Regulation of TDS and chloride from oil and gas wastewater in pennsylvania

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The recent boom in unconventional natural gas (UNG) production from the Marcellus Shale Formation in Pennsylvania has brought challenges of how to treat the large volumes of wastewater produced during drilling and hydraulic fracturing. In the late 2000s, capacity at permitted wastewater treatment facilities was quickly overwhelmed. Drilling companies began sending their wastewater to Publicly Owned Treatment Works (POTW) that were not designed or permitted to treat wastewater high in Total Dissolved Solids (TDS) and chloride. Recognizing the need for wastewater effluent standards that specifically targeted TDS and chloride, the Pennsylvania Department of Environmental Protection (DEP) added new effluent standards under 25 Pa. Code Section 95 in August 2010. The new effluent limits for TDS and chloride were set at 500 mg/L and 250 mg/L, respectively. Under 25 Pa. Code Section 95, facilities permitted to treat oil and gas wastewater prior to August 2010 were exempt from the new effluent limits. Although much progress has been made in reducing TDS and chloride loads from UNG wastewater through regulation and voluntary agreements, the exemption in 25 Pa. Code Section 95 still exists for conventional oil and gas drilling wastewater, allowing the continued discharge of TDS and chloride at hundreds of times greater than the new limits. An overview of Chapter 95 is provided along with two case studies of wastewater treatment facilities that highlight the regulatory successes and failures in reducing TDS and chloride discharges to Pennsylvania's rivers.

Original languageEnglish (US)
Title of host publicationShale Energy Engineering 2014
Subtitle of host publicationTechnical Challenges, Environmental Issues, and Public Policy - Proceedings of the 2014 Shale Energy Engineering Conference
PublisherAmerican Society of Civil Engineers (ASCE)
Pages95-106
Number of pages12
ISBN (Print)9780784413654
DOIs
StatePublished - Jan 1 2014
EventShale Energy Engineering 2014: Technical Challenges, Environmental Issues, and Public Policy - Pittsburgh, PA, United States
Duration: Jul 21 2014Jul 23 2014

Publication series

NameShale Energy Engineering 2014: Technical Challenges, Environmental Issues, and Public Policy - Proceedings of the 2014 Shale Energy Engineering Conference

Other

OtherShale Energy Engineering 2014: Technical Challenges, Environmental Issues, and Public Policy
CountryUnited States
CityPittsburgh, PA
Period7/21/147/23/14

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Fuel Technology

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  • Cite this

    Chase, E. H. (2014). Regulation of TDS and chloride from oil and gas wastewater in pennsylvania. In Shale Energy Engineering 2014: Technical Challenges, Environmental Issues, and Public Policy - Proceedings of the 2014 Shale Energy Engineering Conference (pp. 95-106). (Shale Energy Engineering 2014: Technical Challenges, Environmental Issues, and Public Policy - Proceedings of the 2014 Shale Energy Engineering Conference). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784413654.010