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SITE LOCATION <br /> Lawrence Livermore National Laboratory (Site 300), Corral Hollow <br /> Road, Building 834 Complex, Tracy, California <br /> SCOPE OF WORK <br /> Underground storage tank (UST) 834-D1 U1 , southwest of Building <br /> 834A, will be closed by excavation and removal. The site for <br /> excavation will be cordoned off for the protection of other LLNL <br /> personnel. Asphalt surfacing above the tank will be removed. Solid <br /> carbon dioxide (dry ice) will be introduced into the tank to displace <br /> oxygen within the tank. When the oxygen level within the tank is at <br /> or below 5%, the tank will be removed along with the piping. The <br /> tank and the piping will be transported as hazardous waste to a <br /> disposal facility. If a concrete anchor pad is present beneath the <br /> tank, it will be removed as part of this tank closure. Soil samples <br /> will be collected by LLNL's Environmental Protection Department <br /> (EPD) for laboratory analysis. Soil will be stockpiled on and covered <br /> by polyethylene sheets. The excavation, trenches and stockpiled soil <br /> will be secured with barricades pending the analysis of the soil <br /> samples and subsequent review of the laboratory results by the LLNL <br /> EPD. <br /> ON-SITE ORGANIZATION <br /> Site Safety Officer (SSO): <br /> Gabe Osbourn <br /> Responsible for implementing the project and obtaining any <br /> necessary personnel or supplies to complete the project safely <br /> and in a timely manner. <br /> • Monitors adherence to the SHASP and halts site operations if <br /> the SHASP is being violated or if a hazardous condition arises <br /> at the site. <br /> Contractors (Company) <br /> (Supervisor) <br /> (Workers) NM <br /> (Company) <br /> (Supervisor) <br /> (Workers) <br /> D-2 <br />