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Vector Engineering, Inc. <br /> 143E Spring Hill Drive WELL -111 <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 /> U) J <br /> 1 U s Material Description Well Diagram <br /> Q. <br /> C.7 <br /> SP-SC POORLY GRADED SAND WITH CLAY&GRAVEL(SP-SG) Cement <br /> dry, brown (7.5YR 4/3), approximately 10 % low/medium <br /> 5 ML— plasticity fines, 75 % fine-to medium-grained sand, 15 % 5 Bentonite <br /> gravel (subrounded, up to 2 in.) i <br /> -------------------------------- Gravel <br /> 10 ___ SANDY SILT(ML) dark brown (10YR 3/3), moist, �o <br /> SC approximately 50 % low_plasticity_fines, 5_0_%_fine-grained sand/— filter Pack <br /> CLAYEY SAND(SC) dark yellowish brown (10YR 4/4), Bentonite <br /> 15 moist, approximately 40 % medium plasticity fines, 60% 15 <br /> fine-grained sand <br /> 20 -some weakly and moderately cemented sand 20 <br /> -23ft: same, except 15% medium plasticity fines, 85% fine-to <br /> 25 medium-grained sand 25 <br /> 30 -- -29ft: same, except approximately 30% medium plasticity — — 30 <br /> _fines, 70 % fine-grained sand _ __ _ <br /> SC-SM CLAYEY/SILTY SAND (SC-SM)dark yellowish brown (10YR <br /> 35 -- <br /> 4/4), moist, 20 % low/medium plasticity fines, 80 %fine-grained 35 <br /> sand <br /> 40 _ _ _ _ —_ ————— 40 : Gravel <br /> SM SILTY SAND (SM) dark yellowish brown (10Yr 4/3), filterack <br /> approximately 20% low plasticity fines, 80 % fine-to P <br /> 45 _ medium-grained sand _ 45 <br /> SC \CLAYEY SAND (SC) dark yellowish brown (10YR 4/4) J <br /> 50 moist, 30-40% medium plasticity fines, 60 -70 %fine-grained 50 <br /> sand <br /> 55 -- <br /> 60 -- <br /> 5 60 60-- <br /> 65 -- 65 <br /> Bentonite <br /> 70 70 <br /> 75 75 <br /> 80 —_ so <br /> CL SANDY CLAY(CL) moist, brown (10YR 4/3), approximately <br /> 50% medium plasticity fines, 50 % fine-grained sand <br /> Drilling Company: PC Exploration Date Started: 8/13/2009 Time Started:2:50pm <br /> Drilling Method: Hollow Stem Auger Date Completed: 8/17/2009 Time Completed: 12:00pm <br /> Boring Diameter: 8 in Elevation (ft): 287.902 Total Depth (ft): 128 <br /> Logged By: Kristin Sample, PE Groundwater Level: NFWE <br /> Sampling Method: Grab from cuttings <br />