[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: 40CFR415.14] [Page 250-251] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 415_INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart A_Aluminum Chloride Production Subcategory Sec. 415.14 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 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 251]] Subpart A--Aluminum Chloride ------------------------------------------------------------------------ Pollutant or pollutant property PSES limitations ------------------------------------------------------------------------ pH..................................... Within the range 5.0 to 10.0. ------------------------------------------------------------------------