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Volatile organic compounds at two oil and natural gas production well pads in Colorado and Texas using passive samplers.
Eisele, Adam P; Mukerjee, Shaibal; Smith, Luther A; Thoma, Eben D; Whitaker, Donald A; Oliver, Karen D; Wu, Tai; Colon, Maribel; Alston, Lillian; Cousett, Tamira A; Miller, Michael C; Smith, Donald M; Stallings, Casson.
Afiliação
  • Eisele AP; a U.S. Environmental Protection Agency , Region 8, Denver , Colorado , USA.
  • Mukerjee S; b U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park , North Carolina , USA.
  • Smith LA; c Alion Science and Technology , Durham , North Carolina , USA.
  • Thoma ED; d U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory Research Triangle Park , North Carolina , USA.
  • Whitaker DA; b U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park , North Carolina , USA.
  • Oliver KD; b U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park , North Carolina , USA.
  • Wu T; d U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory Research Triangle Park , North Carolina , USA.
  • Colon M; b U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park , North Carolina , USA.
  • Alston L; b U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park , North Carolina , USA.
  • Cousett TA; e Senior Environmental Employment Program, Research Triangle Park , North Carolina , USA.
  • Miller MC; c Alion Science and Technology , Durham , North Carolina , USA.
  • Smith DM; f U.S. Environmental Protection Agency , Region 6, Dallas , Texas , USA.
  • Stallings C; f U.S. Environmental Protection Agency , Region 6, Dallas , Texas , USA.
J Air Waste Manag Assoc ; 66(4): 412-9, 2016 Apr.
Article em En | MEDLINE | ID: mdl-26771215
ABSTRACT
UNLABELLED A pilot study was conducted in application of the U.S. Environmental Protection Agency (EPA) Methods 325A/B variant for monitoring volatile organic compounds (VOCs) near two oil and natural gas (ONG) production well pads in the Texas Barnett Shale formation and Colorado Denver-Julesburg Basin (DJB), along with a traffic-dominated site in downtown Denver, CO. As indicated in the EPA method, VOC concentrations were measured for 14-day sampling periods using passive-diffusive tube samplers with Carbopack X sorbent at fenceline perimeter and other locations. VOCs were significantly higher at the DJB well pad versus the Barnett well pad and were likely due to higher production levels at the DJB well pad during the study. Benzene and toluene were significantly higher at the DJB well pad versus downtown Denver. Except for perchloroethylene, VOCs measured at passive sampler locations (PSs) along the perimeter of the Barnett well pad were significantly higher than PSs farther away. At the DJB well pad, most VOC concentrations, except perchloroethylene, were significantly higher prior to operational changes than after these changes were made. Though limited, the results suggest passive samplers are precise (duplicate precision usually ≤10%) and that they can be useful to assess spatial gradients and operational conditions at well pad locations over time-integrated periods. IMPLICATIONS Recently enacted EPA Methods 325A/B use passive-diffusive tube samplers to measure benzene at multiple fenceline locations at petrochemical refineries. This pilot study presents initial data demonstrating the utility of Methods 325A/B for monitoring at ONG facilities. Measurements revealed elevated concentrations reflective of production levels and spatial gradients of VOCs relative to source proximity at the Barnett well pad, as well as operational changes at the DJB well pad. Though limited, these findings indicate that Methods 325A/B can be useful in application to characterize VOCs at well pad boundaries.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Monitoramento Ambiental / Compostos Orgânicos Voláteis / Campos de Petróleo e Gás País/Região como assunto: America do norte Idioma: En Ano de publicação: 2016 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Monitoramento Ambiental / Compostos Orgânicos Voláteis / Campos de Petróleo e Gás País/Região como assunto: America do norte Idioma: En Ano de publicação: 2016 Tipo de documento: Article