CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 414—ORGANIC CHEMICALS, PLASTICS, AND SYNTHETIC FIBERS > SUBPART A—General (§414.10 to §414.12) > 414.12—Compliance date for pretreatment standards for existing sources (PSES).