[Code of Federal Regulations]
[Title 40, Volume 27]
[Revised as ofJuly 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR440.113]

[Page 431-432]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 440--ORE MINING AND DRESSING POINT SOURCE CATEGORY--Table of Contents
 
                  Subpart K--Platinum Ores Subcategory
 
Sec. 440.113  Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically 
          achievable (BAT).

    Except as provided in subpart L of this part and 40 CFR 125.30 
through 125.32, any existing point source subject to this subpart must 
achieve the

[[Page 432]]

following effluent limitations representing the degree of effluent 
reduction attainable by the application of the best available technology 
economically achievable (BAT):
    (a) The concentration of pollutants discharged in mine drainage from 
mines that produce platinum bearing ores from open-pit or underground 
operations other than placer deposits shall not exceed:

------------------------------------------------------------------------
                                                 Effluent limitations
                                             ---------------------------
                                                             Average of
           Effluent characteristic                          daily values
                                               Maximum for     for 30
                                                any 1 day    consecutive
                                                                days
------------------------------------------------------------------------
                                                 Milligrams per liter
                                             ---------------
Cu..........................................         0.30          0.15
Zn..........................................         1.5           0.75
Pb..........................................         0.6           0.3
Hg..........................................         0.002         0.001
Cd..........................................         0.10          0.05
------------------------------------------------------------------------

    (b) The concentration of pollutants discharged from mills that use 
the froth-flotation process alone, or in conjunction with other 
processes, for the beneficiation of platinum ores shall not exceed:

------------------------------------------------------------------------
                                                 Effluent limitations
                                             ---------------------------
                                                             Average of
           Effluent characteristic                          daily values
                                               Maximum for     for 30
                                                any 1 day    consecutive
                                                                days
------------------------------------------------------------------------
                                                 Milligrams per liter
                                             ---------------
Cu..........................................         0.30          0.15
Zn..........................................         1.0           0.5
Pb..........................................         0.6           0.3
Hg..........................................         0.002         0.001
Cd..........................................         0.10          0.05
------------------------------------------------------------------------