An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Steam Electric Generating Point Source Guidelines (40 CFR Part 423) pH Limitations for Low Volume Wastes Commingled with Once Through Cooling Water

Memo from Region 4 to Region 2 providing further clarification on if 40 CFR Part 423 requires pH limitations to be applied for a low volume waste stream prior to combination with once through cooling water.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Steam Electric Generating Point Source Guidelines (40 CFR Part 423) pH Limitations for Low Volume Wastes Commingled with Once Through Cooling Water (PDF)(2 pp, 99 K, February 24, 1986)