[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: 40CFR415.25]



[Page 252]

 

                   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.  415.25  New source performance standards (NSPS).



    Any new source subject to this subpart must achieve the following 

new source performance standards (NSPS):

    (a) Subject to the provisions of paragraph (b) 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 25-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 25-year, 

24-hour rainfall event, when such event occurs.