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_ate " 1 <br /> NO'f 07 '90 12:41 EXCELTf"4/SF P.3 ' <br /> llrs`� I <br /> ADDENDUM B <br /> TO <br /> PHASE Ili WORK PLAN <br /> QUIK STOP NO. 132 <br /> 3555 WEST HAMMER LANE <br /> STOCKTON, CALIFORNIA <br /> This addendum is an extension of the work plan for Ouik Stop No. 132 submitted <br /> August 28, 1990. All sampling, soils handling and site safety protocol as noted in the <br /> original work plan will be followed duringiwork under Addendum B. <br /> SCOPE OF WORK <br /> Exceltech, Inc. proposes further excavation at Quik Stop No. 132, 3555 West Hammer <br /> Lane, Stockton, California (Figure 1). The purpose of the excavation is to remove all <br /> contaminated soil from the site. The excavation will include work in the tank area and <br /> also further work in the pump island area.' The maximum depth to be excavated will be <br /> 16 feet. Figure 2 indicates the maximum area to be excavated. <br /> SAMPLING <br /> Two samples will be taken from each wall one foot from the bottom of the excavation. <br /> The four samples that could not be taken from underneath the tanks during the tank pull <br /> will be taken. The two samples that could not be taken during the north tank dispenser <br /> excavation will be taken. Contamination will be identified using an OVA meter. <br /> t Excavation will continue until OVA reading's indicate no contamination. Samples will <br /> then be taken and sent to a state-certified laboratory. The results from the laboratory <br /> will determine whether further excavation is required. <br /> I <br /> SCHEDULE <br /> Exceltech is prepared to perform the worklonce approval is received from the San <br /> Joaquin Health District. The excavation is expected to take two to three nonconsecutive <br /> days, as laboratory results will be completed within 24 hours. <br /> i <br /> r <br />