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Sample records for paso na bacia

  1. 88. Paso Del Norte Hotel, 115117 South El Paso St., ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    88. Paso Del Norte Hotel, 115-117 South El Paso St., south facade, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  2. 91. Paso Del Norte Hotel, 115117 South El Paso St., ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    91. Paso Del Norte Hotel, 115-117 South El Paso St., east facade, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  3. PASO DEL NORTE HOTEL, 115117 S. EL PASO ST., SOUTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    PASO DEL NORTE HOTEL, 115-117 S. EL PASO ST., SOUTH AND EAST FACADES, WEST SIDE OF STREET - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  4. 92. Paso Del Norte Hotel, 115117 South El Paso St., ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    92. Paso Del Norte Hotel, 115-117 South El Paso St., interior, lobby rotunda - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  5. PASO DEL NORTE HOTEL, 115117 S. EL PASO ST., EAST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    PASO DEL NORTE HOTEL, 115-117 S. EL PASO ST., EAST FACADE, WEST SIDE OF STREET - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  6. 7. South El Paso St., South El Paso St., 101103 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. South El Paso St., South El Paso St., 101-103 (Grand Hotel), east (front) and north facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  7. 87. Paso Del Norte Hotel, 115117 South El Paso St., ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    87. Paso Del Norte Hotel, 115-117 South El Paso St., south and east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  8. 89. Paso Del Norte Hotel, 115117 South El Paso St., ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    89. Paso Del Norte Hotel, 115-117 South El Paso St., detail view of roof, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  9. 90. Paso Del Norte Hotel, 115117 South El Paso St.,east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    90. Paso Del Norte Hotel, 115-117 South El Paso St.,east facade, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  10. 6. South El Paso St., street view from 615 South ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. South El Paso St., street view from 615 South El Paso Street showing west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  11. 66. South El Paso St., 800 (commercial), west and north ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    66. South El Paso St., 800 (commercial), west and north facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  12. 5. South El Paso St., street vew, west side of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. South El Paso St., street vew, west side of street, north of Overland St. - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  13. 13. South El Paso St., 208210 (commercial), west facades, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. South El Paso St., 208-210 (commercial), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  14. 33. South El Paso St., 507509 (theater), east elevation, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    33. South El Paso St., 507-509 (theater), east elevation, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  15. 18. South El Paso St., 309317 (commercial), east facades, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. South El Paso St., 309-317 (commercial), east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  16. 51. South El Paso St., 701707 (commercial), east facades, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    51. South El Paso St., 701-707 (commercial), east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  17. 71. South El Paso St., 911 (commercial), east facade, warehouse ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    71. South El Paso St., 911 (commercial), east facade, warehouse to left in background - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  18. 12. South El Paso St., 213221 (commercial), view looking northwest ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. South El Paso St., 213-221 (commercial), view looking northwest showing east facades - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  19. 46. South El Paso St., 516 (commercial), west elevation, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    46. South El Paso St., 516 (commercial), west elevation, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  20. 70. South El Paso St., 818820 (commercial), west and south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    70. South El Paso St., 818-820 (commercial), west and south facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  1. 17. South El Paso St., 309317 (commercial), east facades, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. South El Paso St., 309-317 (commercial), east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  2. 22. South El Paso St., 300302 (commercial), west and north ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. South El Paso St., 300-302 (commercial), west and north facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  3. 36. South El Paso St., 523525 (commercial), east elevation, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    36. South El Paso St., 523-525 (commercial), east elevation, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  4. 24. South El Paso St., 310318 (commerical), west facades, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. South El Paso St., 310-318 (commerical), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  5. 14. South El Paso St., 216222 (commercial), west facades, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. South El Paso St., 216-222 (commercial), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  6. 50. South El Paso St., 618620 (commercial), west and south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    50. South El Paso St., 618-620 (commercial), west and south facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  7. 25. South El Paso St., 320324 (commercial), west facades, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    25. South El Paso St., 320-324 (commercial), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  8. 30. South El Paso St., 412416 (commercial), west facades, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    30. South El Paso St., 412-416 (commercial), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  9. 9. South El Paso St., 203205 (Hotel Fisher), east and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. South El Paso St., 203-205 (Hotel Fisher), east and north facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  10. 57. South El Paso St., 704708 (commercial), west facades, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    57. South El Paso St., 704-708 (commercial), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  11. 54. South El Paso St., 713 (commercial), east elevation, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    54. South El Paso St., 713 (commercial), east elevation, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  12. 52. South El Paso St., 709711 (commercial), east facades, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    52. South El Paso St., 709-711 (commercial), east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  13. 16. South El Paso St., 309317 (commercial), east elevations, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. South El Paso St., 309-317 (commercial), east elevations, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  14. 15. South El Paso St., 305307 (commercial), east facades, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. South El Paso St., 305-307 (commercial), east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  15. 10. South El Paso St., 207211 (commercial), east elevations, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. South El Paso St., 207-211 (commercial), east elevations, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  16. 35. South El Paso St., 513521 (commercial), east facades, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    35. South El Paso St., 513-521 (commercial), east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  17. 58. South El Paso St., 710714 (commercial), west facades, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    58. South El Paso St., 710-714 (commercial), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  18. 55. South El Paso St., 719 (commercial), south and east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    55. South El Paso St., 719 (commercial), south and east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  19. 64. South El Paso St., 813821 (commercial), east facades, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    64. South El Paso St., 813-821 (commercial), east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  20. 43. South El Paso St., 623 (commercial), east and south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    43. South El Paso St., 623 (commercial), east and south facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  1. 8. VIEW OF EL PASO AND SOUTHWESTERN RAILROAD BRIDGE, PIER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. VIEW OF EL PASO AND SOUTHWESTERN RAILROAD BRIDGE, PIER BETWEEN EAST APPROACH AND RAILROAD, LOOKING NORTH. - El Paso & Southwestern Railroad Rio Grande Bridge, Spanning Rio Grande at Southwestern Railroad, El Paso, El Paso County, TX

  2. 7. VIEW OF EL PASO AND SOUTHWESTERN RAILROAD BRIDGE, PIER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. VIEW OF EL PASO AND SOUTHWESTERN RAILROAD BRIDGE, PIER BETWEEN HIGHWAY AND RAILROAD, LOOKING NORTH. - El Paso & Southwestern Railroad Rio Grande Bridge, Spanning Rio Grande at Southwestern Railroad, El Paso, El Paso County, TX

  3. 4. GENERAL VIEW OF EL PASO AND SOUTHWESTERN RAILROAD BRIDGE, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. GENERAL VIEW OF EL PASO AND SOUTHWESTERN RAILROAD BRIDGE, RAILROAD SPAN, LOOKING NORTH. - El Paso & Southwestern Railroad Rio Grande Bridge, Spanning Rio Grande at Southwestern Railroad, El Paso, El Paso County, TX

  4. 1. South El Paso St., Street view, southwest from roof ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. South El Paso St., Street view, southwest from roof of 210 South El Paso Street, West Overland Street is first cross street on right - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  5. 27 CFR 9.84 - Paso Robles.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Paso Robles. 9.84 Section... THE TREASURY LIQUORS AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.84 Paso Robles. (a) Name. The name of the viticultural area described in this section is “Paso Robles”....

  6. 27 CFR 9.84 - Paso Robles.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2014-04-01 2014-04-01 false Paso Robles. 9.84 Section... THE TREASURY ALCOHOL AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.84 Paso Robles. (a) Name. The name of the viticultural area described in this section is “Paso Robles”....

  7. 27 CFR 9.84 - Paso Robles.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2011-04-01 2011-04-01 false Paso Robles. 9.84 Section... THE TREASURY LIQUORS AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.84 Paso Robles. (a) Name. The name of the viticultural area described in this section is “Paso Robles”....

  8. 27 CFR 9.84 - Paso Robles.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2012-04-01 2012-04-01 false Paso Robles. 9.84 Section... THE TREASURY LIQUORS AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.84 Paso Robles. (a) Name. The name of the viticultural area described in this section is “Paso Robles”....

  9. 27 CFR 9.84 - Paso Robles.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2013-04-01 2013-04-01 false Paso Robles. 9.84 Section... THE TREASURY ALCOHOL AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.84 Paso Robles. (a) Name. The name of the viticultural area described in this section is “Paso Robles”....

  10. EL PASO CHILDREN'S HEALTH STUDY

    EPA Science Inventory

    The El Paso Childrens Health Study consisted of two waves of exposure monitoring, respiratory health questionnaires, and lung function examinations. The exposure assessment began with a pilot study using passive samplers for nitrogen dioxide in February, 1999 and was followed b...

  11. PASO DEL NORTE ENVIRONMENTAL MONITOR

    EPA Science Inventory

    This project is developing an Internet web site and associated community linkages to provide relevant-time air quality and local traffic and transit information, in English and Spanish, to the international communities of El Paso, Texas, Sunland Park, New Mexico and Ciud...

  12. 59. South El Paso St., 716718 (commercial), west facades and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    59. South El Paso St., 716-718 (commercial), west facades and south facade of 718, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  13. 32. South El Paso St., 501509 (commercial), east facades, and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    32. South El Paso St., 501-509 (commercial), east facades, and north facade of 501, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  14. 19. South El Paso St., 405411 (commercial), east facades, south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    19. South El Paso St., 405-411 (commercial), east facades, south facade of 400 visible, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  15. 44. South El Paso St., 500506 (commercial), 500502 (north and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    44. South El Paso St., 500-506 (commercial), 500-502 (north and west facades), 504-506 (west facades),east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  16. 8. South El Paso St., 106108 (commercial), west facades of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. South El Paso St., 106-108 (commercial), west facades of building east side of street, 101 East San Antonio Ave can be seen to right - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  17. 42. South El Paso St., 615619 (commercial/residential), west side of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    42. South El Paso St., 615-619 (commercial/residential), west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  18. 49. South El Paso St., 612614 (commercial),west facades, east side ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    49. South El Paso St., 612-614 (commercial),west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  19. 23. South El Paso St., 304308 1/2 (commercial),west elevations, east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. South El Paso St., 304-308 1/2 (commercial),west elevations, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  20. 47. South El Paso St., 526600 1/2 (commercial), west facades, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    47. South El Paso St., 526-600 1/2 (commercial), west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  1. 26. South El Paso St., 400406 (commercial),west elevations, east side ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    26. South El Paso St., 400-406 (commercial),west elevations, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  2. 27. South El Paso St., 400406 (commercial),west facades, east side ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    27. South El Paso St., 400-406 (commercial),west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  3. 40. South El Paso St., 605611 (commercial/residential), east facade, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    40. South El Paso St., 605-611 (commercial/residential), east facade, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  4. 20. South El Paso St., 423425 (commercial/residential), east elevation, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. South El Paso St., 423-425 (commercial/residential), east elevation, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  5. 21. South El Paso St., 423425 (commercial/residential), east and south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    21. South El Paso St., 423-425 (commercial/residential), east and south facades of building - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  6. 69. South El Paso St., 816816 1/2 (commercial/ residential), west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    69. South El Paso St., 816-816 1/2 (commercial/ residential), west elevation, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  7. S. EL PASO ST., 423425 (COMMERCIAL/RESIDENTIAL), EAST ELEVATION, WEST SIDE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    S. EL PASO ST., 423-425 (COMMERCIAL/RESIDENTIAL), EAST ELEVATION, WEST SIDE OF STREET - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  8. 45. South El Paso St., 508514 (commercial),west facades, east side ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    45. South El Paso St., 508-514 (commercial),west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  9. 38. South El Paso St., 601 (commercial/residential), east and north ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    38. South El Paso St., 601 (commercial/residential), east and north facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  10. 48. South El Paso St., 602610 (commercial),west facades, east side ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    48. South El Paso St., 602-610 (commercial),west facades, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  11. S. EL PASO ST., 8018031/2 (HOTEL ORIZABA), EAST ELEVATION, WEST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    S. EL PASO ST., 801-8031/2 (HOTEL ORIZABA), EAST ELEVATION, WEST SIDE OF STREET - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  12. 65. South El Paso St., 823825 (residential/warehouse),south and east facades ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    65. South El Paso St., 823-825 (residential/warehouse),south and east facades - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  13. S. EL PASO ST., 8018031/2 (HOTEL ORIZABA), NORTH AND EAST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    S. EL PASO ST., 801-8031/2 (HOTEL ORIZABA), NORTH AND EAST FACADES, WEST SIDE OF STREET - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  14. 60. South El Paso St., 801803 1/2 (Hotel Orizaba), east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    60. South El Paso St., 801-803 1/2 (Hotel Orizaba), east elevation, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  15. 34. South El Paso St., 511 (commercial/residential), east facade, west ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    34. South El Paso St., 511 (commercial/residential), east facade, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  16. El Paso automates main line compressor stations

    SciTech Connect

    Kind, R.H. )

    1989-12-01

    This paper reports how an El Paso natural gas company has automated 27 compressor stations on its main line gas-transmission system, ahead of its 5-year schedule begun in 1984. The project involved the total automation (unmanned operation) of one reciprocating engine-driven compressor station and 21 turbine-driven compressor facilities; the semi-automation (computer-assisted operation) of six reciprocating engine-driven compressor stations; and the addition of a central control facility located in El Paso.

  17. Effects of the Paso Robles Geothermal Reservoir on water quality and availability in the Paso Robles Groundwater Basin, California

    NASA Astrophysics Data System (ADS)

    Rytuba, J. J.; Langenheim, V. E.; Goldstein, D.

    2012-12-01

    . Geothermal waters and groundwater mix in the PRGB, resulting in distinct changes in chemistry and quality of water derived from wells that extend into the lower part of the PRF. Geothermal waters and waters from Paso Robles city wells plot on a two-end member mixing line defined by light stable isotopes (δ2H and δ18O) and conservative elements (B, Cl, Na, Li). Most hot spring waters and well waters are a mixture of the two end members, indicating that city waters include a component of geothermal water. In water wells that contain less than 15% geothermal water, water quality is acceptable. Water wells that contain from 15% to 50% geothermal water have high Fe and Mn and require treatment. Water wells that have >50% geothermal water have high H2S and are unpotable. On the east side of the basin, water wells east of the San Juan and Red Hills faults have high levels of Cl, B, and Na, similar to wells in the Paso Robles geothermal system, indicating that a significant component of the geothermal fluid has mixed with these waters. This suggests that the geothermal reservoir extends across the PRGB, and could be used to substantially increase municipal water availability, as long as water production was managed to limit the amount of mixing to <50%.

  18. 76 FR 19276 - Television Broadcasting Services; El Paso, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-07

    ... KTSM-TV, channel 9, El Paso, Texas, requesting the substitution of channel 16 for channel 9 at El Paso. Comcorp states that this channel substitution is necessary because KTSM-TV has experienced...

  19. 61. South El Paso St., 801803 1/2 (Hotel Orizaba), north ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    61. South El Paso St., 801-803 1/2 (Hotel Orizaba), north and east facades, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  20. 31. South El Paso St., 416426 (commercial), west facades,and south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    31. South El Paso St., 416-426 (commercial), west facades,and south facade of 426, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  1. 62. South El Paso St., 801803 1/2 (Hotel Orizaba), detail ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    62. South El Paso St., 801-803 1/2 (Hotel Orizaba), detail view of second floor and roof, east facade - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  2. 39. South El Paso St., 603603 1/2 (commercial/residential), east elevation, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    39. South El Paso St., 603-603 1/2 (commercial/residential), east elevation, west side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  3. 56. South El Paso St., 700702 (commercial/residential), west facade and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    56. South El Paso St., 700-702 (commercial/residential), west facade and north facade of 700, east side of street - South El Paso Street Historic District, South El Paso, South Oregon & South Santa Fe Streets, El Paso, El Paso County, TX

  4. 76 FR 48833 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-09

    ... Energy Regulatory Commission El Paso Natural Gas Company; Notice of Application Take notice that on July 20, 2011, El Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs, Colorado 80944...) of the Natural Gas Act, to abandon, in place, El Paso's El Paso-Douglas Line (Line No. 1004) in...

  5. El Paso's College Readiness Initiative: Cooperation at Work

    ERIC Educational Resources Information Center

    Stein, Kathy

    2008-01-01

    In El Paso, Texas, the public institutions of higher education have joined with area school districts to create the El Paso College Readiness Initiative. Through a great deal of coordination and cooperation among the participating institutions, high school faculty, students, and parents are introduced to the placement test used by the city's…

  6. 76 FR 44280 - Television Broadcasting Services; El Paso, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-25

    ...''), licensee of KVIA-TV, channel 7, El Paso, Texas, requesting the substitution of channel 17 for channel 7 at El Paso. KVIA-TV has experienced extensive signal coverage problems on channel 7 following the June 12, 2009 digital transition deadline, after which the Video Division granted KVIA-TV...

  7. 76 FR 76707 - Brian Hamilton; El Paso Natural Gas and El Paso Western Pipelines; Notice of Complaint

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-08

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Brian Hamilton; El Paso Natural Gas and El Paso Western Pipelines; Notice of... Improvement Act of 2002, and the Pipeline Hazardous Material Safety Administration, Brian...

  8. 76 FR 77994 - Brian Hamilton v. El Paso Natural Gas, El Paso Western Pipelines; Notice Announcing Docket Number...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-15

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Brian Hamilton v. El Paso Natural Gas, El Paso Western Pipelines; Notice Announcing Docket Number Change On December 2, 2011, the Commission issued a notice in docket number...

  9. 76 FR 66708 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-27

    ... October 7, 2011, El Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs, Colorado 80904... Department, El Paso Natural Gas Company, P.O. Box 1087, Colorado Springs, Colorado 80904, by telephone at... Craig V. Richardson, Vice President & General Counsel, El Paso Natural Gas Company, P.O. Box...

  10. Super Guppy Swallows T-38s; Heads for El Paso

    NASA Video Gallery

    Two NASA T-38 aircraft were swallowed whole by NASA's Super Guppy recently on Dryden Flight Research Center's back ramp. The Guppy then airlifted the two retired T-38s to El Paso, Texas, where they...

  11. 76 FR 5120 - Television Broadcasting Services; El Paso, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-28

    ... From the Federal Register Online via the Government Publishing Office ] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; El Paso, TX AGENCY: Federal Communications... 73 Television, Television broadcasting. For the reasons discussed in the preamble, the...

  12. 76 FR 28946 - Television Broadcasting Services; El Paso, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-19

    ... NPG of Texas, LP (``NPG''), licensee of station KVIA-TV, El Paso, Texas, requesting the substitution... the public interest by significantly improving the public's digital signal reception from...

  13. 76 FR 61135 - Environmental Impact Statement: El Paso County, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-03

    ...FHWA is issuing this notice to advise the public that the NOI to prepare an environmental impact statement (EIS) for proposed improvements to Loop 375 Border Highway West, in El Paso County, Texas, is being...

  14. Landsat's Decades-Long Look at El Paso, Texas

    NASA Video Gallery

    Landsat satellites have captured hundreds of images of the regionsurrounding El Paso, Texas since the program started in 1972. On May30, 2013, Landsat 8 began adding to the program’s extensive ...

  15. Clean cities: Award winning coalition -- Paso del Norte

    SciTech Connect

    O'Connor, K.

    1999-10-25

    Designated the 41st Clean Cities coalition in November 1995, the Paso del Norte Clean Cities Coalition (PDNCCC) is the first in the country to gain international participation. Spanning the US-Mexico border; the coalition includes stakeholders from El Paso, Texas; Ciudad Juarez, Mexico; and Las Cruces, New Mexico. PDNCCC developed a comprehensive plan to jump-start its program place, alternative fuel vehicles (AFVs) on the road, and eliminate barriers inhibiting alternative fuel market growth. PDNCC raised more than $2.3 million for alternative fuel activities and clean air initiatives in less than 26 months. In 1998, the US Department of Energy (DOE) recognized that PDNCCC accomplishment with its Rainmaker Award for leveraging the most funds from outside sources. PDNCCC is proud of its efforts to drive the alternative fuels and AFV market in the El Paso/Juarez region.

  16. 76 FR 18756 - El Paso Natural Gas Company; Notice of Request Under Blanket Authorization

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-05

    ... Take notice that on March 22, 2011, El Paso Natural Gas Company (El Paso), Post Office Box 1087... application should be directed to Susan C. Stires, Post Box Office 1087, Colorado Springs, CO 80944,...

  17. 77 FR 20617 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-05

    ... 23, 2012, El Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs, Colorado 80904... Nevada Avenue, P.O. Box 1087, Colorado Springs, Colorado 80904, by telephone at (719) 667-7514 or...

  18. 75 FR 62515 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-12

    ... notice that on September 28, 2010, El Paso Natural Gas Company (EPNG), P.O. Box 1087, Colorado Springs..., Director, Regulatory Affairs, El Paso Natural Gas Company, P.O. Box 1087, Colorado Springs, Colorado...

  19. 76 FR 41235 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-13

    ... 28, 2011, El Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs, Colorado 80944... Interstate Gas Company, P.O. Box 1087, Colorado Springs, CO 80944, telephone no. (719) 667-7514, facsimile...

  20. 77 FR 14776 - El Paso Natural Gas Company; Notice of Amendment to Presidential Permit

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-13

    ... notice that on February 20, 2012, El Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs... Nevada Avenue, P.O. Box 1087, Colorado Springs, Colorado 80944, or call at 719-667-7514, or email...

  1. 76 FR 66711 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-27

    ... October 11, 2011, El Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs, Colorado 80904..., Director, Regulatory Affairs Department, El Paso Natural Gas Company, P.O. Box 1087, Colorado Springs... Company, P.O. Box 1087, Colorado Springs, Colorado 80904, by telephone at (719) 520-4227, by facsimile...

  2. 76 FR 28016 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-13

    ... Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs, CO 80944, filed with the Federal... Gas Company, P.O. Box 1087, Colorado Springs, CO 80944, at (719) 667-7514 (phone), (719) 667-7534 (fax... Paso Natural ] Gas Company, P.O. Box 1087, Colorado Springs, Colorado 80944, at (719) 520-4534...

  3. 75 FR 42727 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-22

    ... notice that on July 13, 2010, El Paso Natural Gas Company (El Paso), P.O. Box 1087, Colorado Springs... Gas Company, P.O. Box 1087, Colorado Springs, Colorado 80944, or by calling (719) 667-7514 (telephone... and General Counsel, El Paso Natural Gas Company, P.O. Box 1087, Colorado Springs, Colorado 80944,...

  4. PRELIMINARY RESEARCH FINDINGS OF THE EL PASO CHILDREN'S HEALTH STUDY

    EPA Science Inventory

    The El-Paso-Ciudad Juarez area is one of the largest metropolitan areas on the U.S.-Mexico border. Sources of air pollutants inlcude the more than 18 million vehicles, which annually cross between the two cities, heavily traveled roads and interstate freeways, and local indust...

