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Hazardous Waste Cleanup: Marcus Hook Wastewater Treatment Facility (MHPI) in Marcus Hook, Pennsylvania

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Cleanup Status

In August 1994, EPA determined that the Human Health Exposures Under Control and the Migration of Contaminated Groundwater Environmental Indicators had been met.

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Site Description

Interactive Map of Marcus Hook Wastewater Treatment Facility (MHPI), Marcus Hook, Pennsylvania


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DELCORA’s Western Regional Treatment Plant (WRTP), built in 1974, was originally designed to treat 44 million gallons per day (MGD) and is currently rated for 50 MGD.  Approximately a third of the plant’s flow is from Sun Oil’s Marcus Hook Refinery and Kimberly-Clark’s Chester Mill.  The plant receives flow from and the Authority owns and maintains 126 miles of gravity lines and three miles of force mains which includes the local collection systems of the City of Chester, the Boroughs of Parkside, Trainer, and Upland, and portions of Chester Township.  The City of Chester’s collection system is a system that combines storm water and sanitary sewer systems with 27 combined sewer overflow chambers.  Other flow contributors to WRTP are the Southern Delaware and Central Delaware County Authorities, as well as portions of the Boroughs of Marcus Hook, Rose Valley and Brookhaven, as well as Nether Providence Township.

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Contaminants at this Facility

 Marcus Hook Processing Company was a large quantity hazardous waste generator (LQG) until 1994.

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Institutional and Engineering Controls at this Facility

The need for institutional controls has yet to be determined.

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Land Reuse Information at this Facility

The site under continued use.

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Site Responsibility at this Facility

Resource Conservation and Recovery Act (RCRA) Corrective Action activities at this facility have been conducted under the direction of EPA Region 3. 

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