SECTION 252:690-3-39. Endpoint and test failure criteria for acute tests

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The endpoint for routine acute WET testing and retesting is the LC50. Acute test failure is greater than or equal to 50% mortality to a test species, as specified in OAC 252:690-3-29. Statistical analysis must be consistent with the methods described in the documents referenced in OAC 252:690-3-29. Where a WET limit is established, it is expressed as an LC50 effluent concentration and must be greater than 100% (>100%).

[Source: Added at 19 Ok Reg 1721, eff 6-13-02; Amended at 26 Ok Reg 1962, eff 7-1-09]

                    
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