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Work Plan-Soil and Groundwater Investigation <br /> CSUS—Multi-Campus Regional Center <br /> June 21,2000 <br /> Page-2- <br /> 199 8, <br /> 21998, describing the UST removal activities, soil sampling activities, and laboratory analytical results of <br /> the soil samples. <br /> Field observations and the laboratory analytical results of the soil samples indicated that further <br /> f <br /> subsurface investigation of the TKb and TKl l excavations was not necessary. Field observations and <br /> the laboratory analytical results of the soil samples collected from beneath the former location ofTK10, <br /> however, indicated the presence of diesel range petroleum hydrocarbons. In a letter dated April 28, <br /> 1 2000, the San Joaquin County PHS/EHD requested the submittal of a work plan to investigate thellateral <br /> and vertical extent of contamination at the site. <br /> 3. FIELD AND ANALYTICAL METHODS <br /> I 3.1 STTE PREPARATION <br /> Condor will complete a drilling permit application and obtain the required permit from the San Joaquin 1 <br /> County PHS/EHD prior to the fieldwork. If necessary, Condor will complete an encroachment permit 1 <br /> application and obtain the permit from the City of Stockton Public Works Department. Condor will <br /> j schedule and coordinate all field activities through CSUS. The proposed boring locations will be marked <br /> With white paint and Underground Service Alert (USA),will be notified at least 72 hours in advance of <br /> j the fieldwork to locate and identify underground utilities in and near the work area. Because companies <br /> contacted by USA may not identify utilities past private property lines and into the site, however, it is the <br /> responsibility of the property owner to identify site utilities. <br /> 3.2 GEOPROBE BORINGS <br /> +i Prior to commencement of fieldwork, a tailgate safety meeting will be held'and a site-specific Health and <br /> Safety Plan (Appendix B) will be discussed with, and presented to, all field personnel for their <br /> signatures. Five direct push borings will be installed to a maximum depth of 30 feet below'ground ; <br /> surface (bgs). The proposed direct push boring locations are shown in.Figure 2, Appendix A.` It is <br /> a <br /> assumed that groundwater samples will be collected from the borings if encountered above 30 feet bgs. <br /> { It is possible that the borings will be terminated at refusal before groundwater is encountered. If i <br /> groundwater is encountered, groundwater samples will;be collected. Soil samples will generally be <br /> n <br /> W CONDOR <br />