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Vector Engineering,Inc. <br /> 143E Spring Hill Drive WELLSG-106 <br /> Grass Valley, CA 95945 Pagel 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 /> 0 <br /> QMaterial Description Well Diagram <br /> CL CD0 <br /> ML SANDY SILT(MLA strong brown (7.5YR 4/6), dry, Cement <br /> approximately 70 % low plastic fines, 30%fine-to Bentonite <br /> 5 medium-grained sand, pieces of moderately cemented sand 5 <br /> -5ft: 50 %fines, 25 % sand, 25% gravel (subrounded, up to 3 <br /> in.), some cobbles, pieces of cemented sand Gravel <br /> 10 ---------------------------------- 1� .' : filter pack <br /> GM �-I° SILTY GRAVEL AND COBBLES (GM) - <br /> -� `--------------------------------- Bentonite <br /> ML SANDY SILT WITH GRAVEL(ML)brown (10YR 4/3), moist, <br /> 150 approximately 50 % low plastic fines, 40%fine-to 15 <br /> GP_ ¢ ° \\coarse-grained sand, 10% gravel (subrounded, up to 2 in.) /— <br /> \ --------------------------------J/ <br /> 20 SM \POORLY GRADED GRAVEL(GP)AND COBBLES —_—__/ 20 :. <br /> GM ° SILTY SAND WITH GRAVE L(S M).brown (10YR 4/3), moist, <br /> ° °0 \ approximately 30 % low plasticity fines, 40 % fine-to <br /> 25 0 \coarse-_graine_d_san_d, 30% gravel (subrounded, up to 3 in.) 25 <br /> SILTY GRAVEL WITH SAND(GM)brown (10YR 4/3), moist, <br /> _ approximately 40%gravel (subrounded, up to 2.5 in.), 35% 30 <br /> SC \ fine-to coarse-grained sand, 25% low plastic fines, some <br /> \cobbles / <br /> 35 CLAYEY SAND(SC) dark yellowish brown(10YR 3/4), 35T. <br /> moist, approximately 30% medium plasticity fines, 60 %fine- <br /> 40 to coarse-grained sand (mostly fine), 10% gravel (subrounded, , Gravel <br /> CL yup to 1 _ _________ _______________ _- 40filter pack <br /> SANDY CLAY (CL) dark yellowish brown (10YR 3/4), moist, <br /> 45 approximately 50% medium plasticity fines, 50%fine-grained 45 <br /> sand <br /> j/ -48ft: same, except more fines, approximately 60%fines, 40% <br /> 50 sand 50 <br /> -52ft: same, except more fines, approximately 70%fines, 30% <br /> 55 sand 55-- <br /> 60 -- 60 <br /> 65 65 Bentonite <br /> 70 7o <br /> 75 -- <br /> 80-- <br /> - <br /> 5 80 so <br /> -81 ft: same, except dark brown(10YR 3/3) <br /> Drilling Compan • PC Exploration Date Started: 8/11/2009 Time Started: 3:00pm <br /> Drilling Method: Hollow Stem Auger Date Completed: 8/13/2009 Time Completed: 1:50pm <br /> Boring Diameter: 8 inch Elevation (ft): 280.924 Total Depth (ft): 120 <br /> Logged By: Kristin Sample, PE Groundwater Level: NFWE <br /> Sampling Method: Grab from cuttings <br />