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' Work Plan-Soil and Groundwater Investigation <br /> Herman&Helen's Marina <br /> May 20, 1996 <br /> Paye 2 <br /> Petroleum staining and odors were noted in the soil beneath the former locations of the USTs. <br /> ' Groundwater was not encountered during the UST removal. Six (6) soil samples were collected by <br /> Condor from the UST excavation at depths of 9 to 12 feet below the ground surface (bgs). The <br /> ' samples were analyzed for TPH-G (gasoline), BTEX, TEPH (diesel), EDB (ethylene dibromide), and <br /> total lead. Laboratory analyses indicated elevated concentrations of TPH-G, TEPH, and BTEX <br /> ' constituents in the soil samples. For additional information, refer to Tank Pull Testing Results, <br /> prepared by Condor, dated November 18, 1991. <br /> ' At the direction of the PHS/EHD, Condor prepared a work plan to investigate the gasoline and <br /> ' diesel contamination associated with the former UST's (Soil and Groundwater Investigation Work <br /> Plan, dated May 30, 1995). The work plan was approved by the PHS/EHD and the Reclamation <br /> tDistrict #2029. <br /> ' On August 22, 1995, three (3) hydropunch boreholes (HP-1, HP-2, and HP-3) were drilled at <br /> the site (Figure 2, Appendix A). Ronald Rowe of the PHS/EHD was on site periodically to observe <br /> ' the fieldwork. Gilbert Cosio of Murray, Bums, and Kienlen Engineering was on site to observe the <br /> drilling activities as a Reclamation District representative. Two (2) of the hydropunch boreholes (HP- <br /> ' I and HP-2) were located on the levee and were drilled to depths of approximately 16 and 11 feet <br /> below the top of the levee (btl), respectively. The third hydropunch borehole (HP-3) was located <br /> ' below the levee and was drilled to a depth of approximately 6 feet below the ground surface (bgs). <br /> Soil samples were collected at five (5) foot intervals. Groundwater samples were collected using a <br /> Hydropunch II groundwater sampler. Gasoline odors were noted in each borehole. Laboratory <br /> ' analyses indicated concentrations of TPH-G and BTEX in the soil and groundwater samples analyzed <br /> from each borehole (see Tables 1 and 2, below). <br /> 1 <br /> 1 <br /> ' t� CONDOR <br />