Other Support Documents for CWA Methods

The following are general support documents for the Clean Water Act analytical methods program that are not analyte-specific.

Stability of Pharmaceuticals, Personal Care Products, Steroids, and Hormones in Aqueous Samples, POTW Effluents, and Biosolids (pdf) (362.45 KB, September 2010, 820-R-10-008)
Also known as "Holding Time Study"
Quality Assurance and Quality Control Requirements in Methods Not Published by EPA; Memorandum (pdf) (274.78 KB, May 7, 2009)
This memorandum addresses problems encountered in conducting analyses, or auditing laboratory practices when the QA/QC requirements are sufficient, but published in other parts of an organization's compendium rather than within the Part 136 method; or QA/QC instructions in a Part 136 method are insufficient.
Solutions to Analytical Chemistry Problems with Clean Water Act Methods (pdf) (1.34 MB, March 2007, 821-R-07-002)
Also known as the "Pumpkin Book"
Method Guidance and Recommendations for Whole Effluent Toxicity (WET) Testing (pdf) (246.49 KB, July 2000, 821-B-00-004)
Guidance and recommendations on the conduct of the approved WET test methods and interpretation of WET test results reported under the NPDES program

Clean Water Act Analytical Methods