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GROUND ZERO ANALYSIS,;IN,C: R <br /> �D <br /> F <br /> 1714 Main Street <br /> Escalon,California 95320 ENVIRONMENT HEALTH <br /> Telephone:(209)838-9888 PERIOIT,/s 1Ry' <br /> Facsimile:(209)838-9883 " � S i <br /> September 19,2007 <br /> Mr.Mike Infurna <br /> � EI <br /> San Joaquin County Environmental fHealtti Department <br /> 600 East Main Street <br /> Stockton,CA 95202 <br /> Subject: Site Status Update: <br /> Former Reeve's ExXon,'2360 East Street,Tracy,California(Figure 1) <br /> Dear Mr. Infuina: « <br /> Today Joe Vasquez of Ground Zero Analysis met with Mike Park of the Chevron Pipe line Company to <br /> discuss soil boring locations relative'to,the Chevron/Texaco Bay Area Product Line(BAPL). The boring in <br /> question is SB23, which was proposed in Ground Zero's Workplan for Additional Subsurface Investigation E <br /> dated February 13, 2007. The proposed location for the soil boring is in the center turn lane of East Grant <br /> Line Road and can be seen on Figure 2." Mr. Park stated that he would not allow us to advance the soil <br /> boring at its current location, that .it is in;Fact:fllegal to advance a boring within 10 feet of a "National <br /> Security Pipeline,"unless the pipelihe'has been exposed for the duration of the work. Because the proposed <br /> soil boring:is located in the center of Grant Line Road we do not believe it is feasible to perform an <br /> additional excavation to expose the pipeline:; Additionally, if the boring is moved the required 10 feet away <br /> from the BAPL the new location will; be located in a lane of traffic; which will require an updated <br /> encroachment permit and a new traffic�'coritr.'ol plan,not to mention block a lane of traffic. <br /> Thus we propose to proceed with the other site activities proposed in the aforementioned workplan. Field <br /> work has been scheduled for September 26;'2007. However,we proposed to postpone SB23 until results of <br /> the proposed investigation have been evaluated. <br /> Sincerely, <br /> Ground Zero Analysis,Inc. <br /> Joseph L.Vasque <br /> Staff Geologist <br /> Gregory P. Stahl PG.5023 <br /> g <br /> CA Certified Hydrogeologist No. 264 ' <br /> cc: John Pcstana Trust a <br /> John Lane,PG <br /> James Barton,CRWQCB <br /> G:IGPOLJNDZEIPESTANAIPESTANA.03611nfiilnaL.etter.doc- <br />