[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: 40CFR440.113]

[Page 427-428]
 
                   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 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:

[[Page 428]]



------------------------------------------------------------------------
                                                 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
------------------------------------------------------------------------