[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: 40CFR421.15]



[Page 460]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 421_NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY--Table 

of Contents

 

                 Subpart A_Bauxite Refining Subcategory

 

Sec.  421.15  Standards of performance for new sources.



    (a) Subject to the provisions of paragraph (b) of this section, the 

following standards of performance establish the quantity or quality of 

pollutants or pollutant properties which may be discharged by a new 

source subject to the provisions of this subpart: There shall be no 

discharge of process waste water pollutants to navigable waters.

    (b) During any calendar month there may be discharged from the 

overflow of a process waste water impoundment either a volume of process 

waste water equal to the difference between the precipitation for that 

month that falls within the impoundment and the evaporation within the 

impoundment for that month, or, if greater, a volume of process waste 

water equal to the difference between the mean precipitation for that 

month that falls within the impoundment and the mean evaporation for 

that month as established by the National Climatic Center, National 

Oceanic and Atmospheric Administration, for the area in which such 

impoundment is located (or as otherwise determined if no monthly data 

have been established by the National Climatic Center).



[39 FR 12825, Apr. 8, 1974]