A series of papers describing case studies that followed the 4b process alternative to TMDLs in several studies. Published in the Water Environment Federation’s TMDL2009 conference proceedings.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Category 4b Demonstration for Atrazine Impaired Waters in the Little Arkansas River Subbasin, Kansas (PDF)(15 pp, 253 K)
- Category 4b Demonstration for Petroleum Hydrocarbon Impaired Waters in the Kenai River, Alaska (PDF)(10 pp, 136 K)
- Category 4b Demonstration for Pathogen Impaired Tributaries to Pugent Sound in Kitsap County, Washington (PDF)(9 pp, 55 K)
- Category 4b - Demonstration for Point Source Impaired Waters and the Permit in Lieu of a Total Maximum Daily Load Process for the State of Missouri (PDF)(9 pp, 39 K)