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Depth, <br />feet <br />CHRISTY BOX LOCKING CAP Sample <br />No. and <br />Interval <br />Penetration Field <br />Rate Screening <br />(Blows/ft.) (ppm) <br />EXPLANATION <br />Clay <br />F-77. Silt <br />Sand <br />Gravel <br />December 3, 1997 <br />Spectrum <br />Dave Gonzales <br />Bob Duvall <br />Hollow-Stem Auger <br />Don R. Braun <br />Well elevation: <br />Date well drilled: <br />Drilling company: <br />Drilled by: <br />Sampling Method: <br />Geologist: <br />Approved by: <br />V Water level at time of drilling <br />Modified California Sampler <br />Static water level <br />NCTS STOCKTON <br />Site IAS-08 Imit Tetra Tech EM Inc. <br />WELL CONSTRUCTION LITHO LOGY HEADSPACE SAMPLE DATA MEASUREMENTS <br />Description <br />Grass and weed cover, <br />Organic CLAY (CL/CH), black, grayish brown and light <br />yellowish brown, very moist, soft. <br />Organic CLAY (CUCH). saturated, soft, multi-colored, black <br />grayish brown mottled with orange and dark grayish brown. <br />Organic black and dark gray clay, saturated, <br />CLAY (CH), light bluish gray, with vertical roots/rootlets, trace <br />caliche, very stiff, very moist. <br />BOTTOM OF 8-INCH DIAMETER BORING AT 10 FEET. <br />Graphic <br />Log <br />14.4 <br />14.9 <br />16.4 <br />Bottom of 8-inch diameter sample boring at 11.5 feet. <br />WELL CONSTRUCTION AND LITHOLOGY FOR WELL P-179 wage 1 oil) <br />(069-15580201) P-179.CDR 033099isc FHB <br />"..""qF=1 <br />8-INCH <br />BOREHOLE <br />CEMENT <br />GROUT <br />2-INCH <br />DIAMETER <br />SCH. 40 <br />BLANK PVC <br />CASING <br />r2R o'L.seg — BENTONITE <br />SEAL <br />#2/12 SAND <br />2-INCH <br />DIAMETER <br />PERFORATED <br />PVC CASING <br />(0.010-inch <br />slots) <br />10