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r ` �f <br /> FOOTHILL <br /> _ ENGINEERING <br /> ^ I r 2793 PADDY CREEK LANE LODE CA 95240 <br /> PH (209)368-9381 FAX (209) 367-1163 <br /> Mr Michael Infurna February 26, 1999 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 388 <br /> Stockton, CA 95201 � n , <br /> °r <br /> Subject Connell Motors 2211 N Wilson Way Stockton, CA 95205 � <br /> Site code 39-1304 <br /> RE Work Plan <br /> Dear Mr Infurna, <br /> Please find below the pro osed work plan for the vertical and horizontal delineation of the petroleum <br /> contaminated areas under and surrounding the fuel dispenser area at Connell Motors Also included are <br /> the QA/QC laboratory reports and the chain of custody for the over-excavation samples taken on <br /> 12/19/98 as requested in your letter of January 25,1999 <br /> HISTORY OF UST REMOVAL AND OVER-EXCAVATION <br /> On June 11, 1998,the three UST on this site were removed by Jim Thorpe Oil, Inc of Lodi,California <br /> under PHS/EHD permit and oversight As per the work plan for the removal, soil samples were <br /> extracted and analyzed for BTEX, TPHgas, TPHdiesel, and Oxygenates (see summary of results <br /> attached) The analysis indicated the soil under and near the dispensers was contaminated with both <br /> Gasoline and Diesel The soil underneath and surrounding the three UST's was analyzed as non-detect <br /> for all compounds analyzed The tank excavation was backfilled with onsite pea gravel <br /> Over-excavation of the dispenser area was started and suspended on December 10, 1998 with less than <br /> 50 % of the planned work completed The excavated area was backfilled with pea-gravel and the <br /> excavated soil was stockpiled on the site Work was suspended due to the discovery of a large volume <br /> of contaminated soil found below and adjacent to the pump islands The test results from Sherwood <br /> Labs indicated that the petroleum contamination was old and highly degraded Due to the extent of the <br /> petroleum contamination,the PHS-EHD ordered a delineation of the contamination plume and aground <br /> water investigation <br /> The following is a work plan developed to delineate the soil contamination in the fuel dispenser area <br /> 1 <br />