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The proposed project will divert the existing domestic sewage from East Whiteland Township's Malvern Hunt Wastewater Treatment Plant (WWTP) to the existing pubic sewer along Chester Valley Trail for treatment at Valley Forge Sewer Authority's WWTP. The facilities associated with the wastewater treatment process will be abandoned and National Pollution Discharge Elimination System (NPDES) permit will be cancelled. The influent pump station in the Malvern Hunt Subdivision will remain and the force main will be redirected to the existing public sewer system.
The Malvern Hunt WWTP started operation in 2000 under NPDES Permit No. PA 1599418. The facility was constructed by the developer (Cutler Group) solely for the Malvern Hunt development. Ownership was transferred from the developer to East Whiteland Township in 2007. Public sewer was installed adjacent to the WWTP in 2010.
The treatment process consists of screening, aerobic treatment, solid-liquid separation, and decanting with disposal to a spray field. The current permit has an expiration date of November 2021. The facility discharges treated wastewater to a 60-acre spray field. The WWTP is permitted for an average daily flow of 105,000 GPD. Since 2015, peak influent flows have been metered at 52, 567 GPD. The influent pumping capacity has a peak flow rating of 300 GPM.
The project will comply with all requirements set out in the Department's Sewage Treatment Facility Closure documentation, including but not limited to de-energizing and securing the site.
Visit Sewage Treatment Facility Closure Plan to view details.