  5. The Chicanos of El Paso: A Case of Changing Colonization.

    ERIC Educational Resources Information Center

    Martinez, Oscar J.

    Using historical statistics and key indicators, data were synthesized to identify longitudinal trends and patterns in the social, economic, and political status of El Paso's Chicanos. Data related to group achievement were analyzed. A framework adapted to local conditions based on the internal colonialism model was used for the periodization of El…

  6. Texas K-16 Reform: The El Paso Story.

    ERIC Educational Resources Information Center

    Bristol, Jack

    1999-01-01

    The University of Texas at El Paso has provided leadership and support for several collaborative K-16 reform activities. A closed-loop, K-12, preservice teacher preparation system supported by generous extramural funding has provided the university, community college, and local schools with opportunities for conversation, shared vision, and…

  7. Spanish as an Ethnic Marker in El Paso, Texas.

    ERIC Educational Resources Information Center

    Weyers, Joseph R.

    1999-01-01

    Bilinguals in the Southwestern United States use Spanish as an ethnic marker to accept other speakers as members of the in-group, or English to exclude them, in situations in which they have a choice of code. Shows that the choice of code used in El Paso, Texas is based on the perceived ethnicity of the other bilingual speaker. (Author/VWL)

  8. Community and Contemporary Chicano Art: Four El Paso Artists.

    ERIC Educational Resources Information Center

    Eklund, Lori; Medrano, Jerry

    2000-01-01

    Presents an instructional resource for middle and high school students that focuses on artworks by the El Paso (Texas) artists Luis Jimenez, Carlos Callejo, Gaspar Enriquez, and Gloria Osuna Perez. Explains that the artwork represents the artists' personal relationship to community. Provides background information and an activity for each artwork.…

  9. El Paso Formation - a Lower Ordovician platform carbonate deposit

    SciTech Connect

    Clemons, R.E.

    1987-05-01

    The eastward-transgressive Lower Ordovician El Paso Formation conformably overlies Bliss Sandstone in southern New Mexico. Locally, lower El Paso was deposited on low hills of plutonic and volcanic rocks. The region subsided gradually throughout Canadian time, receiving the El Paso carbonate rock blanket up to 460 m thick. Lithologic and chronologic correlative rocks were deposited over most of the southwestern US as the first Paleozoic carbonate platform sequence. The El Paso Formation contains four members, listed here in ascending order: Hitt Canyon, Jose, McKelligon, and Padre. Gradually decreasing sand content upward through the Hitt Canyon indicates deepening water and/or greater distance to shore. Girvanella(.) oncolites are locally abundant. Stromatolite mounds near the top of the Hitt Canyon, combined with an influx of sand, ooids, and rounded bioclasts in the Jose Member, recorded a shoaling phase. The overlying McKelligon Member contains little or no sand, and sponge-Calathium mounds are prominent at some locales. Stromatolite mounds are interbedded with sponge-Calathium mounds in a few sections. Lower Padre Member beds are typically silty to sandy and locally contain thinly-laminated zones. The Padre contains more restricted fauna that includes traces of ostracods. Pervasive bioturbation of El Paso beds and fauna consisting of echinoderms, sponges, gastropods, trilobites, Nuia, Calathium, cephalopods, and algae plus minor brachiopods and Pulchrilamina indicate predominating shallow-subtidal environments. Low-energy platform environments, in which a large volume of micritic muds accumulated, were disturbed thousands of times by storms producing abundant thin, poorly washed biosparite, intrasparite, and intrasparrudite lenses.

  10. Why El Paso natural upgraded its digital microwave system

    SciTech Connect

    Rico, J.A. )

    1991-07-01

    This paper reports on El Paso Natural Gas Co. (EPNG), a 22,000-mi pipe line network serving the Southwest and California, which operates an extensive private analog microwave network between the El Paso headquarters, field offices and compressor stations in Texas, New Mexico and Arizona, and delivery points along its routes in several states. A good portion of the analog microwave network has been in service for over 20 years. When the system was installed, data traffic consisted mainly of slow speed telemetry; stations were manned and there were no field computers. In recent years, system reliability requirements have increased as a result of the dramatic changes in the type of transmitted information. With automation of pipe line and compressor station operations, and more SCADA networks being use for pipe line monitoring, data takes up more of the system's channel capacity. Data communications cannot withstand propagation abnormalities in the microwave system as can voice communications.

  11. Modeling Visibility in the EL Paso del Norte Region

    NASA Astrophysics Data System (ADS)

    Fitzgerald, R. M.; Medina, R.; DuBois, D. W.; Novlan, D.

    2013-12-01

    Poor visibility is a subject of growing public concern throughout the U.S, and an active area of research. Its societal impacts in air quality, aviation transport and traffic are significant. Aerosols play a fundamental role in the attenuation of solar radiation, and also affect visibility. The scattering and extinction coefficients of aerosol particles in the Paso del Norte Region have been calculated using the T- matrix model in conjunction with a laser particle counter. Inter-comparison of the model's results of the scattering and absorption coefficients against the corresponding data from a Photoacustic Extinctiometer instrument (which measures in-situ absorption and scattering coefficients of aerosol particles) shows excellent agreement. In addition, the volume-weighted method is used to determine the composite index of refraction which is representative of the aerosols for the Paso del Norte Airshed to obtain information of the type of aerosol particles present in the Airshed. The Single Scattering Albedo has also been retrieved using our methodology to obtain further insight into the type of aerosols present on a given day. Finally, the Koschmieder equation has been used to calculate the visual range or visibility, and was correlated with the PM2.5 and PM10 particle concentration present in the Airshed. Our methodology will allow a better understanding of the size and type of aerosol particles that are most detrimental to the visibility for the Paso del Norte Region.

  12. Modeling visibility in the Paso del Norte (PDN) Region

    NASA Astrophysics Data System (ADS)

    Medina Calderon, Richard

    Poor visibility is a subject of growing public concern throughout the U.S, and an active area of research. Its societal impacts on air quality, aviation transport and traffic are significant. Aerosols play a fundamental role in the attenuation of solar radiation, and also affect visibility. The scattering and extinction coefficients of aerosol particles in the Paso del Norte Region have been calculated using the T- matrix model in conjunction with a laser particle counter. Inter-comparison of the model's results of the scattering and absorption coefficients against the corresponding data from a Photoacustic extinctiometer instrument (which measures in-situ absorption and scattering coefficients of aerosol particles) shows excellent agreement. In addition, the volume-weighted method is used to determine the composite index of refraction which is representative of the aerosols for the Paso del Norte Region to obtain information of the type of aerosol particles present in the Region. The Single Scattering Albedo has also been retrieved using this methodology to obtain further insight into the type of aerosols present on a given day. Finally, the Koschmieder equation has been used to calculate the visual range or visibility, and was correlated with the PM2.5 and PM10 particle concentration present in the Region. Our methodology will allow a better understanding of the size and type of aerosol particles that are most detrimental to the visibility for the Paso Del Norte Region.

  13. Paso del Norte ozone study VOC measurements, 1996

    SciTech Connect

    Seila, R.L.; Main, H.; Arriaga, J.L.; Martinez, G.V.; Ramadan, A.B.

    1999-11-01

    The results of VOC determinations of ambient air samples collected at surface air quality monitoring sites and near sources of interest on the US and Mexican side of the border during six weeks of the 1996 Paso del Norte Ozone Study are reported. Carbonyl samples were collected on DNPH impregnated cartridges at three surface sites and analyzed by HPLC to quantify 13, C-1 to C-8 species. Whole air samples were collected in electro-polished stainless steel canisters which were returned to laboratory for determination of C-2 to C-10+ hydrocarbons by cryogenic preconcentration capillary gas chromatography with flame ionization detection (gc-fid). Several sources were sampled: rush hour traffic, propane-powered bus exhaust, automobile paint shop emissions, propane fuel, petroleum refinery, and industrial manufacturing site. Spatial and temporal characteristics of VOC species concentrations and compositions are presented. Overall surface TNMOC values ranged from 0.1 to 3.4 ppmC with the highest concentrations recorded in the morning at three vehicle-dominated sites, two in Cuidad Juarez and one in downtown El Paso. Toluene in El Paso samples and propane, which is used as a cooking and transportation fuel in Cuidad Juarez, were the most abundant hydrocarbons.

  14. Paso del Norte ozone study VOC measurements, 1996

    SciTech Connect

    Seila, R.L.; Main, H.; Arriaga, J.L.; Martinez, G.V.; Ramadan, A.B.

    1999-01-01

    The results of VOC determinations of ambient air samples collected at surface air quality monitoring sites and near sources of interest on the US and Mexican side of the border during six weeks of the 1996 Paso del Norte Ozone Study are reported. Carbonyl samples were collected on DNPH impregnated cartridges at three surface sites and analyzed by HPLC to quantify 13, C-1 to C-8 species. Whole air samples were collected in electro-polished stainless steel canisters which were returned to laboratory for determination of C-2 to C-10+ hydrocarbons by cryogenic preconcentration capillary gas chromatography with flame ionization detection (gc-fid). Several sources were sampled: rush hour traffic, propane-powered bus exhaust, automobile paint shop emissions, propane fuel, petroleum refinery, and industrial manufacturing site. Spatial and temporal characteristics of VOC species concentrations and compositions are presented. Overall surface TNMOC values ranged from 0.1 to 3.4 ppmC with the highest concentrations recorded in the morning at three vehicle-dominated sites, two in Cuidad Juarez and one in downtown El Paso. Toluene in El Paso samples and propane, which is used as a cooking and transportation fuel in Cuidad Juarez, were the most abundant hydrocarbons.

  15. The composition of wet deposition in El Paso, Texas

    NASA Astrophysics Data System (ADS)

    Emmert, Sonny

    The composition of precipitation reflects the transport of particles from varying air mass source regions as well as input from local environmental and anthropogenic activities. Air research in El Paso, TX, U.S.A/Ciudad Juarez, Chihuahua, Mexico has been traditionally limited to studies of local inputs of air pollution; no transition has been made to studying the scavenging, washout, and transport of pollutants by precipitation. The goal of this research project was to identify transported pollutants in precipitation, and determine if there were any health and ecological implications. The research investigated biological, chemical, and geological constituents in precipitation samples collected between September 2004 and October 2005. A variety of analysis techniques were used to determine composition of the precipitation. These techniques included bacterial and fungal plate counts, inductively coupled plasma/mass spectrometry, ion chromatography, transmission electron microscopy, scanning electron microscopy, and electron microprobe analysis. Samples were collected from an urban site in El Paso, Texas at the campus of the University of Texas at El Paso. Wet only samples were the target of the sample collection. Particulate matter <10 microns was correlated with fungal growth while particulate matter < 2.5 microns was correlated with bacterial growth in analyzed samples. Microscopy methods revealed new techniques in particle characterization, evidence of anthropogenic influence, and a wide variety of particle compositions. The ionic chemistry results reflected elevated levels of ions as well as an overall alkalinity of rainwater samples. Elemental analysis of the inorganic fraction suggested elevated enrichment of Phosphorus in the study area and possible ratios for transport identification of southwestern dust storms.

  16. 1996 Paso del Norte ozone study VOC measurements

    SciTech Connect

    Seila, R.L.; Main, H.; Arriaga, J.L.; Martinez, G.; Ramadan, A.B.

    1999-07-01

    Ambient air VOC samples were collected at surface air quality monitoring sites, near sources of interest, and aloft on the US and Mexican side of the border during a six week period of the 1996 Paso del Norte Ozone Study. On nine intensive operations (IOP) days, when high ozone concentrations were forecast, five 2-hr samples were collected at five IOP sites, three on the US side and two on the Mexican side. Six special survey sites on the US side and two on the Mexican side were sampled to characterize up-wind, down-wind and other emissions. In Ciudad Juarez, rush hour traffic, propane-powered bus exhaust, automobile paint shop emissions, propane and butane fuels, and an industrial manufacturing site were sampled. Carbonyl samples were collected at three surface sites. Carbonyl and canister grab samples were also collected during aircraft and hot air balloon flights. Most of the hydrocarbon samples were collected in electro-polished stainless steel canisters which were returned to laboratories for determination of C-2 to C-10+ hydrocarbons by cryogenic preconcentration GC-FID. The carbonyl samples were collected on DNPH impregnated C-18 Sep-Pak cartridges and analyzed by HPLC to quantify 13, C-1 to C-8 species. This paper presents the spatial and temporal characteristics of VOC species concentrations and compositions to examine the differences and similarities of the various locations and time periods. Overall surface TNMOC values ranged from 0.1 to 3.4 ppmC with the highest concentrations being recorded in the morning at three vehicle-dominated sites, two in Ciudad Juarez and one in downtown El Paso. Toluene in El Paso samples and propane, which is used as a cooking and transportation fuel in Ciudad Juarez, were the most abundant hydrocarbons. The most abundant carbonyls were acetaldehyde and acetone.

  17. Ground-water resources of the El Paso area, Texas

    USGS Publications Warehouse

    Sayre, Albert Nelson; Livingston, Penn Poore

    1945-01-01

    El Paso, Tex., and Ciudad Juarez, Chihuahua, Mexico, and the industries in -that area draw their water supplies from wells, most of which are from 600 to 800 feet deep. In 1906, the estimated average pumpage there was about 1,000,000 gallons a day, and by 1935 it had increased to 15,400,000 gallons a day. The water-bearing beds, consisting of sand and gravel interbedded wire clay, tie in the deep structural trough known as the Hueco bolson, between the Organ and Franklin Mountains on the west, the Hueco, Finlay, and Malone Mountains on the east, the Tularosa Basin on the north, and the mountain ranges of Mexico on the south. From the gorge above El Paso to that beginning near Fort Quitman, about 90 miles southeast .of El Paso, the Rio Grande has eroded a flat-bottomed, steepwalled valley, 6 to 8 miles wide and 225 to 350 feet deep. No other large drainage channels have been developed on the bolson. The valley is known as the El Paso Valley, and the uneroded upland part of the bolson is called the Mesa. In the lowest parts of the El Paso Valley, the water-table is nearly at the surface. The quality of the underground water in the valley varies greatly both vertically and laterally. To a depth of about 400 to 500 feet it is in general too highly mineralized for municipal use, but between about. 500 and 900 feet good water may be obtained from several beds. In the beds between 500 and 900 feet the water level in wells is in places as. much as 20 feet lower than that in the shallow beds. Beneath the Mesa the water level .varies from about 200 feet beneath the surface, where the ground elevation is least, to about 400 feet. where it is highest. The water beneath the Mesa in general is of satisfactory quality and contains less than 500 parts per million of dissolved solids. Two cones of depression in the water table have been formed by the pumping near El Paso--one m the vicinity of the Mesa well field, the other around the Montana well field in the valley. The water

  18. Locally acquired hepatitis E virus infection, El Paso, Texas.

    PubMed

    Amon, Joseph J; Drobeniuc, Jan; Bower, William A; Magaña, Jorge C; Escobedo, Miguel A; Williams, Ian T; Bell, Beth P; Armstrong, Gregory L

    2006-06-01

    Hepatitis E virus (HEV) is an enterically transmitted RNA virus that causes both epidemic and sporadic cases of acute hepatitis. Despite sero-surveys showing antibody to HEV in up to 36% of the US population, acute hepatitis E has been reported among individuals with no history of international travel only three times in the United States. We report a case of apparently locally-acquired hepatitis E that occurred in El Paso, Texas that was 98% similar to a previously isolated HEV found in swine in the United States. Like the three previous cases, a thorough investigation found no conclusive sources of infection. Active case surveillance found no additional cases. PMID:16628579

  19. ATMOSPHERIC VOLATILE ORGANIC COMPOUND MEASUREMENTS DURING THE 1996 PASO DEL NORTE OZONE STUDY

    EPA Science Inventory

    Ambient air VOC samples were collected at surface air quality monitoring sites, near sources of interest, and aloft on the US (El Paso) and Mexican (Ciudad Juarez) side of the border during a six-week period of the 1996 Paso del Norte Ozone Study. Samples were collected at five...

  20. 78 FR 58049 - Proposed Establishment of the Adelaida District, Creston District, El Pomar District, Paso Robles...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-20

    ..., at 74 FR 3425). Overview of the Paso Robles Viticultural Area The Paso Robles viticultural area... with Monterey County (see T.D. ATF-148, published in the Federal Register on October 4, 1983, at 48 FR....D. ATF-377, published in the Federal Register on June 13, 1996, at 61 FR 29952); and, as noted...

  1. Evaluation of Academic Policy Formulation and Implementation Transmountain Early College High School, El Paso, Texas

    ERIC Educational Resources Information Center

    Heidemann, Virginia Margaret

    2010-01-01

    Transmountain Early College High School (TMECHS) opened in August 2008, created by a partnership between the El Paso Community College (EPCC) and the El Paso Independent School District (EPISD), and supported in its conceptualization, start-up, and first few years operation by grant funding and guidance from the Texas High School Project (THSP)…

  2. 78 FR 15683 - Approval of Subzone Status, Expeditors International of Washington, Inc.; El Paso, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-12

    ... the Federal Register inviting public comment (78 FR 4124, 1/18/2013). The FTZ staff examiner reviewed... Paso, TX On January 7, 2013, the Executive Secretary of the Foreign-Trade Zones (FTZ) Board docketed an application submitted by the City of El Paso, grantee of FTZ 68, requesting subzone status subject to...

  3. 77 FR 3757 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-25

    ... Energy Regulatory Commission El Paso Natural Gas Company; Notice of Application Take notice that on January 5, 2012, El Paso Natural Gas Company (EPNG), Post Office Box 1087, Colorado Springs, Colorado 80944 filed an application in the above referenced docket pursuant to section 7(b) of the Natural...

  4. 75 FR 70225 - El Paso Natural Gas Company; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-17

    ... Energy Regulatory Commission El Paso Natural Gas Company; Notice of Application November 9, 2010. Take notice that on October 29, 2010, El Paso Natural Gas Company (EPNG), P.O. Box 1087, Colorado Springs... Natural Gas Act (NGA) and Rule 207(a)(5) of the Commission's regulations, requesting the...

  5. Ozone studies in the Paso del Norte region

    NASA Astrophysics Data System (ADS)

    Becerra-Davila, Fernando

    The Paso del Norte region forms the largest contiguous bi-national conglomerate on the US-Mexico border. With a combined population of around 2 million inhabitants, the Paso del Norte region is isolated, more than 500 km away from the nearest urban area of comparable size, thus making it an ideal location for air quality studies of an isolated urban environment. The meteorological conditions leading to a high ozone episode in this region, such as the historical ozone episode of June 2006, are analyzed. It is well known that stagnation and minimal winds, high temperatures, and pressure ridges over the region are conducive to high ozone episodes. In addition, the planetary boundary height is studied to understand its impact on high ozone episodes. Several studies report that ground level ozone non-attainment regulations could be caused not only by local emissions, but also by atmospheric transport. In this work the atmospheric advection of pollutants into the region is analyzed using HYSPLIT backward trajectories. Furthermore, a novel backward trajectory clustering technique is implemented for the summer of 2006. The "ozone weekend effect" (OWE) is a phenomenon by which in some geographical regions ambient ozone concentrations tend to be higher on weekends than on weekdays, despite the lower emissions of ozone precursors during those days. The observed local OWE has never previously been studied in terms of the photolysis rates of four of the main ozone precursors. In this research a novel method that allows the calculation of actinic fluxes, photolysis frequencies and photolysis rates with a high degree of accuracy and reliability has been developed. This method utilizes a combination of the experimental data available for this region in conjunction with a radiative transfer model (TUV model). Three weekend-weekday cases during summers 2006, 2009 and 2010 are studied in this work. In this research, the photolysis impact on the local OWE is studied. The results

  6. DELIVERING TIMELY AIR QUALITY, TRAFFIC, AND WEATHER INFORMATION TO YOUR COMMUNITY/THE PASO DEL NORTE ENVIRONMENTAL MONITORING PROJECT

    EPA Science Inventory

    EPA has developed a technology transfer handbook for the EMPACT Paso del Norte Project. The EMPACT Paso del Norte Environmental Monitoring Project is a mobile vehicle emissions project that involves the international community of El Paso, TX; Sundland Park, NM; and Juarez, Mexico...

  7. 40 CFR 81.82 - El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 18 2014-07-01 2014-07-01 false El Paso-Las Cruces-Alamogordo... Designation of Air Quality Control Regions § 81.82 El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region. The El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region (New...

  8. 77 FR 59607 - El Paso Natural Gas Company; Notice of Public Scoping Meetings for the Planned SASABE Lateral...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-28

    ... Energy Regulatory Commission El Paso Natural Gas Company; Notice of Public Scoping Meetings for the... or Commission) Office of Energy Project's staff will hold public scoping meetings for El Paso Natural Gas Company's (El Paso) Sasabe Lateral Project (Project). The Project is a planned 60-...

  9. 40 CFR 81.82 - El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 17 2011-07-01 2011-07-01 false El Paso-Las Cruces-Alamogordo... Designation of Air Quality Control Regions § 81.82 El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region. The El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region (New...

  10. 40 CFR 81.82 - El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 18 2013-07-01 2013-07-01 false El Paso-Las Cruces-Alamogordo... Designation of Air Quality Control Regions § 81.82 El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region. The El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region (New...

  11. 40 CFR 81.82 - El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 18 2012-07-01 2012-07-01 false El Paso-Las Cruces-Alamogordo... Designation of Air Quality Control Regions § 81.82 El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region. The El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region (New...

  12. 40 CFR 81.82 - El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false El Paso-Las Cruces-Alamogordo... Designation of Air Quality Control Regions § 81.82 El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region. The El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region (New...

  13. 78 FR 4124 - Foreign-Trade Zone 68-El Paso, TX, Application for Subzone, Expeditors International of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ... Foreign-Trade Zones Board Foreign-Trade Zone 68--El Paso, TX, Application for Subzone, Expeditors International of Washington, Inc., El Paso, TX An application has been submitted to the Foreign-Trade Zones Board (the Board) by the City of El Paso, grantee of FTZ 68, requesting special-purpose subzone...

  14. Hypertension among oral contraceptive users in El Paso, Texas.

    PubMed

    White, Kari; Potter, Joseph E; Hopkins, Kristine; Amastae, Jon; Grossman, Daniel

    2013-11-01

    On the U.S.-Mexico border, residents frequently cross into Mexico to obtain medications or medical care. We previously reported relatively high prevalence of hypertension among Latina oral contraceptive users in El Paso, particularly those obtaining pills over the counter (OTC) in Mexico. Here, we examine factors associated with having hypertension among 411 OTC users and 399 clinic users. We also assess hypertension awareness and interest in using blood pressure kiosks. Women age 35 to 44 and who had BMI ≥ 30 kg/m2 had higher odds of having hypertension. 59% of hypertensive women had unrecognized hypertension, and 77% of all participants would use a blood pressure kiosk; there were no significant differences between clinic and OTC users. Alternative approaches to increase access to health screenings are needed in this setting, where OTC pill use among women with unrecognized hypertension confers unique health risks. PMID:24185148

  15. [Energy education exhibits for Insights El Paso Science Museum

    SciTech Connect

    Shubinski, R.

