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Vector Engineering, Inc. 143E Spring Hill Drive WELL ®11 Grass Valley, CA 95945 Page 1 of 1 Telephone: 530-272-2448 Fax: 530-272-8533 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: Foothill Sanitary Landfill 30 6484 North Waverly Road, Linden, CA U rn o J 35 ?a 35 Material Description Well Diagram o SANDY CLAY (CL) dark yellowish brown (10YR 4/4) moist, M medium plasticity, approximately 50 % fines, 50 % fine-grained c� 40 SM 40 SILTY SAND (SM) dark brown (10YR 3/3), moist, nonplastic, Cement ..:..::.:: approximately 30 % fines, 70 % fine-grained sand 5 --- :•.::: ; : ----------------------------------- 5 Bentonite Sc 55 CLAYEY SAND (SC) dark yellowish brown (10YR 3/4), sand moist, low plasticity, approximately 20 % fines, 80 % Gravel 10 so fine-grained sand, < 5 % gravel •. 10 filter pack 15 - same, except brown (10YR 4/3), 70 % fines, 30 % sand 14ft: same, except dark brown (10YR 3/3) Bentonite 15 20 25 Drilling - more fines, approximately 30 % fines, 70 % sand, medium 30 plasticity 30 -more fines, approximately 40 % fines, 60 % sand 35 ______ __________ ____________ _ — — 35 CL SANDY CLAY (CL) dark yellowish brown (10YR 4/4) moist, medium plasticity, approximately 50 % fines, 50 % fine-grained 40 sand 40 45 45 50- 0 55 55 - same, except approximately 60 % fines, 40 % fine-grained 55 sand 60 so - same, except brown (10YR 4/3), 70 % fines, 30 % sand 65-- 65-- 5=70- 70-70-- 0=75 75= 75= 80 = 80-- 0= Drilling Company: PC Exploration Drilling Method: Hollow Stem Auger Boring Diameter: 8 in Logged By: Kristin Sample, PE Sampling Method: Grab from cuttings I Gravel filter pack Bentonite Gravel filter pack Date Started: 7/30/2009 Time Started: 8:05am Date Completed: 7/30/2009 Time Completed: 1:55pm Elevation (ft): 223.428 Total Depth (ft): 63 Groundwater Level: NFWE C7