Related Information Coal Mining Effluent Guidelines You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more. Final Rule (Revised BPT) (PDF)(11 pp, 2 MB, April 26, 1977, 42 FR 21380) Proposed Rule (BPT and BAT) (PDF)(3 pp, 521 K, May 13, 1976, 41 FR 19841)