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Vector Engineering, Inc. 143E Spring Hill Drive LL ®112 Fa Grass Valley, CA 95945 9 1of 2 Telephone: 530-272-2448 Fax: 530-272-8533 Project: LFG Monitoring Well Installation Remarks: 5 Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA U) J CL ?Q Material Description Well Diagram ML SANDY SILT(ML) brown (10YR 4/3), dry, approximately 50 Cement % low plastic fines, 50 % fine-grained sand, some cemented 5 sand 5_ Bentonite --- ---------------------------------- SC CLAYEY SAND (SC) dark yellowish brown (10YR 4/4), 10 moist, approximately 30% medium plasticity fines, 70 % fine- to filterpack to medium-grained sand 14ft: cemented layer sandstone Bentonite 15 SM- _ __ . �- ------ _ _r— Y —_ __ --- —�� 15 SILTY SAND(SM) dark brown (10YR 3/3), moist, 15-20 % low plastic fines, 80 -85% fine-to medium-grained sand 20 (mostly fine) 20 -some strong to moderately cemented sand layers (sandstone) 25 -- 30------ 5 30 --- 30 SC CLAYEY SAND (SC) brown (10YR 4/3), moist, approximately 30 % medium plasticity fines, 70 %fine-grained 35 sand, some weak to moderately cemented sand layers from 30 35 Gravel -62ft filter pack 40 -37ft: same, except approximately 15 %fines, 85 % ao :' fine-grained sand -43ft: same, except dark brown (10YR 3/3) 45 457. 50 -- 50 -52ft: same, except approximately 40% fines, 60% 55 fine-grained sand 55 -thin layers of claystone/siltstone 53-62ft Bentonite 60 60 CL SANDY CLAY(CL) brown (10YR 4/3), moist, approximately 65 60 -70% medium plasticity fines, 30-40 % fine-grained sand, 65 some weakly cemented sand 70 70 75 75 80 -- 80 Gravel filter pack Drilling Company: Technicon Date Started: 8/5/2009 Time Started: 1:05pm Drilling Method: Hollow Stem Auger Date Completed: 8/6/2009 Time Completed: 12:05pm Boring Diameter: 8 in Elevation (ft): 266.42 Total Depth (ft): 106 Logged By: Kristin Sample, PE Groundwater Level: NFWE Sampling Method: Grab from cuttings