the mass balance of dioxins in lactating cows. The objective of that study was to quantify the role feeds play in total dairy cow exposures. The second phase of the program involved the collections and measurement of dioxins in minor feed components. Dioxins in specific targeted animal feed components of interest, including animal and plant byproducts were measured. The third phase involved sampling of total mixed dairy feeds and feed components from dairy facilities around the United States, and measuring for dioxin-like compounds. Lorber, M; Ferrario, J; Byrne, C; Greene, C; Cyrus, A. 2004. A Study to Evaluate the Levels of Dioxin-Like Compounds in Dairy Feeds in the United States. Organohalogen Compounds 66: 1958-1965. journal articles

Industrial applications study. Volume V. Bibliography of relevant literature. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Brown, Harry L.; Hamel, Bernard B.; Karamchetty, Som

1976-12-01

This five-volume report represents an initial Phase O evaluation of waste heat recovery and utilization potential in the manufacturing portion of the industrial sector. The scope of this initial phase was limited to the two-digit SIC level and addressed the feasibility of obtaining in-depth energy information in the industrial sector. Within this phase, a successful methodology and approaches for data gathering and assessment are established. Using these approaches, energy use and waste heat profiles were developed at the 2-digit level; with this data, waste heat utilization technologies were evaluated. The first section of the bibliography lists extensive citations for allmore » industries. The next section is composed of an extensive literature search with abstracts for industrial energy conservation. EPA publications on specific industries and general references conclude the publication. (MCW)« less

METHOD 521: DETERMINATION OF NITROSAMINES IN DRINKING WATER BY SOLID PHASE EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY WITH LARGE VOLUME INJECTION AND CHEMICAL IONIZATION TANDEM MASS SPECTROMETRY (MS/MS)

EPA Science Inventory

NDMA is an emerging drinking water contaminant that is of interest to EPA and the environmental community. Its presence in drinking water is a potential health concern, because the EPA's IRIS data base lists the concentration of NDMA required to result in a one in one million li...

Superfund record of decision (EPA Region 3): Letterkenny Army Depot (PDO and SE Areas), Chambersburg, Franklin County, PA, September 30, 1998

DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

1998-11-01

The decision document presents the selected remedial action for the Phase 1 Parcels at Letterkenny Army Depot (LEAD), Chambersburg, Pennsylvania. Based on consideration of he CERCLA requirements, the NCP, the detailed analysis of the alternatives using the nine criteria, and public and state comments, the Army and EPA have selected an institutional controls remedy for this Site.

NHEXAS PHASE I ARIZONA STUDY--STANDARD OPERATING PROCEDURE FOR COLLECTION, STORAGE AND SHIPMENT OF DRINKING AND TAP WATER SAMPLES FOR TRACE METALS (EPA METHOD 200.8) (UA-F-16.1)

EPA Science Inventory

The purpose of this SOP is to describe how to collect, store, and ship tap and drinking water samples for analysis by EPA Method 200.8 (revision 4.4) for the NHEXAS Arizona project. This SOP provides a brief description of the sample containers, collection, preservation, storage...

Comparative Study of EPA-enriched Phosphatidylcholine and EPA-enriched Phosphatidylserine on Lipid Metabolism in Mice.

PubMed

Ding, Lin; Wang, Dan; Zhou, Miaomiao; Du, Lei; Xu, Jie; Xue, Changhu; Wang, Yuming

2016-07-01

Recent studies have shown that EPA enriched PLs have beneficial effects on lipid metabolism. Our previous study has demonstrated that the anti-obesity and hypolipidemic effects of EPA-PL were superior to DHA-PL. In the present study, we comparatively evaluated the effects of EPA-enriched phosphatidylcholine (EPA-PC) and EPA-enriched phosphatidylserine (EPA-PS) on lipid metabolism in mice. Both 2% dietary EPA-PC and EPA-PS significantly improved serum and hepatic lipid levels in mice. The HDL-c level in mice on EPA-PC diet was significantly higher than the other two groups. The level of DHA in hepatic TG and PL were significantly increased in both EPA-PC and EPA-PS fed groups (98.3 and 117.8%, respectively; p < 0.05). Notably, the proportion of DHA in EPA-PS group was significantly higher than the EPA-PC group. EPA-PC and EPA-PS suppressed hepatic SREBP-1c mediated lipogenesis and activated PPARα mediated fatty acid β-oxidation in the liver. These data are the first to indicate that EPA-PS has beneficial effects on lipid metabolism.

