How does a facility demonstrate that a pesticide active ingredient does not pass through the POTW?
As defined at 40 CFR 403.3, pass-through occurs when a POTW violates their NPDES permit. Pass-through of pesticide active ingredients cannot be shown in this manner unless the POTW has limits for specific pesticide active ingredients or has whole effluent toxicity limits (and a toxicity event can be tied to one or more pesticide active ingredients). The POTW can also make a separate determination whether pesticide active ingredients that are discharged from industrial users are pollutants that could potentially pass through. In this analysis, the POTW measures the level of pesticide active ingredient in both the POTW’s influent and effluent. The pesticide active ingredient must be detected in the influent to determine whether pass through occurs. In addition, the POTW can decide whether the presence of the pesticide active ingredient adversely impacts the POTW’s treatment operations. If the POTW determines that the pesticide active ingredient either passes through or adversely impacts
Related Questions
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