Laserfiche WebLink
_• �rrr' <br /> Ca[ifomia <br /> f,a <br /> supplied the northwest fuel island, and two fuel islands located southeast of the new <br /> On January 7, 1989, the three sets of product lines were excavated. Approximately 60 <br /> �Ards of soil and backfill were excavated and stockpiled with the 100 cubic yards of soil excavated <br /> from the former tank.Iocation. Soil samples were taken from 2 feet below the surface at each fuel island, <br /> and were identified as T-1, T-2, and T-3 with sampling locations shown in Figure 2. The results of <br /> chemical analysis of the soil samples are presented in Table 3. Chemical analysis of soil samples collected <br /> from beneath the dispenser island (T-1, T-2, and T-3) indicated concentrations of TPH at 15.0, 24.0,.and <br /> 1,510.0 ppm, respectively. <br /> TABLE 3 <br /> Chemical Analysis of Soil Samples from <br /> the Product Line Trenches <br /> Concentrations in milligrams per kilogram/mg/kg (ppm) <br /> Organic <br /> Sample Date Approximate Ethyl- Lead <br /> 1D Collected Depth feet Benzene benzene Toluene Xvlenes TPHa EDBb (ppm) <br /> T-1 01/07/89 4 <0.001 0.080 0.045 0.174 15.0 <0.001 <0.05 <br /> T-2 01/07/89 4 <0.001 0.060 0.030 <0.238 24.0` <0.001 <0.05 <br /> T-3 01/07/89 4 <1.56 5.25 2.4 31.8 1,510.0r <0.001 <0.05 <br /> PL-4 01189 4 <0.001 <0.001 0.015 0.046 <10.0 <0.001 <0.05 <br /> PL-5 01/25/89 4 <0.001 <0.001 <0.001 <0.001 <10.0 <0.001 <0.05 <br /> PL-6 01/25189 4 <0.001 <0.001 0.012 0.029 <10.0 <0.001 <0.05 <br /> PL-7 01/25/89 4 <0.001 <0.001 <0.001 <0.001 <10.0 <0.001 <0.05 <br /> PL-8 01/25/89 4 <0.001 <0.001 <0.001 <0.001 <10.0 <0.001 <0.05 <br /> PL-9 01125/89 4 <0.001 <0.001 <0.001 <0.001 <10.0 <0.001 <0.05 <br /> 'Total petroleum hydrocarbons. <br /> bEthylene Dibromide. <br /> Identified as gasoline. <br /> On January 25, 1989, six additional soil samples were taken at 20-foot intervals within the product line <br /> trenches. The chemical analyses of the soil samples are presented in Table 2. These soil samples were E <br /> identified as PL-4 through PL-9 with sampling locations shown its Figure 2. Concentrations of TPH were <br /> below the analytical detection limit of 10 ppm. Concentrations of toluene and xylenes were detected in <br /> soil samples PL-4 and PL-6. The analyses reported were 0.015 and 0.012 ppm toluene and 0.046 and 0.029 <br /> ppm xylenes, respectively. <br />