[Code of Federal Regulations] [Title 40, Volume 27] [Revised as ofJuly 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR429.75] [Page 93-94] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 429--TIMBER PRODUCTS PROCESSING POINT SOURCE CATEGORY--Table of Contents Subpart F--Wood Preserving--Water Borne or Nonpressure Subcategory Sec. 429.75 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 process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources (PSES): [[Page 94]] There shall be no introduction of process wastewater pollutants into publicly owned treatment works.