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 RESPEC has worked on several aspects of groundwater characterization for a proposed in situ recovery uranium facility in the southwestern Black Hills. As in situ mining occurs in the saturated Inyan Kara aquifer, used for drinking water throughout the area, groundwater became the most important aspect of this permitting project. RESPEC analyzed historical aquifer test data and collaborated with the client on two new aquifer pump tests; RESPEC was involved in every stage of these tests from design, drilling oversight, test implementation, and data analysis.
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RESPEC is currently working with local and state agencies to develop a comprehensive and updated hydrogeologic study of the Belle Fourche watershed. The primary task is to compile a database of available geologic and hydrologic information and present that information to the public via an interactive mapping website.
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 The city of Rapid City is a Phase II National Pollutant Discharge Elimination System (NPDES) community, required to have an MS4 permit. As part of their NPDES permit activities, the City sponsored training sessions for local engineers, home builders, developers, and City staff focused on erosion control, primarily for construction and development activities.
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 The Cheyenne River in western South Dakota is currently listed as impaired for total suspended solids (TSS) and fecal coliform bacteria. A Total Maximum Daily Load (TMDL) assessment project for the Cheyenne River Watershed in western South Dakota was initiated in the spring of 2007.
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 A bacteria Total Maximum Daily Load (TMDL) assessment is being completed on four reaches of the Big Sioux River from Dell Rapids to Brandon, South Dakota. The project area is unique in that it encompasses a mixture of rich agricultural land as well as the densely populated area within and surrounding the city of Sioux Falls, a Phase I National Pollutant Discharge Elimination System (NPDES) community.
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