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Drilling Log <br /> GROUNDWATER Monitoring — <br /> �-�- TECHNOLOGY o ltoring Wel! MW 12 <br /> Project Chevron - Stockton Owner Chevron US A Products Co See Site Map <br /> Location 45 East Hardino Wav Project No 02070 3393Date dulled OB/29/..3 a For Boring Location <br /> Surface Eley dotal Hole Depth 665 11 Diameter 71n ft COMMENTS <br /> Top of Casing Water Level Initial 52 ft Static <br /> Screen Dia 2 in Length 35 0 Type/Size 0 020 in <br /> Casing Dia 2 in Length 30 ft Type Sched 40 PVC <br /> Filter Pack Material h3 Sand Rig/Core Type Cs7 /S lit spoon <br /> Drilling Company S0111 Ex Services Method H0110w stem auoer Permit f <br /> Driller Mrke Duffv Log By Rol Hertato <br /> Checked 8y Ed Simons License No RG A422 EHARMW12ldst) <br /> a <br /> Q apo � Description <br /> cuU a0 <br /> a`� 0 a e m o d `�J L) (Color, Texture Structure) <br /> U �mn in Trace < 10%. Little 10% to 20%, Some 20% to 35%, And 35% to 50% <br /> K � <br /> —2 <br /> D <br /> ASD 12 inches of asphalt <br /> 2 < < Dark gray CLAY 80% clay, 20% silt trace very fine sand <br /> CH (slightly moist high plasticity no hydrocarbon odor) <br /> • < c <br /> 4 �I < < ism Yellow brown silty SAND 60% fine sand, 40% silt (slightly <br /> MW_ moist moist to dry, very dense, friable, no hydrocarbon odor) <br /> < < 12-5 <br /> 0 7 <br /> 6 < iF Yellow orange SILT 70% silt, 20% clay 10% fine sand (slightly <br /> 1e moist low Plasticity no hydrocarbon odor) <br /> M1�' <br /> < < I <br /> 8 < �c < - _ -r <br /> < < I 12-10 ML <br /> }� 0 i. Light brawn sandy SILT 25% fine sand 5% medium sand 207. clay <br /> < < I I z7 50% silt (Criss-crossed with caliche veins, dry brittle, <br /> no hydrocarbon odor) <br /> 12 < < <br /> < < <br /> 14 < < �M - <br /> < ,2-15 <br /> 0 _ 5 Red brown silty SAND 70% fine sand 30% silt trace mica <br /> 1� < c I io (s11Qhtly moist friable no hydrocarbon odor) <br /> c c <br /> I <br /> c c � <br /> IMiv- <br /> 20 < < i �12-20 ISP <br /> 0 I 7 (3rades orad brown moist) <br /> • ` < g <br /> i <br /> 22 - <br /> 2-4 <br /> 2 24 <br />