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• <br /> GETTLER - RYAN INC. <br /> March 26, 2001 <br /> G-R Job #280045 <br /> Mr Nick Nickerson <br /> Unocal - DBGIAMG <br /> 8788 Elk Grove Boulevard <br /> Building 3, Suite 15 <br /> Elk Grove, California 95624 <br /> RE: First Quarter Event of February 26 and 27, 2001 <br /> Groundwater Monitoring & Sampling Report <br /> Former Unocal Service Station#0187 <br /> 437 East Miner Avenue <br /> Stockton, California <br /> Dear Mr Nickerson <br /> This report documents the most recent groundwater monitoring and sampling event performed by Gettler-Ryan <br /> Inc (G-R) at the referenced site All field work was conducted in accordance with G-R Standard Operating <br /> Procedure- Groundwater Sampling (attached) <br /> MStatic groundwater levels were measured and all wells were checked for the presence of separate-phase <br /> hydrocarbons Separate-phase hydrocarbons were not present in the wells Static water level data and <br /> groundwater elevations are summarized in Table 1 A Potentiometric Maps are included as Figures 1, 2 and 3 <br /> Groundwater samples were collected from the monitoring wells as specified by G-R Standard Operating <br /> Procedure - Groundwater Sampling (attached) The field data sheets are also attached The samples were <br /> analyzed by Sequoia Analytical Analytical results are summarized in Tables 1 through 5 Concentration Maps <br /> are included as Figures 3, 5 and 6 Chain of custody documents and laboratory analytical reports are also <br /> attached <br /> Sincerely, <br /> Lam'n a'I ,t WN, �rGR GFS <br /> Deanna L Harding Gam' G J <br /> roJec Coordinator <br /> No 6882 <br /> Dou s Lee <br /> Senior Geologist, R G No 6882 Fe <br /> 0 <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925) 551 - 7555 <br />