On Monday, September 18, US EPA
promulgated a Final Rule in the
Federal Register to postpone a compliance deadline for coal-fired power plants subject to
new Clean Water Act effluent limitations finalized in November 2015. In the November 2015 Final Rule, part of which is now under reconsideration, EPA:
- Lowers permissible discharge limits for key pollutants like arsenic, mercury, selenium, and nitrogen; and
- Requires operators of power plants to install new Best Available Technology or BAT to reduce discharges of toxic metals and other toxins and meet new “pretreatment standards for existing sources,” or PSES.

In
Monday’s rulemaking, EPA delayed the compliance deadline for one part of that 2015 Final Rule—
effluent limitations for flue gas desulfurization (FGD) wastewater and bottom ash transport water. For these two waste streams, the earliest deadline will be delayed while EPA considers a separate Clean Water Act rulemaking to address these specific waste streams.
Originally, the 2015 rule required power plants to put in place new technology “…as soon as possible beginning November 1, 2018.” With Monday’s Final Rule, that deadline is amended—for FGD wastewater and bottom ash transport water
only—to
“…as soon as possible beginning November 1, 2020.” To see a full list of electricity generation waste streams impacted by the 2015 Final Rule, read
New Effluent Limitations for Coal Fired Power Plants. A majority of the requirements in the 2015 Rule are unaffected by EPA’s decision to postpone the compliance date for the two specific waste streams addressed above.
Trusted EHS Manager Training—Anytime, Anywhere
New to EPA compliance? Need an update on new and changing requirements under major environmental programs? Complete Environmental Regulations training is now available both in-person and online.
Get over 20 hours of EHS training content to help you achieve and maintain compliance with EPA’s major air, water, and chemical mandates. Pause and resume your training anytime—and access it anywhere--to fit training into your schedule. Need support?
Get help from Lion 7 days a week. Join us on November 6 for expert-led training to help you manage compliance with EPA’s major programs—the Clean Air Act, Clean Water Act, SDWA, TSCA, EPCRA, CERCLA, and more. Learn what you need to know to ask the right questions of leadership and make big decisions to protect employees, the public, and the environment. Plus, defend your business against EPA fines now as high as $95,000 per day, per violation. Seats are limited!
Sign up now. This workshop comes to Atlanta, Salt Lake City, and Pittsburgh in 2018!