[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: 40CFR423.16]



[Page 651-652]

 

                   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.



[[Page 652]]



    (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.