Integrated model development for liquid fueled rocket propulsion systems

NASA Technical Reports Server (NTRS)

Santi, L. Michael

1993-01-01

As detailed in the original statement of work, the objective of phase two of this research effort was to develop a general framework for rocket engine performance prediction that integrates physical principles, a rigorous mathematical formalism, component level test data, system level test data, and theory-observation reconciliation. Specific phase two development tasks are defined.

Hazardous waste management programs; Florida: authorization for interim authorization phase I--Environmental Protection Agency. Notice of final determination.

PubMed

1982-05-07

The State of Florida has applied for interim Authorization Phase I. EPA has reviewed Florida's application for Phase I and has determined that Florida's hazardous waste program is substantially equivalent to the Federal program covered by Phase I. The State of Florida is, hereby, granted Interim Authorization for Phase I to operate the State 's hazardous waste program, in lieu of the Federal program.

Avoiding pitfalls in the determination of halocarboxylic acids: the photochemistry of methylation.

PubMed

Rubio, F J; Urbansky, E T; Magnuson, M L

2000-06-01

Haloethanoic (haloacetic) acids are formed during chlorination of drinking water and are regulated by the Environmental Protection Agency (EPA). These compounds are normally quantified by gas chromatography with electron capture detection (GC-ECD) as the methyl esters. EPA Method 552 uses diazomethane (CH2N2) for this purpose, but has only been validated by EPA for HAA6: chloro-, dichloro-, bromo-, dibromo-, bromochloro- and trichloroacetic acids. EPA Method 552.2 was developed and validated for all nine analytes (HAA9 = HAA6 + dibromochloro-, bromodichloro- and tribromoethanoic acids). Since the promulgation of Method 552.2, which uses acidic methanol, a debate has ensued over discrepancies observed by various laboratories when using diazomethane instead. In an effort to identify and eliminate potential sources for these discrepancies, a comparative study was undertaken for HAA9. Better accuracy and precision were observed for all HAA9 species by Method 552.2; recoveries were satisfactory in de-ionized and tap water. Method 552 remains satisfactory for HAA6. Systematic differences in instrumental response are observed for the two methods, but these are precise and may be accounted for using similarly treated standards and analyte-fortified (spiked) samples. That notwithstanding, Method 552 (CH2N2) was shown to be unsuitable for dibromochloro-, bromodichloro- and tribromoethanoic acids (HAA9-6). The primary problem appears to be a photoactivated reaction between diazomethane and the HAA9-6 analytes; however, side reactions were found to occur even in the dark. Analyte loss is most pronounced under typical laboratory lighting (white F40 fluorescent lamps + sunlight), but it is also observed under Philips gold F40 lamps (lambda > or = 520 nm), and in the dark.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Serne, R. Jeffrey; Westsik, Joseph H.; Williams, Benjamin D.

This report describes the results from long-term laboratory leach tests performed at Pacific Northwest National Laboratory (PNNL) for Washington River Protection Solutions (WRPS) to evaluate the release of key constituents from monoliths of Cast Stone prepared with four simulated low-activity waste (LAW) liquid waste streams. Specific objectives of the Cast Stone long-term leach tests described in this report focused on four activities: 1. Extending the leaching times for selected ongoing EPA-1315 tests on monoliths made with LAW simulants beyond the conventional 63-day time period up to 609 days reported herein (with some tests continuing that will be documented later) inmore » an effort to evaluate long-term leaching properties of Cast Stone to support future performance assessment activities. 2. Starting new EPA-1315 leach tests on archived Cast Stone monoliths made with four LAW simulants using two leachants (deionized water [DIW] and simulated Hanford Integrated Disposal Facility (IDF) Site vadose zone pore water [VZP]). 3. Evaluating the impacts of varying the iodide loading (starting iodide concentrations) in one LAW simulant (7.8 M Na Hanford Tank Waste Operations Simulator (HTWOS) Average) by manufacturing new Cast Stone monoliths and repeating the EPA-1315 leach tests using DIW and the VZP leachants. 4. Evaluating the impacts of using a non-pertechnetate form of Tc that is present in some Hanford tanks. In this activity one LAW simulant (7.8 M Na HTWOS Average) was spiked with a Tc(I)-tricarbonyl gluconate species and then solidified into Cast Stone monoliths. Cured monoliths were leached using the EPA-1315 leach protocol with DIW and VZP. The leach results for the Tc-Gluconate Cast Stone monoliths were compared to Cast Stone monoliths pertechnetate.« less

REPORT TO CONGRESS ON BLACK CARBON | Science ...

