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This project at the Sussex Square Apartments in Plymouth Township addressed a deteriorating retaining wall that separated an apartment complex parking area and a tributary to Plymouth Creek. The existing retaining wall sustained damage over time, including scour, undermining, and exposure of the wall’s concrete toe. In addition, the northern 40 feet of the retaining…
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The Little Conowingo Creek stream restoration project for the Donegal Chapter of Trout Unlimited addressed severe erosion and habitat deficiencies along a stream in Fulton Township. RETTEW prepared a comprehensive natural stream design solution involving channel realignment and the strategic installation of various structures, including rock cross vanes, rock weirs, boulder walls, rock deflectors, and…
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The Kinseyville Road Bridge superstructure replacement addressed critical safety concerns stemming from the deteriorating condition of the existing bridge and streambank at Reynolds Run on Kinseyville Road in Little Britain Township. The original bridge was a non-composite prestressed adjacent box-beam that displayed evident signs of degradation, including hairline cracks and moisture stains, necessitating urgent replacement…
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The Pennsylvania Department of Transportation (PennDOT) needed their guidelines for preparing waterway and environmental permits organized efficiently to improve the permitting process. In addition, guidelines for preparing earth disturbance and waterway permits were either absent or not easily found. This resulted in inconsistent permit applications, technical deficiency letters from permitting agencies, and missed project schedules….
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Radnor Township wanted a better understanding of how the conversion of a parking lot into a parking garage, dormitory, and accessory buildings on the Villanova University campus might impact Valley Run. The Township asked RETTEW, as a neutral, third party, to assess the physical conditions and health of the stream and provide results in a…
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The Pennsylvania Turnpike Commission (PTC) replaced the Allegheny River Bridge as part of a roadway reconstruction project. To comply with the U.S. Army Corp of Engineers and Pennsylvania Department of Environmental Protection (PA DEP) regulations, PTC needed to construct and maintain 1.8 acres of replacement wetlands to satisfy the wetland mitigation requirements associated with aquatic…
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A natural gas client experienced delays with permit reviews submitted by other consulting firms because of concerns with the quality and reliability of their wetland data. Permit applications submitted by RETTEW for the client did not have similar delays in review. As a result, RETTEW provided quality control (QC) field reviews of stream and wetland…
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Marshalls Creek, a rural village located in the heart of the Pocono Mountains, faced increased growth pressures as it rapidly grew in popularity as both a resort area and an attractive bedroom community for New York City. As a result, the Pennsylvania Department of Transportation needed to find a solution to very serious traffic congestion…
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A client, under an agreement with the West Virginia Department of Natural Resources (WVDNR), was required to properly manage sensitive water systems and prevent contamination by aquatic invasive species (AIS) such as the zebra mussel and pathogens like the largemouth bass virus. The maintenance costs associated with keeping water intakes clean are significant — not…
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As a precursor to identify natural gas resources, state and federal agencies required a natural gas client to obtain environmental and cultural resource clearances prior to conducting seismic surveys. The client was unfamiliar with the complexities, coordination effort, and details involved with the clearance process, and hired RETTEW for guidance and project execution. RETTEW completed…
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Join us for an informative and engaging event as part of OSHA’s 2024 National Safety Stand-Down. This hybrid gathering…
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