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(COPI <br /> 1932 EL PINAL <br /> SUSD CORPORATE YARD <br /> Page 2 <br /> OI/03/97 Transferred piping and removed USTs to Erickson, Inc., Richmond, CA. <br /> 02/03/97 Transferred soil stockpile to Forward Inc.Landfill,Manteca, CA. ffI <br /> 06/25/97 Filed UARs and Prop-65s. Analytical results of petroleum hydrocarbons in the soil f <br /> samples were as follows: <br /> UST#1 <br /> @ 14' below 691 ppm Total Petroleum Hydrocarbons as Gasoline(TPH-G) <br /> surface grade(bsg) 1.70 ppm Xylenes i <br /> UST#7 @ 17'bsg 250 ppm Total Petroleum Hydrocarbons as Diesel(TPH-D), <br /> 0.280 ppm Ethylbenzene, 2.270 ppm Xylenes <br /> UST#7 @ 18'bsg 6,150 ppm TPH-D, 0.536 ppm Ethylbenzene, 2.740 ppm 4 <br /> Xylenes fI` <br /> Pipeline Sample P-17 1,550 ppm TPH-D <br /> 02/16/99 Two soil borings(SB 1, SB2)were advanced to 20' bsg in the area of the former remote <br /> fill pipeline's fill-end. Collected soil samples at varying depths for analyses. <br /> 02/23/99 Three soil borings(SB3, SB4, SB5)were advanced to 36.5'bsg in the vicinity of the <br /> former diesel USTs(UST#5,#7, #8). Collected soil samples at varying depths for <br /> analyses. <br /> 02/24/99 Four soil borings(SB6, SB7, SB8, SB9) were advanced to 36.5'bsg and 41.5'bsg in the <br /> vicinity of the former gasoline USTs (UST#1,#2). Collected soil samples at varying ' <br /> depths for analyses. <br /> 06/09/99 PHS/EHD received analytical results of the soil samples. The results were non-detected <br /> for TPH-G, TPH-D, BTEX, and oxygenates except the following: <br /> SBI @ 10'bsg 3.1 ppm TPH-D <br /> SB 1 @ 20'bsg 6.0 ppm TPH-D <br /> S132 @ 20'bsg 7.5 ppm TPH-D <br /> SB3-@ 10'bsg 16,700 ppm TPH-D <br /> SB3.@ 20.5' bsg 96.7 ppm TPH-D <br /> 09/23/99 Two angle soil borings were advanced to 25'bsg beneath existing trailer offices in the [ <br /> vicinity of the UST#6 and#7 and east of SB3. Soil samples of varying depths were- <br /> collected for analyses. <br /> i <br /> 10/26/99 PHS/EHD received analytical results of angle boring soil samples. The results were: <br /> GPI @ 15' bsg 1.69 ppm TPH-D <br /> GPI @ 20' bsg 1.25 ppm TPH-D <br /> GP2 @ 15' bsg 1.00 ppm TPH-D <br /> GP2 @ 20' bsg 2.57ppm TPH-D, 0.0058 ppm Xylenes. <br /> The results were all non-detected for TPH-G,BTEX,and MTBE <br /> 12/31/99 PHS/EHD recommends this site for closure. <br /> f <br /> i <br /> f <br />