40 C.F.R. § 420.95

Pretreatment standards for existing sources (PSES).

Last amended: 2016Year: 2026Length: 815 wordsOfficial source

Cite as 40 C.F.R. § 420.95 (2026)

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. (a) Sulfuric acid (spent acid solutions and rinse waters) —(1) Rod, wire, and coil. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Lead 0.000526 0.000175 Zinc 0.000701 0.000234 (2) Bar, billet, and bloom. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Lead 0.000169 0.0000563 Zinc 0.000225 0.0000751 (3) Strip, sheet, and plate. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Lead 0.000338 0.000113 Zinc 0.000451 0.000150 (4) Pipe, tube, and other products. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Lead 0.000939 0.000313 Zinc 0.00125 0.000417 (5) Fume scrubber. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kilograms per day Lead 0.0368 0.0123 Zinc 0.0491 0.0164 Note: The above limitations are applicable to each fume scrubber associated with sulfuric acid pickling operations. (b) Hydrochloric acid pickling (spent acid solutions and rinse waters) —(1) Rod, wire, and coil. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Lead 0.000920 0.000307 Zinc 0.00123 0.000409 (2) Strip, sheet, and plate. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Lead 0.000526 0.000175 Zinc 0.000701 0.000234 (3) Pipe, tube, and other products. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Lead 0.00192 0.000638 Zinc 0.00255 0.000851 (4) Fume scrubber. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kilograms per day Lead 0.0368 0.0123 Zinc 0.0491 0.0164 Note: The above limitations shall be applicable for each fume scrubber associated with hydrochloric acid pickling operations. (5) Acid regeneration (absorber vent scrubber). Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kilograms per day Lead 0.245 0.0819 Zinc 0.327 0.109 Note: The above limitations shall be applicable to the absorber vent scrubber wastewater associated with hydrochloric acid regeneration plants. (c) Combination acid pickling (spent acid solutions and rinse waters) —(1) Rod, wire, and coil. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 0.00213 0.000852 Nickel 0.00192 0.000638 (2) Bar, billet, and bloom. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 0.000960 0.000384 Nickel 0.000864 0.000288 (3) Strip, sheet, and plate—continuous. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 0.00626 0.00250 Nickel 0.00563 0.00188 (4) Strip, sheet, and plate—batch. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 0.00192 0.000768 Nickel 0.00173 0.000576 (5) Pipe, tube, and other products. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 0.00322 0.00129 Nickel 0.00289 0.000964 (6) Fume scrubber. Subpart I Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kilograms per day Chromium 0.0819 0.0327 Nickel 0.0735 0.0245 Note: The above limitations shall be applicable to each fume scrubber associated with a combination acid pickling operation. [47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982, as amended at 49 FR 21033, May 17, 1984]
Cross-references to the CFR
40:403.7
40 C.F.R. § 420.95: Pretreatment standards for existing sources (PSES). | Justis AI