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4KaGETTLER - RYAN INC. <br /> December 28, 2001 <br /> G-R Job #280045 <br /> Mr Nick Nickerson Pagel of 2 <br /> Unocal -DBG/AMG <br /> 8788 Elk Grove Boulevard <br /> Building 3, Suite 15 <br /> Elk Grove, California 95624 <br /> RE- Fourth Quarter Event of November 26, 27, and 28, 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 Inc <br /> (G-R)at the referenced site All field work was conducted in accordance with G-R Standard Operating Procedure <br /> - Groundwater Sampling (attached) <br /> . Static groundwater levels were measured and all wells were checked for the presence of separate-phase hydrocarbons <br /> Separate-phase hydrocarbons were not present in the wells Static water level data and groundwater elevations are <br /> summarized in Table 1 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 Procedure <br /> -Groundwater Sampling(attached) The field data sheets are also attached The samples were analyzed by Sequoia <br /> Analytical Analytical results are summarized in Tables i through 5 Concentration Maps are included as Figures <br /> 4, 5 and 6 Chain of custody documents and laboratory analytical reports are also attached <br /> Si cerely, <br /> Uk <br /> Deanna L Harding QQ.of S S��N4 <br /> Protect Coordinator �O Op KED t�, <br /> i ,may, No C 55734 <br /> er Exp. <br /> Hagop Kevork <br /> P E No C55734 CIVIC- �\ <br /> qTF OF C A\- <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925) 551 -7555 <br />