Laserfiche WebLink
During a Geologic Investigation (Kleinfelder 1990), seven soil borings (B-1 <br /> through B-7) were advanced to depths ranging from 30 to 65 feet in the east, <br /> southeast, and southern areas of the site. The soils encountered in the seven <br /> borings consisted of cemented clay/claystone, cemented silt/siltstone, and <br /> cemented sand/sandstone with in-place hydraulic conductivities ranging from 10-3 <br /> to 10-5 cm/sec. Remolded soils had hydraulic conductivities ranging from 10-4 to <br /> 10"6 cm/sec. The results of the laboratory testing are tabulated in a report dated <br /> January 2, 1991-Plate 9 ana Appendix E). <br /> hard,in August 2004, the County GOI!eGted two bulk samples, at the IGGations shown <br /> on Plate 9. Sam! was being eXGavated ftern thus aFea fOF use as daily Gover <br /> mateFial at Module 1. The samples weFe GOI!eGted at a depth of approximately <br /> 15 feet below eFiginal gFade in a GUt slope wheFe the landfill was being modified <br /> FnedeFately eewaenteid FnodeFately weethererl waeideFately soft and eentainerd the <br /> ...vv.V.awa V.� VV,,,v„aV V, „VMV,aAa V,r YYVGaI,VIVLfj-! , <br /> unit extended to the hese of the e,,t in'diee}inn the unit was at least X10 feet it <br /> unit extended z <br /> , <br /> thickness at this IGGatien. The samples were s9flestedto evaluate sG4 <br /> , <br /> 86, and 90 peFGeRt GOFnpaGtien by ASTIVI rnethed D6084 G. The samples <br /> nm/con /A nnenidiv (�\ <br /> ^.4^.10.2.2 Groundwater€lew <br /> Groundwater flows generally north-to south at the site at a depth of between <br /> XX60 and 40XX ft MSL with gradient from north to south (Figure 12-XX). Resent <br /> rnE)RotGF*ng eveRtS show the depth to graundwateF was appFO)(OFnately 206 feet <br /> below gFOund 6kFfa6e-(bgs)i, MW 1, 2-55-feet gr OR 2R;and 270feetbgs; <br /> R <br /> MVV 3. Well GenstruGtoen details aFe shown On Table 4. I= GnitWing <br /> event, gmundwateF elevations w iately 49 feet above Fnean sea level <br /> (MSL) iR the up gradient well MW 1, 42 feet above MSL .n down gFadient well <br /> Foothill Sanitary Landfill Page 36 Public Works/Solid Waste <br /> Joint Technical Document County of San Joaquin-Revised 7/30/10 <br />