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Drilling Log <br /> :; GROUNDWATER Monitoring Well MW-7 <br /> TECHNOLOGY <br /> Chevron USA ProauGtS Comp8nv See Site Map <br /> Prosect Chevron - S. Center, 5to„�tc.n D+rner For Boring Location <br /> Location 139 South Center St- Stockta-. CA Pro(. No. 02070 0068 <br /> Surface Elev. Total hole Depth s2 f' Diameter 8 in _ -_ COMMENTS: <br /> Top of Casing Water Level Initial Static 34.7 ft. <br /> Screen: Dia 2 in. Length 20 0. Type/Size Scr.. 40 PVC/0.020 in, <br /> Casing: Dia 2_in, Length 37 0 Type Sch. 40 PtrC <br /> Fill Material )Sand Rig/Core P,no D-14 Limned ACCe5SISDQhf <br /> Drill Co. Grew Brifinc Method Hvdraulicafil, Driven <br /> Driller Butch Log By Brian M_-Moon Dale 1`1/30 E 12/Ot, mit # 8000 <br /> Checked By Ed Simonis License No. R&*4422 <br /> � 0 <br /> r� —a o� o o � t Description <br /> a� v_ —a a U ao , <br /> Q.. 'X E a s 3 u <br /> U i ID N (Calor, Texture, Structure) <br /> E <br /> U X ? I Trace < 10%, Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br /> _2 <br /> I <br /> i <br /> 0 <br /> > r 5" concrete (sidewalk) over base course. <br /> o. <br /> o::o'.: <br /> 2 < < o. Silty CLAY (20,80): dark brown, dry to damp, no hydrocarbon <br /> odor. <br /> < < <br /> i <br /> 4 < ' i <br /> rL { <br /> 6 < < <br /> 0 Mw-7 y E <br /> p < c l <br /> o < c i <br /> < < � I I <br /> w <br /> PP Ciavey silty fine SAND (20,80): brown, grading to silty CLAY <br /> 10 < < l SCI (20.80): dark brown, dry to oamp, no hydrocarnon odor. <br /> 0 �-no ~' <br /> 12 : cL <br /> < < <br /> Clayey SILT (4�_:,55): brown, dry to damp, no hycrocarbon odcr. <br /> 14 I <br /> < < ' <br /> < < LL7K <br /> lfi Ir-; , <br /> 1 c < Silty CLO' (4C',tj_): itont Crown with Gark Town mottling, dry t0 <br /> I <br /> Camp, no hydrocart7on 01"o'.< < <br /> 20 � < <br /> - 227 < < <br /> I� <br /> < < <br /> i <br /> 24 <br /> arresnssa II{hio cc .5_ Pane• o' <br />