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Proposal-Soil and Groundwater Investigation <br /> Hannan&Helen's Marina <br /> May 23, 1995 <br /> Page-2. <br /> diesel contamination has been encountered beneath the former UST locations. The proposed soil and <br /> groundwater investigation will include the drilling of three (3) hydropunch sampling points oriented <br /> around the former UST locations. The proposed locations of the hydropunch borings are shown on <br /> Figure 1, attached. Soil and hydropunch groundwater samples will be collected from the borings for <br /> field screening and chemical analyses. Based on the results of the soil and groundwater sampling, <br /> Condor will prepare recommendations for additional site investigation and/or site cleanup, as <br /> warranted. <br /> PROPOSED METHODOLOGY <br /> The proposed investigation is summarized in the following task list: <br /> TASK 1 - WORK PLAN PREPARATION: <br /> Prepare a site specific Health and Safety Plan (H&S). Prepare a project Work Plan. A <br /> preliminary copy of the Work Plan will be presented to the client for approval prior to final <br /> submission. Submit the Work Plan, H&S Plan, and work schedule to the SJCEHD and the <br /> CRWQCB for review. If requested by the SJCEHD or the CRWQCB, adjustments will be <br /> made to the Work Plan for final approval. Drilling permits will be obtained from the <br /> SJCEHD prior to fieldwork. The local reclamation district or other applicable agencies will be <br /> contacted for approval prior to conducting drilling at the site. Encroachment permitting and <br /> special permit requirements will be billed on a time and materials basis and are not included in <br /> this estimate. Underground Service Alert will be notified to identify and locate underground <br /> utilities at the site prior to drilling. <br /> TASK 2 - FIELDWORK: <br /> The fieldwork will include the drilling of three (3) hydropunch sampling points at the <br /> proposed locations shown on Figure 1, attached. The proposed borings/hydropunch will be <br /> drilled using 6-inch diameter, continuous flight, hollow stem auger. Two (2) of the proposed <br /> hydropunch boreholes will be located on the levee and will be drilled to a depth of <br /> approximately 25 feet below the top of the levee or until groundwater is encountered. The <br /> remaining hydropunch sampling point will be located below the levee and will be drilled to a <br /> depth of approximately 10 feet below the ground surface. Soil samples will be collected at <br /> five (5) foot intervals for geological logging and field screening. Three (3) soil samples (1 <br /> sample per borehole) will be retained for laboratory analyses. A groundwater sample will be <br /> collected from each of the boreholes using the Hydropunch II groundwater sampling tool. <br /> Upon completion of the groundwater sampling, the boreholes will be filled with neat cement <br /> containing 3-5% bentonite. <br /> N&-o <br /> aw• <br /> 3 L,y CONDOR <br /> 7 <br />