[Code of Federal Regulations] [Title 40, Volume 28] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR425.85] [Page 18] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 425_LEATHER TANNING AND FINISHING POINT SOURCE CATEGORY--Table of Contents Subpart H_Pigskin Subcategory Sec. 425.85 Pretreatment standards for existing sources (PSES). Except as provided in Sec. 425.04 and 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403, and achieve the following pretreatment standards: ------------------------------------------------------------------------ PSES ------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ Milligrams per liter (mg/ l) ----------------------------------------------- Sulfide....................................... 24 ........... Total chromium................................ 12 8 pH............................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Not less than 7.0. [47 FR 52870, Nov. 23, 1982, as amended at 61 FR 35685, July 8, 1996]