[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR466.23] [Page 609] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 466_PORCELAIN ENAMELING POINT SOURCE CATEGORY--Table of Contents Subpart B_Cast Iron Basis Material Subcategory Sec. 466.23 New source performance standards. Any new source subject to this subpart must achieve the following new source performance standards. (a) There shall be no discharge of process wastewater pollutants from metal preparation operations. (b) The discharge of process wastewater pollutants from all porcelain enameling coating operations shall not exceed the values set forth below: Subpart B--NSPS ------------------------------------------------------------------------ Maximum for any Maximum for 1 day monthly average Pollutant or pollutant property ----------------------------------- ------------------------------------------------------------------------ Mg/m\2\ (pounds per million ft\2\) of area coated ----------------------------------- Chromium............................ 0.47 (0.10) 0.19 (0.04) Lead................................ 0.13 (0.03) 0.11 (0.02) Nickel.............................. 0.69 (0.14) 0.47 (0.10) Zinc................................ 1.29 (0.27) 0.53 (0.11) Aluminum............................ 3.82 (0.78) 1.56 (0.32) Iron................................ 1.55 (0.32) 0.79 (0.16) Oil and grease...................... 12.60 (2.58) 12.60 (2.58) TSS................................. 18.91 (3.87) 15.12 (3.10) pH.................................. (\1\) (\1\) (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range 7.5 to 10.0 at all times. [47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36544, Sept. 6, 1985]