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07= <br /> ,�IF <br /> , <br /> r � ^ <br /> al.5,R., 31' <br /> •Y.` w <br /> Chevron/w. Benjamin Halt Drive <br /> June 1990 <br /> Cuttings generated during drilling Will be placed in steel, <br /> 55-gallon drums and held on site. Between boreholes, all down- <br /> hole equipment will be cleaned using a pressure washer. Rinsate <br /> from this decontamination will be placed in 55-gallon steel drums <br /> and stockpiled on site. All wastes generated during this <br /> .� assessment will be disposed of in an appropriate, legal manner <br /> after laboratory analyses have determined if the waste must be <br /> n <br /> treated as a hazardous material. <br /> I <br /> Se-Lected soil samples will be laboratory analyzed for the <br /> presence of benzene, toluene, ethylbenzene, and xylenes (BTEX) , <br /> and for total petroleum hydrocarbons (TPH)-as-gasoline using <br /> modified U.S. Envir033mental Protection Agency (EPA) Methods <br /> ! 5030/8020/8015. At least one soil sample from each borehole will <br /> be analyzed. If field observations and/or PID readings indicate <br /> Possible adsorbed hydrocarbons in the encountered soils, <br /> additional samples may be analyzed. <br /> r <br /> Soil samples from above and below the water table may be <br /> collected for physical testing. Such testing could include <br /> grain <br /> size analyses, permeability, and/or porosity. Data from these <br /> tests could be used to assess the practicality of possible <br /> remediation strategies. <br /> Additional information on Groundwater Technology Standard <br /> Operating Procedures (SOPS) for this, and all phases of field <br /> work, is included in Appendix A. <br /> GROUNDWATER MONITORING WELL INSTALLATION <br /> The two boreholes will be completed as groundwater <br /> monitoring wells. Unless otherwise required; wells will be <br /> constructed of 2-inch-diameter, Schedule 40 <br /> polyvinyl chloride <br /> C_ GROUNDWATER <br /> TECHNOLOGY INC. <br />