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Vector Engineering, Inc. <br />143E Spring Hill Drive NUMBER:WELL <br />Grass Valley, CA 95945 Page 1 of 2 <br />Telephone: 530-272-2448 <br />Fax: 530-272-8533 <br />Project: LFG Monitoring Well Installation Remarks: <br />Client: San Joaquin County <br />Location: Foothill Sanitary Landfill <br />6484 North Waverly Road, Linden, CA <br />rn <br />o <br />N J <br />L U U <br />oj Q Material Description Well Diagram <br />C. <br />[7 <br />1� <br />W -G <br />WELL GRADED GRAVEL WITH SILT AND SAND (GW -GM) <br />Cement <br />•® • <br />brown, moist, approximately 40 % gravel, 25 % cobbles, 25 % <br />5 <br />j <br />sand, 10 % fines <br />5 <br />Bentonite <br />• e <br />Gravel <br />10 <br />' <br />• <br />t 0 <br />filter pack <br />e • <br />Bentonite <br />15 <br />j <br />15 <br />20 <br />® <br />20 <br />a e <br />SP <br />POORLY GRADED SAND (SP) black sand, weakly <br />cemented <br />30-- <br />30—.' <br />35 <br />---...—_— <br />X X X X <br />X x x x <br />X x X x <br />X x x x <br />_______________________ _________ <br />—SILTSTONE, brown, weakly lithified low plasticity <br />35 <br />40 <br />X x x x <br />x x x x <br />X X X X <br />X x x x <br />xx x x <br />40 <br />45 <br />X x x x <br />X X X X <br />X x x x <br />45 <br />X x x x <br />X x x X <br />Gravel <br />X X X X <br />filter pack <br />5O <br />X X X X <br />X X X X <br />X x x x <br />5O <br />X x x x <br />--- <br />— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — <br />SP <br />.:.' <br />POORLY GRADED SAND (SP) black sand, weakly <br />--55 <br />55 <br />cemented <br />0 <br />60-- <br />60 <br />---- <br />_-- <br />X X X X <br />X X X X <br />------------------------------ <br />SILTSTON� brown, moderately cemented <br />65 <br />X x x x <br />X x x x <br />X x x x <br />65 <br />70 <br />xx x x <br />X x x x <br />x x x x <br />xxxx <br />X x x x <br />70 <br />SP <br />— — — — — — — — — — <br />POORLY GRADED SAND (SP) black sand <br />•. <br />75 <br />— — — <br />---------------------------------- <br />75 <br />X X XX <br />Xx x x <br />SILTSTONE, brown, moderately cemented <br />X x x x <br />80 <br />X X X X <br />X X X <br />X X X X <br />X X X X <br />XX <br />X X X X <br />Xx <br />80 <br />Bentonite <br />Drilling Company: Westex <br />Date Started: 8/11/2009 Time Started: 11:30am <br />Drilling Method: Air Rotary <br />Date Completed: 8/12/2009 Time Completed: 12:20pm <br />Boring Diameter: 8-5/8 in <br />Elevation (ft): 309.255 Total Depth (ft): 155 <br />Logged By: Pete Holland, CEG <br />Groundwater Level: NFWE <br />Sampling Method: Grab from cuttings <br />C. <br />[7 <br />1� <br />