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- 8-INCH DIA. <br />BOREHOLE <br />CEMENT <br />GROUT <br />2-INCH <br />DIAMETER <br />SCH. 40 <br />BLANK PVC <br />CASING <br />BENTONITE <br />SEAL <br />2/12 SAND <br />2-INCH <br />DIAMETER <br />PERFORATED <br />PVC CASING <br />(0.010-Inch <br />slots) <br />NTONITE <br />20 <br />•••• L.,"? • . , <br />Graphic <br />Log <br />SILT (ML) with fine sand, light gray mottled tan, dry, firr- <br />CLAYEY SILT (ML), dark gray, moist, firm, plastic. <br />Same as above. <br />SILT (ML), dark gray, trace clay, moist, firm. <br />Very fine SAND (SVV), gray, wet, firm. <br />Same as above. <br />BOTTOM OF 8-INCH DIAMETER BORING AT 15 FEET. <br />Bottom of 8-inch diameter sample boring at 25 feet. <br />WELL CONSTRUCTION <br />CHRISTv BOX <br />LOCKING CAP <br />HEADSPACE LITHOLOGY SAMPLE DATA MEASUREMENTS <br />Description <br />Sample Penetration Field <br />No. and Rate Screening <br />Interval (Blows/ft.) (ppm) <br />7 <br />Well elevation: <br />Date well drilled: <br />Drilling company: <br />Drilled by: <br />Sampling Method: <br />Geologist: <br /> <br />EXPLANATION <br /> Clay <br />Silt <br />Sand <br />Gravel <br /> <br />November 21, 1997 <br />Spectrum <br />Dave Gonzales <br />Randy Horton <br />Hollow-Stem Auger <br />R. Greentelder <br /> <br />Modified California Sampler <br /> <br />Water level at time of drilling <br />Static water level <br />Approved by: <br /> <br />WELL CONSTRUCTION AND LITHOLOGY FOR WELL W-120 (page 1 of ) <br />11 Tetra Tech EM Inc. <br />NCTS STOCKTON <br />Site IAS-08 <br />(069-15560201) W-120.CDFi 033099jsc.PHB