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;W <br /> { <br /> MIA <br /> " <br /> Blockbuster V deo!1.'ell"'Submarine <br /> Site Assessment/Remedial Recomme7114ati?ns <br /> Page 3 <br /> s-, <br /> It was decided that since the excavator was on site to continue investigation near <br /> epth of <br /> nk area <br /> the fuel island, that we would ere-excavate done with tile tile waste oil lresuits showinto a g a level <br /> 1.5 feet and take another camp <br /> of 3400 PPM of oil at 15 feet. Pic}iteral or vertic,I definition of that area was <br /> made, as the building on site is ovcs the contaminated area to the west. <br /> ildi <br /> The waste oil fill line is s also under Curs�ufl�nw waste oil targ and atto as <br /> y sot-removed_ until demolition of the <br /> and disposed of by Oscar Ericson, as a liazardous waste. <br /> 3.4 Spoils Pile <br /> on site and covered with a <br /> The spoils Pile of contaminated soil., is stockpiledIAL <br /> tration of contamination is 4 Prcis of soil is <br /> plastic tarp. The average concen <br /> primarily kerosene. The q oils pile consists of approximately 80 ya <br /> The soils, on site, are clays and silty clays. Tile soils at 22 feet, near the corner, <br /> are a very hard, dense clay. <br /> 3.5 Site Geoiogi, <br /> Soils underlying the site are recent basin deposits of the,Sacramento-San Ioaquin <br /> Delta. Excavaled soils were clays (CL) and silty Clays(ML/CL:)- <br /> Ground water levels beneath the sire were ourccned from monitor well T, <br /> s, Their publication, entitled <br /> b of the California Department of NN ntcr Resources, April, 1990", shows <br /> "Historical Ground Water Levels In San Toaquin County, <br /> the followng water table elevations for monitor wells near the site: <br /> S ren Difference <br /> ►Fell N �83 Fall S9 <br /> O1N/06E- -2 l.2 8.4 <br /> 03K01 _18,8 <br /> O1N1O6E- -1912 -24.2 5.0 <br /> 10801 <br /> Average -25.7 <br /> Elevation -19.0 <br /> Surface elevation, at this site, is -t-12 feet MSI. (USES Topo Map)• Depth to <br /> _..._ _...----. Spring and_37.7 feet in Fall, based -- - - - -- - <br /> ground water is approximately-31 0 feet-in P g- <br /> on 1999 measurements. Annual precipitation is about 15.0 inches. <br />