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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 />WELL NUMBER: SG -108 <br />Page 1 of 2 <br />Project: LFG Monitoring Well Installation <br />Remarks: <br />Client: San Joaquin County <br />Location: Foothill Sanitary Landfill <br />6484 North Waverly Road, Linden, CA <br />M <br />U) <br />QMaterial <br />Description <br />Well Diagram <br />ca <br />W -G <br />WELL GRADED GRAVEL WITH SILT AND SAND (GW -GIVE) <br />Cement <br />a <br />brown, moist, approximately 40 % gravel, 25 % cobbles, 25 <br />5 <br />sand, 10 % fines <br />5 <br />Bentonite <br />• s <br />Gravel <br />10 <br />® <br />® <br />10 <br />filter pack <br />• <br />Bentonite <br />15-- <br />5 <br />20 <br />20 <br />® <br />20 <br />25 <br />_ <br />_ <br />SP <br />.! • . <br />POORLY GRADED SAND (SP) black sand, weakly <br />cemented <br />30 <br />30—: <br />35 <br />::.;y <br />X X X X <br />X x x x <br />XX X X <br />X X X X <br />SILTSTONR brown, weakly lithified, low plasticity <br />35 . <br />40 <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 />X x x x <br />45 <br />xxxx <br />45 <br />X x x x <br />XX X X <br />X X X X <br />Gravel <br />X X X X <br />filter pack <br />50 <br />X X X X <br />X x x <br />50--:- <br />x <br />X x x x <br />?S <br />— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — <br />; <br />55 <br />SP <br />POORLY GRADED SAND (SP) black sand, weakly <br />55--. <br />cemented <br />60 <br />60 <br />--- <br />-- <br />X X X X x x x x <br />---------------------------------- <br />SILTSTONE, brown, moderately cemented <br />65 <br />xxxx <br />X x x x <br />65 <br />X x x x <br />X x x x <br />70 <br />X x x x <br />X X X X <br />70 <br />X X X X <br />X X X X-� <br />---.: <br />SP <br />. <br />— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — <br />POORLY GRADED SAND (SP) black sand <br />75--75--'. <br />:.. - . <br />xX— <br />X X X X <br />— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — <br />SILTSTONE, brown, moderately cemented <br />XX X X <br />80 <br />85 <br />X X X X <br />XX X X <br />X X X X <br />x x x <br />Xx 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 />