SUBTITLE C: WATER POLLUTION
CHAPTER I: POLLUTION CONTROL BOARD
PART 304 EFFLUENT STANDARDS
SECTION 304.201 WASTEWATER TREATMENT PLANT DISCHARGES OF THE METROPOLITAN WATER RECLAMATION DISTRICT OF GREATER CHICAGO
Section 304.201 Wastewater Treatment Plant Discharges of The Metropolitan Water Reclamation District of Greater Chicago
a) Calumet Treatment Plant Discharges:
The effluent standards of Section 304.124 as applied to cyanide discharges, Section 304.120(b) and (c), and Section 304.122 do not apply to carbonaceous BOD5 (CBOD5), total suspended solids (TSS), cyanide, and ammonia-nitrogen as N discharged from the Calumet Sewage Treatment Works of The Metropolitan Water Reclamation District of Greater Chicago. Instead, it must meet the following effluent standards, subject to the averaging rule of Section 304.104(a), effective July 1, 1988:
|
CONSTITUENT |
|
CONCENTRATION mg/L |
|
|
|
|
|
CBOD5 |
|
24 |
|
TSS |
|
28 |
|
Ammonia Nitrogen (as N) |
|
13 |
|
Cyanide |
|
0.15 |
b) North Side Sewage Treatment Works:
The effluent standards of Sections 304.120(b) and (c) and 304.122 do not apply to carbonaceous BOD5 (CBOD5), total suspended solids (TSS), and ammonia-nitrogen discharged from the North Side Sewage Treatment Works of The Metropolitan Water Reclamation District of Greater Chicago. Instead, it must meet the following standard, subject to the averaging rule of Section 304.104(a) effective July 1, 1988:
|
CONSTITUENT |
|
CONCENTRATION mg/L |
|
|
|
|
|
CBOD5 |
|
12 |
|
TSS |
|
20 |
|
Ammonia Nitrogen (as N) |
|
|
|
April - October |
|
2.5 |
|
November - March |
|
4.0 |
(Source: Amended at 47 Ill. Reg. 4601, effective March 23, 2023)