Why is it necessary to evaluate the wastewater matrix, particularly as it pertains to inert ingredients that may be present in the wastewater?
Inert ingredients are covered in discharges from PFPR operations if they are also priority pollutants. However, the reason EPA suggests evaluating the wastewater matrix during the P2 audit is to identify possible contaminants in wastewater that may hinder effective treatment of pesticide active ingredients or priority pollutants. In these cases, the wastewater may require pretreatment in order to allow the treatment system to effectively remove the pesticide active ingredients.
