[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: 40CFR415.22]



[Page 251]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 415_INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY--Table 

of Contents

 

            Subpart B_Aluminum Sulfate Production Subcategory

 

Sec.  415.22  Effluent limitations guidelines representing the degree of 

effluent reduction attainable by the application of the best practicable 

control technology currently available (BPT).



    Except as provided in 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 practicable control technology currently 

available (BPT):

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

section, there shall be no discharge of process wastewater pollutants 

into navigable waters.

    (b) A process wastewater impoundment which is designed, constructed 

and operated so as to contain the precipitation from the 10-year, 24-

hour rainfall event as established by the National Climatic Center, 

National Oceanic and Atmospheric Administration for the area in which 

such impoundment is located may discharge that volume of process 

wastewater which is equivalent to the volume of precipitation that falls 

within the impoundment in excess of that attributable to the 10-year, 

24-hour rainfall event, when such event occurs.

    (c) During any calendar month there may be discharged from a process 

wastewater impoundment either a volume of process wastewater equal to 

the difference between the precipitation for that month that falls 

within the impoundment and the evaporation for that month, or if 

greater, a volume of process wastewater equal to the difference between 

the mean precipitation for that month that falls within the impoundment 

and the mean evaporation for that month as established by the National 

Climatic Center, National Oceanic and Atmospheric Administration for the 

area in which such impoundment is located (or as otherwise determined if 

no monthly data have been established by the National Climatic Center).

    (d) Any process wastewater discharged pursuant to paragraph (c) of 

this section shall comply with each of the following requirements:



                       Subpart B--Aluminum Sulfate

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

                                                     BPT limitations

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

                                                              Average of

                                                                daily

        Pollutant or pollutant property         Maximum for   values for

                                                 any 1 day        30

                                                             consecutive

                                                                 days

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

                                                Milligrams per liter (mg/

                                                           l)

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

TSS...........................................           50           25

pH............................................        (\1\)        (\1\)

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

\1\ Within the range 6.0 to 9.0.