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Environmental Site Assessment

GSI designs site investigations to cost-effectively obtain the data needed for appropriate corrective action program in cost-effective manner; specializes in Risk-Based Corrective Action (RBCA) and Remediation by Natural Attenuation (RNA) programs; customizes investigations to site-specific conditions and remedial action objectives; manages hydrogeologic site investigations at large and complex facilities involving multiple individual contaminant sources; and performs accurate, high quality, and complete data acquisition safely and efficiently.

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Non-Aqueous Phase Liquids (NAPLs)

GSI designs and operates NAPL recovery systems; integrates NAPL management into RBCA and natural attenuation approaches to prevent unneeded NAPL recovery; understands and communicates how NAPL affects corrective action process at RCRA, CERCLA, UST, and Voluntary Corrective Action sites.

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Site Assessment

GSI designs site investigations to cost-effectively obtain the data needed for appropriate corrective action program in cost-effective manner; specializes in Risk-Based Corrective Action (RBCA) and Remediation by Natural Attenuation (RNA) programs; customizes investigations to site-specific conditions and remedial action objectives; manages hydrogeologic site investigations at large and complex facilities involving multiple individual contaminant sources; and performs accurate, high quality, and complete data acquisition safely and efficiently.

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Surface Water / Estuary Studies

GSI applies runoff and floodplain models to solve hydrologic problems; performs non-point source pollution studies; and provides services related to in-stream and estuarine quality.