40 CFR § 425.74 Leather Tanning and Finishing Point Source Category

§ 425.74 New source performance standards (NSPS).

Current through Aug 22, 2025 · Read all of Part 425

Any new source subject to this subpart must achieve the following new source performance standards (NSPS):

Pollutant or pollutant propertyNSPS
Maximum for any 1 dayMaximum for monthly average
Kg/kkg (or pound per 1,000 lb) of raw material
BOD513.25.9
TSS19.18.7
Oil and grease5.62.5
Total chromium0.340.12
pH( 1)( 1)

1 Within the range 6.0 to 9.0.

← § 425.73 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).§ 425.75 Pretreatment standards for existing sources (PSES). →