NPDES WET Methodology Documents
Documents on NPDES WET methodology.
- Clarifications Regarding Toxicity Reduction and Identification Evaluations in the NPDES Program (pdf)
- Clarifications Regarding Toxicity Reduction and Identification Evaluations in the NPDES Program Memo (pdf)
- Clarifications Regarding Whole Effluent Toxicity Test Methods Recently Published at 40 CFR Part 136 and Guidance on Implementation of Whole Effluent Toxicity in Permits (pdf)
- Errata for the Effluent and Receiving Water Toxicity Testing Manuals (pdf)
- Generalized Methodology for Conducting Industrial Toxicity Reduction Evaluations (TREs) (pdf)
- Methods for Aquatic Toxicity Identification Evaluations: Phase I Toxicity Characterization Procedures Second Edition (pdf)
- Methods for Aquatic Toxicity Identification Evaluations: Phase II Toxicity Identification Procedures for Samples Exhibiting Acute and Chronic Toxicity (pdf)
- Methods for Aquatic Toxicity Identification Evaluations: Phase III Toxicity Confirmation Procedures for Samples Exhibiting Acute and Chronic Toxicity (pdf)
- Toxicity Identification Evaluation: Characterization of Chronically Toxic Effluents, Phase I (pdf)
- Marine Toxicity Identification Evaluation (TIE) Phase I Guidance Document (pdf)
- Manual for the Evaluation of Laboratories Performing Aquatic Toxicity Tests (pdf)