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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: - <br />105 <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 />J <br />CL <br />c <br />Material Description <br />Well Diagram <br />Q <br />0 <br />a <br />m <br />0 <br />ML <br />SANDY SILT (ML) reddish yellow (5YR 6/6), moist, loose, <br />Cement <br />low plasticity <br />5 <br />-5ft: same, except brown (7.5YR 5/3) <br />5 Bentonite <br />-7ft: layer of medium/coarse gravel <br />Gravel <br />10 <br />10 filter pack <br />GM° <br />—� <br />SILTY GRAVEL WITH SAND (GM) nonplastic <br />I•--------------------------------� <br />Bentonite <br />15 <br />CL <br />SANDY CLAY WITH GRAVEL (CL) medium plasticity — <br />15 <br />GM <br />° a °° <br />SILTY GRAVEL WITH SAND (GM) brown, nonplastic, moist, <br />6 <br />loose <br />20 <br />0 <br />20 •' <br />25 <br />CL <br />SANDY CLAY (CL) brown, moist, medium to high plascticity, <br />25--: <br />minor gravel (<5%) <br />30 <br />30 : <br />35 <br />35 Gravel <br />filter pack <br />40 <br />40--:' <br />45-- <br />5 <br />50 <br />50-- <br />50 : <br />55 <br />55 <br />Bentonite <br />60 <br />60 <br />65 <br />65-- <br />70-- <br />70 <br />75 <br />- same to bottom, except dark yellowish brown (10YR 3/4), 60 - <br />75-- <br />- <br />80 % medium plasticity fines, 20 - 40 % fine-grained sand, stiff <br />80 <br />80 •; : Gravel <br />RS <br />filter pack <br />Drilling Company: PC Exploration <br />Date Started: 8/6/2009 Time Started: 9:30am <br />Drilling Method: Hollow Stem Auger <br />Date Completed: 8/10/2009 Time Completed: 11:35pm <br />Boring Diameter: 8 inch <br />Elevation (ft): 260.59 Total Depth (ft): 101 <br />Logged By: Rich Peevers <br />Groundwater Level: NFWE <br />Sampling Method: Grab from cuttings <br />