Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 301 - INTRODUCTION
Section 301.421 - Wasteload Allocation

"Waste Load Allocation" or "WLA" is the portion of receiving water's loading capacity that is allocated to one of its existing or future point sources of pollution, as more fully defined at 40 CFR 130.2(h). In the absence of a TMDL approved by USEPA under 40 CFR 130.7 or an assessment and remediation plan developed and approved according to procedure 3.A of Appendix F of 40 CFR 132, incorporated by reference in Section 301.106, a WLA is the allocation for an individual point source that ensures that the level of water quality to be achieved by the point source is derived from and complies with all applicable water quality standards.