The PIOGA Press
(by Jean M. Mosites and Abigail F. Jones)
On June 28, 2016, the U.S. Environmental Protection Agency (EPA) published a rule entitled “Effluent Limitation Guidelines and Standards for the Oil and Gas Extraction Point Source Category,” which prohibits the discharge of unconventional wastewater to publicly owned treatment works (POTWs). The rule went into effect on August 29, 2016.
The prohibition, now codified in 40 C.F.R. §§ 435.33 and 435.34, applies to “wastewater pollutants associated with production, field exploration, drilling, well completion or well treatment for unconventional oil and gas extraction.” The phrase “unconventional oil and gas extraction” (UOG) is defined in the rule to mean oil and natural gas produced from “a shale and/or tight formation (including, but not limited to, shale gas, shale oil, tight gas, tight oil).”
Subsequently, the rule was challenged in court and has been remanded to EPA for review and possible revision. The legal challenge to the rule, described in detail below, relates to its applicability to Pennsylvania-defined “conventional” oil and gas operators. However, EPA’s administrative review of the rule could affect oil and gas wastewater disposal options for both conventional and unconventional operators in Pennsylvania.
Implementation deadline extension
In the preamble to the publication of the final rule, EPA stated that no operators subject to the rule were currently discharging to POTWs. Based on this understanding, the rule was to go into effect within 60 days of publication. Following promulgation of the rule, EPA received letters indicating that there were facilities likely discharging UOG wastewater to POTWs in Pennsylvania. As a result, EPA issued a final rule on December 7, 2016, to extend the implementation deadline for existing sources that were lawfully discharging wastewater to POTWs between April 17, 2015, and June 28, 2016. …