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031,28/07 15:n4 5510 842 8370 CHEVRON U.S.A. 2019/024 <br /> Drilling Log <br /> GROUNDWATER Monitoring Well MW-13 <br /> Hpaltl TECHNOLOGY <br /> i Project Chevron - Stock.ton Owner Chevron U.S.Q. Products Co. See Site Map <br /> Location 45 Cast Hardin0 Wav Protect No. 02070 3399__ Dale drilled 06/30/93 For Boring Location <br /> Surface Elev, Total Hole Depth [i5 f1� Diameter /in. ft. COMMENTS; <br /> Top of Casing Water Level Initial Ss ft. Static <br /> Screen: Dia 2/n Length 25 fl. Type/Size 0.020 in. <br /> Casing: Dia 2 in- Length 40 U, Type Sched. 40 PVC <br /> Fitter Pack Material #3 Sand _ Rig/Core Type C4I /So;it soonn <br /> Drilling Company Soria Ex, Se2C25 Method Hollow stem auce( Permit i <br /> Driller Mr%e Duffv Log By Roi Nertato <br /> Checked By Ed Simdnis License No.RG 4422 CHAP+Wl31030 <br /> C O yT N <br /> L�. I " ; Description <br /> n� vv o� voo nm � <br /> o <br /> ° #° a 06 E Y v 0� (Color, Texture, Structure) <br /> � r° tnmX � m Trace < 10%, Little 10% to 20Y, Some 20% to 35%, And 35% to 50% <br /> 2 - <br /> 0 l A:° 10 inches of asphalt over gravelly sand backfill <br /> ° Gw <br /> 2 < < Dark gray fat CLAY; 60% clay. 20% silt, trace fine sand <br /> �I I (slightly moist, very stiff, medium elasticity no hydrocarbon <br /> CM <br /> ` odor) <br /> i < < I <br /> 4 <br /> Mh'- + <br /> 7 <br /> < 0 a Yellow brown silty SAND: 60% fine sand, 40% silt. trace mica <br /> 6 Id (slightly moist to dry, very dense, triable, no hydrocarbon <br /> SMI odor( <br /> 8 i ` <br /> J < <br /> qr Mw�O Yellow brown mottled with white sandy SILT: 50x silt. 30w fine <br /> 10 I ` ` p s sand, 20`p clay, trace medium sand. trace Caliche veins <br /> < t n (slightly moist to dry, low plasticity, brittle, no <br /> 17 hydrocar Don odor) <br /> 12 t < <br /> i <br /> ML <br /> 14 < I Mw_ <br /> 3-15 <br /> °r ` o.l v (Grades Yellow orange clayey SILT: 5595 silt, 30% sclay, 5% fine <br /> 1� ,< sand, trace mica) <br /> 18 <br /> M,}9- <br /> 20 < 13-20 Yellow brown SANO: 959: fine sand, 6" slit. trace MSC8 (Slightly <br /> O" a � . . . most, medium Dense. finable, no hyerocarbon odcrl <br /> � <br /> < < I v <br /> (Graces with Dravel, 60.. fine sand, 20°: medwm sand, 109% coarse <br /> 22 ` `r sand, 10% fine suDargular gravel) <br /> - 24 <br /> Bagel. 1 0f l <br />