Groundwater collected from the Pollack St well system is not discharged directly to the Schuylkill River. Groundwater discharged from any remediation system is either processed through the facility’s wastewater treatment plant which operates under a National Pollutant Discharge Elimination System (NPDES) permit held by PES or discharged to the Philadelphia Water Department (PWD) sewer system via a Groundwater Discharge Permit held by Evergreen. Evergreen samples groundwater discharge to the PWD sewer per the permit requirements and the discharge from the facility’s wastewater treatment plant is sampled by PES in accordance with their NPDES permit.