EPA Pesticide Factsheets

The Report to Congress on Black Carbon describes domestic and international sources of black carbon emissions, and summarizes available scientific information on the climate effects of black carbon. Further, the Report evaluates available black carbon mitigation options and their potential for protecting climate, public health, and the environment. The EPA Advisory Council on Clean Air Compliance Analysis has peer-reviewed the report. In the October 2009 Interior Appropriations bill, Congress requested that EPA, in consultation with other Federal agencies, study the emissions and impacts of black carbon in the US and internationally. To fulfill this charge, EPA has conducted an intensive effort to compile, assess, and summarize available scientific information on the current and future impacts of black carbon, and to evaluate the effectiveness of available mitigation approaches and technologies for protecting climate, public health, and the environment.

SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION PROGRAM: TECHNOLOGY WITH AN IMPACT

EPA Science Inventory

SITE promotes the development and implementation of innovative technologies for remediating hazardous waste sites and for evaluating the nature and extent of hazardous waste site contamination through four component segments. The SITE Program is a key element in EPA's efforts...

SUPERFUND SOILS DATA MANAGEMENT SYSTEM

EPA Science Inventory

This paper describes the Superfund Soil Data Management System (DMS), a PC-based data system being developed by the U.S. Environmental Protection Agency (EPA) in its effort to manage and evaluate treatment and performance data for contaminated soil, sludge, and debris. his system...

Assumable Waters Subcommittee December 1-2, 2015, Meeting Summary

EPA Pesticide Factsheets

The purpose of the meeting was to continue the subcommittee's efforts to provide advice and recommendations on how EPA can clarify which waters a State or Tribe assumes permitting responsibility for under an approved Clean Water Act section 404 program.

National Drinking Water Advisory Council November 17 - 19, 2015: Public Meeting Materials

EPA Pesticide Factsheets

Regulatory and related updates, final recommendations of the Lead and Copper Working Group to the NDWAC, Statement of Dissent to the NDWAC, EPA's efforts to address harmful Algal Blooms in drinking water and technologies for Legionella control.

National Priorities: Transdisciplinary Research into Detecting and Controlling Lead in Drinking Water

EPA Pesticide Factsheets

EPA seeks applications for research on identifying communities at high risk of adverse health effects of lead in drinking water, identifying opportunities to mitigate these risks, conduct efforts to inform interested parties of these risks & opportunities.

EPA Funding Will Help Clean Diesel Projects in New England States

EPA Pesticide Factsheets

EPA’s State Clean Diesel Program awarded a total of approximately $1.7 million to the six New England states of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont to support states’ efforts to reduce diesel pollution.

A Systems Approach to Small Fish Ecotoxicogenomics

EPA Science Inventory

At present, the largest and most integrated effort in the area of ecotoxicogenomics within US Environmental Protection Agency (EPA), Office of Research and Development is a research program titled Linkage of exposure and effects using genomics, proteomics, and metabolomics in sma...

Virgin Islands: Coral Bay Watershed Management (A Former EPA CARE Project)

EPA Pesticide Factsheets

The Coral Bay Watershed Management is a recipient of the Level II CARE cooperative agreement to continue and expand its collective efforts to stop erosion, sediment, and storm-water pollution of Coral Bay, improve solid waste management,

Investigation of Corrosion-Influencing Factors in Underground Storage Tanks with Diesel Service

EPA Science Inventory

This paper summarized the research findings of an effort undertaken by EPA to understand possible causes and solutions to widespread reports of severe corrosion of metal components in underground storage tank systems storing diesel fuel since 2007.

GLOBAL CHANGE MULTI-YEAR PLAN

EPA Science Inventory

The Global Change Research Act of 1990 establishes the U.S. Global Change Research Program to coordinate a comprehensive research program on global change. This is an inter-Agency effort, with EPA bearing responsibility to assess the consequences of global change on human health,...

