[Code of Federal Regulations] [Title 40, Volume 28] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR419.55] [Page 384-385] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 419_PETROLEUM REFINING POINT SOURCE CATEGORY--Table of Contents Subpart E_Integrated Subcategory Sec. 419.55 Pretreatment standards for existing sources (PSES). Except as provided in 40 CFR 403.7 and 403.13 any existing source subject [[Page 385]] to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR 403 and achieve the following pretreatment standards for existing sources (PSES). The following standards apply to the total refinery flow contribution to the POTW: ------------------------------------------------------------------------ Pretreatment standards for Pollutant or pollutant property existing sources--maximum for any 1 day ------------------------------------------------------------------------ Milligrams per liter (mg/l) --------------- Oil and grease........................................ 100 Ammonia (as N)........................................ \1\100 ------------------------------------------------------------------------ \1\ Where the discharge to the POTW consists solely of sour waters, the owner or operator has the option of complying with this limit or the daily maximum mass limitation for ammonia set forth in Sec. 419.53 (a) and (b).