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Clean Water Act Analytical Methods

Chronic Toxicity - Marine and Estuarine WET Methods

Chronic Toxicity to Marine and Estuarine Organisms

""This manual describes six short-term (one-hour to nine-day) methods for estimating the chronic toxicity of effluents and receiving waters to five species. These rules do not apply to discharges into marine waters of the Pacific Ocean. The methods are approved under Clean Water Act section 304(h) and specified at 40 CFR 136.3, Table I–A.

The complete manual and individual method documents are provided. The individual methods are included in the manual.

Errata sheet (2016)

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