EPA Science Matters Newsletter: Taking Action on Climate Change

EPA Pesticide Factsheets

The U.S. Global Change Research Program (USGCRP) emphasizes the foundational role of science in understanding global change and its impacts on the environment. The U.S. Environmental Protection Agency is an integral and important part of that effort

High Throughput Transcriptomics: From screening to pathways

EPA Science Inventory

The EPA ToxCast effort has screened thousands of chemicals across hundreds of high-throughput in vitro screening assays. The project is now leveraging high-throughput transcriptomic (HTTr) technologies to substantially expand its coverage of biological pathways. The first HTTr sc...

TOXINS FROM CYANOBACTERIA IN WATER

EPA Science Inventory

This project is part of a larger U. S. Environmental Protection Agency (EPA) effort, which includes the Office of Water, to investigate algal toxins in surface water supplies and drinking water. Toxins produced by cyanobacteria (blue-green algae) are among the most potent known ...

Semiannual Report: Oct 1, 1997 - Mar 31, 1998

EPA Pesticide Factsheets

Semiannual Report #EPA-350-R-98-001, May, 1998. As evidenced by the success of our efforts in these and other areas, the Office of Inspector General remains committed to assisting the Agency in the accomplishment of its environmental goals.

APPROACHING ZERO DISCHARGE IN SURFACE FINISHING

EPA Science Inventory

This document provides guidance to surface finishing manufacturers on control technologies and process changes for approaching zero discharge (AZD). AZD is a key theme underlying the Strategic Goals Program (SGP). The SGP is a cooperative effort between the EPA nd the American El...

EPA Awards $25K Grant to Lewiston, Maine Non-profit for Indoor Air Quality Efforts

EPA Pesticide Factsheets

A non-profit in Lewiston, Maine, has received $25,000 from the US Environmental Protection Agency to reduce health threats caused by poor indoor air quality, including radon indoors, mold and secondhand smoke.

EPA APPROACH TO EVALUATION OF INDICATORS FOR ECOLOGICAL RISK ASSESSMENT

EPA Science Inventory

The U.S. Environmental Protection Agency's Office of Research and Development (ORD) is continuing research efforts initiated by the Environmental Monitoring and Assessment Program (EMAP) on ecological indicator development. An ORD Ecological Indicators Working Group has been form...

LEVEL III AND IV ECOREGIONS OF ILLINOIS

EPA Science Inventory

The ecoregions of Illinois have been identified, mapped, and described; they provide a geographic structure for environmental resources research, assessment, monitoring, and management. This project is part of a larger effort by the U.S. EPA to create a national, hierarchical ec...

INTRODUCING CHANGES TO QUALITY SYSTEMS IN LARGE, ESTABLISHED ORGANIZATIONS

EPA Science Inventory

To achieve the agency's mission of having defensible and reliable scientific data with which to make informed decisions, the EPA Quality Assurance (QA) community must continue its successful efforts in increasing support for QA activities through personal communication and carefu...

Report: EPA Has Improved Efforts to Reduce Unliquidated Obligations in Superfund Cooperative Agreements, But a Uniform Policy Is Needed

EPA Pesticide Factsheets

Report #09-P-0241, September 22, 2009. The regions audited (Regions 3, 5, and 8) have implemented effective procedures to adequately monitor the status of obligations under Superfund Cooperative Agreements.

OVERVIEW OF THE EPA/DOE MINE WASTE TECHNOLOGY PROGRAM

EPA Science Inventory

This meeting was held at the Hilton Cincinnati Netherland plaza in Cincinnati, OH. The purpose of thie meeting was to discuss current Hazardous Substance Research Center and USEPA/ ORD superfund research, identify research needs, and foster collaborative efforts. The presentatio...

BIOREMEDIATION IN THE FIELD SEARCH SYSTEM (BFSS) - USER DOCUMENTATION

EPA Science Inventory

The Bioremediation Field Initiative is a cooperative effort of the U.S. EPA's Office of Research and Development (ORD), Office of Solid Waste and Emergency Response (OSWER), and regional offices, and other federal agencies, state agencies, industry, and universities to ...

Assessment of the role of bottomland hardwoods in sediment and erosion control

USGS Publications Warehouse

Molinas, A.; Auble, Gregor T.; Segelquist, C.A.; Ischinger, Lee S.

