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gp,.._27_gg 04: 21P GHH En0eering Inc <br /> P.02 <br /> W ENGINEERING, INC. <br /> wRCE n2701 Lie n537"l <br /> I)ecember 28. 1997 <br /> Mr. Srfltandi Dusappa <br /> USA Gasoline Corporation <br /> 30101 Agoura Court, Suite 200 <br /> Agoura Hills,California 91301 <br /> SuBjEC7r: EXCAVATION AND PRODUCT LINE.SOIL. SAMPLING <br /> USA STATION#110 <br /> 2132 EAST MARIPOSA ROAD <br /> STOCKTON,CALIFORNIA <br /> Dear Mr. Dasappa: <br /> This letter presents the soil sampling analytical resulrs associated with the November, 1997 <br /> underground storage tank (UST) and fuel distribution line replacement activities at the subject <br /> site, as shown on Figures 1 and 2- <br /> Sampling Activities <br /> Can November 17, 1997,three 12,0(1(1-gallon unleaded.premium and regular gasoline US'C's and <br /> one 3,000-gallon diesel LAST were removed by USA Gasoline Corporation (USA). Excavation <br /> soil sample locations and depths are shown on Figure 3. <br /> The excavation consisted of die removal of four USTs and associated product lines on November <br /> 17, through 24, 1997. A GHH representative collected soil samples from the product line <br /> trenches and the area exposed during the UST removals. Soil sarnpits collected from the product <br /> lines were collected at the depths and locations shown on Figure 3. The samples were collected <br /> at locations requested by Ms. Letisha Briggs with San Joaquin County Public Health Services. A <br /> total of six soil sunptcS were collected alone the product line(P-1 through P-6) anti seven soil <br /> samples were collected from below the dispenser plumbing (D-1 through D-7). <br /> Approximately 400 cubic yams of soil were excavated during the removal of the US-C's. The <br /> excavated soif was placed on visquene for classification,prior to disposal. '11re stockpiled soil <br /> was covered with visquene following the completion of excavation activities. The excavated soil <br /> was disposed of by USA at Forward Landfill between November 17, and 24. 1997. <br /> Twelve soil samples were coliected from the UST excavatiou spoils pile un November 17, 1997 <br /> and composited into three Samples. The samples were analyzed to decide an appriprare Soil <br /> disposition. <br /> • <br /> 80144 Old Auburn Rvad.Suitc L.Citrus I lcipdtU.CA 95610 (1116)723--,645 (800)377-t739 fay(')10»713-70,98 <br />