[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: 40CFR406.16]



[Page 81-82]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 406_GRAIN MILLS POINT SOURCE CATEGORY--Table of Contents

 

                 Subpart A_Corn Wet Milling Subcategory

 

Sec.  406.16  Pretreatment standards for new sources.



    Any new source subject to this subpart that introduces process 

wastewater pollutants into a publicly owned treatment works must comply 

with 40 CFR part 403. In addition, the provisions set forth in paragraph 

(a) of this section apply, as well as the following pretreatment 

standard which establishes the quantity or quality of pollutants or 

pollutant properties controlled by this section which may be discharged 

to publicly owned treatment works by a new source subject to the 

provisions of this subpart.



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

      Pollutant or pollutant property           Pretreatment standard

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

pH........................................  No limitation.

BOD5......................................   Do.



[[Page 82]]





TSS.......................................   Do.

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



    (a) Process waste water shall not be discharged to a POTW at a flow 

rate or pollutant mass loading rate which is excessive over any time 

period during the peak load at a POTW. Excessive discharges are defined 

as those in which the flow of BOD5 or total suspended solids (TSS) 

exceed the respective values of P from the following formula:



P = K(Q+R)-S



where:



P = maximum allowable peak waste load for the new corn wet milling 

source to be discharged to the POTW (gallons per one hour for flow and 

pounds per day for BOD5 and TSS).

Q = average existing waste load to POTW.

R = average waste load for the new corn wet milling source to be 

discharged to POTW.

S = existing peak load of POTW.

K = 2. When the ratio of (S/Q) is greater than 1.5, K = 3.



    Calculations are to be based on dry weather conditions.



[40 FR 52016, Nov. 7, 1975, as amended at 60 FR 33936, June 29, 1995]