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 (PSES):
Subpart A-Aluminum Chloride
Pollutant or pollutant property | PSES limitations |
pH | Within the range 5.0 to 10.0. |
40 C.F.R. §415.14