40 C.F.R. § 461.63
New source performance standards (NSPS).
Cite as 40 C.F.R. § 461.63 (2026)
(a) The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below: (1) Subpart F—Silver Chloride Cathodes—Chemically Reduced—NSPS. Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average Metric units—mg/kg of silver processed English units—pounds per 1,000,000 pounds of silver processed Lead 22.93 10.65 Silver 23.75 9.83 Iron 98.28 49.96 TSS 1,228.5 982.8 COD 4,095.0 1,999.0 pH ( 1 ) ( 1 ) 1 Within the range of 7.5-10.0 at all times. (2) Subpart F—Silver Chloride Cathodes—Electrolytic—NSPS. Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average Metric units—mg/kg of silver processed English units—pounds per 1,000,000 pounds of silver processed Lead 40.6 18.9 Silver 42.1 17.4 Iron 174.0 88.5 TSS 2,175.0 1,740.0 COD 7,250.0 3,540.0 pH ( 1 ) ( 1 ) 1 Within the range of 7.5-10.0 at all times. (3) Subpart F—Cell Testing—NSPS. Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average Metric units—mg/kg of cells produced English units—pounds per 1,000,000 pounds of cells produced Lead 19.5 7.89 Silver 15.3 6.31 Iron 63.1 32.1 TSS 789.0 631.2 COD 2,630.0 1,290.0 pH ( 1 ) ( 1 ) 1 Within the range of 7.5-10.0 at all times. (4) Subpart F—Floor and Equipment Wash—NSPS. Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average Metric units—mg/kg of cells produced English units—pounds per 1,000,000 pounds of cells produced Lead 0.026 0.012 Silver 0.027 0.011 Iron 0.112 0.057 COD 4.70 2.30 TSS 1.41 1.13 pH ( 1 ) ( 1 ) 1 Within the range of 7.5-10.0 at all times. (5) Subpart F—Air Scrubber—NSPS. Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average Metric units—mg/kg of cells produced English units—pounds per 1,000,000 pounds of cells produced TSS 8,467.0 4,030.0 pH ( 1 ) ( 1 ) 1 Within the range of 7.5-10.0 at all times. (b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above. [49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]