30 CFR § 817.42
Hydrologic balance: Water quality standards and effluent limitations
July 29, 2020
Discharges of water from areas disturbed by underground mining activities shall be made in compliance with all applicable State and Federal water quality laws and regulations and with the effluent limitations for coal mining promulgated by the U.S. Environmental Protection Agency set forth in 40 CFR part 434.
[47 FR 47222, Oct. 22, 1982, as amended at 48 FR 44051, Sept. 26, 1983; 81 FR 93418, Dec. 20, 2016; 82 FR 54999, Nov. 17, 2017]
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