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TH1LL <br /> / ER1NG <br /> 1273NDP68-9381 <br /> CREK LANE LODI CA 95240 <br /> PH < 1 FAX (209) 367-1163 <br /> �C <br /> January 10, 2002 <br /> Mr Michael Infurna <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Ave Third Floor <br /> Stockton, CA 95202 <br /> Subject Connell Motor Truck Co - 2211 N Wilson Way Stockton CA 95205 <br /> Site Code 39-1304 Global ID T0607700812 <br /> RE Fourth Quarter 2001 Monitoring Well Sample Analysis Report <br /> Dear Mr Infurna <br /> • Please find below the Fourth Quarter 2001 Monitoring Well Sample Analysis Report of findings and <br /> rcconimendat ions for the above stated property <br /> HISTORY OF UST REMOVAL, OVER-EXCAVATION, AND PLUME DELINEATION <br /> On June 11, 1998 the three USTs on this site were removed by Jim Thorpe Oil, Inc of Lodi, California <br /> under PHS/EHD permit and oversight Asper the work plan for the removal,soil samples were extracted <br /> and analyzed for B l'EX TPHgas, TPHdiesel,and Oxygenates The analysis indicatcd the soil under and <br /> near the dispensers was contaminated with both gasoline and diesel Fhe 5011 Underneath and suirounding <br /> the three USTs was analyzed as non-detect for all LOMpounds I he tank excavation was back iiIled with <br /> onsite pea gravel <br /> Over-excavation of the dispenser area was started and suspended on December 10, 1 998 with less than 50% <br /> of the planned Nvork completed Fhe excavated area was backfilled with pea-gravel ani) the excavated soil <br /> was stockpiled on the site Work was suspended due to the discovery of large 4 oltnne of contaminated soil <br /> found bolo-,x and adjacent to the pump islands The test results from Sherwood Labs indicated that the <br /> petroleum contamination ,vas ol,I and highly degraded Due to the e'�tent of the petroleum contamination, <br /> the PHS-EFID ordered a delineation of the cont-jininatmg plume and a ground water investigation <br /> Vertical and Horizontal Delineation of Plume History <br /> Monitoring Wells M W#f 1,M W#2,and M W#3 were installed in September of 1999 to a depth of sixty feet <br /> Soil samples from the soil bores were extracted at five foot intervals fi om a depth often feet to sixty feet(see- <br /> site <br /> seesite map for location attacl)ed) All thi ee soil bores produced samples above detection levels for BETX alid <br /> TPHg and "I P1 Id (,,o-, Soil Sample fW_ap Attached) <br /> 1 <br />