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Vector Engineering, Inc. <br />143E Spring Hill Drive <br />Grass Valley, CA 95945 <br />Telephone: 530-272-2448 <br />Fax: 530-272-8533 <br />WELLSG-109 <br />Page 1 of 2 <br />Project: LFG Monitoring Well Installation <br />Remarks: <br />Client: San Joaquin County <br />Hole overdrilled to 170 ft. <br />Location: Foothill Sanitary Landfill <br />Placed 4 ft of gravel at bottom. <br />6484 North Waverly Road, Linden, CA <br />Deep probe placed at 166 ft, as designed. <br />rn <br />J <br />c <br />Material Description <br />Well Diagram <br />CL <br />® <br />� <br />Q <br />C? <br />GW <br />WELL GRADED GRAVEL AND COBBLES WITH SAND <br />Cement <br />a <br />(GW) <br />5 <br />®► <br />5 <br />Bentonite <br />• <br />e �• <br />Gravel <br />10 <br />®® ® <br />10 <br />filter pack <br />eike e9 <br />Bentonite <br />15--®® <br />® <br />15 <br />e e s • <br />20--®® <br />® <br />0 . <br />2T. <br />e e e e <br />• <br />___ <br />X X X X <br />SILTSTONE, brown, weakly cemented, laminated, trace <br />25 ' <br />X X X X <br />X x x x <br />lenses of sand <br />30 <br />X x x x <br />XXXX30 <br />X X X X <br />X X X X <br />X x x x <br />X x x x <br />35 <br />X X X X <br />XX X X <br />35 <br />X X X X <br />X X X X <br />40--xxxx <br />X X X X <br />xxxx <br />40 <br />X x x x <br />X x x x <br />X x x x <br />45 <br />X x x x <br />XXxx <br />45 <br />XX X X <br />X X X X <br />Gravel <br />X X X Xfilter <br />pack <br />50 <br />xXx—X <br />--- <br />SP <br />7— <br />----------------------------------- <br />POORLY GRADED SAND (SP) black sand, weakly <br />cemented <br />55-- <br />55— � • <br />60 <br />60 <br />XX XX <br />X X X X <br />— — — — — — — — — — <br />SILTSTONE, brown, moderately cemented <br />65 <br />XXXX <br />X X X X <br />X X X X <br />65 <br />70 <br />X X X X <br />X X X X <br />XXXX <br />X X X X <br />70 <br />X X X X <br />X X X X <br />X X X X <br />75 <br />X X X X <br />xxxx <br />X x x x <br />75-- <br />X x x x <br />X x x x <br />80 <br />X 80 <br />X X X <br />Bentonite <br />X X X X <br />-XXXXXx x <br />85 <br />x x x x <br />1 x x x x <br />Drilling Company: Westex <br />Date Started: 8/12/2009 Time Started: 1:OOpm <br />Drilling Method: Air Rotary <br />Date Completed: 8/13/2009 Time Completed: 1:OOpm <br />Boring Diameter: 8-5/8 in <br />Elevation (ft): 326.281 Total Depth (ft): 170 <br />Logged By: Pete Holland, CEG <br />Groundwater Level: NFWE <br />Sampling Method: Grab from cuttings <br />-1 <br />