[Code of Federal Regulations]
[Title 40, Volume 26]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR421.40]

[Page 478]
 
                TITLE 40-PROTECTION OF ENVIRONMENT
 
      CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 421-NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY--Table of Contents
 
          Subpart D-Primary Copper Smelting Subcategory
 
Sec. 421.40  Applicability: Description of the primary copper smelting subcategory.

    Source: 49 FR 8800, Mar. 8, 1984, unless otherwise noted.


    The provisions of this subpart apply to process wastewater 
discharges resulting from the primary smelting of copper from ore or ore 
concentrates. Primary copper smelting includes, but is not limited to, 
roasting, converting, leaching if preceded by a pyrometallurgical step, 
slag granulation and dumping, fire refining, and the casting of products 
from these operations.