    1998-05-27

    The grant in question, DE-FG03-94ER75954, was awarded to Insights El Paso Science Museum to build key exhibits. These exhibits helped the Museum fulfill its mission to ``promote curiosity and stimulate interest by exploratory, entertaining, exciting, and participatory learning in a broad range of scientific disciplines to persons of all ages regionally and internationally.`` There are several current Board of Directors members who also were Board members during the grant period and who helped construct some of the exhibits. Through speaking with them and reviewing minutes of Board meetings during 1994, it has been determined that seven of the ten proposed exhibits were constructed, with an eighth exhibit constructed as an alternative. Photos of seven of the exhibits and preliminary sketches of some are attached. Following is a list of the constructed exhibits: Hot or Cold, Give and Take, Conduction, Convection, Sources of Energy, Wind Generator, Solar Tracker, and Perpetual Motion.

  16. Perception of environmental risk in three El Paso communities

    SciTech Connect

    Byrd, T.L.; VanDerslice, J.

    1996-12-31

    Perceptions of environmental risk were explored in three communities of El Paso, Texas, through a series of focus groups and a door-to-door survey of 147 residents. Included in the survey were questions about (a) knowledge of environmental risks and the perceived level of risk, (b) sources of information and source credibility, and (c) general attitudes about risk, locus of control, and the government`s ability to protect the population. The three communities, each of different SES, were compared for differences in risk perceptions, knowledge, and attitudes. In general, perceived risk to self and family was consistently lower than perceived risk to the community as a whole, especially for risks that might be considered behavioral in nature. Surprisingly, only a small proportion of respondents were even aware of local and national environmental agencies. The media was by far the most common source of environmental risk information. These results demonstrate a clear need for improved environmental risk communication along the US-Mexico border.

  17. Social Disparities in Children’s Respiratory Health in El Paso, Texas

    PubMed Central

    Grineski, Sara E.; Collins, Timothy W.; Chavez-Payan, Paola; Jimenez, Anthony M.; Clark-Reyna, Stephanie; Gaines, Marie; Kim, Young-an

    2014-01-01

    The objectives of this study were to assess prevalence of children’s respiratory health conditions and to measure and describe social disparities in children’s respiratory problems and access to health resources for asthma/wheezing management. Data were collected through a cross-sectional, observational mail survey of all primary caretakers of 4th and 5th grade children in El Paso Independent School District (El Paso, TX, USA). 6295 primary caretakers received surveys at their home address and 1904 surveys were completed and returned for a 30% response rate. El Paso children have high rates of asthma (17%) and allergies (51%). In terms of social disparities, children that are male, not poor, obese, Hispanic, born in El Paso, have a US-born caretaker, and have a caretaker who has lower levels Spanish proficiency have increased odds of respiratory problems. Among children with asthma and wheezing, disparities exist in access to care; those that are poor, with a Spanish-speaking caretaker, or with a foreign-born caretaker had increased odds of seeking care in urgent care center, emergency rooms and hospitals. Results have scholarly and practical implications for broader trends in terms of increasing prevalence of respiratory health problems across multiple scales (from El Paso to the US context to worldwide) and health disparities experienced within the rapidly growing US Hispanic population. PMID:24619157

  18. Seismic Hazard Analysis in EL Paso/juarez Area from Study of Young Fault Scarps

    NASA Astrophysics Data System (ADS)

    ashenfelter, K. R.

    2012-12-01

    The El Paso-Juarez metropolitan area contains a known record of active faulting, but also has one of the most poorly known paleoseismic records. The scarcity of data means that nearly 2 million people are exposed to a seismic hazard with little known on the actual risk. Active faults are known along the eastern side of the Franklin Mountains as well as young ruptures within the Hueco Bolson in East El Paso, yet the only fault with paleoseismic studies is the East Franklin's fault. Recent population increases in the El Paso region have led to a construction boom in east El Paso, and many of these construction sites cross known Quaternary fault ruptures. This research project contains two potential components: 1) An exploratory component: students can use existing fault maps and high resolution aerial photography to seek out sites where active construction sites might be unearthing exposures of young fault ruptures. The study is exploratory, and involves carefully mapping using field GIS systems to document areas for potential study, map possible faults, etc. 2) An active fault study in an urbanized environment: The east Franklins fault is a known active fault. The scarp is exposed near trans-mountain road, and along some side streets in NE El Paso. Potential studies include careful mapping of fault scarp topographic profiles, and mapping surface traces.

  19. Ground-water resources of the Hueco Bolson, northeast of El Paso, Texas

    USGS Publications Warehouse

    Knowles, Doyle Blewer; Kennedy, Richard A.

    1958-01-01

    The Hueco Bolson is in the extreme western part of Texas and south- central New Mexico, covering parts of El Paso County, Tex., and Dona Ana and Otero Counties, N. Mex. Wells tapping the bolson deposits furnish the major part of the water supply for the city of El Paso, Ciudad Juarez, Fort Bliss, Biggs Air Force Base, and private industries. in the area. The progressively increasing demand for water made it obvious that a comprehensive investigation of the quantity and quality of water in storage in the entire Hueco Bolson would be essential for the proper planning of future water supplies. A test-drilling program was started in 1953, jointly sponsored by the city of El Paso, the United States Army, the United States Air Force, and the Texas Board of Water Engineers. The drilling was supervised by the United States Geological Survey.

  20. GIS-MODELED INDICATORS OF MOBILE SOURCE EMISSIONS AND ADVERSE HEALTH EFFECTS AMONG CHILDREN IN EL PASO, TEXAS,USA*

    EPA Science Inventory

    The El Paso Children's Health Study has been a major collaborative effort by NHEERL and NERL scientists to examine the role of mobile source emissions in the development of allergies and asthma among 4th and 5th grade children in El Paso, TX. The purpose of this study was to dete...

  1. GIS-MODELED INDICATORS OF MOBILE SOURCE EMISSIONS AND ADVERSE HEALTH EFFECTS AMONG CHILDREN IN EL PASO, TEXAS, USA

    EPA Science Inventory

    The El Paso Children's Health Study has been a major collaborative effort by NHEERL and NERL scientists to examine the role of mobile source emissions in the development of allergies and asthma among 4th and 5th grade children in El Paso, TX. The purpose of this study was to det...

  2. 78 FR 21934 - El Paso Natural Gas Company, L.L.C.; Notice of Request Under Blanket Authorization

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-12

    ... Authorization Take notice that on March 26, 2013, El Paso Natural Gas Company, L.L.C. (El Paso), P.O. Box 1087...., P.O. Box 1087, Colorado Springs, CO 80944, (719) 667-7517. Any person or the Commission's staff...

  3. 78 FR 22540 - El Paso Natural Gas Company, L.L.C.; Notice of Petition for Declaratory Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-16

    ... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF ENERGY Federal Energy Regulatory Commission El Paso Natural Gas Company, L.L.C.; Notice of Petition for... Practice and Procedure, 18 CFR 385.207(a)(2)(2012), El Paso Natural Gas Company, L.L.C. (EPNG) submits...

  4. CONTINUOUS MEASUREMENT OF FINE AND ULTRAFINE PARTICULATE MATTER, CRITERIA POLLUTANTS AND METEOROLOGICAL CONDITIONS IN URBAN EL PASO, TEXAS

    EPA Science Inventory

    Continuous measurements of aerosol size distributions were made in El Paso, TX, for a period in winter 1999. Size distribution measurements were performed at two urban locations in El Paso using two pairs of the scanning mobility particle sizer and the aerodynamic particle si...

  5. El Paso and White Sands area as seen from the Apollo 6 unmanned spacecraft

    NASA Technical Reports Server (NTRS)

    1968-01-01

    The El Paso and White Sands area are photographed from the Apollo 6 (Spacecraft 020/Saturn 502) unmanned space mission three hours and eight minutes after liftoff. North is toward top of picture. Near bottom center of picture is the El Paso-Ciudad Juarez, Mexico metropolitan area. At the top is the White Sands National Monument area. Note Rio Grande River on left side of picture. The snow-covered Sacremento Mountains are seen in the upper right corner. The altitude of the spacecraft when this photograph was taken was 115 nautical miles.

  6. Mediated Debate, Historical Framing, and Public Art: The Juan de Onate Controversy in El Paso

    ERIC Educational Resources Information Center

    Perez, Frank G.; Ortega, Carlos F.

    2008-01-01

    In 1988, the El Paso, Texas, city council accepted a proposal to build twelve statues of historically important individuals as part of a downtown revitalization initiative. Juan de Onate was selected as the centerpiece statue of the XII Travelers Memorial of the Southwest. The decision to honor the Spanish colonizer triggered a local controversy…

  7. Comparing Values in Education on the U.S.-Mexican Border, El Paso and Ciudad Juarez.

    ERIC Educational Resources Information Center

    Rippberger, Susan; Staudt, Kathleen

    A three-year study examined attitudes toward education and public schools through behaviors in elementary schools in two United States-Mexican border towns, El Paso (Texas) and Ciudad Juarez (Mexico). It looked at curricular civic rituals such as the flag salute, and more covert normative training found in classroom organization and management…

  8. Urban Impact of Dissolved Metals in the Paso del Norte Segment of the Rio Grande

    ERIC Educational Resources Information Center

    Freiwan, Sumayeh Ahmad

    2013-01-01

    The Paso del Norte segment of the Rio Grande experiences two seasons per year; the (wet) irrigation season and the (dry) non-irrigation season. The goal of this study was to improve the understanding of occurrence and contribution of dissolved metals in this region during the non-irrigation season. The objectives of this study were to (1) evaluate…

  9. Service Integration in Colorado: Connecting Programs To Provide Better Services in Mesa and El Paso Counties.

    ERIC Educational Resources Information Center

    Ragan, Mark

    Efforts to integrate the delivery of human service programs (HSP) in Colorado's El Paso County and Mesa County were examined through site visits and meetings with 34 members of HSP staff in both counties. The site visits confirmed that staff and management of HSP in both counties have implemented a series of client-centered processes to provide…

  10. Literacy for a Global Economy: A Multicultural Perspective. Conference Proceedings (El Paso, Texas, February 1990).

    ERIC Educational Resources Information Center

    Lewis, Ann

    A February 1990 meeting, held at El Paso Community College (Texas) honoring language and cultural diversity in the adult literacy field is summarized. The report describes the conference's tour activities sampling local cultural sites, presents "quotable quotes" of participants and leaders, and reviews the issues and trends in literacy education…

  11. Moving Welfare Families into Economic Self-Sufficiency: A Model from El Paso Community College.

    ERIC Educational Resources Information Center

    Bombach, Kathleen

    2001-01-01

    Discusses how El Paso Community College (Texas) linked welfare-to-work participants to college credit programs that offer realistic pathways to certificates, associate degrees, and bachelor degrees. Stresses training for employment that offers a living wage over immediate employment. (AUTH/NB)

  12. Closing the Achievement Gap in El Paso: A Collaboration for K-16 Renewal.

    ERIC Educational Resources Information Center

    Navarro, M. Susana; Natalicio, Diana S.

    1999-01-01

    To close the Anglo/ethnic minority achievement gap, 11 education and community leaders formed the El Paso Collaborative for Academic Excellence. Two goals were paramount: ensuring success among K-16 youngsters in area educational institutions and ensuring all high-school graduates' readiness for college. The program achieved impressive results.…

  13. Paso del Norte pilot border study of ozone precursors and air toxics

    SciTech Connect

    Zielinska, B.; Sheetz, L.; Harshfield, G.

    1996-12-31

    A comprehensive monitoring program for ozone precursors and air toxics in the Paso del Norte border area is planned by the U.S. EPA for the Summer of 1996. A pilot study was carried out in October 1995 in the Paso del Norte area (El Paso, Texas, Ciudad Juarez, Chihuahua, and Sunland Park, New Mexico) to test the appropriateness of proposed sampling and analysis methods and to provide preliminary data to be used for planning the Summer 1996 study. Two monitoring sites were selected, one in Ciudad Juarez, and one in the El Paso area. Samples were collected every second day from October 21 to October 31, from 0300 to 0900 hr using stainless steel canisters (for VOC in the C{sub 2}-C{sub 12} range), Tenax-TA solid adsorbent cartridges (for C{sub 8}-C{sub 20} hydrocarbons). DNPH impregnated C{sub 18} Sep-Pack cartridges (for carbonyl compounds) and Teflon impregnated glass fiber filters followed by PUF/YAD/PUF {open_quotes}sandwich{close_quotes} cartridges (for SVOC). This paper discusses the data set obtained from the analyses of these samples. 6 refs., 7 figs.

  14. Interaction and Relationship Between Groundwater and Surface Water at Keystone Heritage Park EL Paso Texas

    NASA Astrophysics Data System (ADS)

    Gonzalez, B.

    2012-12-01

    Belinda Gonzalez1, Joshua Villalobos1, Marissa Cameron 2 1Department of Geological Sciences, El Paso Community College, El Paso, TX 79925, USA 2Department of Geological Sciences, University of Texas at El Paso, El Paso, TX 79968, USA beli_72764@yahoo.com Historically the floodplain of the Rio Grande River was dotted with shifting wetlands and ponds.The increasing population throughout the United States and Mexico has made it necessary to put the Rio Grande floodplain under till for cultivation. Along with cultivation, the river was channelized and dammed to prevent flooding and to stabilize the Mexico/U.S. border.The loss of wetland ecosystems in the area changed migration patterns of water fowl and destroyed priceless aquatic habitats.The area of our study, Keystone Heritage Park, is the last remaining open wetlands in El Paso County. Before efforts of restoration to reestablish wetlands associated with the Rio Grande can begin, there must be an in-depth, and complete, understanding of the surface and subsurface hydrological system which created and sustains this last remaining wetland. Studies of the wetland's soil properties and their effect on groundwater flow have indicated regions on the periphery of the wetlands where soils are saturated with moisture.These subsurface regions of saturated soils are semi-linear in shape and lead toward the wetland indicating that they are possible loci for groundwater flow for the wetland.These subsurface soil layers are possibly composed of mountain front alluvium that is being feed with meteoric water entering faults that bound the nearby Franklin Mountains.The primary goals of this study are 1) initiate a systematic data acquisition from 9 piezometers and 2 water level loggers of temporal variations in the depth of the groundwater due to regional pumping or rain fall and 2) generate a depth and TDS (Total Dissolved Solids) profile of the wetland pond to locate regions where groundwater maybe entering the lake.

  15. Hydrocarbon source apportionment for the 1996 Paso del Norte Ozone Study.

    PubMed

    Fujita, E M

    2001-08-10

    The 1996 Paso del Norte (PdN) ozone study was conducted to improve current understanding of the significant meteorological and air quality processes that lead to high concentrations of ozone in El Paso, Texas (USA) and Ciudad Juárez, Chihuahua (Mexico). Two-hour canister samples were collected five times daily at 05.00-07.00 h, 07.00-09.00 h, 09.00-11.00 h, 11.00-13.00 h, and 15.00-17.00 h MST during intensive study periods at one urban and one rural site on each side of the border. An automated gas chromatograph was operated at one site in central El Paso. Source profiles (the fractional chemical composition of emissions) from motor vehicles, gasoline, liquefied petroleum gas, and commercial natural gas were combined with source profiles from other studies for input to the Chemical Mass Balance (CMB) receptor model to apportion the measured non-methane hydrocarbons (NMHC) to sources. On-road vehicle emissions accounted for one-half to two-thirds of the NMHC in Ciudad Juárez and El Paso with the highest contributions occurring during the morning and afternoon commute periods. Emissions from diesel exhaust contributed approximately 2-3% of NMHC in Ciudad Juárez and less than 2% in El Paso. The average sum of liquid gasoline and gasoline vapor increased during the day in Ciudad Juárez from 2% at 06.00 h to approximately 12% at 16.00 h. Diurnal and day-of-the-week patterns in the liquid gasoline contributions are essentially identical to the corresponding patterns for motor vehicle exhaust, which suggest that a large fraction of the liquid gasoline contribution may be associated with tailpipe emissions rather than evaporative emissions from motor vehicles or industrial sources. Including the sum of the two sources put the upper limit for tailpipe contributions at 60-70% of NMHC. PMID:11516134

  16. Titanium Mass-balance Analysis of Paso Robles Soils: Elemental Gains and Losses as Affected by Acid Alteration Fluids

    NASA Technical Reports Server (NTRS)

    Sutter, Brad; Ming, Douglas W.

    2010-01-01

    The Columbia Hills soils have been exposed to aqueous alteration in alkaline [1] as well as acid conditions [2,3]. The Paso Robles class soils are bright soils that possess the highest S concentration of any soil measured on Mars [2]. Ferric-sulfate detection by Moessbauer analysis indicated that acid solutions were involved in forming these soils [4]. These soils are proposed to have formed by alteration of nearby rock by volcanic hydrothermal or fumarolic activity. The Paso Robles soils consist of the original Paso Robles-disturbed-Pasadena (PR-dist), Paso Robles- PasoLight (PR-PL), Arad-Samra, Arad-Hula, Tyrone- Berker Island1 and Tyrone-MountDarwin [2 ,3. ]Chemical characteristics indicate that the PR-dist and PR-PL soils could be derived from acid weathering of local Wishstone rocks while the Samra and Hula soils are likely derived from local Algonquin-Iroquet rock [3]. The Paso Robles soils were exposed to acidic sulfur bearing fluids; however, little else is known about the chemistry of the alteration fluid and its effects on the alteration of the proposed parent materials. The objectives of this work are to conduct titanium normalized mass-balance analysis to1) assess elemental gains and losses from the parent materials in the formation of the Paso Robles soils and 2) utilize this information to indicate the chemical nature of the alteration fluids.

  17. Geoseismic issues considered for design of the Samalayuca pipeline, El Paso County, Texas

    SciTech Connect

    Keaton, J.R.; Beckwith, G.H.; Medina, O.

    1995-12-31

    The Samalayuca, Pipeline is a proposed 20-inch-diameter natural gas pipeline extending approximately 21 miles from the Hueco Compressor Station on the El Paso Natural Gas main line to the International Boundary with Mexico near Clint, Texas, about 25 miles southeast of El Paso. The purpose of the project is to supply gas for power generation at a plant south of Cuidad Juarez, Chihuahua, Mexico. Geoseismic issues considered in the design of the Samalayuca Pipeline consisted of surface fault rupture, earthquake-induced landslides, and liquefaction-induced ground displacement.Faults represent two kinds of hazard to pipeline facilities: surface displacement and strong shaking. Earthquake-induced landslides and liquefaction require strong shaking to occur before these processes represent hazards to buried pipelines.

  18. PACES Participation in Educational Outreach Programs at the University of Texas at El Paso

    NASA Technical Reports Server (NTRS)

    Dodge, Rebecca L.

    1997-01-01

    The University of Texas at El Paso (UTEP) is involved in several initiatives to improve science education within the El Paso area public schools. These include outreach efforts into the K- 12 classrooms; training programs for in-service teachers; and the introduction of a strong science core curricula within the College of Education. The Pan American Center for Earth and Environmental Studies (PACES), a NASA-funded University Research Center, will leverage off the goals of these existing initiatives to provide curriculum support materials at all levels. We will use currently available Mission to Planet Earth (MTPE) materials as well as new materials developed specifically for this region, in an effort to introduce the Earth System Science perspective into these programs. In addition, we are developing curriculum support materials and classes within the Geology and Computer Departments, to provide education in the area of remote sensing and GIS applications at the undergraduate and graduate levels.

  19. Composition and Formation of the "Paso Robles" Class Soils at Gusev Crater

    NASA Technical Reports Server (NTRS)

    Yen, A. S.; Morris, Richard V.; Gellert, R.; Clark, B. C.; Ming, Douglas W.; Klingelhoefer, G.; McCoy, T. J.; Schmidt, M. E.

    2007-01-01

    Light-toned, subsurface soil deposits have been excavated by the Mars Exploration Rover (MER) Spirit in six distinct locations along its traverse across the Columbia Hills of Gusev Crater. Samples at two of these sites have been analyzed in detail by the M ssbauer (MB) and Alpha Particle X-ray Spectrometers (APXS), providing information on iron mineralogy and elemental chemistry, respectively. These soils are referred to as "Paso Robles" class deposits.

  20. Hydrocarbon source apportionment for the 1996 Paso del Norte ozone study

    SciTech Connect

    Fujita, E.M.

    1999-07-01

    This paper provides a summary of the nonmethane hydrocarbon (NMHC) source apportionments performed at Desert Research Institute as part of the 1996 Paso del Norte Ozone Study. Version 8 of the Chemical Mass Balance (CMB) receptor model was applied to a total of 2232 hourly automated gas chromatography (auto-GC) and 225 two-hour canister samples. The auto-GC system was operated by the Texas Natural Resource Conservation Commission at one site in central El Paso. Two-hour canister samples were collected five times per day at 0500--0700, 0700--0900, 0900--1100, 1100--1300, and 1500--1700 MST during intensive study periods at one urban and one rural site on each side of the border. Gasoline vehicle exhaust accounts for one-half to two-thirds of NMHC in Juarez and El Paso with highest contributions during the morning and afternoon commute periods. Emissions from diesel exhaust and propane buses are both 2 to 5% of NMHC in Juarez and less than 2% in El Paso. The average sum of liquid gasoline and gasoline vapor increases during the day in Juarez from 2% at 0600 to about 8% at 1600. Diurnal and day-of-the-week patterns in the liquid gasoline contributions are essentially identical to the corresponding patterns for motor vehicle exhaust. These patterns suggest that a large fraction of the liquid gasoline contribution is associated with tailpipe emissions rather than evaporative emissions from either vehicle or industrial sources. Additionally, the contributions of liquid gasoline are strongly correlated with vehicle exhaust with respect to wind direction. The sum of the two sources put the upper limit for tailpipe contributions at 60 to 70%t of NMHC.

