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_ � r <br /> 2.0 Scope of Work <br /> This work plan addresses proposed procedures for further evaluating groundwater quality on the <br /> site. Planned activities include drilling and installation of three groundwater monitoring wells, <br /> well development and groundwater sampling and,well sample analysis. <br /> 3.0 Field Investigation <br /> Groundwater assessment activities will include the drilling of three soil borings and the <br /> installation of groundwater monitoring wells in the borings. The potential well locations were <br /> selected based on anticipated groundwater flow direction (to the north). Proposed well locations <br /> are depicted in Figure 7. <br /> 3.1 Underground Utility Location and Health and Safety <br /> Prior to initiation of field activities a site-specific health and safety plan will be developed to <br /> outline safety measures to be implemented during field activities. Underground Service Alert <br /> (USA)will be contacted and notified of the anticipated drilling locations and date of field <br /> activities. Additionally, an independent utility locating service will be subcontracted to further <br /> s <br /> assist in locating utilities within the anticipated drilling locations. <br /> 3.2 Soil Borings <br /> �1 The borings will be drilled by a C-57 licensed driller using 8-inch hollow stem augers. Drilling <br /> equipment will be steam cleaned to reduce the potential for contaminant introduction and sample <br /> cross-contamination. All equipment rinsate, generated bysteamcleaning will be containerized in <br /> marked 55-gallon drums, and securely stored at the site. <br /> I � <br /> During the drilling, soil samples will be collected at five-foot intervals from surface grade to the <br /> total depth of drilling and logged using a modern version of the Unified Soil Classification <br /> j System by a Shaw field geologist, working under the supervision of a California registered <br /> geologist. Soil at each depth interval will be evaluated for relative hydrocarbon content using a <br /> photoionization detector (PID). Samples collected for laboratory analysis will be sealed with <br /> plastic caps over Teflon film, taped, labeled, placed on ice and sent to a state-certified laboratory <br />'I under legal chain of custody. <br /> CNCD\04-28/03\SHARE\UST\03-0027.doc 3 - 4 <br /> { <br /> I <br /> E <br /> i <br /> 4 <br />