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n Vector Engineering, Inc. 143E Spring Hill Drive Grass Valley, CA 95945 Telephone: 530-272-2448 Fax: 530-272-8533 WELL NUMBER: Page I of I Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: North County Sanitary Landfill 17720 East Harney Lane, Lodi, CA _ W J CL a Material Description Well Diagram c� C7 SM SILTY SAND (SM) yellowish brown (10YR 5/4), dry, Cement _ _ _ nonplastic, approximately 40 % fines, 60 % fine- to 5 CL medium -grained sand, <5 % gravel, hardpan at approximately 5 Bentonite \�2ft ------------------------------i SANDY LEAN CLAY (CL) brown (10YR 4/3), moist, medium Gravel 10SC— plasticity, approximately 50 % fines, 50 % fine- to �� 10 filter pack medium -grained sand, drilling 5 - 10ft 15 _ea_sier CLAYEY SAND (SC) strong brown (7.5YR 4/6), moist, Bentonite low/medium plasticity, approximately 20 % fines, 80 % fine- to 15 medium -grained sand, harder drilling at 10 - 15ft 20 - increase in fines, approximately 40 % fines, 60 % fine sand 20 - color changes to brown (10YR 4/3) 25 25 :: T. Gravel 30 30J. filter pack 35 35.. CL ______ ______________________ ___ SANDY CLAY (CL) dark yellowish brown (10YR 4/4) moist, medium plasticity, approximately 50 % fines, 50 % fine-grained 40 sand 40 - brown (10YR 4/3), approximately 60 % fines, 40 % Bentonite 45 fine-grained sand 45 50 50 - approximately 70 % fines, 30 % fine-grained sand 55 55 :. - dark yellowish brown (10YR 4/4), approximately 70-80 % 60 fines, 20-30 % fine-grained sand so Gravel 65 65 :: filter pack 0 70-- 75 75-- RO 75 An Drilling Company: PC Exploration Date Started: 7/28/2009 Time Started: 12:50pm Drilling Method: Hollow Stem Auger Date Completed: 7/29/2009 Time Completed: 11:20am Boring Diameter: 8 inch Elevation (ft): 113.833 Total Depth (ft): 80 Logged By: Kristin Sample, PE Groundwater Level: NFWE Sampling Method: Grab from cuttings