  1. The Influence of Photolysis Rate Constants in Ozone Production for the Paso del Norte Region

    NASA Astrophysics Data System (ADS)

    Becerra, Fernando; Fitzgerald, Rosa

    2012-03-01

    In this research work we are focusing on understanding the relationship between photolysis rates and the photochemical ozone changes observed in the Paso del Norte region. The city of El Paso, Texas together with Ciudad Juarez, Mexico, forms the largest contiguous bi-national metropolitan area. This region suffers year-round ozone pollution events, and a better understanding is needed to mitigate them. Previous studies have found that ambient ozone concentrations tend to be higher on weekends rather than on weekdays, this phenomenon being referred to, as the ``weekend effect.'' If the ozone standard is exceeded more frequently on weekends, then this phenomenon must be considered in the design of ozone control strategies. In this work we investigate some of the most representative weekend ozone episodes at El Paso, TX, during the years 2009, 2010 and 2011 using the ozone photolysis rates. In this research the TUV radiative-transfer model is used to calculate the local photolysis rates and a UV MFRSR instrument is used to obtain experimental parameters. Seasonal variations and the weekday-weekend effect is studied. The results of this research will help to understand the underlying behavior of the photolysis rate constants when different atmospheric conditions are present.

  2. Phenomena that influence high ozone concentrations in the Paso del Norte area

    SciTech Connect

    MacDonald, C.P.; Roberts, P.T.; Main, H.H.; Dye, T.S.; Yarbrough, J.

    1998-12-31

    This paper summarizes the results of analyses of meteorological and air quality data for the 1996 Paso del Norte Ozone Study. The purpose of these data analyses was to develop an understanding of the significant chemical and physical processes which lead to high concentrations of ozone in the Paso del Norte study region which includes El Paso, TX; Sunland Park, NM; and Juarez, Mexico. This analysis has shown that the high ozone concentrations are a result of slow convective boundary layer growth, reduced convective boundary layer depth, light surface winds, and high morning surface ozone precursor concentrations. Overlying meteorological conditions observed during high ozone episodes include an upstream aloft high pressure system, aloft warming, and weak surface pressure gradients. The analysis has also shown that aloft carryover of ozone and ozone precursors does not significantly contribute to the surface ozone concentration. Furthermore, hydrocarbon and NO{sub x} data, although spatially limited, show that the system is most often NO{sub x} rather than VOC limited.

  3. Results from an investigation of the integration of wind energy into the El Paso Electric grid system

    SciTech Connect

    Moroz, E.M.; Parks, N.J.; Swift, A.H.; Traichal, P.A.

    1997-12-31

    This paper documents some preliminary results from an evaluation of the costs and benefits to be gained from the integration of wind generated electricity into the El Paso Electric grid system. The study focused on the utilization of the considerable known wind potential of the Guadalupe/Delaware Mountains region, but also looked at other energetic wind resources within 15 miles of El Paso Electric`s Grid. The original project`s goal was to identify the added value of wind in terms of jobs, line support, risk reduction etc., that wind energy could bring to El Paso Electric. Although these goals have not yet been achieved the potential for water savings and reductions in gaseous emissions have been documented. Thus this paper focuses mainly on the water consumption and criteria pollutant emissions that could be avoided by adding wind energy to El Paso Electric`s generation mix. Preliminary data from a renewables attitude survey indicates that, from the 338 respondents, there is overwhelming public support for utilizing such renewable sources of electricity. This case study, which should be of direct relevance to the arid southwestern states and beyond, was sponsored by the Environmental Protection Agency (EPA) and conducted in cooperation with El Paso Electric.

  4. Winter season air pollution in El Paso-Ciudad Juarez. A review of air pollution studies in an international airshed

    SciTech Connect

    Einfeld, W.; Church, H.W.

    1995-03-01

    This report summarizes a number of research efforts completed over the past 20 years in the El Paso del Norte region to characterize pollution sources and air quality trends. The El Paso del Norte region encompasses the cities of El Paso, Texas and Ciudad Juarez, Chihuahua and is representative of many US-Mexico border communities that are facing important air quality issues as population growth and industrialization of Mexican border communities continue. Special attention is given to a group of studies carried out under special US Congressional funding and administered by the US Environmental Protection Agency. Many of these studies were fielded within the last several years to develop a better understanding of air pollution sources and trends in this typical border community. Summary findings from a wide range of studies dealing with such issues as the temporal and spatial distribution of pollutants and pollution potential from both stationary and mobile sources in both cities are presented. Particular emphasis is given to a recent study in El Paso-Ciudad Juarez that focussed on winter season PM{sub 10} pollution in El Paso-Ciudad Juarez. Preliminary estimates from this short-term study reveal that biomass combustion products and crustal material are significant components of winter season PM{sub 10} in this international border community.

  5. Investigation of Soil Permeability and Hydrological Properties of Flood Plain Deposits of the Rio Grande in EL Paso TX

    NASA Astrophysics Data System (ADS)

    Schacht, D.; Jin, L.; Doser, D. I.

    2013-12-01

    The various soil types within the flood plains of Rio Grande in El Paso 's Lower Valley have long been utilized by local farmers. These soils are typically more conducive to farming than the more recent (Pliocene) sandy soils outside of the flood plain region. This project will explore the various properties of these soils types such as their grain size, depths, extent, and hydrological conductivity utilizing various geophysical and geochemical methods. The study site is located in El Paso 's Lower Valley and is situated in an actively farmed area. Soil maps from the Natural Resource Conservation Service (NRCS) and variations in vegetation growth will help delineate locations of soil types in the study area. The information that will be collected will produce baseline data to help track expected seasonal variations in the soil's moisture content and in the depth of the local water table. This project represents a collaboration between El Paso Community College's and the University of Texas at El Paso's Departments of Geological Sciences as a means for students majoring in Geological Sciences at El Paso Community College to gain hands on experience in researching geological issues through partnerships with their future institution and faculty.

  6. Obstetric emergencies at the United States–Mexico border crossings in El Paso, Texas

    PubMed Central

    McDonald, Jill A.; Rishel, Karen; Escobedo, Miguel A.; Arellano, Danielle E.; Cunningham, Timothy J.

    2015-01-01

    Objective To describe the frequency, characteristics, and patient outcomes for women who accessed Emergency Medical Services (EMS) for obstetric emergencies at the ports of entry (POE) between El Paso, Texas, United States of America, and Ciudad Juárez, Chihuahua, Mexico. Methods A descriptive study of women 12–49 years of age for whom an EMS ambulance was called to an El Paso POE location from December 2008–April 2011 was conducted. Women were identified through surveillance of EMS records. EMS and emergency department (ED) records were abstracted for all women through December 2009 and for women with an obstetric emergency through April 2011. For obstetric patients admitted to the hospital, additional prenatal and birth characteristics were collected. Frequencies and proportions were estimated for each variable; differences between residents of the United States and Mexico were tested. Results During December 2008–December 2009, 47.6% (68/143) of women receiving EMS assistance at an El Paso POE had an obstetric emergency, nearly 20 times the proportion for Texas overall. During December 2008–April 2011, 60.1% (66/109) of obstetric patients with ED records were admitted to hospital and 52 gave birth before discharge. Preterm birth (23.1%; No. = 12), low birth weight (9.6%; No. = 5), birth in transit (7.7%; No. = 4), and postpartum hemorrhage (5.8%; No. = 3) were common; fewer than one-half the women (46.2%; No. = 24) had evidence of prenatal care. Conclusions The high proportion of obstetric EMS transports and high prevalence of complications in this population suggest a need for binational risk reduction efforts. PMID:25915011

  7. Compilation and evaluation of a Paso del Norte emission inventory for use in photochemical dispersion modeling

    SciTech Connect

    Haste, T.L.; Kumar, N.; Chinkin, L.R.; Roberts, P.T.; Saeger, M.; Mulligan, S.; Yarbrough, J.

    1999-07-01

    Emission inventories are routinely used for planning purposes and as input to comprehensive photochemical air quality models. Photochemical model performance and the development of an effective control strategy are predicated on the accuracy of an underlying emission inventory. The purpose of this study was to compile an ozone precursor emission inventory for the El Paso/Ciudad Juarez/Southern Dona Ana region; generate a spatially and temporally resolved, speciated emission inventory; and evaluate the accuracy and representativeness of the inventory. Existing point, area, and mobile source emissions data were obtained from local government agencies. Emissions were spatially and temporally allocated to a gridded domain using region-specific demographic and land cover information. The inventory was processed using the US Environmental Protection Agency (EPA) recommended Urban Airshed Model Emissions Preprocessor System 2.0 (UAM-EPS 2.0) which generates emissions files that can be directly used as input to the Urban Airshed Model. An evaluation of the emission inventory was then performed by comparing inventory non-methane hydrocarbon (NMHC)/NO{sub x} and CO/NO{sub x} ratios to ambient ratios using air quality data collected during the 1996 Paso del Norte Ozone Study. Detailed NMHC species comparisons were also made in order to investigate the relative composition of individual hydrocarbon species in the emission inventory and in the ambient data. This initial emission inventory is expected to undergo substantial revisions during the upcoming photochemical modeling phase of the effort to better understand and improve the air quality of the El Paso/Ciudad Juarez/Southern Dona Ana region.

  8. GIS-modeled indicators of traffic-related air pollutants and adverse pulmonary health among children in El Paso, Texas, USA.

    EPA Science Inventory

    The El Paso Children?s Health Study examined 5,654 children enrolled in the El Paso, Texas public school district by questionnaire in 2001. Exposure measurements were first collected in the late fall of 1999. Then school-level and residence-level exposures to traffic-related air ...

  9. Early College High Schools Established from 2006 through 2008 in El Paso County, Texas: Discovering Factors Contributing to Hispanic Student Success

    ERIC Educational Resources Information Center

    Munoz, Maluka Dorotea

    2011-01-01

    The purpose of this study was to (a) identify factors contributing to the success of Hispanic students in four Early College High Schools (ECHSs) in El Paso County, (b) identify components of the ECHSs that can be realistically considered for implementation by administrators of larger public high schools in El Paso County, and (c) determine…

  10. A Study of Y.W.C.A. Services Performed for Pregnant and Parenting High School Students of El Paso from 1982 to 1985.

    ERIC Educational Resources Information Center

    Jackson, Ronald B.

    Questionnaires and interviews were used to study the effectiveness of programs provided for pregnant and parenting students by the Young Women's Christian Association (YWCA) of El Paso, Texas. The study focused on the School-Age Parent Center (SPC), established in 1974 by the El Paso Independent School District, and the YWCA programs and services…

  11. Summary of hydrologic information in the El Paso, Texas, area, with emphasis on ground-water studies, 1903-80

    USGS Publications Warehouse

    White, D.E.

    1983-01-01

    Flow in the Rio Grande is diverted for crop irrigation in the United States and the Republic of Mexico, and for limited municipal supply in El Paso. The flow is regulated by releases from reservoirs in New Mexico and varies widely in both quantity and quality (dissolved-solids concentrations). During 1943-80, the flow at El Paso ranged from 57,481 acre-feet (71 cubic hectometers) in 1956 to 631,800 acre-feet (779 cubic hectometers) in 1943 and averaged about 317,000 acre-feet per year (391 cubic hectometers).

  12. Increasing Minority Participation and Matriculation in the Geosciences at El Paso Community College

    NASA Astrophysics Data System (ADS)

    Villalobos, J. I.

    2011-12-01

    Community colleges currently serve 44% of all undergraduate students and 45% of all of all first time freshmen in the US. Hispanics now constitute 15% of the general population and 19% of the college population in the US. This increase has led to more institutions emerging as HSI (Hispanic Serving Institution) by the federal government. These facts illustrate the potential community colleges hold to encourage STEM (Science Technology Engineering and Math) majors to minorities as well as non-minorities. But the reality is the number of STEM degrees awarded at community colleges has not followed the same trends in enrollment. El Paso Community College (EPCC) currently enrolls 27,000 students with 85% of the student body being Hispanic. More than 130 programs of study are offered including an Associate of Science degree in Geological Sciences. Over the past three years we have implemented several initiatives in our effort to increase the number of Geological Science (GS) majors at EPCC. These efforts are aimed to decrease attrition rates of science majors by; streamlining the GS degree plan along with the process of course registration, introduce field-based research projects to students to allow hands on research, develop a work relationships with students and university faculty, increase the number of geology courses offered at EPCC including a field-based capstone course (GEOL 2407- Geological Field Methods), and strengthening the educational-bridge between the geological science departments of EPCC and University of Texas at El Paso.

  13. Depositional environments and diagenesis of El Paso Group, Southern Hueco Mountains, Hudspeth County, Texas

    SciTech Connect

    Aluka, I.J.

    1988-01-01

    The El Paso Group, a predominantly carbonate sequence, overlies the time-transgressive Cambrian-Ordovician Bliss Sandstone, and underlies the Upper Ordovician Montoya Group. The sequence contains three units (in ascending order): lower limestone, middle cherty limestone, and upper dolomite. The units were deposited in a shelf lagoon with open and restricted circulation, subtidal and intertidal environments. Deposition in these environments is indicated by the presence of land-derived clastics (silt- and sand-size quartz), abundant pellets, micrite, a variety of textures (mudstones to grainstones), algal structures, cross-bedding, and inter-fingering of clastics with limestones due to sedimentary offlap and onlap resulting in clastic progradation west and east from the Diablo platform (the clastic source). The upper unit was, in part, deposited in a supratidal environment, as shown by the presence of abundant dolomite. In addition, the rocks of the El Paso Group were affected by various diagenetic processes, including dolomitization (supratidal dolomitization and dolomitization through meteoric mixing) and silicification, as exemplified by chert nodules and lenses and the presence of silica in intragranular voids and as intrapelmatozoan infillings. Silica partially replaced gastropods, cephalopods, and pelmatozoan ossicles. Recrystallization (aggrading neomorphism) converted carbonate muds into microspar and sparry calcite. Stylolitization (microstylolites and sutured stylolites) affected the rocks as indicated by the presence of iron oxides along the stylolites. The rocks were also affected by pyritization as shown silicified bioclasts.

  14. Ambient Concentrations of Metabolic Disrupting Chemicals and Children's Academic Achievement in El Paso, Texas.

    PubMed

    Clark-Reyna, Stephanie E; Grineski, Sara E; Collins, Timothy W

    2016-01-01

    Concerns about children's weight have steadily risen alongside the manufacture and use of myriad chemicals in the US. One class of chemicals, known as metabolic disruptors, interfere with human endocrine and metabolic functioning and are of specific concern to children's health and development. This article examines the effect of residential concentrations of metabolic disrupting chemicals on children's school performance for the first time. Census tract-level ambient concentrations for known metabolic disruptors come from the US Environmental Protection Agency's National Air Toxics Assessment. Other measures were drawn from a survey of primary caretakers of 4th and 5th grade children in El Paso Independent School District (El Paso, TX, USA). A mediation model is employed to examine two hypothetical pathways through which the ambient level of metabolic disruptors at a child's home might affect grade point average. Results indicate that concentrations of metabolic disruptors are statistically significantly associated with lower grade point averages directly and indirectly through body mass index. Findings from this study have practical implications for environmental justice research and chemical policy reform in the US. PMID:27598179

  15. Preliminary isostatic residual gravity anomaly map of Paso Robles 30 x 60 minute quadrangle, California

    USGS Publications Warehouse

    McPhee, D.K.; Langenheim, V.E.; Watt, J.T.

    2011-01-01

    This isostatic residual gravity map is part of an effort to map the three-dimensional distribution of rocks in the central California Coast Ranges and will serve as a basis for modeling the shape of basins and for determining the location and geometry of faults within the Paso Robles quadrangle. Local spatial variations in the Earth\\'s gravity field, after accounting for variations caused by elevation, terrain, and deep crustal structure reflect the distribution of densities in the mid- to upper crust. Densities often can be related to rock type, and abrupt spatial changes in density commonly mark lithological or structural boundaries. High-density rocks exposed within the central Coast Ranges include Mesozoic granitic rocks (exposed northwest of Paso Robles), Jurassic to Cretaceous marine strata of the Great Valley Sequence (exposed primarily northeast of the San Andreas fault), and Mesozoic sedimentary and volcanic rocks of the Franciscan Complex [exposed in the Santa Lucia Range and northeast of the San Andreas fault (SAF) near Parkfield, California]. Alluvial sediments and Tertiary sedimentary rocks are characterized by low densities; however, with increasing depth of burial and age, the densities of these rocks may become indistinguishable from those of older basement rocks.

  16. Resource investigation of low- and moderate-temperature geothermal areas in Paso Robles, California

    SciTech Connect

    Campion, L.F.; Chapman, R.H.; Chase, G.W.; Youngs, L.G.

    1983-01-01

    Ninety-eight geothermal wells and springs were identified and plotted, and a geologic map and cross sections were compiled. Detailed geophysical, geochemical, and geological surveys were conducted. The geological and geophysical work delineated the basement highs and trough-like depressions that can exercise control on the occurrence of the thermal waters. The Rinconada fault was also evident. Cross sections drawn from oil well logs show the sediments conforming against these basement highs and filling the depressions. It is along the locations where the sediments meet the basement highs that three natural warm springs in the area occur. Deep circulation of meteoric waters along faults seems to be a reasonable source for the warm water. The Santa Margarita, Pancho Rico, and Paso Robles Formations would be the first permeable zones that abut the faults through which water would enter. Temperatures and interpretation of well logs indicate the warmest aquifer at the base of the Paso Robles Formation. Warm water may be entering higher up in the section, but mixing with water from cooler zones seems to be evident. Geothermometry indicates reservoir temperatures could be as high as 91/sup 0/C (196/sup 0/F).

  17. The displaced eugeoclinal rocks in the El Paso Mountains and northern Mojave Desert: A Triassic sliver

    SciTech Connect

    Miller, J.S.; Glazner, A.F. . Dept. of Geology); Walker, J.D.; Martin, M.W. . Dept. of Geology)

    1993-04-01

    Many workers have drawn attention to the displaced eugeoclinal rocks in the northern Mojave Desert and El Paso Mountains and their importance in models for the development of an active continental margin in the western Cordillera. Existing models can generally for either strike-slip juxtaposition or thrust emplacement. New field data, U-Pb zircon geochronology, and isotopic data for metasedimentary rocks and plutons in the northern Mojave Desert and El Paso Mountains shed light on the timing and mechanism of emplacement of the eugeoclinal allocthon. The observations and data above indicate that Early Triassic plutons in the northern Mojave Desert came through oceanic lithosphere but later Jurassic plutons intercepted continental lithosphere. The authors suggest a model where eugeoclinal rocks were deposited on oceanic crust which was initially brought southward along a strike-slip fault and later thrust eastward over the cratonal assemblage. Permian thrusting is incompatible with their data and observations. Intrusion of lower Triassic strata by Early Triassic plutons in the Lane Mountain area permits some Early Triassic thrusting but the oceanic affinity of the plutons implies that thrusting did not involve continental lithosphere.

  18. Hydrothermal processes at Gusev Crater: An evaluation of Paso Robles class soils

    USGS Publications Warehouse

    Yen, A. S.; Morris, R.V.; Clark, B. C.; Gellert, Ralf; Knudson, A.T.; Squyres, S.; Mittlefehldt, D. W.; Ming, D. W.; Arvidson, R.; McCoy, T.; Schmidt, M.; Hurowitz, J.; Li, R.; Johnson, J. R.

    2008-01-01

    The Mars Exploration Rover Spirit analyzed multiple occurrences of sulfur-rich, light-toned soils along its traverse within Gusev Crater. These hydrated deposits are not readily apparent in images of undisturbed soil but are present at shallow depths and were exposed by the actions of the rover wheels. Referred to as 'Paso Robles' class soils, they are dominated by ferric iron sulfates, silica, and Mg-sulfates. Ca-sulfates, Ca-phosphates, and other minor phases are also indicated in certain specific samples. The chemical compositions are highly variable over both centimeter-scale distances and between the widely separated exposures, but they clearly reflect the elemental signatures of nearby rocks. The quantity of typical basaltic soil mixed into the light-toned materials prior to excavation by the rover wheels is minimal, suggesting negligible reworking of the deposits after their initial formation. The mineralogy, geochemistry, variability, association with local compositions, and geologic setting of the deposits suggest that Paso Robles class soils likely formed as hydrothermal and famarolic condensates derived from magma degassing and/ or oxidative alteration of crustal iron sulfide deposits. Their occurrence as unconsolidated, near-surface soils permits, though does not require, an age that is significantly younger than that of the surrounding rocks. Copyright 2008 by the American Geophysical Union.

  19. Meteorological simulations of ozone episode case days during the 1996 Paso del Norte ozone study

    SciTech Connect

    Brown, M.J.; Costigan, K.; Muller, C.; Wang, G.

    1999-07-01

    Meteorological simulations centered around the border cities of El Paso and Ciudad Juarez have been performed during an ozone episode that occurred on Aug. 13, 1996 during the 1996 Paso del Norte Ozone Study field campaign. Simulations were performed using the HOTMAC mesoscale meteorological model using a 1, 2, 4, and 8 km horizontal grid size nested mesh system. Investigation of the vertical structure and evolution of the atmospheric boundary layer for the Aug. 11--13 time period is emphasized in this paper. Comparison of model-produced wind speed profiles to rawinsonde and radar profiler measurements shows reasonable agreement. A persistent upper-level jet was captured in the model simulations through data assimilation. In the evening hours, the model was not able to produce the strong wind direction shear seen in the radar wind profiles. Based on virtual potential temperature profile comparisons, the model appears to correctly simulate the daytime growth of the convective mixed layer. However, the model underestimates the cooling of the surface layer at night. The authors found that the upper-level jet significantly impacted the turbulence structure of the boundary layer, leading to relatively high turbulent kinetic energy (tke) values aloft at night. The model indicates that these high tke values aloft enhance the mid-morning growth of the boundary layer. No upper-level turbulence measurements were available to verify this finding, however. Radar profiler-derived mixing heights do indicate relatively rapid morning growth of the mixed layer.

  20. Light scattering from aerosol particles in the El Paso del Norte region / the effect of humidity

    NASA Astrophysics Data System (ADS)

    Medina Calderon, Richard

    Atmospheric aerosols play an important role in climate forcing, through scattering and absorption of the incoming solar radiation. The extinction of light by the presence of atmospheric aerosols was studied using two first-principle models, and corresponding computer codes. In the first model the extinction of light from irregularly shaped aerosol particles was analyzed. In the second model it was assumed that the irregularly shaped aerosol particles were covered by a film of water, and the hygroscopicity and the extinction of light by the aerosols was analyzed. These models were then applied to the Paso del Norte region and their light extinction results compared with a local extinctiometer. The inter-comparison of the models extinction results and the extinctiometer values were well correlated. It was observed that for high humidity days the model that used an aerosol particle covered with a water film correlated better with the experimental extinctiometer measurements. While these two models were validated in the Paso del Norte region, they are also applicable to any other region, under humid or dry atmospheric conditions.

  1. Meteorological Simulations of Ozone Episode Case Days during the 1996 Paso del Norte Ozone Study

    SciTech Connect

    Brown, M.J.; Costigan, K.; Muller, C.; Wang, G.

