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Advance <br /> GeoEnviron mental, Inc. <br /> 08 <br /> 8 �i f � (� <br /> j 25 February 200 ..'. u LECEN Di <br /> AGE-NC Project.No. 97-0230 <br /> FEB 2 5 2008 <br /> Ms. Vicki McCartney El�VlRLti r�QFP HEALTH <br /> San Joaquin County Environmental Health Department <br /> PERMIT/SERV <br /> Vl��5 ' <br /> 600 East Main Street ' <br /> Stockton, California 95202 ' <br /> 4 <br /> Subject: Revision to Work Plan Addendum-3rd Quarter 2007,dated 20 September 2007 <br /> PACIFIC PRIDE -WEST LANE <br /> 3.230 North West Lane, Stockton, California!; <br /> i <br /> 3 <br /> 9 <br /> Dear Ms. McCartney: ' <br /> i <br /> On behalf of Mr.David Atwater of Van De Pol Enterprises Inc.;Advanced GeoEnvironmental,Inc. <br /> (AGE)has prepared this revision to Work Plan Addendum -3rd; Quarter 2007,dated 20 September <br /> 2007.The scope of work for the above work plan included conducting a soil vapor investigation with <br /> the advancement of three(3)soil borings to depths of 5 feet below surface grade(bsg)and collection <br /> of soil-gas samples. The work plan addendum had stated that soil-gas borings would be advanced <br /> utilizing a cone penetration testing (CPT) drill rig. However,�Idue to space limitations at the site, <br /> AGE is requesting to utilize a much smaller,van-mounted Geoprobe 5400 direct-push probing unit j <br /> (equipped with 1-2:5-inch,stainless steel,hollow probing rods)instead ofthe above referenced CPT drill <br /> rig.Procedures for.collection of soil-gas samples will be followed as described in the above referenced work <br /> plan addendum.Ifyou have any questions or comments,please contlact the undersigned at(209)467-1006. <br /> - s <br /> Sincerely, i <br /> jt <br /> Advanced GeoErivironmental,Inc. ` <br /> Timothy J. Mellak, <br /> Project Geologist;.` f <br /> enclosure <br /> cc: Mr. Jim Barton, California Regional Water Quality Control':Board-Central Valley Region <br /> Mr. David Atwater,Van De Pol Enterprises Inc. <br /> s <br /> 7 <br /> 837 Shaw Road, Stockton,California 95215 i <br /> Telephone(209)467-1006 Fax(209)467-1118 E <br />