1. 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…

  2. 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…

  3. Ashmead Road Bridge Replacement

    This existing 58-foot-long steel I-beam bridge in Cheltenham Township was structurally deficient and needed to be replaced because of excessive deterioration. In fact, throughout the course of designing the new bridge, numerous emergency repairs were needed to keep the bridge in service. The bridge is in a high-traffic area prone to flooding, so extra caution…

  4. Rhode Island Row Solar Array

    A team of solar developers was looking to install rooftop and carport solar arrays on two mixed-use commercial buildings in downtown Washington, D.C. to benefit lower-income residents in the D.C. area. RETTEW was the ideal candidate to make this goal a reality because of our vast experience in designing solar arrays, as well as general…

  5. Hermitage Municipal Authority Low-Pressure Sewer System

    Sanitary surveys revealed that more than 40 percent of surveyed on-lot disposal systems on North Neshannock Road, North Darby Road, and South Darby Road in the City of Hermitage were classified as suspected or confirmed malfunctions according to Pennsylvania Department of Environmental Protection regulations. These results suggested untreated sewage was being discharged into “Waters of…

  6. Lefever Road Detention Basin Retrofit

    Rapho Township implemented a detention basin retrofit project on property they own that will reduce their sediment loading rates by 25,537 pounds per year, phosphorus rates by 10 pounds per year, and nitrogen rates by 336 pounds per year. This project achieves a significant portion of the Township’s required pollutant load reductions for their 2018…

  7. Paradise Township Sewage Collection System – Multiple Extensions

    RETTEW managed the design and construction of multiple extensions to the Paradise Township Sewer Authority’s sewage collection system. Each project was funded through the Community Development Block Grant program for low- to moderate-income residents. RETTEW’s services included survey, environmental clearance, design, permitting, bidding assistance, construction administration, construction resident project representation, and grant administration. The projects…

  8. Masonic Village Comprehensive Water Study

    RETTEW performed a study to evaluate the adequacy of the existing Masonic Village Elizabethtown campus water supply, treatment, and distribution systems. The study also included current regulatory permits for existing and additional residents and employees projected to be added over the next 15 years. The issues evaluated included the ability of the wells to provide…

  9. Harrisburg Area Community College Parking Lot Rehabilitation Plan

    RETTEW developed a parking lot rehabilitation plan for a 17-acre tract at the Harrisburg Area Community College’s (HACC) Harrisburg Campus. Prior to this project, a parking lot pavement evaluation and a geotechnical engineering investigation were performed to evaluate the conditions of the pavement and the subsurface area. RETTEW determined the parking lot rehabilitation required full-depth…

  10. Paradise Township Detention Basin Retrofit

    Paradise Township implemented a detention basin retrofit project that will reduce their sediment loading rates by 30,695 pounds per year, phosphorus rates by 12 pounds per year, and nitrogen rates by 362 pounds per year. This project achieves a significant portion of the Township’s required pollutant load reductions for their 2018 to 2023 MS4 Permit….

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Community Support

RETTEW Charitable Foundation Awards Grant to Good Karma Garage

RETTEW is excited to announce Good Karma Garage is the recipient of a $7,000 grant from the RETTEW…

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Services

Evolving With Our Clients and Technology

For the last decade, RETTEW has been providing North America’s largest flat-rolled steel producer with visual structural inspections…

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