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0"I1 GROUNDWATER <br /> '1 00 TECHNOLOGY, INC. <br /> Monitoring Well Drilling Log <br /> Project- TEXPCO/rhartor ]jai, Owner 7_exaco Refinira S Marie_ tina Sketch Mop <br /> Location__a2di on,. ca. Project Number. ?07/'50-4150 <br /> Date Drilled 4/30/90 Total Depth of Hole 49.5 ftDlcmeter- 10.5 in. SEE SITE PLAN <br /> Surface Elevoilon Water Level Initlal_ 45.5 ft 24-hour <br /> Screen: Dlo. 4 in Length- 90 ft. Slot Size •020 in. <br /> Casing: Dla. 4 in• Length 29.5 ft. —Type. PVC <br /> Drilling ComponY Sierra Pacific Drilling Method Hollow stem Auaer <br /> Driller C. DeSQcio Log by.. M. Oa . ndorf Notes; X-no sample <br /> Geologist / Engineer E.K. Simonis License No.- R.G. f"4499 recovered <br /> g 3 Descrlptlon/Solt Classification <br /> (Color, Texture, Structures) <br /> 0 4 inches asphalt <br /> 0 <br /> I I Brown, clayey, silty sand (moist, no product odor) <br /> 2 II <br /> 4 <br /> A <br /> II <br /> I SM <br /> o.` <br /> so I I <br /> 6 o D I I I <br /> III <br /> II <br /> II <br /> 8 Tan clay (stiff, moist, no product odor) <br /> B <br /> 0 <br /> 0 <br /> 10 4 <br /> o 7 CL <br /> 0 „ <br /> 12 <br /> Tan, fine, sandy silt (very stiff, moist, no product <br /> 14 0.. " <br /> C odor) <br /> - 16- ° 1.4 . <br /> 17 <br /> Ml <br /> 20 0 D 10 <br /> O o 15 (grades clavey silt) <br /> 22 <br /> o <br /> •: o <br /> 24 <br /> o: <br /> a/ REX a <br /> Page_1 of-L <br />