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Statttec <br /> PEA WORKPLAN <br /> Proposed Lodi Energy Center Site <br /> Lodi,California <br /> • TPH-oil was detected in the same samples analyzed for PAHs, but at relatively low <br /> concentrations (131 to 2,200 mg/kg). <br /> • One sample was selected for VOC analysis from the northern portion of the Site, and <br /> VOCs were not detected. <br /> In general, most of the constituent concentrations detected in both the shallow and deep samples <br /> from the same boring displayed reduced concentrations in the deep sample relative to the shallow <br /> sample. This is especially true for the PAHs and less so for the metals. In summary, the <br /> presence of PAHs in the shallow soil appears to be the primary health concern, based on data <br /> collected to date. <br /> 4.2 GROUNDWATER DATA <br /> One groundwater monitoring well designated as WSM-3 is present on the southern portion of <br /> the Site. This well was installed in April 1989 to a depth of 20 ft bgs on behalf of the City of Lodi <br /> for monitoring associated with the WPCF. The well is constructed with a 2-inch PVC casing and <br /> a 15-foot 0.020-inch slotted screen extending from 5 to 20 ft bgs. Shallow groundwater in this <br /> well is analyzed for water quality parameters including selected metals, nutrients, bacteria, and <br /> physical parameters in connection with the WPCF's National Pollution Discharge Elimination <br /> System permit. Groundwater has not been analyzed for constituents proposed for analysis in <br /> this Workplan. <br /> PEA WP-Lodi 7 August 13,2009 <br />