[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: 40CFR423.16]

[Page 660]
 
                TITLE 40-PROTECTION OF ENVIRONMENT
 
      CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 423-STEAM ELECTRIC POWER GENERATING POINT SOURCE CATEGORY--Table of Contents
 
Sec. 423.16  Pretreatment standards for existing sources (PSES).

    Except as provided in 40 CFR 403.7 and 403.13, any existing source 
subject to this subpart which introduces pollutants into a publicly 
owned treatment works must comply with 40 CFR part 403 and achieve the 
following pretreatment standards for existing sources (PSES) by July 1, 
1984:
    (a) There shall be no discharge of polychlorinated biphenol 
compounds such as those used for transformer fluid.
    (b) The pollutants discharged in chemical metal cleaning wastes 
shall not exceed the concentration listed in the following table:

------------------------------------------------------------------------
                                                    PSES pretreatment
                                                        standards
        Pollutant or pollutant property         ------------------------
                                                  Maximum for 1 day (mg/
                                                            l)
------------------------------------------------------------------------
Copper, total..................................            1.0
------------------------------------------------------------------------

    (c) [Reserved-Nonchemical Metal Cleaning Wastes].
    (d)(1) The pollutants discharged in cooling tower blowdown shall not 
exceed the concentration listed in the following table:

------------------------------------------------------------------------
                                                    PSES pretreatment
                                                        standards
        Pollutant or pollutant property         ------------------------
                                                   Maximum for any time
                                                          (mg/l)
------------------------------------------------------------------------
The 126 priority pollutants (Appendix A)                  (\1\)
 contained in chemicals added for cooling tower
 maintenance, except:
  Chromium, total..............................            0.2
  Zinc, total..................................            1.0
------------------------------------------------------------------------
\1\ No detectable amount.

    (2) At the permitting authority's discretion, instead of the 
monitoring in 40 CFR 122.11(b), compliance with the limitations for the 
126 priority pollutants in paragraph (d)(1) of this section may be 
determined by engineering calculations which demonstrate that the 
regulated pollutants are not detectable in the final discharge by the 
analytical methods in 40 CFR part 136.