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Vector Engineering, Inc. 143E Spring Hill Drive Grass Valley, CA 95945 Telephone: 530-272-2448 Fax: 530-272-8533 WELL NUMBER: - 125 Page 1 of 1 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA J jQ Material Description Well Diagram o cc c� Bentonite Gravel filter pack Bentonite Gravel filter pack Bentonite Gravel filter pack Drilling Company: PC Exploration/Technicon Date Started: 8/3/2009 Time Started: 9:00am Drilling Method: Hollow Stem Auger Date Completed: 8/5/2009 Time Completed: 12:00pm Boring Diameter: 8 in Elevation (ft): 244.545 Total Depth (ft): 85 Logged By: Kristin Sample, PE Groundwater Level: NFWE Sampling Method: Grab from cuttings U SILT (M), dark brown (10YR 4/3), dry, approximately 90 % _ML— GP -GM low plastic fines, 10 % fine-grained sand i' `----------- 5 M�� _ _ _ _ — � WELL GRADED GRAVEL WITH SILT (GP-GM)90 % gravel 5 Sm— SM (subrounded, up to 10 % low plastic fines, dry I ------- -- ---� i 10 _: I SANDY SILT WITH GRAVEL (ML) brown (10YR 4/3), dry, I 10 I approximately 50 % low plastic fines, 30 % fine-grained sand, I 20 % gravel (subrounded, up to 1 in.), layer of weakly 15 :.:. ;.. cemented sand ---J ----------------------------- 15 SILTY SAND WITH GRAVEL (SM) dark yellowish brown 20--(10YR 3/4), moist, approximately 20 % low plastic fines, 40 % fine- to coarse-grained sand, 40 % gravel (subrounded, up to 3 20 in.), some cobble 25 - 18ft: dark brown (10Yr 3/3), 15 % fines, 85 % sand, some 25 weakly cemented sand 30 - weakly cemented sandstone layers from 22 - 33 ft 30 35 CL SANDY CLAY (CL) brown (10YR 4/3), moist, medium 35 plasticity, approximately 50 % fines, 50 % fine-grained sand 40 ao : SM SILTY SAND (SM) dark brown (10YR 3/3), approximately 20 45 % low plastic fines, 80 % fine- to medium -grained sand, weakly 45 cemented sand 50 SP -SM ::;.:.:.. POORLY GRADED SAND WITH SILT (SP-SM)dark 50 brown(10YR 3/3), approximately 10 % low plastic fines, 90 % fine- to medium -grained sand, some cemented sand layers 55 55 - 60 -with 5-10 % gravel (subangular, up to 1 in.) 60—.. 65-- 65 SC CLAYEY SAND (SC) dark yellowish brown (10YR 3/4) 70 moist, approximately 15 % fines, 85 % fine-grained sand, < 5 70 % gravel (subrounded, up to 1 in.) 75 75 80 -15-3 0 % medium plasticity fines, 70 - 85 % fine-grained 80 :: �^ sand Bentonite Gravel filter pack Bentonite Gravel filter pack Bentonite Gravel filter pack Drilling Company: PC Exploration/Technicon Date Started: 8/3/2009 Time Started: 9:00am Drilling Method: Hollow Stem Auger Date Completed: 8/5/2009 Time Completed: 12:00pm Boring Diameter: 8 in Elevation (ft): 244.545 Total Depth (ft): 85 Logged By: Kristin Sample, PE Groundwater Level: NFWE Sampling Method: Grab from cuttings U