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GeoHydrogic Consultants, Inc. <br /> Boring/Well Number: MW-11 Page. 1 of -2 <br /> — <br /> Project: TOC#172 Owner: Thrifty Oil Company <br /> Location: 7647 Pacific Avenue,Stockton,CA Project Number: 1453 <br /> Date Drilled: 0210E108 Total Depth of Hole: 58 ft <br /> Surface Elevation: Not Surveyed Depth to Water: 45 ft <br /> Screen: DIA. 0.01 Length: 20 Slot Size: 0.01 <br /> Casing: DIA. 2" Length: 38 Type: 2"Casing <br /> Drilling Company: Test America Drilling Drill Method: Hollow Stem Auger <br /> Driller: Mark Log By: Daniel Bergin <br /> a m <br /> m Soil Description a <br /> Well Construction ~ a E m m <br /> a va <br /> d ui m 0 a <br /> 12"Well Monument <br /> P-gravel <br /> Concrete <br /> 2"Sch,40 PVC <br /> Casing <br /> 5 <br /> P-gravel <br /> 10 <br /> P-gravel <br /> 15 <br /> P-gravel <br /> 8`Diameter <br /> Borehole <br /> 8:30 20 <br /> Silt-ML-dark yellowish brown:(10YR,416),trace clay, <br /> 7 medium plasticity,moist,very stiff <br /> 14 4.30 UST310-22 <br /> 15 <br /> Porlrenrl Cement <br /> 8:37 25 <br /> co Sandy Silt-ML-Dark yellowish brown:(10YR,414),slight 7.8 <br /> 15 trace of clay,10-20%fine grain sand,remainder silt, <br /> so nonplastic,slightly moist,dense <br /> 8:43 30 <br /> 10 Silt-ML-dark yellowish brown:(10YR,416),trace clay, 11.2 <br /> 12 nonplastic,slightly moist,hard <br /> 23 <br /> r Bentonite Pellets <br /> 9:0435 Silt-ML-dark yBllowish brown:(10YR,414),trace fine esesr <br /> 8 sand,very low plasticity,moist, hard,petroleum odor OVER <br /> 12 (moderate) <br /> 20 <br />