40 CFR § 425.05
Compliance dates
June 9, 2020
The compliance date for new source performance standards (NSPS) and pretreatment standards for new sources (PSES) is the date the new source commences discharge. The compliance date for BPT effluent limitations and guidelines and pretreatment standards for existing sources to no later than March 31, 1989.
[53 FR 9182, Mar. 21, 1988]
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