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Vector Engineering, Inc. 143E Spring Hill Drive WELL •111 Grass Valley, CA 95945 Page 1 of 2 Telephone: 530-272-2448 Fax: 530-272-8533 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA _ rn U J o?Q Material Description Well Diagram 0 65 70 70 - Bentonite M 75 75 80 80]:.. 85 CL SANDY CLAY (CL) moist, brown (10YR 4/3), approximately ro/mi-50 % medium plasticity fines, 50 % fine-grained sand R, Drilling Company: PC Exploration Date Started: 8/13/2009 Time Started: 2:50pm i Drilling Method: Hollow Stem Auger Date Completed: 8/17/2009 Time Completed: 12:00pm Boring Diameter: 8 in Elevation (ft): 287.902 Total Depth (ft): 128 Logged By: Kristin Sample, PE Groundwater Level: NFWE Sampling Method: Grab from cuttings C n SP -SC :. POORLY GRADED SAND WITH CLAY & GRAVEL (SP -SG) Cement dry, brown (7.5YR 4/3), approximately 10 % low/medium 5 _ M� plasticity fines, 75 % fine- to medium -grained sand, 15 % 5 Bentonite gravel (subrounded, up to 2 in.) i -------------------------------- 10 SANDY SILT (MLA dark brown (10YR 3/3), moist, Gravel SC �_approximately _5_0_%low _plasticity 5_0_%_fine-grained ,— �o filter pack _fines, _sand CLAYEY SAND (SC) dark yellowish brown (1OYR 4/4), Bentonite 15 moist, approximately 40 % medium plasticity fines, 60 % 15 fine-grained sand 20 -some weakly and moderately cemented sand zo -23ft: same, except 15 % medium plasticity fines, 85 % fine- to 25 medium -grained sand 25 30 -29ft: same, except approximately 30 % medium plasticity 30 . _ _ _ fines, 70 % fine-grained sand SC -SM .. .::. _ _ _ _ _ _ _ _ CLAYEY/SILTY SAND (SC -SM) dark yellowish brown (10YR 35 4/4), moist, 20 % low/medium plasticity fines, 80 % fine-grained 35 sand 40 SM — — — — — — SILTY SAND (SM) dark yellowish brown (1�OYr 4/3), 40 Gravel approximately 20 /o low plasticity fines, 80 /o fine- to filter pack 45 _ medium -grained sand _ 45 SC _ _ _ _ _ _ _ CLAYEY SAND (SC) dark yellowish brown (10YR 4/4) —J 50 moist, 30 - 40 % medium plasticity fines, 60 - 70 % fine-grained sand 50 55 65 70 70 - Bentonite M 75 75 80 80]:.. 85 CL SANDY CLAY (CL) moist, brown (10YR 4/3), approximately ro/mi-50 % medium plasticity fines, 50 % fine-grained sand R, Drilling Company: PC Exploration Date Started: 8/13/2009 Time Started: 2:50pm i Drilling Method: Hollow Stem Auger Date Completed: 8/17/2009 Time Completed: 12:00pm Boring Diameter: 8 in Elevation (ft): 287.902 Total Depth (ft): 128 Logged By: Kristin Sample, PE Groundwater Level: NFWE Sampling Method: Grab from cuttings C n