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RETTEW was hired to address subsurface releases from underground gasoline storage tanks at a former Gulf service station. We conducted site characterization to locate the tanks and understand the contaminant spread, and we completed a comprehensive remediation pilot test, incorporating in situ chemical oxidation, soil vapor extraction, and air sparging. Our strategy involved excavating the…
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RETTEW addressed persistent groundwater contamination at a Pennsylvania Department of Transportation (PennDOT) maintenance facility, stemming from previous operations involving a diesel underground storage tank. Despite PennDOT’s prior attempts, achieving regulatory closure remained an obstacle for the site. Using advanced technology, RETTEW precisely mapped volatile organic compounds, creating a detailed 3D contamination model. This informed our…
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RETTEW conducted a site characterization and remedial action of a former automobile service and fueling station property acquired by the Lehigh-Northampton Airport Authority (LNAA). Upon acquisition, historical regulatory obligations related to a past underground storage tank closure were identified. RETTEW conducted a comprehensive site characterization and assessment that included 13 monitoring wells, numerous soil borings,…
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The Mon/Fayette Expressway system is a 25-year regional transportation improvement project aimed at providing continuous travel from I-68 in West Virginia north to I-376 in Monroeville, Pennsylvania. The final leg of the project, PA Route 51 to I-376, is a 14-mile extension of the 74-mile system that affords direct access to the eastern suburbs of…
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C&D Technologies was pursuing a potential property sale and required industrial decommissioning on a very strict budget. Previously functioning as a battery manufacturing plant, the location required complete decontamination of plant equipment, the facility, and the ground in advance of possible building demolition. The client needed the work completed quickly and without safety incident. Lead…
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An industrial client undergoing an ownership transition needed to provide lender-required environmental assessments as part of the loan application process. The subject facilities included more than 50 properties totaling approximately 1,300 acres in Pennsylvania, Maryland, Delaware, and New Jersey. Nine of the properties contained shipping/distribution centers, while the remaining properties were commercial, residential, and agricultural….
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Flowback (produced water) was impacting an active natural gas well pad. To properly address the release and determine the need for corrective actions, our client needed to first characterize the extent of the spill and evaluate remedial alternatives. RETTEW’s geologists, experienced in site characterization and remediation, provided firsthand knowledge of the locale and relevant regulations….
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When fugitive methane gas was detected close to a multi-unit apartment complex, the owner needed environmental consulting services to investigate an orphan natural gas well adjacent to the building. The well was previously discovered and plugged during construction of the apartment complex 12 years prior. However, during a routine service line inspection, natural gas was…
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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 and data gathering. However, the exact source(s) of the groundwater impacts had not been identified. RETTEW collaboratively assisted the Wyoming Department of Environmental Quality (WDEQ)…
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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 (BA) program to support these communities by helping local governments investigate, clean up, and reuse brownfield properties. The BA program provides technical assistance through Phase…
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Tell us about a hobby you’re passionate about outside of work. I belong to a volunteer women’s service…
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One of RETTEW’s Project Managers, Melissa Kelly, is participating as a mentor in the Lancaster Chamber of Commerce…
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