- Interim Final Rule (Revised BPT) (PDF)(9 pp, 1 MB, May 13, 1976, 41 FR 19832)
-
Development Document for the Coal Mining Category (PDF)(293 pp, 10 MB,
May 1976,
440/1-76/057a)
Industry description, wastewater characterization, treatment technologies, regulatory compliance cost estimates and pollutant loadings for the final rule
US EPA
United States Environmental Protection Agency