40 CFR 420.55 - Pretreatment standards for existing sources (PSES).
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.
|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|