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From Science to Sotutiuns'M <br /> January 30, 2008 <br /> Mr. Michael Infurna .1AN S 12Qn8 <br /> San Joaquin County <br /> Environmental Heath Department EPJWlRDn&JEfJ T HEALT,y <br /> 304 E Weber Avenue, 3rd Floor A�4F1�f tIu�C11�1�,vf <br /> Stockton, California 95202-2708 <br /> Re: Permit Application for Geopr oring Installation 2-9 <br /> Mountain House Developmen #6 9t2,0 <br /> Mountain House California 9 4 Mou , <br /> Dear Mr. Infurna: <br /> At the request of Chevron Environmental Management Company (Chevron EMC), <br /> Science Applications International Corporation (SAIC) has prepared these permit <br /> applications for the installation of nine Geoprobe borings at the above referenced site. <br /> The borings are located on County Assessor Parcel Numbers (APN#) 209-150-27 and <br /> 209-150-17. The latter of which is in the Union Pacific Rail Road (UPRR) Right of Way <br /> (ROW). An access agreement between Chevron EMC and UPRR has been obtained and <br /> is enclosed. <br /> As you may recall, boring permits for the installation of an additional eighteen Geoprobe° <br /> borings associated with this project was issued by the San Joaquin County Environmental <br /> Health Department (SJCEHD) on October 10, 2007. However, the Geoprobe° borings <br /> were not installed as site access agreements for the remaining two off-site properties <br /> (APN#'s 209-150-27 and 209-150-17) were pending. Consequently, site access has been <br /> granted and the additional eighteen Geoprobe°borings will also be installed as the permit <br /> remains valid as it expires one year from its issue date (October 10, 2007). In addition, <br /> an encroachment permit for accessing the West Byron Road ROW and a traffic control <br /> plan has been enclosed. <br /> In summary, SAIC plans to install 27 Geoprobe°borings up to a depth of 40 feet below <br /> ground surface (bgs) during drilling activities at the site. Soil and groundwater samples <br /> will be collected from the Geoprobe° borings. Destruction of the borings will be in <br /> accordance with San Joaquin County guidelines. The driller for this project is RSI <br /> Drilling, C57 #802-334. The Licensed Contractor's Declaration is included. SAIC <br /> requests that the approved permit be sent to Larry Silva, at SAIC, 3800 Watt Ave, Suite <br /> 210, Sacramento, CA 95821. <br /> 3800 Watt Avenue,Suite#210,Sacramento, CA 95821(916),974-8600-Fax:(916)979-3735 <br />