[Code of Federal Regulations]

[Title 40, Volume 29]

[Revised as of July 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR437.4]



[Page 364-365]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 437_THE CENTRALIZED WASTE TREATMENT POINT SOURCE CATEGORY--Table 

of Contents

 

Sec. 437.4  Monitoring requirements.



    (a) Permit compliance monitoring is required for each regulated 

parameter.

    (b) Any CWT facility that discharges wastewater resulting from the 

treatment of metal-bearing waste, oily waste, or organic-bearing waste 

must monitor as follows:

    (1) Facilities subject to more than one subpart of this part must 

monitor for compliance for each subpart after treatment and before 

mixing of the



[[Page 365]]



waste with wastes of any other subpart. Alternatively, a multiple 

wastestream subcategory facility may certify that it provides equivalent 

treatment as defined in Sec. 437.2(h) for the applicable waste and 

monitor for compliance with the applicable set of multiple wastestream 

subcategory limitations after mixing.

    (2) Facilities subject to one or more subpart of this part must 

monitor for compliance with the applicable subpart after treatment and 

before mixing of the waste with wastes of any other subpart, 

uncontaminated storm water, or wastewater subject to another effluent 

limitation or standard in Subchapter N. If, however, the facility can 

demonstrate to the receiving POTW or permitting authority the capability 

of achieving the effluent limitation or standard for each subpart after 

treatment and before mixing with other wastestreams, the facility may 

monitor for compliance after mixing. In the case of a facility which 

elects to comply with the applicable set of multiple wastestream 

subcategory limitations or standards, it is only subject to one subpart.

    (3) When a CWT facility treats any waste receipt that contains 

cyanide at a concentration higher than 136 mg/L, the CWT facility must 

monitor for cyanide after cyanide treatment and before dilution with 

other wastestreams. If, however, the facility can demonstrate to the 

receiving POTW or permitting authority the capability of achieving the 

cyanide limitation or standard after cyanide treatment and before mixing 

with other wastestreams, the facility may monitor for compliance after 

mixing.