40 C.F.R. § 425.15

Current through September 30, 2024

Section 425.15 - Pretreatment standards for existing sources (PSES)

(a) Except as provided in § 425.04 and 40 CFR 403.7 and 403.13 , any existing source subject to this subpart which introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403, and achieve the following pretreatment standards:

Pollutant or pollutant property	PSES
	Maximum for any 1 day	Maximum for monthly average
	Milligrams per liter (mg/l)
Sulfide	24
Total chromium	12	8
pH	(1)	(1)

¹ Not less than 7.0.

(b) Any existing source subject to this subpart which processes less than 275 hides/day shall comply with § 425.15(a) , except that the total chromium limitations contained in § 425.15(a) do not apply.

40 C.F.R. §425.15

47 FR 52870, Nov. 23, 1982; 48 FR 30116, June 30, 1983, as amended at 53 FR 9182, Mar. 21, 1988; 61 FR 35685, July 8, 1996