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SECOR <br /> Intemational Incoryorated <br /> Logged By: Date Drilled: Drilling Contractor Project Narne: MedKxWquipmatt: Well Number: <br /> '- Hollow Stem Auger <br /> B.Miller 3/31/04 Cascade Drilling 139 S.Center St.,Stocidon,Ca CNM75 NW-17 <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft): Total Drive Drop <br /> saznPtinB Diam(I): Elev.(R): <br /> cufica'ons ratory <br /> V 25 First Encountered Depth( ) Hn(tbs•): )= <br /> Lusand labo <br /> testinst methods 8 30.0 140 30 <br /> O y <br /> Well Details a a Description 3, <br /> t] > a s <br /> Q.. <br /> a a <br /> 12-inch A Soil Surface <br /> traffic rated <br /> well box. <br /> Location was vacuum cleared to 8'2"bgs on 3/29x2004. <br /> Abundant broken up concrete and asphalt were removed during clearance <br /> activities. <br /> 5- <br /> 2"Sch.40 SILTY SAND WITH GRAVEL(SMG):Yellowish brown(10YR 5/4); <br /> PVC Set In 15-25%low plasticity fines;65-750%well graded,fine to coarse-grained sand; <br /> Portland gravels to 0.75"in diameter,damp;very dense;no hydrocarbon odor. <br /> • Cement 10- <br /> 4.5 0.6 <br /> SILTY SAND(SAn:Yellowish brown(IOYR 5/4);25-35%non-plastic fines; <br /> fine to medium-grained sand;damp;very dense;no hydrocarbon odor. <br /> 15 <br /> 4/5 1.1 <br /> Hydrated <br /> Bentonite <br /> Chips <br /> =:#2116 Sand <br /> 20 <br /> 5/5 0.6 <br /> 0.01"Slotted CLAYEY SAND(SC):Brown(1 OYR 4/3);35-45%medium plasticity fines; <br /> 2"Sch.40 55-65%fine-grained sand;trace iron-oxide staining;trace black staining,damp; <br /> PVC Screen very dense;no hydrocarbon odor. <br /> The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or <br /> samples obtained during drilling. Predominant material types shown on the log may contain different materials and the change from <br /> one predominant material type to another could be different than indicated Descriptions on this log apply only at the specific location <br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times. <br /> Project No. 77CH.90557.04 Date Alareh/April 2004 Log of Well <br /> CH90557.GP1 Approved by <br /> LOG OF BOREHOLE <br /> Figure 17 (sheet 1 of 2) <br />