1. Chiques Creek Pollutant Reduction and Manheim Loop Greenway

    Manheim Borough identified a 3,040-LF floodplain restoration/sediment removal/riparian buffer project along a section of the Chiques Creek in Memorial Park to comply with current MS4 Permit requirements. The project is expected to reduce the existing sediment load to Chiques Creek by approximately 136,000 pounds per year and achieve the required 10 percent sediment reduction required…

  2. South Hanover Township Patriot Park Master Site Plan

    RETTEW developed a master site plan for South Hanover Township’s Patriot Park on the Township’s newly acquired property. The park is located between the Emergency Services Center and the municipal offices, and sits on top of a closed landfill. The park’s amenities include a paved multi-use trail; nature trails; and an outdoor educational area, which…

  3. Farmdale-Ferndale Storm Sewer Improvements

    West Hempfield Township was looking to pave the streets in one of its neighborhoods as part of a capital improvement project. The neighborhood was built in the 1970s and the existing stormwater infrastructure was also in need of repair and/or replacement. RETTEW worked with the Township to analyze the existing pavement, curbing, and stormwater facilities…

  4. Conewago Township Park Master Plan

    RETTEW developed a master site plan for Conewago Township’s community park for an undeveloped tract of approximately 103 acres to include both passive and active recreation facilities. Key facilities included pavilions and restrooms; tot lots; a parking lot; a 60-foot softball and Little League baseball field; two U10 soccer fields; a paved multipurpose/exercise trail; basketball,…

  5. Piedmont Lake Boat Launch Ramp Parking Area

    RETTEW was selected by the Muskingum Watershed Conservancy District (MWCD) to design a parking lot and boat launch expansion project at Piedmont Lake. The goal of the project is to provide 50 parking spaces for trailers and additional regular vehicle spaces, handicap-accessible parking, restroom facilities, ADA-compliant ramps and access, bioretention areas, lighting design, and a…

  6. Murry Ridge Park Green Infrastructure Improvements

    RETTEW worked with West Hempfield Township to develop a comprehensive, cost-effective strategy to achieve required sediment reduction loads in compliance with their 2018-2023 MS4 Permit requirements. This strategy included a variety of green infrastructure best management practices to reduce stormwater rates and volumes, increase groundwater supplies, filter stormwater pollutants, increase biodiversity and habitat for native…

  7. Manor Township Detention Basin Retrofit

    As an MS4 Permittee, Manor Township is required to reduce stormwater pollutants to maintain compliance with their MS4 Permit requirements and to improve water quality in local streams and the Chesapeake Bay. The Township owns six dry detention basins that will provide significant pollutant reductions after being retrofitted into bioretention basins. Two of the existing…

  8. Churchyard Cemetery Mapping

    A church was concerned that its walled cemetery excluded some very old unmarked graves, likely containing wooden caskets, given their age. To resolve this uncertainty, RETTEW conducted a ground penetrating radar (GPR) survey to detect any anomalies that might represent unmarked burials. RETTEW scanned the areas just outside the cemetery boundary walls with a digital…

  9. Asylum Run Sewer Interceptor Replacement

    Penbrook Borough’s existing 12-inch vitrified clay pipe (VCP) gravity sewer line was constructed in the 1930s and conveyed sewage flow from both Penbrook Borough and Susquehanna Township to the Capital Region Water sanitary sewer collection and conveyance system, a National Pollutant Discharge Elimination System (NPDES)-permitted system. Lack of maintenance and known structural inadequacies of the…

  10. West Hempfield Township Pollutant Reduction Plan

    As an MS4 permittee, West Hempfield Township needed to submit a pollutant reduction plan (PRP) to comply with the Pennsylvania Department of Environmental Protection’s MS4 Program requirements. The Township needed to determine the existing pollutant loading rates attributed to the MS4-regulated area, and identify stormwater best management practices (BMP) to reduce sediment, phosphorus, and nitrogen…

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Awards, Community Support

Penn State Swimmer Named 2022-23 RETTEW Endowed Scholarship Winner

RETTEW is proud to announce the recipient of the 2022-23 RETTEW Endowed Scholarship for Intercollegiate Athletics is Lachlan…

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RETTEW Charitable Foundation Awards Grant for What If 101 School Program

The RETTEW Charitable Foundation awarded a $5,000 grant to TomTod Ideas for What If 101, a weekly program…

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