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owl 6ETTLER - RYANINC. <br /> September 18, 2001 <br /> G-R Job#280045 <br /> Page 1 of 2 <br /> Mr Nick Nickerson <br /> Unocal - DBG/AMG <br /> 8788 Elk Grove Boulevard <br /> Building 3, Suite 15 <br /> Elk Grove, California 95624 <br /> RE, Third Quarter Event of August 13, 14, and 15,2001 <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 l Potentiometne 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 1 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 /> Sincerely, <br /> ' QR[3F�SS�U,y <br /> Deanna L Harding ��o mop KEV� <br /> Protect Coordinator � f mak, <br /> t � No C 55734 M <br /> • r * EXE <br /> Hagop Kevork LPA Cl1/1L <br /> P E No C55734 OF C AOF�� <br /> is <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 - 7555 <br />