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11 <br /> I 1 <br /> Ms Linda Turkatte <br /> Page 2 <br /> Samples were placed on ice and transported under chain of custody to Argon Laboratories {DHS <br /> #1873} where they were analyzed for BTEX and TPHg using EPA methods 8020 and modified <br /> 8015, respectively Recent analytical results of groundwater samples are summarized in Table <br /> 2 Attachment B contains laboratory reports and chain of custody documentation j <br /> EIevated levels of petroleum hydrocarbons wire detected in groundwater samples collected from <br /> all wells, except MW 11 and MW 12 located east of the former USTs The highest <br /> concentrations of TPHg and BTEX were detected in samples collected from wells MW-2 and <br /> MW-13, located southeast and east, respectively, of the former USTs <br /> Recommendations <br /> Continue quarterly monitonng and sample-ig in order to evaluate the extent of gasoline <br /> hydrocarbons in groundwater <br /> The next sampling event is scheduled for May 1996 Your office will be provided 48-hours <br /> notice of any field work <br /> Please call if you have any questions regarding this quarterly monitoring and sampling event <br /> Sincerely, <br /> Ground Zero Analysis, Inc <br /> I Jeanne Buckthal � Gf� <br /> Staff Geologist o <br /> ) <br /> GREGORY P <br /> * STAHL i <br /> No. 5023 <br /> Gregory P Stahl, RG 5023 ;'� <br /> CA Certified Hydrogeologist 264 <br /> Attachments <br /> PC Mr Carl Knowles <br /> Mr Kerry Zimmerman, Law Offices of Riddle & Isola <br /> Ms Elizabeth Thayer, CRWQCB Sacramento <br /> grourdii r0.k11gml995 <br />