SOUTHWEST RESEARCH INSTITUTE

Geochemistry Services

	SwRI reactive transport studies of the Pena Blanca Natural Analog Site (Mexico) include field and laboratory investigations at a wide range of scales as well as computer modeling of the alteration of uraninite (gray/black colors) to uranyl oxyhydroxides and uranyl silicates (yellows) as oxidizing fluids advance (from left to right in this photomicrograph; ~7 micron field of view).
	SwRI characterizes the geochemistry, hydrogeology, and structural geology of the Edwards Aquifer in Texas to enable governing authorities to more effectively manage critical water resources.

Geochemistry services at Southwest Research Institute (SwRI) include field investigations, laboratory studies, and modeling of:

• Geochemical solubilities

• Complexation

• Colloid formation, transport, and filtering

• Reactive transport

• Sorption

• Co-precipitation

• Ion exchange

• Thermodynamic interactions

• Kinetic interactions

• Mass transfer interactions

Extensive experience in investigating and evaluating environmental mobility of a wide range of contaminants is applied successfully to diverse projects, including:

• Nuclear waste disposal

• In-situ copper extraction

• Uranium mining and leaching of mill tailings

• Risk assessment

• Decommissioning of industrial facilities

• Groundwater desalination

Multidisciplinary teams are formed to implement National Environmental Policy Act (NEPA) requirements, such as preparing environmental assessments and environmental impact statements.

For more information about geochemistry services at SwRI or how you can contract with SwRI, please contact Dr. English C. Pearcy at epearcy@swri.org or (210)

522-5540.

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Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

September 19, 2008