The following are general support documents for the Clean Water Act analytical methods program that are not analyte-specific.
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Stability of Pharmaceuticals, Personal Care Products, Steroids, and Hormones in Aqueous Samples, POTW Effluents, and Biosolids (PDF)(43 pp, 371 K,
Also known as "Holding Time Study"
Quality Assurance and Quality Control Requirements in Methods Not Published by EPA; Memorandum (PDF)(3 pp, 281 K,
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)(65 pp, 1 MB,
Also known as the "Pumpkin Book"
Method Guidance and Recommendations for Whole Effluent Toxicity (WET) Testing (PDF)(60 pp, 252 K,
Guidance and recommendations on the conduct of the approved WET test methods and interpretation of WET test results reported under the NPDES program