waste contaminated site News
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NRC Renews Contract for SwRI to Continue Operating CNWRA
The U.S. Nuclear Regulatory Commission (NRC) has renewed its contract with Southwest Research Institute® (SwRI®) for the fifth time to operate the Center for Nuclear Waste Regulatory Analyses (CNWRA®). The five-year contract, valued at almost $76 million, assures continuing technical assistance and research support to NRC activities related to storage, transportation, possible ...
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ASTM D5777 - 00(2011)e1 standard guide for using the seismic refraction method for subsurface investigation
This guide summarizes the equipment, field procedures, and interpretation methods used for the determination of the depth, thickness and the seismic velocity of subsurface soil and rock or engineered materials, using the seismic refraction method. Measurement of subsurface conditions by the seismic refraction method requires a seismic energy source, trigger cable (or radio link), geophones, ...
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