1988-01-01

Drainage and clearing of bottomland hardwoods have long been recognized by the U.S. Environmental Protection Agency (EPA) and the U.S. Fish and Wildlife Service (Service) as important impacts of Federal water projects in the lower Mississippi River Valley. More recently, the water quality impacts of such projects (e.g., increases in sediments, nutrients, and pesticides) have also become of concern. In 1984, in an effort to better define problems concerning wetland losses and water degradation, EPA initiated a cooperative project with the Western Energy and Land Use Team (now the National Ecology Research Center) of the Service. Three phases of the project were identified: 1. To collect existing literature and data; 2. To select, develop, and test the utility of methods to quantify the relationships between land use, cover types, soils, hydrology, and water quality (as represented by sediment); and 3. To apply selected methodologies to several sites within the Yazoo Basin of Mississippi to determine the, potential effectiveness of various management alternatives to reduce sediment yield, increase sediment deposition, and improve water quality. Methods development focused on linking a simulation of water and sediment movement to a computerized geographic information system. We had several objectives for the resulting model. We desired that it should: 1. Estimate the importance of bottomland and hardwoods as a cover type that performs the functions of erosion and sediment control, 2. Simulate effects of proportions of ' various cover types and their specific spatial configurations, 3. Be applicable to moderately large spatial areas with minimal site-specific calibration, 4. Simulate spatial patterns of sediment loss-gain over time, and 5. Represent both sediment detachment and transport. While it was recognized that impacts and management alternatives could be sorted roughly into landscape measures and channel measures, the decision was made to focus study efforts mainly on landscape measures. Landscape measures include altered drainage and flooding patterns, altered cover types (e.g., conversion of bottomland hardwoods to agricultural crops, reforestation of cropland to bottomland hardwoods, and creation of riparian buffer strips), altered cropping and tillage patterns, altered routing of water, and creation of buffer strips along wetlands and channel margins. Channel measures include vegetative bank stabilization, grade control structures, and regulation of channel water volume and velocity. During the first year of the study, EPA decided not to fund the third phase of the project. This required considerable rescoping of the project with the result that application of the sediment mobilization, routing, and deposition models to various management alternatives and portions of the Yazoo Basin was somewhat restricted. We believe, however, that this report will provide a good understanding of the various modes of sediment mobilization, transport, and deposition within the Yazoo Basin, as well as of the role of bottomland hardwoods. The model developed in this study could be applied to a variety of management or mitigation alternatives prior to implementation to determine their relative effectiveness. Policy, political, and socio-economic consequences of any proposed management/mitigation practice, however, must ultimately be taken into consideration by those charged with management of water resources within the Yazoo Basin before any practice is implemented. This study makes no effort to judge the feasibility of management alternatives in this regard.

Enhanced eicosapentaenoic acid production by a new deep-sea marine bacterium Shewanella electrodiphila MAR441T.

PubMed

Zhang, Jinwei; Burgess, J Grant

2017-01-01

Omega-3 fatty acids are products of secondary metabolism, essential for growth and important for human health. Although there are numerous reports of bacterial production of omega-3 fatty acids, less information is available on the biotechnological production of these compounds from bacteria. The production of eicosapentaenoic acid (EPA, 20:5ω3) by a new species of marine bacteria Shewanella electrodiphila MAR441T was investigated under different fermentation conditions. This strain produced a high percentage (up to 26%) of total fatty acids and high yields (mg / g of biomass) of EPA at or below the optimal growth temperature. At higher growth temperatures these values decreased greatly. The amount of EPA produced was affected by the carbon source, which also influenced fatty acid composition. This strain required Na+ for growth and EPA synthesis and cells harvested at late exponential or early stationary phase had a higher EPA content. Both the highest amounts (20 mg g-1) and highest percent EPA content (18%) occurred with growth on L-proline and (NH4)2SO4. The addition of cerulenin further enhanced EPA production to 30 mg g-1. Chemical mutagenesis using NTG allowed the isolation of mutants with improved levels of EPA content (from 9.7 to 15.8 mg g-1) when grown at 15°C. Thus, the yields of EPA could be substantially enhanced without the need for recombinant DNA technology, often a commercial requirement for food supplement manufacture.

