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09/16/2004 12:45 209-579 ^?25 MODESTO ATC PAGE 02 <br /> 1117 Lone palm Avenue. Suite B <br /> Modesto, CA 95351 <br /> http://www.ateessociates.com <br /> M%TC209.579.2221 <br /> ASSOCIATES INe . Fax 209.579.2225 <br /> September 16, 2004 <br /> 54.25847.0037 <br /> Ms. Vicki McCartney <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, CA 95202 <br /> Subject: Workplan. Addendum for Additional Subsurface Investigation at Former Cheaper <br /> Store#37, 15 East Grant Line Road, Tracy,California <br /> Dear Ms. McCartney: <br /> ATC Associates Inc. (ATC) bas prepared this workplan addendum, on behalf of The Customer <br /> Company for the performance of additional subsurface investigation activities at the above <br /> referenced site. ATC submitted a Warkplan for Additional Subsurface Investigation at Former <br /> Cheaper Store 037, 15 East Grant Line Road, Tracy, California, dated April 19, 2004 and this <br /> workplan was approved by Sang Joaquin County Environmental Health Department (EHD) in <br /> their correspondence dated July 12, 2004, <br /> During subsurface utility locating activities performed at the site on September 14, 2004, the <br /> proposed northern most cone penetrometer (CPT) boring location was determined to be <br /> inaccessible by the CPT drill rig. ATC contacted EHD and was advised by Ms. Victoria <br /> McCartney to either install two CPT borings east and west of the original proposed boring <br /> location or to install one CPT boring on the adjacent parcel north of the site. Based on site <br /> conditions, ATC proposes to install the northern. most CPT boring on the adjacent parcel, 2514 <br /> Holly Drive, owned by the Northside Assembly of God(Figure 2). <br /> ATC is requesting that EHD provide written approval of the proposed boring relocation to assist <br /> ATC in obtaining access to the adiacent parcel from the Northside Assembly of God. <br /> s:unvirommtal\25847\37Vcports\wkp.doc 1 <br /> ENY/RONNENTAL, GEOTECHNICAL AND AMTERIALS PROFESSIUMALS <br />