[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: 40CFR422.53]



[Page 642]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 422_PHOSPHATE MANUFACTURING POINT SOURCE CATEGORY--Table of Contents

 

           Subpart E_Defluorinated Phosphoric Acid Subcategory

 

Sec.  422.53  Effluent limitations and guidelines representing the degree 

of effluent reduction attainable by the application of the best available 

technology economically achievable.



    The following limitations establish the quantity or quality of 

pollutants or properties, which may be discharged by a point source 

subject to the provisions of this subpart after application of the best 

available technology economically achievable:

    (a) Subject to the provisions of paragraphs (b), (c) and (d) of this 

section, the following limitations establish the quantity or quality of 

pollutants or pollutant properties, controlled by this section, which 

may be discharged by a point source subject to the provisions of this 

subpart after application of the best available technology economically 

achievable: There shall be no discharge of process wastewater pollutants 

to navigable waters.

    (b) Process waste water pollutants from a cooling water 

recirculation system designed, constructed and operated to maintain a 

surge capacity equal to the runoff from the 25-year, 24-hour rainfall 

event may be discharged, after treatment to the standards set forth in 

paragraph (c) of this section, whenever chronic or catastrophic 

precipitation events cause the water level in the pond to rise into the 

surge capacity. Process waste water must be treated and discharged 

whenever the water level equals or exceeds the mid point of the surge 

capacity.

    (c) The concentration of pollutants discharged in process waste 

water pursuant to the limitations of paragraph (b) of this section shall 

not exceed the values listed in the following table:



                         [Milligrams per liter]

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

                                                Effluent limitations

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

                                                        Average of daily

          Effluent characteristic             Maximum     values for 30

                                             for any 1  consecutive days

                                                day         shall not

                                                            exceed--

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

Total phosphorus (as P)...................         105                35

Fluoride (as F)...........................          75                25

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



    (d) The concentration of pollutants discharged in contaminated non-

process wastewater shall not exceed the values listed in the following 

table:



                         [Milligrams per liter]

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

                                                Effluent limitations

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

                                                        Average of daily

          Effluent characteristic             Maximum     values for 30

                                             for any 1  consecutive days

                                                day         shall not

                                                            exceed--

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

Total phosphorus (as P)...................         105                35

Fluoride (as F)...........................          75                25

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





[41 FR 25977, June 23, 1976, as amended at 44 FR 50743, Aug. 29, 1979]