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1160 West Yosemite Avenue <br /> Page 3 of 3 <br /> Cambria proposed to analyze soil and groundwater samples collected from both CPT borings <br /> for TPHg, BTEX, and 1,2-DCA, but not for MTBE and TBA. Although'MTBE has-not been <br /> detected in any soil or groundwater sample's collected at this site, TBA, a breakdown product <br /> of MTBE, has been detected in a number of.soil and groundwater samples; therefore, EHD <br /> directs that you add MTBE and TBA to the analytical list proposed by Cambria. <br /> Based on the revisions stated above, EHD approves the work plan for the advancement of two <br /> CPT borings.,. Submit an access agreement, and boring permit applications and permit fees of <br /> $89 per parcel to EHD by May 18, 2007. Notify EHD at least 72 hours prior to commencing <br /> e contact Vicki McCartney at 209 468 3456 orymccartne s'cehd.com <br /> the fieldwork: Pleas y ( ) y�a <br /> if you have any questions regarding this letter. <br /> Donna Heran, REHS, Director <br /> jEnvironmental Health Department <br /> f Victoria L. McCartney, Senior REHS Nuel C. Henderson, Jr., PG 3 <br /> Unit IV-Site Mitigation Engineering Geologist <br /> Unit N= Site Mitigation <br /> c: Mike Murphy - Cambria <br /> James L.L. Barton, PG- CVRWQCB <br /> i <br /> i <br /> i <br /> t <br /> i <br /> i <br />