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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 />NUMBER:WELL i
<br />Page I of 2
<br />Project: LFG Monitoring Well Installation Remarks:
<br />Client: San Joaquin County Moved intermediate plug down 1 ft due to sand layer.
<br />Location: Foothill Sanitary Landfill
<br />6484 North Waverly Road, Linden, CA
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<br />o U a Material Description Well Diagram
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<br />SM SILTY SAND WITH GRAVEL (SM) dry, strong brown (7.5YR
<br />4/6), low plasticity, 60 % fine- to coarse-grained sand, 20 %
<br />5 silt, 20 % gravel (subrounded, up to 1-1/5 in.) 5
<br />10 - dark brown (10YR 3/3), no gravel, approximately 20 % fines, 10
<br />CL X80 %fine-grained sand__________________ _ J-
<br />15 SANDY CLAY (CL) dark yellowish brown (10YR 4/4), moist, 15
<br />medium plasticity, approximately 70 % fines, 30 % fine-grained
<br />sand
<br />20 _sam_e, e_xce_pt 50 % fines, 5_0_%_s_an_d_ _ _ _ _ _ _ 20
<br />SC CLAYEY SAND (SC) dark yellowish brown (10YR 4/4),
<br />25 moist, medium plasticity, 20 - 40 % fines, 60 - 80 % 25
<br />fine-grained sand
<br />30 --- ::.----------------------------------- 30
<br />SM SILTY SAND (SM) dark brown (10Yr 3/3), moist, low
<br />plasticity, approximately 20 % fines, 80 % fine- to
<br />35 medium -grained sand, some weakly cemented sand 35
<br />40 — — — — 40
<br />SW -SM WELL GRADED SAND WITH SILT (SW-SM)dark brown
<br />(10YR 3/3), moist, approximately 90 % fine- to coarse-grained
<br />45 sand, 10 % low plastic fines, some weakly cemented sand
<br />layers
<br />50 SC CLAYEY SAND (SC) brown (7.5YR 4/4), moist medium 50
<br />plasticity, approximately 30 % fines, 70 % sand
<br />55 55
<br />60 SM SILTY SAND (SM) moist, approximately 20 % low plastic so
<br />..........
<br />fines, 80 % fine - to medium -grained sand
<br />----- 65
<br />Sc CLAYEY SAND (SC) dark yellowish brown (10YR 4/3),
<br />moist, medium plasticity, approximately 40 % fines, 60 %
<br />70 fine-grained sand, easy drilling 70
<br />75
<br />------ 75
<br />SP -SM POORLY GRADED SAND WITH SILT (SP-SM)moist,
<br />80 --- _approximately 10 % fines, 90 % fene_to medium grained sand — 80
<br />SP POORLY GRADED SAND (SP) very dark grayish brown
<br />(10YR 3/2), mostly medium -grained sand, < 5 % fines, some
<br />RS cemented sand (weak to moderate), < 5 % gravel Ar
<br />Bentonite
<br />Gravel
<br />filter pack
<br />Bentonite
<br />Gravel
<br />filter pack
<br />Bentonite
<br />Gravel
<br />filter pack
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<br />Drilling Company: Technicon Time Started: 7:15am
<br />Time Completed: 12:OOpm
<br />Total Depth (ft): 92
<br />Date Started: 8/4/2009
<br />Drilling Method: Hollow Stem Auger
<br />Date Completed: 8/4/2009
<br />Boring Diameter: 8 in
<br />Elevation (ft): 252.087
<br />Logged By: Kristin Sample, PE
<br />Groundwater Level: NFWE
<br />Sampling Method: Grab from cuttings
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