Enhanced eicosapentaenoic acid production by a new deep-sea marine bacterium Shewanella electrodiphila MAR441T

PubMed Central

Burgess, J. Grant

2017-01-01

Omega-3 fatty acids are products of secondary metabolism, essential for growth and important for human health. Although there are numerous reports of bacterial production of omega-3 fatty acids, less information is available on the biotechnological production of these compounds from bacteria. The production of eicosapentaenoic acid (EPA, 20:5ω3) by a new species of marine bacteria Shewanella electrodiphila MAR441T was investigated under different fermentation conditions. This strain produced a high percentage (up to 26%) of total fatty acids and high yields (mg / g of biomass) of EPA at or below the optimal growth temperature. At higher growth temperatures these values decreased greatly. The amount of EPA produced was affected by the carbon source, which also influenced fatty acid composition. This strain required Na+ for growth and EPA synthesis and cells harvested at late exponential or early stationary phase had a higher EPA content. Both the highest amounts (20 mg g-1) and highest percent EPA content (18%) occurred with growth on L-proline and (NH4)2SO4. The addition of cerulenin further enhanced EPA production to 30 mg g-1. Chemical mutagenesis using NTG allowed the isolation of mutants with improved levels of EPA content (from 9.7 to 15.8 mg g-1) when grown at 15°C. Thus, the yields of EPA could be substantially enhanced without the need for recombinant DNA technology, often a commercial requirement for food supplement manufacture. PMID:29176835

AN OVERVIEW OF THE NATIONAL HUMAN EXPOSURE ASSESSMENT SURVEY (NHEXAS) PHASE I STUDIES

EPA Science Inventory

The National Human Exposure Assessment Survey (NHEXAS) Phase I studies were sponsored by EPA's Office of Research and Development (ORD) to address critical information needs for assessing human exposures to multiple chemicals from multiple pathways and media. These studies were...

Order Responding to Feb. 19, 2002 Petition Requesting that EPA Object to Title V Permit for Georgia-Pacific

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

EPA Review of Proposed Title V Operating Permit for TriGen-Colorado Energy Corporation

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Region 9 Guidance on EPA's 45-Day Review Period forTitle V Permits

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Petition to the EPA Administrator to Object to the Puerto Rico Electric Power Authority Central Cambalache Title V Operating Permit

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Order Responding to Three Petitions Requesting the EPA Object to Operating Permits for Consolidated Environmental Management, Inc. - Nucor Steel Louisiana

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Response to Petition Seeking the EPA to Protect Wisconsin Families from Air Pollution by Issuing a Notice of Deficiency

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Identification of Provisions of EPA's Part 70 Operating Permits Regulation Applicable to Tribal Operating Permits Program

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Clarification of EPA's Position on the Use of Emergency Backup Generators During Power Shortage

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Procedures for EPA to Address Deficient New Source Permits Under the Clean Air Act

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at www2.epa.gov/title-v-operating-permits/title-v-operating-permit-policy-and-guidance-document-index. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Petition to the EPA Administrator to Object to the Puerto Rico Electric Power Authority Central San Juan Title V Operating Permit

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Order Responding to Request for EPA to Object to the Operating Permit for Fort James Camas Mill in Camas, WA

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Petition for EPA to Object to Title V Permit Issued to Consolidated Edison for its 74th Street Plant

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

Review of two-phase flow liquid metal MHD and turbine energy conversion concepts for space applications

NASA Technical Reports Server (NTRS)

Fabris, Gracio

1992-01-01

Two-phase energy conversion systems could be liquid metal magnetohydrodynamic (LMMHD) with no moving parts or two-phase turbines. Both of them are inherently simple and reliable devices which can operate in a wide range of temperatures. Their thermal efficiency is significantly higher than for conventional cycles due to reheat of vapor by liquid phase during the energy converting expansion. Often they can be more easily coupled to heat sources. These features make two-phase systems particularly promising for space application. Insufficient research has been done in the past. So far achieved LMMHD generator and two-phase turbine efficiencies are in the 40 to 45 percent range. However if certain fluid dynamic and design problems are resolved these efficiencies could be brought into the range of 70 percent. This would make two-phase systems extremely competitive as compared to present or other proposed conversion system for space. Accordingly, well directed research effort on potential space applications of two-phase conversion systems would be a wise investment.

Development of Sensors for Ceramic Components in Advanced Propulsion Systems. Phase 2; Temperature Sensor Systems Evaluation

NASA Technical Reports Server (NTRS)

Atkinson, W. H.; Cyr, M. A.; Strange, R. R.