    1999-02-01

    Meteorological simulations centered around the border cities of El Paso and Ciudad Juarez have been performed during an ozone episode that occurred on Aug. 13,1996 during the 1996 Paso del Norte Ozone Study field campaign. Simulations were petiormed using the HOTMAC mesoscale meteorological model using a 1,2,4, and 8 km horizontal grid size nested mesh system. Investigation of the vertical structure and evolution of the atmospheric boundary layer for the Aug. 11-13 time period is emphasized in this paper. Comparison of model-produced wind speed profiles to rawirisonde and radar profiler measurements shows reasonable agreement. A persistent upper-level jet was captured in the model simulations through data assimilation. In the evening hours, the model was not able to produce the strong wind direction shear seen in the radar wind profiles. Based on virtual potential temperature profile comparisons, the model appears to correctly simulate the daytime growth of the convective mixed layer. However, the model underestimates the cooling of the surface layer at night. We found that the upper-level jet significantly impacted the turbulence structure of the boundary layer, leading to relatively high turbulent kinetic energy (tke) values aloft at night. The model indicates that these high tke values aloft enhance the mid-morning growth of the boundary layer. No upper-level turbulence measurements were available to verify this finding, however. Radar profiler-derived mixing heights do indicate relatively rapid morning growth of the mixed layer.

  2. Building a "geologic Library" of the Major Lithologic Units in the EL Paso Area

    NASA Astrophysics Data System (ADS)

    Nieto, J.; Sanderson, E.; Cancellare, J.; Caskey, D. J.

    2013-12-01

    Mineralogy and Introduction to Petrology, a sophomore level course, is being offered at El Paso Community College for the first time in the spring semester, 2014. To prepare for this, several geology major students have been establishing a "Geologic Library" to include a comprehensive accumulation of material covering the major lithologic units in the El Paso area. Students associated with the Mineralogy SOLARIS project, funded by the National Science Foundation, began this summer by collecting, cutting, slabbing, and polishing rock samples, doing geochemical analyses of all samples using the microprobe, and making petrographic thin sections of each unit collected. In addition, other SOLARIS students have been taking Giga-pan photos of the outcrops where the samples were collected, and Giga-pan photos of the polished slabs. The goal of this "Geologic Library" is to put all of this information on a website, allowing students to observe each outcrop from the Giga-pans, scroll to a close-up of the polished section, link to the geochemical analysis, and then link to photomicrographs of the thin sections.

  3. Size-Time-Composition Resolved Study of Aerosols Across El Paso, Texas in Fall 2008

    NASA Astrophysics Data System (ADS)

    Cahill, T. A.; Gill, T. E.; Pingitore, N. E.; Olvera, H. A.; Clague, J. W.; Barnes, D. E.; Perry, K. D.; Li, W.; Amaya, M. A.

    2009-12-01

    Systematic variations in the absolute amounts, size and composition of airborne particulate matter (PM) across the El Paso, Texas metropolitan area may differentially impact the respiratory status (e.g., asthma) and overall health of the local population. To understand these variations, we collected size-time resolved samples of PM with DRUM samplers during a one-month period in late autumn 2008 at three sites along a NW-SE (roughly upwind-downwind) transect across El Paso’s airshed. The DRUM sampler is a rotating-drum impactor separating and collecting aerosols on Mylar strips mounted on the drums, in 8 size stages from 10 μm to <0.1 μm. DRUM strips are analyzed with 3-hr time resolution by β-gauge for mass and by synchrotron X-ray fluorescence for elemental composition. We collected samples at Santa Teresa, New Mexico (a minimally developed area NW of El Paso, at the edge of a sparsely-inhabited expanse of the Chihuahuan Desert), at the edge of the University of Texas- El Paso (UTEP) campus (in the urban core of El Paso), and at Socorro, Texas (a suburban area in the valley of the Rio Grande, SE of the urban core). Results illustrate sharp excursions in mass and element concentrations in aerosol-laden periods lasting from several hours to several days, associated with stagnant air, inversions, smoke events, dust/high wind/frontal passage, and/or daily traffic patterns, punctuated by several periods of reduced aerosol levels after Pacific frontal passages. Mass and absorption data show an increasing influence of carbonaceous (absorbing) aerosols with decreasing particle size <~1 μm, and increasing influence of mineral (scattering) aerosols with increasing particle size >~1 μm. Calcium/silicon ratios were high (>1), especially in coarser stages and during high wind events, reflecting wind erosion of the Chihuahuan Desert’s calcareous soils. Concentrations of chlorine, silicon, calcium, coarse potassium, and lead increased during high wind events, while

  4. SPRINGTIME SPATIAL CONCENTRATION GRADIENTS OF NITROGEN DIOXIDE AND VOLATILE ORGANIC SPECIES IN THE EL PASO CHILDREN'S HEALTH STUDY

    EPA Science Inventory

    Each year, over 18 million vehicles cross the international border between El Paso, TX (USA) and Ciudad Juarez (Mexico). The border traffic congestion, as well as the more typical intra-urban and interstate traffic, provide an opportunity to investigate the health effects of PM ...

  5. Harvest: A Study of 1,775 Students Who Entered El Paso Community College in the Fall of 1973.

    ERIC Educational Resources Information Center

    Anderson, Helen; Grady, Michael J.

    Harvest is a follow-up study on 1,775 students who entered El Paso Community College, Colorado Springs, Colorado for the fall 1973 term. Data through spring 1976 were analyzed. The study was undertaken to seek answers to the following questions: (1) How do students who enter with basic skills at the elementary, junior high, or high school level…

  6. "The Cutting Edge," El Paso Community College's Workplace Education Program. Final Evaluation Report for the 1993-1995 Cycle.

    ERIC Educational Resources Information Center

    Jurmo, Paul

    The report summarizes results of an evaluation of "The Cutting Edge," a workplace education program operated by El Paso Community College (Texas) with funding from the National Workplace Literacy Program. The project had tow main goals: to field test and refine curricula at a number of workplace sites, and to prepare products and services and…

  7. INTRA-URBAN GRADIENTS OF FINE PARTICULATE MATTER (PM2.5) IN THE EL PASO CHILDREN'S HEALTH STUDY

    EPA Science Inventory

    El Paso, Texas, a metropolitan area with over 500,000 residents, is located directly across the US/Mexico border from Ciudad Juarez with over 1 million residents. An estimated 18 million vehicles annually cross the international border between these two large cities. The border...

  8. Attic dust analysis approach for evaluation of heavy metal deposition in the El Paso Del Norte Region

    Technology Transfer Automated Retrieval System (TEKTRAN)

    During the 90 years from 1887 to 1977, a large smelter in the El Paso Del Norte region of North America smelted many ores including copper, lead, and zinc. In order to identify the patterns of heavy metal dispersion from the smelter, we sampled attic dust and dust from undisturbed surfaces in 15 bu...

  9. Impact of the Mexican Alien Commuter on the Apparel Industry of El Paso, Texas--A Case Study. Final Report.

    ERIC Educational Resources Information Center

    Rungeling, Brian Scott

    This study analyzed what effect commuters had on wage levels, employment, and industrial locations, and the relative importance of the commuter as part of the work force. A questionnaire was administered to 190 workers and to their 20 employers in the apparel industry of El Paso, Texas. The questionnaires revealed that the commuters were paid the…

  10. 77 FR 29629 - El Paso Natural Gas Company; Notice of Intent To Prepare an Environmental Assessment for the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-18

    ... crossing at the international boundary between the United States and Mexico in El Paso County, Texas. The... transport natural gas to a new delivery interconnect with Tarahumara Pipeline at the United States/Mexico... construction and operation of the proposed project under these general headings: Geology and soils; Land...

  11. 77 FR 47052 - El Paso Natural Gas Company; Notice of Intent To Prepare an Environmental Impact Statement for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-07

    ... a new meter station near the U.S.-Mexico border; and Construction of other appurtenant facilities. The Project would link El Paso's existing South Mainline System near Tucson to the U.S.-Mexico border... international border. The Mexico Comisi n Federal de Electricidad has specified this point as their...

  12. Application of GIS and remote sensing methods to the paleohydrography of the Paso del Norte region

    NASA Astrophysics Data System (ADS)

    Kennedy, John F.

    The purpose of this project is to use geographic information system (GIS) and remote sensing methods to investigate the paleohydrology of the Paso del Norte region during the latest pluvial event. During the research I gathered the best available geologic and hydrographic data sets and integrated these data within a GIS in order to create a digital paleohydrologic database for the region. In particular, I used the GIS to reconstruct the hydrography (i.e. streams, lakes, and watershed boundaries) that existed as a results of increased precipitation and a decrease in temperature in the recent geologic past. The existence of the pluvial lakes had an impact on ground-water and surface-water flow systems in this region. The results of my research are presented as two papers ready for peer-review publication submission and a third paper that is a previously published work. (1) Using GIS and Remote Sensing to Reconstruct Late Quaternary and Early Holocene Paleo-Hydrography Using Climate Data and Modern Topography---an Example from the Southwestern US. This paper describes the methods used to create a paleo-hydrography system for the Paso del Norte region, and the development of a water-balance equation that estimates the inputs and outputs of this system. (2) Estimating Water-Balance Equation for Playas in the Tularosa Basin of Southern New Mexico. This paper describes the calibration and testing of the GIS model presented in the first paper. Before it can be applied to paleohydrologic systems, it must be shown to reasonably approximate playa systems in the region under current conditions. Water balances were calculated for several playas and their associated drainages. (3) The Hydrogeologic Framework of Basin-Fill Aquifers and Associated Ground-water flow Systems in Southwestern New Mexico---An Overview. The paper is an overview of work done by many hydrogeologists in the Paso del Norte region; however, the primary source of most of our current knowledge is based on the

  13. Geospatial Distribution of Heavy Metals in an Urban Soil, El Paso, Texas, USA

    NASA Astrophysics Data System (ADS)

    Amaya, M. A.; Elkekli, A. R.; Clague, J. W.; Grimida, S. E.; Pingitore, N. E., Jr.

    2014-12-01

    Some 500 city blocks were selected randomly via population-based stratification. Equal volumes of soil collected from the public space (where present) in front of each house on a block yielded a composite sample. Composites provide neighborhood level "smoothing" relative to sampling many individual houses, and greatly decrease laboratory effort/cost. In the laboratory 10 g of soil were comminuted in a ceramic ball mill, mixed with cellulose/ paraffin binder, and pressed (20 tons) into a pellet. A Panalytical Epsilon5 EDS-XRF, using 8 sequential secondary target conditions and 12 NIST and USGS multi-element rock standards provided analyses. The concentration of Pb ranged from 11 to 420 ppm; Cr, 4.3 - 52 ppm; Cu, 6.5 - 390 ppm; Zn, 17 - 480 ppm; Cd, 0.4 - 12 ppm; and Sb, 2.9 - 20 ppm. High levels of all metals characterize the urban core area of El Paso, which dates to the late 19th Century. This area hosts both commercial and old residential structures, as well as major highways and a large railroad yard. There currently is, and was in the past, considerable light industry in the area. Two highly traveled highway and one railroad border crossing over the Rio Grande into contiguous Cd. Juarez (population close to 2 million) add to current and past contamination. A century-old Pb-Cu-Zn smelter, recently demolished, forms the western boundary of the urban core. Heavy metal pollution from the smelter is recognized near the former site. Its effect on the rest of the urban core is uncertain due to the current and former presence of other heavy metal sources. Aggressive post-World War II growth and expansion of El Paso into the surrounding desert, as is common in the US Southwest, placed newer housing onto more pristine land surfaces. This is reflected in generally low-to-background levels of heavy metals in these newer areas of the city. Thus there is a strong contamination and heavy metals exposure risk gradient between older and newer neighborhoods within a single city

  14. Cycling of Lead Through Soil, Air, and Household Dust in El Paso, Texas

    NASA Astrophysics Data System (ADS)

    Pingitore, N. E.; Clague, J.; Amaya, M. A.

    2008-12-01

    Elimination of leaded gasoline in the US is associated with a dramatic overall decrease in ambient lead in the environment and blood lead levels in our population. However, Pb is such a potent neurotoxin for children during the formative growth years that legislation for additional reduction of airborne lead levels is under consideration. X-ray absorption spectroscopy of a suite of samples of local (El Paso) soil, airborne particulate matter, and household dust reveals that lead humate is the dominant Pb species in these diverse environmental materials. Lead humate is a stable complex of Pb with the humus component of soil, a product of interaction between the humus and such introduced contaminant lead species as lead oxide, lead sulfate, etc. Because lead humate forms only in soil, we conclude that the source of the majority of the lead in El Paso's airborne particulate matter and household dust is local soils. Analysis of lead isotopes in selected samples is consistent with this conclusion. Re-entrainment of low-density (relative to most Pb species) humus soil particles is the apparent pathway from soil to air. Deposition of airborne particulate matter and pedal traction are the presumed mechanisms for transfer to household interiors. Reduction of airborne lead in El Paso by reducing input from its dominant local source may require extensive soil remediation, a tedious and expensive prospect. X-Ray absorption spectroscopy experiments were conducted at the Stanford Synchrotron Radiation Laboratory on beam lines 7-3, 10-2, and 11-2. Spectra were collected at the Pb L-III absorption edge in fluorescence mode using a 13-element or a 30-element Ge solid-state detector. This publication was made possible by grant numbers 1RO1-ES11367 and 1 S11 ES013339-04 from the National Institute of Environmental Health Sciences (NIEHS), NIH. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIEHS, NIH. Partial

  15. Residential Exposure to Nighttime Retained Heat in the El Paso, Texas, USA Desert Metroplex

    NASA Astrophysics Data System (ADS)

    Amaya, M. A.; Mohammed, M.; Pingitore, N. E.; Aldouri, R. K.; Benedict, B. A.

    2013-12-01

    The urban heat island is a well recognized and extensively studied phenomenon that has accelerating importance resulting from two trends associated with world-wide population growth: increasing urbanization and global warming. Urbanization, particularly when unplanned and haphazard, changes such thermal parameters as albedo, surface roughness, and heat capacities of surface materials. Rapid urbanization in the contiguous El Paso, Texas, USA - Ciudad Juarez, Chihuahua, Mexico bi-national metroplex has produced an urban heat island that is warmer than the surrounding Chihuahuan desert (temperature: 35-40 C summer; high elevation: 600-1675 m; rainfall: less than 250 mm annual). Despite the extensive literature on the urban heat island, little is known about urban nighttime land surface temperatures. We employed infrared satellite imaging to establish the variation of nighttime neighborhood surface temperatures across the city of El Paso, as well as all of El Paso County. The underlying purpose of our continuing investigation is to evaluate the geography of morbidity risk: are different neighborhoods at different risk of high nighttime temperatures. Those risks can include heat stress, and irritability and sleep deprivation, with possible resultant violence. Heat exposure at night is significant because residents are at home and 90% of El Pasoans do not have 'refrigerated' air conditioning, but instead have evaporative coolers, which are less expensive to own and operate, but are less effective since they raise the humidity of the partially cooled air. Our geographically weighted regression model showed that both day and nighttime land surface temperatures correlated with the normalized difference vegetation index, population density, and albedo. The association with the index and albedo was stronger during the daytime and with population density during the nighttime. Vegetation (negative) and population density (positive) were the dominant temperature drivers, with

  16. Karst development in the Tobosa basin (Ordovician-Devonian) strata in the El Paso border region of west Texas

    SciTech Connect

    Lemone, D.V. . Dept. of Geological Sciences)

    1993-02-01

    Karst development within the Tobosa basin strata in the El Paso border region is best displayed during two time intervals: Middle Ordovician (27 Ma) developed on the Lower Ordovician El Paso Group and Middle Silurian to Middle Devonian (40 Ma) karst developed on the Lower-Middle Fusselman Formation. These major exposure intervals are recognized in regional outcrops as well as in the subsurface of the Permian Basin where they form major reservoirs. Minor local karsting is noted also within and upon the Upper Ordovician (Montoya Group) and within the shoaling upward members of overlying the Fusselman Formation. Middle Ordovician karsting with major cavern development extends down into McKellingon Canyon Formation approximately 1,000 feet below the top of the Lower Ordovician El Paso Group. The McKellingon is overlain by the cavern roof-forming early diagenetic dolomites, lower Scenic Drive Formation which in turn is overlain by the locally karsted upper Scenic Drive and Florida Mountains formations. Collapse of the overlying Montoya Group into El Paso Group rocks is observed. The Fusselman Formation rests disconformably on the Montoya Group. It is a massive, vuggy, fine- to coarsely-crystalline, whitish dolomite. Extensive karsting has developed on the top of the Fusselman. The middle Devonian Canutillo Formation with a basal flooding deposit overlies this karst surface. Minor karsting following fracture systems extends from the major karst of the El Paso Group up into the major karst in the Fusselman. The karst seems to be following and developing along the same linear fracture systems. If so, it is not unreasonable to interpret these fracture systems as being inherited from the earlier Precambrian structures underlying them.

  17. Lung cancer mortality among residents living near the El Paso smelter.

    PubMed Central

    Rom, W N; Varley, G; Lyon, J L; Shopkow, S

    1982-01-01

    Occupational exposure to arsenic has been associated with cancer of the lung, but epidemiological studies of cancer of the lung and environmental exposure to arsenic have produced conflicting results. Case-control studies about point sources of pollution have been useful in identifying environmental hazards. This technique was used to evaluate the risk for lung cancer near a smelter in El Paso, Texas, that uses an arsenic-containing ore and has been in continuous operation since 1887. A comparison of 575 cases of lung cancer with 1490 breast and prostate controls collected from 1944 to 1973 found no significant associations with distance using 2-km concentric circles out to 20 km from the smelter. PMID:7093154

  18. EEAP lighting survey study at the Fort Bliss El Paso, Texas. Volume 1. Final report

    SciTech Connect

    1995-08-03

    This energy conservation study was performed by Huitt-Zollars Inc, for the U.S Army Engineer District (USAED), Fort Worth, under contract number DACAC63-94-D-0015. The study was conducted at Fort Bliss in El Paso, Texas, between October 31, 1994 and May 12, 1995. The site survey and data collection was performed by C.A. Pieper, P.E., Tom Luckett, Lighting Designer, and Merrel Nichols, CADD Technician. The purpose of the study was to perform a limited site survey of specific buildings at the facility, identify specific Energy Conservation Opportunities (ECOs) that exist, and then evaluate these ECOs for technical and economic feasibility. These ECOs were limited to building interior lighting and it`s effects on the heating, ventilating and air conditioning (HVAC) systems.

  19. Irregular recurrence of paleoearthquakes along the central Garlock fault near El Paso Peaks, California

    USGS Publications Warehouse

    Dawson, T.E.; McGill, S.F.; Rockwell, T.K.

    2003-01-01

    New investigations at the El Paso Peaks paleoseismic site have refined and extended the record of paleoearthquakes for the central Garlock fault. Event evidence, in the form of buried fissures, scarps, folds, and upward terminations, has allowed us to identify six well-resolved earthquakes, designated as events W, U, R, Q, K, and F, within the last ???7000 years. The exposures that we excavated did not reveal additional evidence for three poorly resolved events reported by McGill and Rockwell [1998]. Evidence for event Y, identified in the previous study, was reexamined and found not to be a paleoearthquake. Radiocarbon dates of detrital charcoal, combined with a method of interpolating the event ages with revised sedimentation rates, provide our preferred constraints on the timing of faulting events. The most recent surface-rupturing earthquake, event W, occurred between A.D. 1450 and 1640. The penultimate event U occurred between A.D. 675 and 950. Event R, which was unrecognized in the previous study, occurred between A.D. 250 and 475. Event Q occurred relatively shortly before event R, between A.D. 25 and 275. Event K occurred between 3340 and 2930 B.C. The oldest identified paleoearthquake, event F, occurred between 5300 and 4670 B.C. The event ages indicate that earthquake recurrence is highly irregular at the El Paso Peaks site, with individual preferred intervals ranging from as little as 215 years to as many as 3300 years. The irregular recurrence of surface-rupturing earthquakes along the central Garlock fault may be related to temporal and spatial clustering of earthquakes proposed for faults in the Eastern California Shear Zone.

  20. Providing Bridges from 2YC to 4YC in the El Paso Region

    NASA Astrophysics Data System (ADS)

    Doser, D. I.; Villalobos, J. I.

    2012-12-01

    For the past ~3 years the University of Texas at El Paso (UTEP) has been working closely with El Paso Community College (EPCC) to help ease the transfer of geoscience and environmental science students between our institutions. We have initiated a number of activities to accomplish this including: articulation of degree programs to build a 2+2 transfer plan, review of introductory course content, cross-institution research projects with EPCC students and co-sponsored student research symposiums. One of the most successful activities has been our cross-institutional research projects that involve either individual students working with a UTEP undergraduate/UTEP faculty member team or EPCC classes that join UTEP classes for some aspect of field work or project. The EPCC students gain confidence in their ability to succeed by working with UTEP students and finding out that they are as capable of engaging in and completing research as their 4YC peers. They also have an opportunity to meet UTEP professors first as mentors and professional colleagues rather than in a classroom setting. The research symposium serves as an excellent venue for showcasing their research to the EPCC and UTEP community, as well as interacting with local and out of town professionals who serve as judges for the research presentations. Feedback provided by the judges assists students in refining their presentations for out of town professional meetings. The first students participating in the research program are graduating from UTEP in the summer and fall of 2012. Many EPCC students involved in research have obtained summer internships in industry, the public sector or at other academic institutions, some even prior to attending UTEP. Several have received competitive scholarships. The greatest challenges to the research program include finding UTEP faculty who are willing to work with EPCC students and financial support for the students during their research activities. The greatest challenges

  1. Infrasound from the El Paso super-bolide of October 9, 1997

    SciTech Connect

    ReVelle, D.O.; Whitaker, R.W.; Armstrong, W.T.

