[Code of Federal Regulations]
[Title 40, Volume 26]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR406.16]

[Page 78-79]
 
                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

[[Page 79]]

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.
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]