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Regulatory Development and Retrospective Review Tracker

Effluent Guidelines and Standards for Unconventional Oil and Gas Extraction including Coalbed Methane and Shale Gas Extraction

a.k.a. ELG for Unconventional Oil and Gas Extraction - Coalbed Methane and Shale Gas

RIN: 2040-AF35 (What's this?)

Docket No.: EPA-HQ-OW-2011-0334 (What's this?)

Current Phase: Pre-Proposal (What's this?)

This action will collect information, review existing technologies, and develop regulatory options to control discharges of pollutants from the advances in directional drilling and hydraulic fracturing. In recent years there has been substantial growth in extraction and production of oil and gas resources, including shale gas, using unconventional technologies.

Part of this growth can be attributed to advances in directional drilling and hydraulic fracturing. This unconventional oil and gas production can generate substantial volumes of wastewater and the current state of regulations for discharges associated with these unconventional activities varies. These wastewaters have been found to contain elevated concentrations of some or all of the following pollutants: fracturing fluid additives, salt content (often expressed as total dissolved solids or TDS), conventional pollutants, organics, metals, and NORM (naturally occurring radioactive material) which, if discharged, can directly impact aquatic life and drinking water sources.

NPRM: Published in FR12/2014 (projected)

Potential Effects

Of the potential effects described in Reg DaRRT, none are anticipated at this time.

Participate / Learn More Regulatory Review

Some of EPA's rulemakings undergo regulatory review (What's this?), as prescribed by Executive Order 12866 and coordinated by the Office of Management and Budget (OMB). The following list describes which of this rulemaking's stages have completed review and published in the Federal Register, if any, and provides links to the review documents where available. Consult the "Timeline" section of this Web page for the dates of each review.

  • NPRM - No Information Available.
Citations & Authorities

Code of Federal Regulations (CFR) Citation
40 CFR 435

Legal Authority
33 USC 1311;1314;1316;1317;1318;1342;1361


This site provides summaries of priority rulemakings and priority retrospective reviews of existing regulations. We update most of the site at the beginning of each month, though some data is updated more frequently if it is time sensitive. The information on this site is not intended to and does not commit EPA to specific conclusions or actions. For example, after further analysis, EPA may decide the effects of a rule would be different or it may decide to terminate a rulemaking.

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