    1998-12-31

    During the noon hour on October 9, 1997 an extremely bright fireball ({approx}-21.5 in stellar magnitude putting it into the class of a super-bolide) was observed over western Texas with visual sightings from as far away as Arizona to northern Mexico and even in northern New Mexico over 300 miles away. This event produced tremendously loud sonic boom reports in the El Paso area. It was also detected locally by 4 seismometers which are part of a network of 5 seismic stations operated by the University of Texas at El Paso (UTEP). Subsequent investigations of the data from the six infrasound arrays used by LANL (Los Alamos National Laboratory) and operated for the DOE (Department of Energy) as a part of the CTB (Comprehensive Test Ban) Research and Development program for the IMS (International Monitoring System) showed the presence of an infrasonic signal from the proper direction at the correct time for this super-bolide from two of the six arrays. Both the seismic and infrasound recordings indicated that an explosion occurred in the atmosphere at source heights from 28--30 km, having its epicenter slightly to the northeast of Horizon City, Texas. The signal characteristics, analyzed from {approx}0.1 to 5.0 Hz, include a total duration of {approx}4 min (at Los Alamos, LA) to >{approx}5 min at Lajitas, Texas, TXAR, another CTB IMS array operated by E. Herrin at Southern Methodist University (SMU) for a source directed from LA toward {approx}171--180 deg and from TXAR of {approx}321-4 deg respectively from true north. The observed signal trace velocities (for the part of the recording with the highest cross-correlation) at LA ranged from 300--360 m/sec with a signal velocity of 0.30 {+-} 0.03 km/sec, implying a Stratospheric (S Type) ducted path. The dominant signal frequency at LA was from 0.20 to 0.80 Hz, with a peak near 0.3 Hz. These highly correlated signals at LA had a very large, peak to peak, maximum amplitude of 21.0 microbars (2.1 Pa). The analysis, using

  2. Confirmation and investigation of higher science curiosity in Juarez Middle School students compared to their peers in El Paso, Texas

    NASA Astrophysics Data System (ADS)

    Carmona Miranda, Karla

    In the last 20 years attitudes towards science and science classes in K-12 education have been an important topic of investigation due to the decreasing number of students choosing Science, Technology, Engineering and Math (STEM) related careers, and the increasing need for STEM prepared workers to cover the job demands of the future. The purpose of this study is to confirm a previously measured difference in scientific curiosity between middle school students in El Paso and in Ciudad Juarez, and to collect additional data that might tell us what the possible factors or reasons for this difference are. Our sample consists of 156 middle school students from Juarez public schools, and 448 middle school students from El Paso public middle schools. The Children's Science Curiosity Scale of Harty & Beall (1984) will be used to measure the curiosity level. Additionally, the students will be asked to respond to "Why do you like or dislike science?" Our results show that those obtained by Ortiz (2006) in a similar study persist but with a reduction of standard deviations. The percentage of students that state that they do not like science in Ciudad Juarez and El Paso are 9% and 14%, respectively. The most common reason to like science among students in Ciudad Juarez was related to the topics covered in class, and among students in El Paso was related to the experiments and hands-on activities done in class. After analyzing contingency tables with chi-squared tests and calculating the respective contingency coefficients, it is safe to say that even though relationships between the reasons to like or dislike science and country exist, these relationships are not strong. Other results, limitations, and future research also are discussed.

  3. The 1996 and 1997 Paso del Norte ozone studies: An overview of the field studies and data analyses

    SciTech Connect

    MacDonald, C.P.; Roberts, P.T.; Main, H.H.; Dye, T.S.; Coe, D.L.; Yarbrough, J.

    1999-07-01

    This paper summarizes the measurement campaigns of the 1996 and 1997 Paso del Norte Ozone Studies, the resultant data sets, and the findings and conclusions that arose from subsequent data analyses. The purpose of these data analyses was to develop an understanding of the significant chemical and physical processes that lead to high concentrations of ozone in the Paso del Norte study region which includes El Paso, TX; Sunland Park, NM; and Juarez, Mexico. High ozone concentrations resulted from a combination of conditions, including slow convective boundary layer (CBL) growth, reduced CBL depth, light surface winds, and high concentrations of ozone precursor at ground level in the morning. Synoptic-scale meteorological conditions observed during high ozone episodes included an upstream aloft high-pressure system, and aloft warming. Aloft carryover of ozone and ozone precursors did not significantly contribute to the surface ozone concentration. Furthermore, hydrocarbon and NO{sub x} data, although spatially limited, showed that the system is more often NO{sub x}-limited rather than VOC-limited.

  4. Sensitivity Modeling Study for an Ozone Occurrence during the 1996 Paso Del Norte Ozone Campaign

    PubMed Central

    Lu, Duanjun; Reddy, Remata S.; Fitzgerald, Rosa; Stockwell, William R.; Williams, Quinton L.; Tchounwou, Paul B.

    2008-01-01

    Surface ozone pollution has been a persistent environmental problem in the US and Europe as well as the developing countries. A key prerequisite to find effective alternatives to meeting an ozone air quality standard is to understand the importance of local anthropogenic emissions, the significance of biogenic emissions, and the contribution of long-range transport. In this study, an air quality modeling system that includes chemistry and transport, CMAQ, an emission processing model, SMOKE, and a mesoscale numerical meteorological model, WRF, has been applied to investigate an ozone event occurring during the period of the 1996 Paso del Norte Ozone Campaign. The results show that the modeling system exhibits the capability to simulate this high ozone occurrence by providing a comparable temporal variation of surface ozone concentration at one station and to capture the spatial evolution of the event. Several sensitivity tests were also conducted to identify the contributions to high surface ozone concentration from eight VOC subspecies, biogenic VOCs, anthropogenic VOCs and long-range transportation of ozone and its precursors. It is found that the reductions of ETH, ISOP, PAR, OLE and FORM help to mitigate the surface ozone concentration, and like anthropogenic VOCs, biogenic VOC plays a nonnegligible role in ozone formation. But for this case, long-range transport of ozone and its precursors appears to produce an insignificant contribution. PMID:19190351

  5. Spatial variability of unpaved road dust PM10 emission factors near El Paso, Texas.

    PubMed

    Kuhns, Hampden; Gillies, John; Etyemezian, Vicken; Dubois, David; Ahonen, Sean; Nikolic, Djordje; Durham, Clyde

    2005-01-01

    The testing re-entrained aerosol kinetic emissions from roads technique is compared with distance-based emission factors (EFs; g/VKT) measured downwind of a dirt road by using towers instrumented with real-time meteorological and particle sensors at multiple heights. The emission potential (EP), defined as the EF divided by the vehicle speed (m/sec), and weight index permits the intercomparison of emissions from multiple roadways surveyed by the TRAKER vehicle. A survey of 72 km of unpaved roads on the Ft. Bliss Military Base near El Paso, Texas, indicated that 60% of all measured EPs fell between 6.7 (g/VKT)/(m/sec) and 9.6 (g/VKT)/(m/sec). The EP measured across the base was approximately 50% lower than those collected in the vicinity of the instrumented towers. This implies that EFs measured for other vehicles on the same test section should be reduced by 50% to more accurately represent EFs for the entire military base. Using geographic information system-based soil maps, the inferred EFs are related to differences in soil types over the survey area. Variations among five different soil types accounted for <10% of variation in EP. Individual measurements using the testing re-entrained aerosol kinetic emissions from roads technique did show larger spatial variations in EP; however, these were not effectively captured by the soil classifications, partly because of the comparatively coarse spatial classification used in the soil survey data. PMID:15704535

  6. Yard flooding by irrigation canals increased the risk of West Nile disease in El Paso, Texas

    PubMed Central

    Cardenas, Victor M.; Jaime, Javier; Ford, Paula B.; Gonzalez, Fernando J.; Carrillo, Irma; Gallegos, Jorge E.; Watts, Douglas M.

    2011-01-01

    Purpose To investigate the effects of use of water from irrigation canals to flood residential yards on the risk of West Nile disease in El Paso, Texas. Methods West Nile disease confirmed cases in 2009–2010 were compared with a random sample of 50 residents of the county according to access to and use of water from irrigation canals by subjects or their neighbors, as well as geo-referenced closest distance between their home address and the nearest irrigation canal. A windshield survey of 600 meters around the study subjects’ home address recorded the presence of irrigation canals. The distance from the residence of 182 confirmed cases of West Nile disease reported in 2003–2010 to canals was compared to that of the centroids of 182 blocks selected at random. Results Cases were more likely than controls to report their neighbors flooded their yards with water from canals. Irrigation canals were more often observed in neighborhoods of cases than of controls. Using the set of addresses of 182 confirmed cases and 182 hypothetic controls the authors found a statistically significant inverse relation with risk of West Nile disease. Conclusions Flooding of yards with water from canals increased the risk of West Nile disease. PMID:21943648

  7. The geologic structure of part of the southern Franklin Mountains, El Paso County, Texas

    SciTech Connect

    Smith, W.R.; Julian, F.E. . Dept. of Geosciences)

    1993-02-01

    The Franklin Mountains are a west tilted fault block mountain range which extends northwards from the city of El Paso, Texas. Geologic mapping in the southern portion of the Franklin Mountains has revealed many previously unrecognized structural complexities. Three large high-angle faults define the boundaries of map. Twenty lithologic units are present in the field area, including the southernmost Precambrian meta-sedimentary rocks in the Franklin Mountains (Lanoria Quartzite and Thunderbird group conglomerates). The area is dominated by Precambrian igneous rocks and lower Paleozoic carbonates, but Cenozoic ( ) intrusions are also recognized. Thin sections and rock slabs were used to describe and identify many of the lithologic units. The Franklin Mountains are often referred to as a simple fault block mountain range related to the Rio Grande Rift. Three critical regions within the study area show that these mountains contain structural complexities. In critical area one, Precambrian granites and rhyolites are structurally juxtaposed, and several faults bisecting the area affect the Precambrian/Paleozoic fault contact. Critical area two contains multiple NNW-trending faults, three sills and a possible landslide. This area also shows depositional features related to an island of Precambrian rock exposed during deposition of the lower Paleozoic rocks. Critical area three contains numerous small faults which generally trend NNE. They appear to be splays off of one of the major faults bounding the area. Cenozoic kaolinite sills and mafic intrusion have filled many of the fault zones.

  8. Hydrologic interpretation of geophysical data from the southeastern Hueco Bolson, El Paso, and Hudspeth Counties, Texas

    USGS Publications Warehouse

    Gates, Joseph Spencer; Stanley, W.D.

    1976-01-01

    Airborne-electromagnetic and earth-resistivity surveys were used to explore for fresh ground water in the Hueco Bolson southeast of El Paso, Texas. Aerial surveys were made along about 500 miles of flight line, and 67 resistivity soundings were made along 110 miles of profile. The surveys did not indicate the presence of any large bodies of fresh ground water, but several areas may be underlain by small to moderate amounts of fresh to slightly saline water. The material underlying the flood plain of the Rio Grande is predominantly clay or sand of low resistivity. Along a band on the mesa next to and parallel to the flood plain, more resistive material composed partly of deposits of an ancient river channel extends to depths of about 400 to 1,700 feet. Locally, the lower part of this more resistive material is saturated with fresh to slightly saline water. The largest body of fresh to slightly saline ground water detected is between Fabens and Tornillo, Texas, mostly in the sandhill area between the flood plain and the mesa. Under assumed conditions, the total amount of water in storage may be as much as 400,000 to 800,000 acre-feet. The resistivity data indicate that the deep artesian zone southwest of Fabens extends from a depth of about 1,200 feet to about 2,800 feet. (Woodard-USGS)

  9. Reconstruction and operation of the El Paso Solar Pond with a geosynthetic clay liner system

    SciTech Connect

    Lu, H.; Swift, A.H.P.

    1996-12-31

    After the original XR-5 membrane liner failed in 1992, the El Paso Solar Pond was reconstructed and operated with a geosynthetic clay liner (GCL) system. The solar pond is approximately 3,000 m{sup 2} in surface area, and 3.2 meters deep with a 15{degree} side-wall slope. A new heat extraction system includes 15-cm (6-inch) rubber hoses and two redesigned polypropylene diffusers. A new automated instrumentation system was developed for monitoring pond status. It uses a newly developed scanner combined with a computer for both position control and data logging. The salinity gradient was established using a new scanning method, as opposed to the previously used fixed point method. Fresh water was injected into brine through a newly designed PVC bar shaped diffuser, which scans automatically within preset regions. After two months, the pond bottom reached 80 C and heat extraction began. The performance of the GCL system, characterized by its hydraulic conductivity, has been monitored, and generates the first full scale, elevated temperature data for a GCL system. Preliminary hydraulic conductivity data indicate values comparable with other clay liner systems.

  10. Minority Universities Systems Engineering (MUSE) Program at the University of Texas at El Paso

    NASA Technical Reports Server (NTRS)

    Robbins, Mary Clare; Usevitch, Bryan; Starks, Scott A.

    1997-01-01

    In 1995, The University of Texas at El Paso (UTEP) responded to the suggestion of NASA Jet Propulsion Laboratory (NASA JPL) to form a consortium comprised of California State University at Los Angeles (CSULA), North Carolina Agricultural and Technical University (NCAT), and UTEP from which developed the Minority Universities Systems Engineering (MUSE) Program. The mission of this consortium is to develop a unique position for minority universities in providing the nation's future system architects and engineers as well as enhance JPL's system design capability. The goals of this collaboration include the development of a system engineering curriculum which includes hands-on project engineering and design experiences. UTEP is in a unique position to take full advantage of this program since UTEP has been named a Model Institution for Excellence (MIE) by the National Science Foundation. The purpose of MIE is to produce leaders in Science, Math, and Engineering. Furthermore, UTEP has also been selected as the site for two new centers including the Pan American Center for Earth and Environmental Sciences (PACES) directed by Dr. Scott Starks and the FAST Center for Structural Integrity of Aerospace Systems directed by Dr. Roberto Osegueda. The UTEP MUSE Program operates under the auspices of the PACES Center.

  11. The DOE infrastructure support program at the University of Texas at El Paso. Final report

    SciTech Connect

    1998-11-01

    The University of Texas at El Paso (UTEP) is located on 300 acres, only a few hundred years from the US/Mexico border. The DOE Infrastructure Support Program was initiated at UTEP in 1987. The purpose of the program was to assist the University in building the infrastructure required for its emerging role as a regional center for energy-related research. Equally important was the need to strength the University`s ability to complete for sponsored energy-related programs at the state and national levels and to provide opportunities for faculty, staff and students to participate in energy-related research and outreach activities. The program had four major objectives, as follows: (1) implement energy research, outreach and demonstration projects already funded, and prepare new proposals to fund university research interests; (2) establish an Energy Center as a separate operational entity to provide continuing infrastructure support for energy-related programs; (3) strengthen university/private sector energy research linkages; and (4) involve minority graduate and undergraduate students in energy research and outreach activities. Each of the above objectives has been exceeded substantially, and, as a consequence, the University has become a regional leader in energy and environmental research and outreach efforts.

  12. Attic Dust Analysis Approach for Evaluation of Heavy Metal Deposition on the El Paso Del Norte Region

    NASA Astrophysics Data System (ADS)

    Shekhter, E. G.; van Pelt, S.; Pannell, K.; Gill, T. E.; Barnes, M. A.

    2010-12-01

    The El Paso del Norte region in the United States is a region of complex topography that is the home to more than 2 million people who share the same air. A large non-ferrous smelter (primary lead-copper smelter),owned by the American Smelting and Refining Company (ASARCO), was functioning in the Rio Grande River valley on the west side of the Franklin Mountains that divide the city of El Paso and across the river from Juarez, Mexico’s largest city on the United States border. During the more than 100 years of operation, beginning in 1887, the ASARCO smelter emissions considerably deteriorated the already complex environmental condition on the US-Mexican border. In order to identify the sources and patterns of heavy metal dispersion, we used an attic dust analyses approach which has not been previously been applied in this area. Undisturbed attic dust can provide an integrated history of atmospheric loading of particulates emanating from geological, biological and anthropogenic sources and can help to reconstruct the air pollution history on a local scale. We sampled attic dust and dust from undisturbed surfaces in 15 buildings of varying ages from three neighborhoods in the cities of El Paso and Juarez. The dust samples and samples of unpolluted buried soil horizons in the area were extracted with aqua regia and analyzed by ICP-AES and ICP-MS. Enrichment ratios (ER) were calculated by dividing the concentration of a trace metal in the attic dust by the mean concentration of the same element in the buried soil horizons. Mean ER for Pb were 263.3, 95.4, and 70.2 for dust collected in a neighborhood near the smelter, downtown Juarez, and an El Paso neighborhood on the other side of the Franklin Mountains from the smelter. Greater ER for As, Cd, Zn, Sb, and Cu followed the same trends, by neighborhood, noted for Pb. In addition, dust collected from attics surfaces (pipes, ducts, storage containers) post-dating smelter disclosure had lower ER for the trace metals

  13. Solute Sources and Budget for the Rio Grande above El Paso, Texas

    NASA Astrophysics Data System (ADS)

    Hogan, J. F.; Phillips, F. M.; Hendrickx, J. M.

    2001-12-01

    Issues of water quality, especially salinity, limit the use of water resources from the Rio Grande. Identification and quantification of salinity sources is critical for improved river management. In the headwater region salts are typically derived from atmospheric deposition and chemical weathering reactions. Salinity increases during transit may result from both natural (saline groundwater, hydrothermal springs and dissolution of evaporite deposits) and anthropogenic (agricultural return flow and wastewater from sewage treatment plants) sources. These increases are magnified by evapotranspiration (this includes evaporation from open water, transpiration from irrigated agriculture and transpiration from natural riparian areas). With multiple salinity sources and evapotranspiration acting simultaneously, understanding the solute balance for the Rio Grande at a level needed for improved river management is difficult. We have conducted synoptic sampling of the Rio Grande from the headwaters in Colorado to south of El Paso, Texas. Sampling was conducted in January and August of 2000 and 2001. The total dissolved solids content (TDS) of the Rio Grande increases from < 50 mg/L in headwater regions of Colorado to > 2000 mg/L south of El Paso, Texas. The Cl/Br (wt/wt) ratio for river water increases from ~50 in the headwaters (typical for atmospheric deposition) to ~700 in the lower basin. This increase in Cl/Br ratio demonstrates the importance of additional salinity sources. Three end-members are recognized using Cl/Br mixing plots for winter samples: atmospheric deposition, a hydrothermal end-member localized around Truth of Consequences, NM, and a third end-member that may represent groundwater. Samples collected during the summer months are shifted off the winter mixing lines indicating concentration through ET. Increases in salinity were not a simple function of distance downriver, but rather occurred in a series of steps. Some of these steps are correlated with

  14. Modeling particle number concentrations along Interstate 10 in El Paso, Texas.

    PubMed

    Olvera, Hector A; Jimenez, Omar; Provencio-Vasquez, Elias

    2014-12-01

    Annual average daily particle number concentrations around a highway were estimated with an atmospheric dispersion model and a land use regression model. The dispersion model was used to estimate particle concentrations along Interstate 10 at 98 locations within El Paso, Texas. This model employed annual averaged wind speed and annual average daily traffic counts as inputs. A land use regression model with vehicle kilometers traveled as the predictor variable was used to estimate local background concentrations away from the highway to adjust the near-highway concentration estimates. Estimated particle number concentrations ranged between 9.8 × 10(3) particles/cc and 1.3 × 10(5) particles/cc, and averaged 2.5 × 10(4) particles/cc (SE 421.0). Estimates were compared against values measured at seven sites located along I10 throughout the region. The average fractional error was 6% and ranged between -1% and -13% across sites. The largest bias of -13% was observed at a semi-rural site where traffic was lowest. The average bias amongst urban sites was 5%. The accuracy of the estimates depended primarily on the emission factor and the adjustment to local background conditions. An emission factor of 1.63 × 10(14) particles/veh-km was based on a value proposed in the literature and adjusted with local measurements. The integration of the two modeling techniques ensured that the particle number concentrations estimates captured the impact of traffic along both the highway and arterial roadways. The performance and economical aspects of the two modeling techniques used in this study shows that producing particle concentration surfaces along major roadways would be feasible in urban regions where traffic and meteorological data are readily available. PMID:25313294

  15. EEAP lighting survey study at the Fort Bliss, El Paso, Texas. Volume I. Final report

    SciTech Connect

    1995-08-03

    This energy conservation study was performed by Huitt-Zollars Inc, for the U.S. Army Engineer District (USAED), Fort Worth, under contract number DACAC63-94-D-0015. The study was conducted at Fort Bliss in El Paso, Texas, between October 31, 1994 and May 12, 1995. The site survey and data collection was performed by C.A. Pieper, P.E., Tom Luckett, Lighting Designer, and Merrel Nichols, CADD Technician. The purpose of the study was to perform a limited site survey of specific buildings at the facility, identify specific Energy Conservation Opportunities (ECOs) that exist, and then evaluate these ECOs for technical and economic feasibility. These ECOs were limited to building interior lighting and it`s effects on the heating, ventilating and air conditioning (HVAC) systems. This survey was conducted with the assistance of many persons at the facility. Special thanks are extended to all of them, including the following individuals: (1) Mr. Joe Mathis, Energy Coordinator; (2) Mr. Raymond Balderos, Utilities Sales Clerk; and (3) Mr. Louis Arenas, Electrical Maintenance Supervisor. Any questions concerning this report should be directed to the Project Manager, C.A. Pieper, P.E., at Huitt-Zollars Inc., 512 Main Street, Suite 1300, Fort Worth, Texas 76102. Phone 817-335-3000. This study was conducted on a total of 132 buildings at Fort Bliss. Of this total number of buildings, there were 52 unique building types. All of the other buildings were duplicates of one of these unique buildings. A complete description of all buildings studied is provided on page 9. The total building area covered in this study was 1,818,828 sq ft. Base Year Energy Consumption: The total metered electrical and gas consumptions for 12 consecutive months, prior to this study, were obtained from the facility and are referred to as the base year`.

  16. Modeling particle number concentrations along Interstate 10 in El Paso, Texas

    PubMed Central

    Olvera, Hector A.; Jimenez, Omar; Provencio-Vasquez, Elias

    2014-01-01

    Annual average daily particle number concentrations around a highway were estimated with an atmospheric dispersion model and a land use regression model. The dispersion model was used to estimate particle concentrations along Interstate 10 at 98 locations within El Paso, Texas. This model employed annual averaged wind speed and annual average daily traffic counts as inputs. A land use regression model with vehicle kilometers traveled as the predictor variable was used to estimate local background concentrations away from the highway to adjust the near-highway concentration estimates. Estimated particle number concentrations ranged between 9.8 × 103 particles/cc and 1.3 × 105 particles/cc, and averaged 2.5 × 104 particles/cc (SE 421.0). Estimates were compared against values measured at seven sites located along I10 throughout the region. The average fractional error was 6% and ranged between -1% and -13% across sites. The largest bias of -13% was observed at a semi-rural site where traffic was lowest. The average bias amongst urban sites was 5%. The accuracy of the estimates depended primarily on the emission factor and the adjustment to local background conditions. An emission factor of 1.63 × 1014 particles/veh-km was based on a value proposed in the literature and adjusted with local measurements. The integration of the two modeling techniques ensured that the particle number concentrations estimates captured the impact of traffic along both the highway and arterial roadways. The performance and economical aspects of the two modeling techniques used in this study shows that producing particle concentration surfaces along major roadways would be feasible in urban regions where traffic and meteorological data are readily available. PMID:25313294

  17. Characterization of ambient particulate matter in the Paso del Norte region

    SciTech Connect

    Li, W.W.; Currey, R.M.; Valenzuela, V.H.; Meuzelaar, H.L.C.; Sheya, S.A.; Anderson, J.R.; Banerjee, S.; Griffin, J.B.

