Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 373 - THIRD STAGE TREATMENT LAGOON EXEMPTIONS
Subpart C - STREAM INFORMATION
Section 373.304 - Stream Assimilative Capacity
Universal Citation: 35 IL Admin Code ยง 373.304
Current through Register Vol. 48, No. 38, September 20, 2024
a) Unless conditions as described in Appendix D indicate otherwise, the applicant shall use the Modified Streeter-Phelps Equation contained in Appendix B to predict the influence of the treated wastewater discharge on the dissolved oxygen profile of the receiving stream.
b) The critical conditions for estimating the stream assimilative capacity shall include:
1) the 7-day 10-year low flow
value,
2) ambient
BOD5,
3)
ambient total ammonia nitrogen concentration,
4) ambient dissolved oxygen
concentration,
5) the lagoon system
discharge at its design average flow rate and design effluent
quality,
6) expected maximum stream
temperature, and
7) other hydraulic
parameters as described in Appendix C.
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