1994-01-01

The 'development of sensors for ceramic components in advanced propulsion systems' program is divided into two phases. The objectives of Phase 1 were to analyze, evaluate and recommend sensor concepts for the measurement of surface temperature, strain and heat flux on ceramic components for advanced propulsion systems. The results of this effort were previously published in NASA CR-182111. As a result of Phase 1, three approaches were recommended for further development: pyrometry, thin-film sensors, and thermographic phosphors. The objective of Phase 2 were to fabricate and conduct laboratory demonstration tests of these systems. Six materials, mutually agreed upon by NASA and Pratt & Whitney, were investigated under this program. This report summarizes the Phase 2 effort and provides conclusions and recommendations for each of the categories evaluated.

Electronic construction collaboration system -- final phase.

DOT National Transportation Integrated Search

2014-09-01

This phase of the research project involved two major efforts: (1) Complete the implementation of AEC-Sync (formerly known as : Attolist) on the Iowa Falls Arch Bridge project and (2) develop a WPMS for projects under $10 million. : For the first maj...

77 FR 4319 - Notification of Two Public Teleconferences of the Science Advisory Board Ecological Processes and...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-27

..., ``Integrating Ecological Assessment and Decision-Making at EPA, 2011 RAF Ecological Assessment Action Plan... the EPA Risk Assessment Forum (RAF) document, ``Integrating Ecological Assessment and Decision-Making... Ecological Risk Assessment in Environmental Decision-Making'' (EPA-SAB-08-002), the EPA Risk Assessment Forum...

Analysis and Modeling of a Two-Phase Jet Pump of a Flow Boiling Test Facility for Aerospace Applications

NASA Technical Reports Server (NTRS)

Sherif, S. A.; Steadham, Justin M.

1996-01-01

Jet pumps are devices capable of pumping fluids to a higher pressure employing a nozzle/diffuser/mixing chamber combination. A primary fluid is usually allowed to pass through a converging-diverging nozzle where it can accelerate to supersonic speeds at the nozzle exit. The relatively high kinetic energy that the primary fluid possesses at the nozzle exit is accompanied by a low pressure region in order to satisfy Bernoulli's equation. The low pressure region downstream of the nozzle exit permits a secondary fluid to be entrained into and mixed with the primary fluid in a mixing chamber located downstream of the nozzle. Several combinations may exist in terms of the nature of the primary and secondary fluids in so far as whether they are single or two-phase fluids. Depending on this, the jet pump may be classified as gas/gas, gas/liquid, liquid/liquid, two-phase/liquid, or similar combinations. The mixing chamber serves to create a homogeneous single-phase or two-phase mixture which enters a diffuser where the high kinetic energy of the fluid is converted into pressure energy. If the fluid mixture entering the diffuser is in the supersonic flow regime, a normal shock wave usually develops inside the diffuser. If the fluid mixture is one that can easily change phase, a condensation shock would normally develop. Because of the overall rise in pressure in the diffuser as well as the additional rise in pressure across the shock layer, condensation becomes more likely. Associated with the pressure rise across the shock is a velocity reduction from the supersonic to the subsonic range. If the two-phase flow entering the diffuser is predominantly gaseous with liquid droplets suspended in it, it will transform into a predominantly liquid flow containing gaseous bubbles (bubbly flow) somewhere in the diffuser. While past researchers have been able to model the two-phase flow jet pump using the one-dimensional assumption with no shock waves and no phase change, there is no research known to the authors apart from that of Anand (1992) which accounted for condensation shocks. One of the objectives of this research effort is to develop a comprehensive model in which the effects of phase slip and inter-phase heat transfer as well as the wall friction and shock waves are accounted for. While this modeling effort is predominantly analytical in nature and is primarily intended to provide a parametric understanding of the jet pump performance under different operating scenarios, another parallel effort employing a commercial CFD code is also implemented. The latter effort is primarily intended to model an axisymmetric counterpart of the problem in question. The viability of using the CFD code to model a two-phase flow jet pump will be assessed by attempting to recreate some of the existing performance data of similar jet pumps. The code will eventually be used to generate the jet pump performance characteristics of several scenarios involving jet pump geometries as well as flow regimes in order to be able to determine an optimum design which would be suitable for a two-phase flow boiling test facility at NASA-Marshall. Because of the extensive nature of the analytical model developed, the following section will only provide very brief highlights of it, while leaving the details to a more complete report submitted to the NASA colleague. This report will also contain some of the simulation results obtained using the CFD code.

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