§ 413.24 Pretreatment standards for existing sources.
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):
(a) No user introducing wastewater pollutants into a publicly owned treatment works under the provisions of this subpart shall augment the use of process wastewater or otherwise dilute the wastewater as a partial or total substitute for adequate treatment to achieve compliance with this standard.
(b) For a source discharging less than 38,000 liters (10,000 gal) per calendar day of electroplating process wastewater the following limitations shall apply:
Subpart B—Precious Metals Facilities Discharging Less Than 38,000 Liters Per Day PSES Limitations (mg/l)
Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 4 consecutive monitoring days shall not exceed |
---|---|---|
CN, A | 5.0 | 2.7 |
Pb | .6 | .4 |
Cd | 1.2 | .7 |