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Mr Michael Infurna <br /> Page 3 <br /> TPHg, BTEX and TPHd have not been detected in wells MWI, MW2, MW4 and MW5 since <br /> sampling began in those wells MTBE was detected in well MW4 for the first time, which is <br /> currently upgradient of the source area Cumulative site data indicate that contaminant <br /> concentrations are generally decreasing and the contamination plume is localized in the vicinity of <br /> well MW3 The source of MTBE detected in well MW4 is unknown <br /> The next round of groundwater sampling is scheduled for February 2003 You will be provided <br /> with a minimum of 48 hours notice prior to conducting fieldwork <br /> If you have any questions or comments please contact Ground Zero at your convenience <br /> Respectfully, <br /> Grou Zer is, Inc <br /> . � D GFa <br /> arvey, �C, ZO <br /> Staff Geologist 4,� C�u7 <br /> GREGORY P. � <br /> �r, 4L STAFL <br /> Gregory P Stahl, RG 5023 No. 5023 <br /> CA Certified Hydrogeologist No 264 <br /> 9lF DF CA1_IE��� <br /> Attachments <br /> cc Mr Norm Crum, Woolsey Oil, Inc <br /> Ms Karen Collins, Environmental Closures, Inc <br /> Mr Marty Hartzell, RWQCB <br /> Mr Richard McPherson, Property Owner <br /> N%GZA FSISYS011Data1GROUNDZE%WOOLSEY CfMQMR12002WQM2002 doe <br />