[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: 40CFR411.20]

[Page 193]
 
                TITLE 40-PROTECTION OF ENVIRONMENT
 
      CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 411-CEMENT MANUFACTURING POINT SOURCE CATEGORY--Table of Contents
 
                  Subpart B-Leaching Subcategory
 
Sec. 411.20  Applicability; description of the leaching subcategory.


    The provisions of this subpart are applicable to discharges 
resulting from the process in which several mineral ingredients 
(limestone or other natural sources of calcium carbonate, silica, 
alumina, and iron together with gypsum) are used in the manufacturing of 
cement and in which kiln dust is contacted with water as an integral 
part of the process or water is used in wet scrubbers to control kiln 
stack emissions.