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i 7 � <br /> i i 7910 Lower Sammen!o Road.Stodtan,Cnllf-la A <br /> pelta Projm No.404&147 <br /> � i ^' <br /> f 1� 5 <br /> t <br /> Three product lines supplied the northwest fuel island,and two.fuel islands;orated southeast of the new <br /> j .7 tank excavation. On January 7, 1989, the three sets of product lines were excavated. Approximately 60 <br /> cubic yards of soil and backfill were excavated and stockpiled with the 100 cubic yards of soil excavated <br /> from the former tank location. 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 2The results of. # <br /> 4 chemical analysis of the soil samples are presented in Table 3. Chemical analysis of shit samples collected <br /> i <br /> from beneath the dispenser island (T-1,T-2,and T-3)indicated concentrations of TPH at 15.0,24.0,and �' �;�€ A <br /> 1,510.0 ppm, respectivcly. , <br /> I ai y 4 <br /> II it ,- �,. F ���t� ��• <br /> TABLE 3 ' y <br /> Chemical Analysis of Soil Samples from i. <br /> the Product Line Trenches <br /> 1 _ - Concentrations in nic3ligtams per kilogmm/mglkg (ppm) <br /> Sample Date Approximate Ethyl- Lead <br /> 58 � Death ffxtl 13enune iKnune Toluene �CYa411eTom' <br /> �b s jQlzml- ; <br /> Y. <br /> 4 <0.001 0.080 0.045 0.174 I5.0° Q00I � <br /> T-1 01107/89 r • <br /> <0.001 0.060 0.030 <0.238 24.0`- 10.001 ` <br /> ��0.05 e �: <br /> 4 " X1.56 525 -°'2.4 31.8 1,510.0 x0.001 y<0.05 $ <br /> 0lM189 4 <0.001 _<0.001 0015 •0.046 <10.0 t0.0o1 6 +F <br /> P1.15 0125189 4 ' <0.001 <0.001 <0.001 <0.001 <10.0 �QOoI <br /> PLS 010189 4 <0.001 <0.001 0.012 0.029 <1QD .0.001 <br /> PL-7 010/89 4 <0.001 <0.001 <0.001 <0.001 <10.0 <Q001e0,05 5 •_. ! ` f<' <br /> PL-8 41RSB9 4 <0.001 <Q001 <0.001 <0.001 <10.0 ' c0.001 X0.05 , r <br /> PIf9 0=99 4 <0.001 <0.001 <0.091 <0.001; <10.0 aQ001 11-;<0.05 <br /> l a s <br /> J <br /> *Told petroleum hydrocarbons <br /> V bEth a <br /> a Dibromid <br /> ?V1i17�+'�7, <br /> on January 2`, 1989,sbt additional soil samples were taken at 20-foot intervals within the product line <br /> trenches. The chemical analyses of the soil samples arc presented in Table 2. These soil samples were <br /> y <br /> Identified as PL 4 through PL with sampling locations shown in Figure 2 Concentrations of <br /> TP were =5-.r � ;.. ��E t <br /> below the analytical detection limit of 10 ppm. Concentrations of toluene and xylenes were detected in t d ; st' <br /> ' `4 <br /> soil samples PLA and PL-& The analyses reported were 0.015 and 0.012 ppm toluene and 0.046 and 0.029 <br /> ppra xylenes,respectively. <br /> Cd <br /> s <br /> i � F $_ . � .lv .. _ S�S �. '} t .- -�� ice•./ �.�.!' <br /> �1 <br />