The Marine Corps Base Quantico needed to perform soil borings in 21 locations on its wastewater treatment plant premises. However, the presence of underground utilities posed a risk of damage...
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An old earthen dam displayed signs of seepage. One state agency wanted to breach and rebuild it immediately, and another agency wanted to repair it. RETTEW was tasked with detecting...
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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...
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Millersville University was in need of a single firm to supply services for various campus projects to enhance campus amenities and create safe, inviting spaces for the school’s students, faculty,...
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The U.S. Fish and Wildlife Service (USFWS) requested updated topographic mapping of 11,000 acres for future land planning and management. The widely varied terrain and density of vegetation across this...
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Located in South Central Pennsylvania along the Susquehanna River, Lancaster County is more than 950 square miles, with a population of more than 507,000 residents throughout 60 municipalities. The County...
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A tetrachloroethylene (PCE) plume is present in the groundwater beneath the northern portion of downtown Casper, the extents of which had been assessed throughout nearly 20 years of site characterization...
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New York City depends on the Catskill Watershed for the majority of its potable water supply. In 1997, the U.S. Environmental Protection Agency issued a filtration avoidance determination to New...
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Many Wyoming communities have brownfield properties that are abandoned or underutilized because of known or suspected environmental contamination. The Wyoming Department of Environmental Quality (WDEQ) has established the Brownfields Assistance...
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The Pennsylvania Department of Conservation and Natural Resources (PA DCNR) needed a day use facility for visitors to its 780-acre Worlds End State Park, one of PA DCNR’s premier recreational...
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