    1999-07-01

    Air pollution in the Paso del Norte region, where West Texas abuts the southern boundary of New Mexico and the northern boundary of Chihuahua, Mexico is a common concern to the residents on both sides of the border. Parts of the region fail to meet the US and Mexican Ambient Air Quality Standards for particulate matter, ozone, and carbon monoxide. The regional air pollution problem is complicated due to arid climate, complex terrain topography, frequently occurring temperature inversions, extensive unpaved urban areas, an aging and poorly maintained vehicle fleet, and a number of other uncontrolled anthropogenic emission sources. The issue is further complicated by concerns arising from recent scientific evidence of the health effects associated with exposures to fine particulate matter. A study designed to address particulate matter (PM) air pollution problems in the region is currently undertaken by researchers from member universities of the Southwest Center for Environmental Research and Policy and several governmental agencies. The study attempts to (1) characterize the fine fraction of PM; (2) identify and characterize the major regional emission sources; (3) apportion the fine fraction of PM to the source emissions; and (4) establish a regional technological information clearinghouse. The short-term goal of this research is to initiate a research program to characterize, identify, and quantify the sources and nature of the PM in the region. The long-term goal of this study is to establish regional research capabilities to continue air quality monitoring, evaluation, modeling, and control after the implementation of the study. A scoping study to collect regional PM was conducted in December 1998.

  18. Environmental Assessment of EL Paso's Upper and Lower Valley Canal Systems Using Tree Ring Analysis

    NASA Astrophysics Data System (ADS)

    Garcia, S.; Espinosa, S.

    2012-12-01

    Dendrochronology, or tree-ring dating, is the science of dating of past environmental events or climatic changes utilizing tree ring growth patterns. The width of the rings of certain species of trees (i.e. Populus fremontii) are dependent on regional precipitation levels or the abundance of local water sources. Therefore thick rings are produced during wet years and, inversely, narrow rings during dry years. This growth can also be affected by, and date, such factors as slope gradient, soil properties, temperature and snow accumulation. The more a tree's rate of growth has been limited by such environmental factors, the more variation in ring to ring growth will be present and the higher probability of dating such factors. Trees showing a lack of ring width variability rings have generally constant environmental or climatic conditions and indicate that no environmental or climatic changes have occurred. Our study will examine the tree ring of the Rio Grande Cottonwood (Populus fremontii), due to its short life span, rapid growth, and wide spread occurrence in our proposed study area. Our study area will encompass sites along the Rio Grande, canals and residential areas in El Paso County. Our first goal will be to investigate the possibility of identifying environmental contaminants stored within various xylem tissue members of the tree rings and ascertaining dates and regional concentrations of heavy metals and therefore identifying possible sources of contamination. The second goal will be to use dendrochronology to identify and date any growth stress or impedance due to the effects of over pumping, canal lining, and flood control methods in the study area.

  19. Modeling particle number concentrations along Interstate 10 in El Paso, Texas

    NASA Astrophysics Data System (ADS)

    Olvera, Hector A.; Jimenez, Omar; Provencio-Vasquez, Elias

    2014-12-01

    Annual average daily particle number concentrations around a highway were estimated with an atmospheric dispersion model and a land use regression model. The dispersion model was used to estimate particle concentrations along Interstate 10 at 98 locations within El Paso, Texas. This model employed annual averaged wind speed and annual average daily traffic counts as inputs. A land use regression model with vehicle kilometers traveled as the predictor variable was used to estimate local background concentrations away from the highway to adjust the near-highway concentration estimates. Estimated particle number concentrations ranged between 9.8 × 103 particles/cc and 1.3 × 105 particles/cc, and averaged 2.5 × 104 particles/cc (SE 421.0). Estimates were compared against values measured at seven sites located along I10 throughout the region. The average fractional error was 6% and ranged between -1% and -13% across sites. The largest bias of -13% was observed at a semi-rural site where traffic was lowest. The average bias amongst urban sites was 5%. The accuracy of the estimates depended primarily on the emission factor and the adjustment to local background conditions. An emission factor of 1.63 × 1014 particles/veh-km was based on a value proposed in the literature and adjusted with local measurements. The integration of the two modeling techniques ensured that the particle number concentrations estimates captured the impact of traffic along both the highway and arterial roadways. The performance and economical aspects of the two modeling techniques used in this study shows that producing particle concentration surfaces along major roadways would be feasible in urban regions where traffic and meteorological data are readily available.

  20. Influence of deposit architecture on intrastratal deformation, slope deposits of the Tres Pasos Formation, Chile

    NASA Astrophysics Data System (ADS)

    Auchter, Neal C.; Romans, Brian W.; Hubbard, Stephen M.

    2016-07-01

    Slope sediments on passive and active margins deform and fail across a broad range of scales ranging from loading and sediment remobilization near the sediment-water interface to submarine landslides and mass movements that incorporate significant volumes of slope deposits. Deformational styles are characterized by updip extension and downdip compressional features that occur above a detachment surface. Conditions for failure and deformation include the presence of weak layer(s) that serve as a detachment surface, competency contrasts that allow for detachment and downslope movement, deformation above a detachment surface, and a triggering mechanism(s) that initiates failure. Slope failure processes and products are well documented at scales resolvable by seismic-reflection surveys and in instances of extensive downslope failure, but the processes and products associated with intermediate-scale slope deformation are poorly understood. Intrastratal deformation is defined as stratigraphically isolated zones of deformation bounded above and below by concordant and undeformed strata. In this study, outcrop examples of intrastratal deformation from the Upper Cretaceous Tres Pasos Formation are used to elucidate the influence of depositional architecture on slope deformation. The facies distribution associated with compensational stacking of lobe deposits is shown to have a first-order control on the location and style of deformation. Detachment planes that form in mudstone deposits associated with lobe fringe and interlobe deposits are spatially limited and deformation is restricted to interbedded sandstone and mudstone associated with off-axial lobe positions. Downslope translation was arrested by stratigraphic buttresses associated with more sandstone-prone axial deposits. Emplacement of a regionally extensive mass transport deposit is interpreted as the triggering mechanism for contemporaneous intrastratal deformation of > 60 m of underlying stratigraphy. A vertical

  1. Evidence for long-term impact of Pasos Adelante: using a community-wide survey to evaluate chronic disease risk modification in prior program participants.

    PubMed

    Carvajal, Scott C; Miesfeld, Noelle; Chang, Jean; Reinschmidt, Kerstin M; de Zapien, Jill Guernsey; Fernandez, Maria L; Rosales, Cecilia; Staten, Lisa K

    2013-10-01

    Effective community-level chronic disease prevention is critical to population health within developed and developing nations. Pasos Adelante is a preventive intervention that aims to reduce chronic disease risk with evidence of effectiveness in US-Mexico residing, Mexican origin, participants. This intervention and related ones also implemented with community health workers have been shown to improve clinical, behavioral and quality of life indicators; though most evidence is from shorter-term evaluations and/or lack comparison groups. The current study examines the impact of this program using secondary data collected in the community 3-6 years after all participants completed the program. A proportional household survey (N = 708) was used that included 48 respondents who indicated they had participated in Pasos. Using propensity score matching to account for differences in program participants versus other community residents (the program targeted those with diabetes and associated risk factors), 148 natural controls were identified for 37 matched Pasos participants. Testing a range of behavioral and clinical indicators of chronic disease risk, logistic regression models accounting for selection bias showed two significant findings; Pasos participants were more physically active and drank less whole milk. These findings add to the evidence of the effectiveness of Pasos Adalente and related interventions in reducing chronic disease risk in Mexican-origin populations, and illustrate the use of innovative techniques for using secondary, community-level data to complement prior evaluation research. PMID:24084678

  2. Third-order sequences and parasequence stacking patterns of Lower Ordovician platform carbonates of the El Paso Group, Franklin Mountains, west Texas

    SciTech Connect

    Goldhammer, R.K.; Lehmann, P.J.; Dunn, P.A. )

    1991-03-01

    The Lower Ordovician passive margin succession of the Franklin Mountains is represented by the second-order Sauk C supersequence set consisting of the Bliss Sandstone and the overlying El Paso Group. The Bliss marks the second order basal lowstand-transgressive phase and the El Paso Group records the second-order highstand. The El Paso Group contains several third-order depositional sequences, which in this updip, shelfal position lack internal stratal geometries along dip. Thus, sequences and systems tracts are identified solely on the basis of the vertical stacking patterns of depositional subfacies and high frequency, fifth-order parasequences. 'Fischer plots' of high-frequency parasequences gauge systematic shifts in third-order accommodation of two complete third-order sequences within the Arenigian portion of the El Paso Group. This is expressed in the vertical succession of parasequence types, systematic changes in parasequence thicknesses, plus variations in subfacies as revealed by histograms of subfacies types tied to 'Fischer plots.' A complete El Paso shelfal sequence contains a thin lowstand (LST) of quartzarenite, a thick transgressive systems tract (TST) dominated by upward-thickening, thrombolitic subtidal parasequences, and a highstand systems tract (HST) marked by dolomitic, thinning-upward peritidal parasequences containing admixed quartz sand. The authors have investigated the mechanics of third-order sequence formation and contrasted allocyclic models with autocyclic models for high-frequency parasequence formation through 1-D and 2-D forward modeling.

  3. Public health surveillance using emergency medical service logs - U.S.--Mexico land border, El Paso, Texas, 2009.

    PubMed

    2010-06-01

    In 2008, approximately 358 million travelers entered the United States, of whom 206 million arrived via land ports of entry (POEs) on the U.S.--Mexico border. Effective response to infectious diseases of public health importance among travelers requires timely identification and reporting to state and federal health authorities. Currently, notifications are made primarily by U.S. Customs and Border Protection (CBP) officers to CDC quarantine stations. However, CBP personnel have competing priorities and limited public health training.To evaluate the utility of monitoring emergency medical service (EMS) dispatch and response logs for ill travelers with symptoms or signs suggestive of infectious diseases, CDC screened medical records of patients transported by EMS during 2009 from the four POEs in El Paso, Texas. The screening was conducted using commercial software that monitors EMS logs and sends alerts in real time based on preestablished criteria (i.e., records containing keywords suggesting infectious diseases). Records that met the criteria were forwarded to El Paso Quarantine Station personnel and reviewed within 24 hours. If a reportable infectious disease was suspected, the final diagnosis was requested from the receiving hospital.This report summarizes the results of the evaluation, which found that, of 50,779 EMS responses in the city of El Paso, 455 (0.9%) records met alert criteria, 86 (0.2%) needed diagnostic confirmation, and nine (<0.1%) were for reportable infectious diseases. Monitoring EMS logs can enhance detection of travelers with serious infections at POEs but requires additional screening and follow-up by CDC. PMID:20520588

  4. Research Experience for Undergraduate and Early College High School Students at University of Texas at El Paso

    NASA Astrophysics Data System (ADS)

    Medrano, Omar; Gonzalez, E.; Mason, P. A.

    2014-01-01

    A program of astrophysics research, education, and outreach to high school students recently developed at the University of Texas at El Paso (UTEP) is described. Undergraduate students engage in observational research at McDonald Observatory, using the 2.1 and 2.7-m telescopes. An observational astronomy laboratory was developed for undergraduate majors. In addition, UTEP physics majors mentored area early-college high school students for hundreds of hours of summer research experience. UTEP and UT-Austin are partner institutions and this program is funded by NSF grant 0958783.

  5. El Paso Electric Company Diablo Substation to the US-Mexico border 115kV transmission line project. Final Environmental Assessment

    SciTech Connect

    Not Available

    1992-04-01

    This Environmental Assessment documents the analysis of alternative corridors for development and operation of a proposed 115 kilovolt transmission line using private lands and transporting power to the US-Mexico international border. The project will require (1) an amendment to El Paso Electric Company`s existing export authorization to transfer power across this border, and (2) a Presidential Permit for construction of the transmission line. The project would be located in Dona Ana county in southern New Mexico, approximately five miles west of El Paso, Texas. The alternative corridors, specific locations within those corridors, and structure types are identified and analyzed in the environmental studies.

  6. Utilizing geophysical methods for asessment and characterization of canal seepage in El Paso's lower valley irrigation delivery systems

    NASA Astrophysics Data System (ADS)

    Cegon, Amanda Brooke

    El Paso County Water Improvement District No. 1 (EPCWID No.1) delivers the Rio Grande water for agricultural production and urban uses through numerous networked irrigation canals. Of the nearly 86 billion gallons of water released annually for irrigation uses in Texas, billions are lost due to evaporation and seepage in unlined canals with 56 million gallons of the billions are lost in Franklin Canal annually due to improper lining and sediment variation of the canals. To characterize seepage patterns and identify areas of high seepage, Electrical Resistivity, Ground Truthing via soil sample analysis were used along three, half-mile long sectioned canals during irrigation and non-irrigation seasons. The data lines acquired were processed in EARTHIMAGER 2D to create 2D vertical resistivity inversion profiles to locate potential areas of high seepage/high resistivity. The research results will help El Paso County Water Improvement District No. 1 to develop management strategies to conserve water and improve the delivery efficiency systems which leads to economic growth in the Rio Grande Basin.

  7. The effect of urban canopy parameterizations on mesoscale meteorological model simulations in the Paso del Norte area

    SciTech Connect

    Brown, M.J.; Williams, M.D.

    1997-04-01

    Since mesoscale numerical models do not have the spatial resolution to directly simulate the fluid dynamics and thermodynamics in and around urban structures, urban canopy parameterizations are sometimes used to approximate the drag, heating, and enhanced turbulent kinetic energy (tke) produced by the sub-grid scale urban elements. In this paper, we investigate the effect of the urban canopy parameterizations used in the HOTMAC mesoscale meteorological model by turning the parameterizations on and off. The model simulations were performed in the Paso del Norte region, which includes the cities of El Paso and Ciudad Juarez, the Franklin and Sierra Juarez mountains, and the Rio Grande. The metropolitan area is surrounded by relatively barren scrubland and is intersected by strips of vegetation along the Rio Grande. Results indicate that the urban canopy parameterizations do affect the mesoscale flow field, reducing the magnitude of wind speed and changing the magnitude of the sensible heat flux and tke in the metropolitan area. A nighttime heat island and a daytime cool island exist when urban canopy parameters are turned on, but associated recirculation flows are not readily apparent. Model-computed solar, net, and longwave radiation values look reasonable, agreeing for the most part with published measurements.

  8. Hydrogeological characterization of a bank filtration experiment site at the Rio Grande, El Paso, Texas, USA

    NASA Astrophysics Data System (ADS)

    Langford, R.; Schulze-Makuch, D.; Pillai, S.; Abdel-Fattah, A.; Widmer, K.

    2003-04-01

    An experiment site was constructed along an artificial channel of the Rio Grande in El Paso, Texas. The experiment was funded by the EPA and is designed to measure the effectiveness of bank filtration in an arid environment. Regionally, the experiment is important because of the hundreds of thousands of people drinking water from shallow wells drilled in close proximity to septic systems. A pumping well was drilled 17 meters from the stream bank and screened from 3.5 to 8 m depth. A cruciform array of observation wells with several multilevel completions allows detection of downstream and vertical movement of water as well as flow from the stream to the well. All of the wells were continuously cored during drilling. Analysis of the cores reveals that the site consists of two stacked channels filled with sand deposited from the meandering Rio Grande. A grid of ground-penetrating radar lines provided three-dimensional coverage between wells and showed bedding to 6.5 m depth. Constant head hydraulic conductivities show that the aquifer consists of two more permeable units separated by the less permeable upper fill of the lower channel complex, with vertical hydraulic conductivities of (1x10-6 to 2x10-6 m/s?). The intervals above and below this interval have the highest vertical conductivities (up to 3.5x10-5 m/s). A multiple pumping and tracer test was conducted using the cruciform array of the field site that consisted of a pumping well, 16 observation wells, and a stream sampling point. The average hydraulic conductivity of the geological media at the field site was about 2 x 10-3 m/s based on pumping test analysis. However, the type curve responses revealed significant heterogeneity of hydraulic conductivity throughout the field site. For the tracer test, bromide and microspheres were used as tracers. Microspheres were used to mimic the behavior of Giardia and Cryptosporidium. The tracers (bromide and microspheres of different sizes and colors) were injected in one

  9. ADVERSE IMPACT OF HOME DAMPNESS AND LENGTH OF RESIDENCE ON ATOPY AND LUNG FUNCTION AMONG CHILDREN IN EL PASO, TEXAS, USA

    EPA Science Inventory

    The El Paso Children's Health Study examined ambient exposures to motor vehicle emissions and their effect on the prevalence of allergy and asthma among children living in a major United States-Mexico border city. In the spring of 2001, the parents of all fourth and fifth grad...

  10. DEVELOPMENT OF A BI-NATIONAL GROUNDWATER MANAGEMENT MODEL TO PROVIDE FOR A SUSTAINABLE WATER SUPPLY WITHIN THE EL PASO / CIUDAD JUAREZ REGION

    EPA Science Inventory

    The El Paso/Juarez region is the largest metropolitan area along the United States /Mexico border. The area is in need of a long-term water management plan to include groundwater and surface water, due to the scarcity of fresh groundwater and because it has a population growt...

  11. Nutrition Knowledge Predicts Eating Behavior of All Food Groups "except" Fruits and Vegetables among Adults in the Paso del Norte Region: Que Sabrosa Vida

    ERIC Educational Resources Information Center

    Sharma, Shreela V.; Gernand, Alison D.; Day, R. Sue

    2008-01-01

    Objective: To examine the association between nutrition knowledge and eating behavior in a predominantly Mexican American population on the Texas-Mexico border. Design: Cross-sectional using data from the baseline survey of the Que Sabrosa Vida community nutrition initiative. Setting: El Paso and surrounding counties in Texas. Participants: Data…

  12. Short-scale variability of the SCLM beneath the extra-Andean back-arc (Paso de Indios, Argentina): Evidence from spinel-facies mantle xenoliths

    NASA Astrophysics Data System (ADS)

    Ponce, Alexis D.; Bertotto, Gustavo W.; Zanetti, Alberto; Brunelli, Daniele; Giovanardi, Tommaso; Aragón, Eugenio; Bernardi, Mauro I.; Hémond, Christophe; Mazzucchelli, Maurizio

    2015-10-01

    Cenozoic basalts carrying ultramafic mantle xenoliths occur in the Matilde, León and Chenque hills in the Paso de Indios region, Argentina. The mantle xenoliths from the Chenque and León hills mainly present porphyroclastic textures, whereas the Matilde hill xenoliths have coarse-grained to porphyroclastic textures. The equilibrium temperatures are in the range of 780 to 940ºC, indicating a provenance from shallow sectors of the lithospheric mantle column that were subjected to a relatively low heat ffiux at Cenozoic Era. According to the modal compositions of xenoliths, the mantle beneath Matilde and León hills was affected by greater than 22% partial melting, while less depleted peridotites occur in the Chenque suite (starting from 10% partial melting). Such an observation is confirmed by the partial melting estimates based on Cr#Sp, which vary from 8 to 14% for the selected Chenque samples and from 14 to 18% for the Matilde ones. The common melting trend is overlapped by small-scale cross cutting local trends that may have been generated by open-system processes, such as open-system partial melting and/or post partial-melting metasomatic migration of exotic Na-Cr-rich melts. The two main mineralogical reaction schemes are: i) the dissolution of pyroxenes and the segregation of new olivine in olivine-rich peridotites, and ii) the replacement of primary olivine by orthopyroxene±clinopyroxene in orthopyroxene-rich peridotites. These were produced by channelled and/or pervasive melt extraction/ migration. Enhanced pyroxene dissolution is attributed to channelling of silica- undersaturated melts, whereas the replacement of primary olivine by orthopyroxene±clinopyroxene points to reaction with silica-saturated melts. Late disequilibrium reactions identified in the xenoliths comprise: the breakdown of orthopyroxene in contact with the host basalt, and (rarely) reaction coronae on orthopyroxene, clinopyroxene and spinel linked to glassy veins. Such features are

  13. Aryl hydrocarbon receptor-mediated activity of particulate organic matter from the Paso del Norte airshed along the U.S.-Mexico border.

    PubMed Central

    Arrieta, Daniel E; Ontiveros, Cynthia C; Li, Wen-Whai; Garcia, Jose H; Denison, Michael S; McDonald, Jacob D; Burchiel, Scott W; Washburn, Barbara Shayne

    2003-01-01

    In this study, we determined the biologic activity of dichloromethane-extracted particulate matter < 10 micro m in aerodynamic diameter (PM10) obtained from filters at three sites in the Paso del Norte airshed, which includes El Paso, Texas, USA; Juarez, Chihuahua, Mexico, and Sunland Park, New Mexico, USA. The extracts were rich in polycyclic aromatic hydrocarbons (PAHs) and had significant biologic activity, measured using two in vitro assay systems: ethoxyresorufin-(O-deethylase (EROD) induction and the aryl hydrocarbon-receptor luciferase reporter system. In most cases, both EROD (5.25 pmol/min/mg protein) and luciferase activities (994 relative light units/mg) were highest in extracts from the Advance site located in an industrial neighborhood in Juarez. These values represented 58% and 55%, respectively, of induction associated with 1 micro M ss-naphthoflavone exposures. In contrast, little activity was observed at the Northeast Clinic site in El Paso, the reference site. In most cases, luciferase and EROD activity from extracts collected from the Tillman Health Center site, situated in downtown El Paso, fell between those observed at the other two sites. Overall, a statistically significant correlation existed between PM10 and EROD and luciferase activities. Chemical analysis of extracts collected from the Advance site demonstrated that concentrations of most PAHs were higher than those reported in most other metropolitan areas in the United States. Calculations made with these data suggest a cancer risk of 5-12 cases per 100,000 people. This risk estimate, as well as comparisons with the work of other investigators, raises concern regarding the potential for adverse health effects to the residents of this airshed. Further work is needed to understand the sources, exposure, and effects of PM10 and particulate organic material in the Paso del Norte airshed. PMID:12896850

  14. Organic petrology of Paleocene Marcelina Formation coals, Paso Diablo mine, western Venezuela: Tectonic controls on coal type

    USGS Publications Warehouse

    Hackley, P.C.; Martinez, M.

