40 C.F.R. § 415.475
New source performance standards (NSPS).
Cite as 40 C.F.R. § 415.475 (2026)
(a) Any new source subject to this subpart and producing nickel sulfate, nickel chloride, nickel fluorobate or nickel nitrate must achieve the following new source performance standards (NSPS): Subpart AU—Nickel Sulfate, Nickel Chloride, Nickel Nitrate, and Nickel Fluoborate Pollutant or pollutant property NSPS effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (or pounds per 1,000 lb) of product TSS 0.096 0.032 Copper 0.00074 0.00024 Nickel 0.00074 0.00024 pH ( 1 ) ( 1 ) 1 Within the range 6.0 to 9.0. (b) Any new source subject to this subpart and producing nickel carbonate must achieve the following new source performance standards (NSPS): Subpart AU—Nickel Carbonate Pollutant or pollutant property NSPS effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (or pounds per/1,000 lb) or product TSS 17. 5.6 Copper 0.13 0.042 Nickel 0.13 0.042 pH ( 1 ) ( 1 ) 1 Within the range 6.0 to 9.0.