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F7 GROUNDTATER <br /> TECHNOLOGY,' INC. <br /> Monitoring Well �1�1 Drilling Log <br /> Project TPxan.A ha rt or tdav_ Owner__e_%aco Refinin - Sketch Map <br /> Locatlon_Std2dc'Qnl ca. Project Number 907/150-415D_ <br /> Date Drilled- 4/30/90 Total Depth of Hole 49.5 ftDiameter_10.5 in. SEE SITE PLAN <br /> Surface Elevation Water Level Initlal_ 45.5 ft 24-hour <br /> Screen: Dia. a in_ -Length- 90 ft-- Slot Size •020 in. <br /> Casing: Dia. 4 in. Length 29.5 ft. -Type PVC <br /> Drilling Company Sierra Pacific Drilling Method Hollow stem Aucxer <br /> Driller C. DeSQcio Log by_ M. OS . ndnrr Notes: X-no sample <br /> Geologist / Englneer E.K. Simonis License No. R-G, 1-144?? recovered <br /> g Descrlption/Soil Classification <br /> (Color, Texture, Structures <br /> 0 4 inches asphalt <br /> I I Brown, clayey, silty sand (moist, no product odor) <br /> 2 II <br /> 4I SMI <br /> o` A <br /> so I I <br /> 6 0 `o I I I <br /> " I I <br /> II <br /> 8 Tan clay (stiff, moist, no product odor) <br /> 10El <br /> :'o O o 7 C L <br /> 13 <br /> 12 <br /> Tan, fine, sandy silt (very stiff, moist, no product <br /> 14 0: <br /> C odor) <br /> 16— <br /> ° '4 <br /> 17 <br /> o: <br /> 18 <br /> ML <br /> 20 :` D <br /> o: 10 <br /> O O 15 (grades clavey silt) <br /> 22 <br /> o <br /> 24 <br /> a/es KY. c <br /> Page_.1_of 2 <br />