CFR › Title 40 › Part 436 › §436.38140 CFR §436.381Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkFor the purpose of this subpart:(a)Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.(b)The term “mine drainage” shall mean any water drained, pumped or siphoned from a mine.