PART 457—EXPLOSIVES MANUFACTURING POINT SOURCE CATEGORY Authority: Secs. 301, 304(b) and (c), 306(b), 307(b) and (c), Federal Water Pollution Control Acts, as amended (33 U.S.C. 1251, 1311, 1314(b) and (c), 1316(b) and 1317(b) and (c), 86 Stat. 816 et seq.; Source: 41 FR 10184, Mar. 9, 1976, unless otherwise noted. Subpart A—Manufacture of Explosives Subcategory § 457.10 Applicability; description of the commercial manufacture of explosives subcategory. The provisions of this subpart are applicable to discharges resulting from the production of explosives. § 457.11 Specialized definitions. For the purpose of this subpart: (a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart. (b) The term “product” shall mean dynamite, nitroglycerin, cyclotrimethylene trinitramine (RDX), cyclotetramethylene tetranitramine (HMX), and trinitrotoluene (TNT). § 457.12 Effluent limitations and guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. Except as provided in §§ 125.30 through 125.32, any existing point source subject to this subpart, shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): (a) The following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this paragraph, which may be discharged from the manufacture of explosives by a point source subject to the provisions of this paragraph after application of the best practical control technology currently available: [Metric units, kg/kkg of product; English units, lb/1,000 lb of product] Effluent characteristic Effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed— COD 7.77 2.59 BOD 5 0.72 0.24 TSS 0.25 0.084 pH ( 1 ( 1 1 [41 FR 10184, Mar. 9, 1976, as amended at 60 FR 33971, June 29, 1995] Subpart B [Reserved] Subpart C—Explosives Load, Assemble, and Pack Plants Subcategory § 457.30 Applicability; description of the commercial explosives load, assemble and pack plants subcategory. The provisions of this subpart are applicable to discharges resulting from explosives load, assemble and pack plants. § 457.31 Specialized definitions. For the purpose of this subpart: (a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart. (b) The term “product” shall mean products from plants which blend explosives and market a final product, and plants that fill shells and blasting caps. Examples of such installations would be plants manufacturing ammonium nitrate and fuel oil (ANFO), nitrocarbonitrate (NCN), slurries, water gels, and shells. § 457.32 Effluent limitations and guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. Except as provided in §§ 125.30 through 125.32, any existing point source subject to this subpart, shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): (a) The following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this paragraph, which may be discharged from the explosives load, assemble and pack plants by a point source subject to the provisions of this paragraph after application of the best practical control technology currently available: [Metric units, kg/kkg of product; English units, lb/1,000 lb of product] Effluent characteristic Effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed— O&G 0.11 0.035 TSS 0.26 0.088 pH ( 1 ( 1 1 [41 FR 10184, Mar. 9, 1976, as amended at 60 FR 33971, June 29, 1995]