    2007-01-01

    About 7??Mt of high volatile bituminous coal are produced annually from the four coal zones of the Upper Paleocene Marcelina Formation at the Paso Diablo open-pit mine of western Venezuela. As part of an ongoing coal quality study, we have characterized twenty-two coal channel samples from the mine using organic petrology techniques. Samples also were analyzed for proximate-ultimate parameters, forms of sulfur, free swelling index, ash fusion temperatures, and calorific value. Six of the samples represent incremental benches across the 12-13??m thick No. 4 bed, the stratigraphically lowest mined coal, which is also mined at the 10??km distant Mina Norte open-pit. Organic content of the No. 4 bed indicates an upward increase of woody vegetation and/or greater preservation of organic material throughout the life of the original mire(s). An upward increase in telovitrinite and corresponding decrease in detrovitrinite and inertinite illustrate this trend. In contrast, stratigraphically higher coal groups generally exhibit a 'dulling upward' trend. The generally high inertinite content, and low ash yield and sulfur content, suggest that the Paso Diablo coals were deposited in rain-fed raised mires, protected from clastic input and subjected to frequent oxidation and/or moisture stress. However, the two thinnest coal beds (both 0.7??m thick) are each characterized by lower inertinite and higher telovitrinite content relative to the rest of Paso Diablo coal beds, indicative of less well-established raised mire environments prior to drowning. Foreland basin Paleocene coals of western Venezuela, including the Paso Diablo deposit and time-correlative coal deposits of the Ta??chira and Me??rida Andes, are characterized by high inertinite and consistently lower ash and sulfur relative to Eocene and younger coals of the area. We interpret these age-delimited coal quality characteristics to be due to water availability as a function of the tectonic control of subsidence rate. It

  15. Implementation of InTeGrate Modules into Introductory Courses in the El Paso Higher Education Community

    NASA Astrophysics Data System (ADS)

    Doser, D. I.; Villalobos, J. I.; Henry, I. E.

    2014-12-01

    InTeGrate (Interdisciplinary Teaching about Earth for a Sustainable Future) has developed teaching modules that focus on Earth sustainability and Earth-centered societal issues. We have begun to implement modules on climate change, earth materials and freshwater into introductory geology and environmental science courses taught at the University of Texas at El Paso (UTEP), El Paso Community College (EPCC) and local early college high schools (ECHS) for classes of 20 to 220 students. Our eventual goal is to insure students taking introductory classes at any institution will be exposed to comparable content and be similarly prepared for advanced courses. Our initial results suggest that the modules' use of case studies and analysis of authentic data sets are very appealing to our student body (over 70% Hispanic). Since many students do not speak English at home, they were challenged by vocabulary presented in some modules. Modules containing glossaries and extensive background material (such as concept maps and annotated figures) proved very helpful to these students. The use of pre-activity quizzes insured that the students had mastered basic concepts needed for in-class activities. Modifications required to teach these modules in larger classes included condensing materials and reducing the amount of color figures to save paper and printer costs, streamlining dissemination/collection of in-class group assignments, and adapting assignments such as jigsaws and gallery walks to the confines of a large lecture hall with fixed seating. Student reflections indicated students were able to make connections to societal issues and retain these ideas through the end of the courses.

  16. Unique seismic controlled sources: Using the demolition of smelter tower stacks and the City Hall in El Paso,TX for a seismic survey

    NASA Astrophysics Data System (ADS)

    Montana, C. J.; Gonzalez-Huizar, H.; Kaip, G.; Velasco, A. A.

    2013-12-01

    On April 13, 2013 the city of El Paso, TX demolished two old smelter smoke stacks leftover from the smelting days of ASARCO and the following day, demolished the City Hall building. These two events provided a unique opportunity to utilize two complex (demolition of two smoke stack towers plus a sequence of explosions at source site 1 and a sequence of explosions and the demolition of a building at source site 2) seismic sources to provide information about the uppermost subsurface of the surrounding areas of the City of El Paso. We deployed an array of 46 seismographs (Reftek Texans) connected to 4 Hz geophones along 3 survey lines: a NW to SE line extending from the ASARCO smokestacks site through City Hall and extending to a station location near the border (providing a revered profile); a W to E line extending from the ASARCO smoke stack location towards an end point in central El Paso; and a SSW to NNE line from City Hall towards a station location adjacent to the Franklin Mountains Mountain Range. The maximum source to receiver offset is over 5 km. The seismographs where deployed in an urban setting resulting in a challenging deployment in terms of security and integrity of the instruments. The recording mode was set to continuous from several hours before the stacks demolition to several hours after the City Hall building demolition. The data acquired is rich with many phases recorded. The main towers impact is clearly recorded along the length of all lines even though it was at the longest offset. The City Hall demolition site is located at a more central position that made it easier to be recorded. The complexity of the sources will require extensive signal processing to separate and determine specific phases. We will be using the line to develop a preliminary 2-D velocity model, which will be used to identify any faults and other geological structures buried beneath the deep river sediments near downtown El Paso.

  17. Soil-borne polycyclic aromatic hydrocarbons in El Paso, Texas: Analysis of a potential problem in the United States/Mexico border region

    PubMed Central

    De La Torre-Roche, Roberto J.; Lee, Wen-Yee; Campos-Díaz, Sandra I.

    2009-01-01

    Ultrasonic extraction followed by Stir Bar Sorptive Extraction (SBSE) and thermal desorption inline coupled with Gas Chromatography and Mass Spectrometry (TD/GC/MS)was used to perform a comprehensive determination of soil-borne polycyclic aromatic hydrocarbons (PAHs) in El Paso, Texas. The method provided good sensitivity and faster processing time for the analysis. The total PAHs in El Paso soil ranged from 0.1 to 2225.5 µg kg−1. Although the majority of PAH concentrations did not exceed the soil screening levels regulated by the United States Environmental Protection Agency, the existence of PAHs in this ecosystem is ubiquitous. Naphthalene were found in 100% of the soil samples; while the heavy PAHs (five- and six-ring) were not often detected and mostly remained in closer proximity to industrial areas and major traffic points. The results ruled out the possibility of petroleum refining as the significant source of local soil-borne PAH contamination, but they suggested that the PAHs found in El Paso soil were closely linked to human activities and possible other industrial processes. PMID:18768257

  18. Soil-borne polycyclic aromatic hydrocarbons in El Paso, Texas: analysis of a potential problem in the United States/Mexico border region.

    PubMed

    De La Torre-Roche, Roberto J; Lee, Wen-Yee; Campos-Díaz, Sandra I

    2009-04-30

    Ultrasonic extraction followed by Stir Bar Sorptive Extraction (SBSE) and thermal desorption inline coupled with Gas Chromatography and Mass Spectrometry (TD/GC/MS) was used to perform a comprehensive determination of soil-borne polycyclic aromatic hydrocarbons (PAHs) in El Paso, Texas. The method provided good sensitivity and faster processing time for the analysis. The total PAHs in El Paso soil ranged from 0.1 to 2225.5 microg kg(-1). Although the majority of PAH concentrations did not exceed the soil screening levels regulated by the United States Environmental Protection Agency, the existence of PAHs in this ecosystem is ubiquitous. Naphthalene were found in 100% of the soil samples; while the heavy PAHs (five- and six-ring) were not often detected and mostly remained in closer proximity to industrial areas and major traffic points. The results ruled out the possibility of petroleum refining as the significant source of local soil-borne PAH contamination, but they suggested that the PAHs found in El Paso soil were closely linked to human activities and possible other industrial processes. PMID:18768257

  19. Retrieval of the single scattering albedo in the El Paso-Juarez Airshed using the TUV model and a UV-MFRSR radiometer

    NASA Astrophysics Data System (ADS)

    Medina, Richard; Fitzgerald, Rosa M.; Min, Qilong

    2012-01-01

    A methodology to retrieve Single Scattering Albedo (SSA) values employing the ratio of Direct to Diffuse Irradiances (DDR) is used and applied to the El Paso-Juarez Airshed, a challenging region where air masses interact. The TUV model was used to obtain the calculated DDR irradiances, and the experimental irradiances were obtained from a UV-MFRSR instrument located in the city of El Paso, Texas. The wavelengths used were 332 nm and 368 nm. The retrieved SSA values at both 332 nm and 368 nm were higher in a lightly polluted day (0.66-0.81 at 332 nm, and 0.61 to 0.80 at 368 nm) than in a heavier polluted day (0.56-0.70 at 332 nm and 0.53-0.66 at 368 nm). A sensitivity study of the ground albedo and the asymmetry parameter was performed, which indicated that the variation of the asymmetry parameter is a secondary effect in the retrievals of SSA. In addition, the variation of SSA values during the day was also analyzed for the El Paso-Juarez Airshed and linked to the flow of air masses into the region using HYSPLIT trajectories. A presence of absorptive aerosols was observed during the late morning and the middle of the day. This methodology can be applied in any area, and is particularly useful for cities that experience episodes of high PM concentrations.

  20. Metabolic syndrome associated with Ischemic Stroke among the Mexican Hispanic Population in the El Paso/Border Region

    PubMed Central

    Osborn, Michael F; Miller, Charles C; Badr, Ahmed; Zhang, Jun

    2014-01-01

    The Hispanic population caries a disproportionate burden of stroke compared to the non-Hispanic White population. Most studies have been conducted on Caribbean Hispanics, indicating a need to better understand the characteristics of stroke and its prevalence among the Hispanic populations of Mexican descent. In this report, data were collected in the El Paso/US-Mexico border region, where 82% of the population is Mexican Hispanic, through a retrospective study of ischemic stroke from 2005 to 2010. Odds ratios (OR), 95% confidence intervals (CI), logistic regression and multivariate analysis of the odds ratios adjusted for other variables, were used to analyze the effects of various risk factors on ischemic stroke. The metabolic syndrome and its components, specifically hypertension, diabetes, and dyslipidemia appeared to be strongly associated with ischemic stroke in the Mexican Hispanic population. Mexican Hispanic ischemic stroke patients were nearly seven times more likely to have this syndrome, compared to Mexican Hispanic controls from the National Health and Nutrition Examination Survey. Likewise, the patients were nearly forty times more likely to have hypertension and eleven times more likely to have diabetes. Efforts to prevent ischemic stroke and limit its impact in the Mexican Hispanic population should focus on controlling hypertension and diabetes. PMID:24548371

  1. Dento-alveolar lesions and palaeodietary inferences from the Paso Alsina 1 site (eastern Pampean-Patagonian transition, Argentina).

    PubMed

    Flensborg, G

    2011-10-01

    Several archaeological researches in northeastern Patagonia and southeastern Pampas have evaluated various indicators of the diets of hunter-gatherers who inhabited these regions during the Late Holocene, including the role of plant foods. Dental analysis is an important way to introduce new information about subsistence. In this sense, the objective of this work is to document and interpret dento-alveolar lesions in an osteological sample recovered from the Paso Alsina 1 archaeological site (eastern Pampean-Patagonian transition, Argentina). This paper will explore the oral health status of individuals and discuss palaeodietary information of hunter-gatherers that inhabited the lower valley of the Colorado River during the final Late Holocene (ca. 500 years BP). The site is defined as a formal area bundle composed of 10 secondary multiple burials containing 56 individuals of both sexes and various ages (e.g., perinatal, infant, and adult). In this study, 781 teeth and 1036 alveoli from 47 maxillae and 38 mandibles were analysed from 51 adult individuals. The results indicate a moderate rate of dental wear, and dental calculus, and low percentages of caries, abscesses, and antemortem tooth loss. The information obtained suggests a diet based on a combination of proteins, fat and carbohydrates. Results are then compared with those from other lines of analysis for the study area and for the neighboring regions (northeastern Patagonia and southeastern Pampas). PMID:21924417

  2. Comparison of two carbonate mound sequences in the Lower Ordovician El Paso Formation, west Texas and southern New Mexico

    SciTech Connect

    Clemons, R.E.

    1985-01-01

    The El Paso Formations consists of four members, in ascending order: Hitt Canyon, Jose McKelligon and Padre. Mounds in the McKelligon Member exposed in the southern Franklin Mountains were described by Toomey (1970). Most of these mounds are small but one large one is 5.8 m thick and about 13.7 m long in outcrop. The mound rock is chiefly bioclastic wackestone with minor packstone and boundstone. The varied fauna contains echinoderms, sponges and spicules, gastropods, trilobites, digitate algae, Nuia, Girvanella, Pulchrilamina, Calathium, and minor brachiopods and cephalopods. Intraclastic, bioclastic grainstone fills channels cut in the mounds. Similar, but smaller and less spectacular mounds occur in the McKelligon Member in the Florida, Big Hatchet, and Caballo Mountains, Lone Mountain, Cooke's Range, and elsewhere in southwestern New Mexico. A second type of mound is common in the upper part of the Hitt Canyon Member in the Cooke's Range, Red Hills, Caballo and Big Hatchet Mountains. These mounds also are typically small but one in the Red Hills is 13.7 m thick and about 30 m long in outcrop. The mound complex is about 75-80% SH-C and LLH-C stromatolite boundstone and bioclastic wackestone. The remaining 20-25% is bioclastic packstone and grainstone between the SH-C stromatolites and filling channels cut in the mound complex. The limited fauna contains small fragments of echinoderms, gastropods, trilobites, spicules, and Nuia.

  3. Organic geochemical investigation and coal-bed methane characteristics of the Guasare coals (Paso Diablo mine, western Venezuela)

    USGS Publications Warehouse

    Quintero, K.; Martinez, M.; Hackley, P.; Marquez, G.; Garban, G.; Esteves, I.; Escobar, M.

    2011-01-01

    The aim of this work was to carry out a geochemical study of channel samples collected from six coal beds in the Marcelina Formation (Zulia State, western Venezuela) and to determine experimentally the gas content of the coals from the Paso Diablo mine. Organic geochemical analyses by gas chromatography-mass spectrometry and isotopic analyses on-line in coalbed gas samples were performed. The results suggest that the Guasare coals were deposited in a continental environment under highly dysoxic and low salinity conditions. The non-detection of 18??(H)-oleanane does not preclude that the organic facies that gave rise to the coals were dominated by angiosperms. In addition, the presence of the sesquiterpenoid cadalene may indicate the subordinate contribution of gymnosperms (conifers) in the Paleocene Guasare mire. The average coalbed gas content obtained was 0.6 cm3/g. ??13C and D values indicate that thermogenic gas is prevalent in the studied coals. Copyright ?? Taylor & Francis Group, LLC.

  4. Applications of particle-tracking techniques to bank infiltration: a case study from El Paso, Texas, USA

    NASA Astrophysics Data System (ADS)

    Abdel-Fattah, Ahmad; Langford, Richard; Schulze-Makuch, Dirk

    2008-08-01

    This paper presents results of a small scale study that utilized particle-tracking techniques to evaluate transport of river water through an alluvial aquifer in a bank infiltration testing site in El Paso, Texas, USA. The particle-tracking survey was used to better define filtration parameters. Several simulations were generated to allow visualization of the effects of well placement and pumping rate on flow paths, travel time, the size of the pumping influence zone, and proportion of river-derived water and groundwater mixing in the pumping well. Simulations indicate that migration of river water into the aquifer is generally slow. Most water does not arrive at the well by the end of an 18-day pumping period at 0.54 m3/min pumping rate for a well located 18 m from the river. Forty-four percent of the water pumped from the well was river water. The models provided important information needed to design appropriate sampling schedules for bank filtration practices and ensured meeting adequate soil-retention times. The pumping rate has more effect on river water travel time than the location of the pumping well from the river. The examples presented in this paper indicate that operating the pumping well at a doubled distance from the river increased the time required for the water to travel to the well, but did not greatly change the capture zone.

  5. Utilizing Continuous Resistivity Profiling for Assessment and Characterization of Canal Seepage in El Paso's Lower Valley Irrigation Network System

    NASA Astrophysics Data System (ADS)

    Brown, W. A.; Sheng, Z.

    2009-12-01

    Annually, billions of gallons of water are lost through seepage along sections of the irrigation network. To conserve water, El Paso County Water Improvement District has been assessing seepage losses and investigating measures for reducing such losses. Resistivity techniques were used to identify areas of high seepage and provide information on locations along canals that need to be structurally modified in an effort to curb water lost through seepage. Several half mile sections were selected along canals with varying seepage rates to conduct electric resistivity surveys in order generate soil profiles during the non-irrigation and irrigation seasons. Two different multiple channel resistivity meters (The“OhmMapper and the Super Sting R8”) were used, which both allow a vertical resistivity profile to be collected using a single current transmission. The results presented are preliminary and we believe that upon completion findings will serve multiple purposes. Firstly, a better understanding of seepage patterns, seepage rate and its spatial variation can be obtained. Secondly, our findings could be used to produce geological profiles associated with seepage areas which will enable the irrigation district to develop guidelines for improving delivery efficiency, especially during drought. And thirdly, our results will be transferable to other areas of the state and will have a positive impact on the environment and the overall quality of life.

  6. Fluid‐driven seismicity response of the Rinconada fault near Paso Robles, California, to the 2003 M 6.5 San Simeon earthquake

    USGS Publications Warehouse

    Hardebeck, Jeanne L.

    2012-01-01

    The 2003 M 6.5 San Simeon, California, earthquake caused significant damage in the city of Paso Robles and a persistent cluster of aftershocks close to Paso Robles near the Rinconada fault. Given the importance of secondary aftershock triggering in sequences of large events, a concern is whether this cluster of events could trigger another damaging earthquake near Paso Robles. An epidemic‐type aftershock sequence (ETAS) model is fit to the Rinconada seismicity, and multiple realizations indicate a 0.36% probability of at least one M≥6.0 earthquake during the next 30 years. However, this probability estimate is only as good as the projection into the future of the ETAS model. There is evidence that the seismicity may be influenced by fluid pressure changes, which cannot be forecasted using ETAS. The strongest evidence for fluids is the delay between the San Simeon mainshock and a high rate of seismicity in mid to late 2004. This delay can be explained as having been caused by a pore pressure decrease due to an undrained response to the coseismic dilatation, followed by increased pore pressure during the return to equilibrium. Seismicity migration along the fault also suggests fluid involvement, although the migration is too slow to be consistent with pore pressure diffusion. All other evidence, including focal mechanisms and b‐value, is consistent with tectonic earthquakes. This suggests a model where the role of fluid pressure changes is limited to the first seven months, while the fluid pressure equilibrates. The ETAS modeling adequately fits the events after July 2004 when the pore pressure stabilizes. The ETAS models imply that while the probability of a damaging earthquake on the Rinconada fault has approximately doubled due to the San Simeon earthquake, the absolute probability remains low.

  7. Seroprevalence of select bloodborne pathogens and associated risk behaviors among injection drug users in the Paso del Norte region of the United States – Mexico border

    PubMed Central

    Baumbach, Joan P; Foster, Lily N; Mueller, Mark; Cruz, Michelle Firestone; Arbona, Sonia; Melville, Sharon; Ramos, Rebeca; Strathdee, Steffanie A

    2008-01-01

    Background The region situated where the borders of Mexico, Texas and New Mexico meet is known as 'Paso del Norte'. The Paso del Norte Collaborative was formed to study the seroprevalence of select pathogens and associated risk behaviors among injection drug users (IDUs) in the region. Methods Respondent-driven sampling (RDS) was used: 459 IDU participants included 204 from Mexico; 155 from Texas; and 100 from New Mexico. Each of the three sites used a standardized questionnaire that was verbally administered and testing was performed for select bloodborne infections. Results Participants were mostly male (87.4%) and Hispanic/Latino (84.7%) whose median age was 38. In Mexico, Texas and New Mexico, respectively: hepatitis B virus (HBV) was seen in 88.3%, 48.6% and 59.6% of participants; hepatitis C virus (HCV) in 98.7%, 76.4% and 80.0%; human immunodeficiency virus (HIV) in 2.1%, 10.0% and 1.0%; and syphilis in 4.0%, 9.9% and 3.0%. Heroin was the drug injected most often. More IDUs in New Mexico were aware of and used needle exchange programs compared with Texas and Mexico. Conclusion There was mixed success using RDS: it was more successfully applied after establishing good working relationships with IDU populations. Study findings included similarities and distinctions between the three sites that will be used to inform prevention interventions. PMID:19014605

  8. Urban development under extreme hydrologic and weather conditions for El Paso-Juarez: Recommendations resulting from hydrologic modeling, GIS, and remote sensing analyses

    NASA Astrophysics Data System (ADS)

    Barud-Zubillaga, Alberto

    During the 2006 El Paso-Juarez flood there were many concerns regarding the capability of the existing stormwater system to handle 50- and 100-year flood events in El Paso, Texas and Juarez, Mexico area. Moreover in 2008, a considerable wet year from the normal 223 mm of annual precipitation for El Paso demonstrated that the area could very well received large amounts of precipitation at localized areas in short periods of time, representing a great flood threat to residents living in areas prone to flood. Some climate change projections for the area are exactly what had occurred over the last two decades; an increased number of torrential rainstorms over smaller concentrated pieces of land separated by longer years of drought between rainstorms. This study consisted in three projects focused on three critical regions within the El Paso-Juarez area that were greatly affected by the 2006 Flood. The goal was to identify if natural arroyos or the existent built stormwater system, could properly managed the projected precipitation patterns. The three projects described in this dissertation touch on the following points: (a) the importance of a reliable precipitation model that could accurately describes precipitation patterns in the region under extreme drought and wet climates conditions; (b) differences in land use/land cover characteristics as factors promoting or disrupting the possibility for flooding, and (c) limitations and capabilities of existent stormwater systems and natural arroyos as means to control flooding. Conclusions and recommendations are shown below, which apply not only to each particular project, but also to all study areas and similar areas in the El Paso-Juarez region. Urbanization can improve or worsen a pre-existing natural stormwater system if built under its required capacity. Such capacity should be calculated considering extreme weather conditions, based on a denser network of precipitation stations to capture the various microclimates

  9. The Role of Social Factors in the Successful Adjustment of Mexican-American Families to Forced Housing Relocation: A Final Report of the Chamizal Relocation Research Project, El Paso, Texas.

    ERIC Educational Resources Information Center

    Stoddard, Ellwyn R.

    Since 1,155 families living in the Chamizal area of El Paso were forced to relocate after the 1963 signing of the Chamizal Treaty, this report represents a 5-year post-relocation study of 80 of the Mexican American families. The report provides a description of the Chamizal residents, their attitudes and reactions to the relocation process, and…

  10. Application of a stream-aquifer model to Monument Creek for development of a method to estimate transit losses for reusable water, El Paso County, Colorado

    USGS Publications Warehouse

    Kuhn, Gerhard; Arnold, L. Rick

    2006-01-01

    The U.S. Geological Survey, in cooperation with Colorado Springs Utilities, the Colorado Water Conservation Board, and the El Paso County Water Authority, began a study in 2004 to (1) apply a stream-aquifer model to Monument Creek, (2) use the results of the modeling to develop a transit-loss accounting program for Monument Creek, (3) revise the existing transit-loss accounting program for Fountain Creek to incorporate new water-management strategies and allow for incorporation of future changes in water-management strategies, and (4) integrate the two accounting programs into a single program with a Web-based user interface. The purpose of this report is to present the results of applying a stream-aquifer model to the Monument Creek study reach. More...