APE alkylphenols APEO alkylphenol ethoxylates BOD biological oxygen demand COD chemical oxygen demand MSDS Material Safety Data Sheets N.D. non detect PFC per- and poly- fluorinated chemicals PFOA perfluorooctanoic acid PFOS perfluorooctanesulfonic acid PPB parts per billion PPE personal protective equipment PPM parts per million RSL Restricted Substance List SCCP Short-Chained Chlorinated Paraffin SDS Safety Data Sheets TSS total suspended solids μg/L micrograms per liter μg/mL micrograms per milliliter ZDHC Zero Discharge of Hazardous Chemicals