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SAIC <br /> November 14,2012 <br /> John Yoakum <br /> San Joaquin County Environmental Health Department <br /> Site Mitigation Program <br /> 1868 East Hazelton Avenue <br /> Stockton,California 95205 <br /> Subject: Boring Permit Application,Ahem Road—Vernalis, San Joaquin County,CA <br /> Dear Mr.Yoakum: <br /> SAIC Energy,Environment and Infrastructure,LLC(SAIL)is submitting the attached boring <br /> permit application and supporting documentation for the advancement of three step-out soil <br /> borings at the Ahern Road—Vernalis site in Vernalis,California. The investigation is being <br /> conducted on behalf of Chevron Environmental Management Company(CEMC). <br /> The proposed investigation is a continuation of fieldwork conducted during September 2012(see <br /> the attached permit for reference). SAIC advanced the originally proposed borings(SB-4, S13-5, <br /> and S13-6 on the attached figure),but failed to achieve lateral delineation of affected soil and <br /> groundwater. SAIC will advance three additional borings(D,E&F)as part of the step-out <br /> investigation. SAIC would like to reserve the right to advance additional step-out borings under <br /> this permit,dependent on analytical results. <br /> The soil and groundwater investigation fieldwork has been tentatively scheduled for the week of <br /> December 3,2012. SAIC will confirm field dates with SJCEHD at least 48-hours prior to the <br /> initiation of fieldwork. Please contact me by phone(510-825-8519)or e-mail <br /> ( ehg lkesnasaic.com),if you have any questions. <br /> Sincerely, <br /> SAIC Energy,Environment& Infrastructure, LLC <br /> Sean Gehlke <br /> Project Geologist <br /> Enclosures: <br /> Well Permit Application <br /> LCD&MFR Forms <br /> Location Map <br /> Previously Approved Permit,Issued 8/13/2012 <br /> SAIC Energy,Environment&Infrastructure,LLC <br /> 1000 Broadway I Suite#675 1 Oakland,CA 9460711 tel:(510)466-7100 1 fax:(510)446-7919 1 saic.com\eeandi <br />