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Vector Engineering, Inc. 143E Spring Hill Drive Grass Valley, CA 95945 Telephone: 530-272-2448 Fax: 530-272-8533 WELLNUMBER: Page 1 of 1 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: North County Sanitary Landfill 17720 East Harney Lane, Lodi, CA _ rn J a Material Description Well Diagram D 0 SM SILTY SAND (SM) yellowish brown (10YR 5/4), moist, Cement _app_ro_xim_ately _60_% sand, 40 % fines _ _ _ _ _ _ _ _ _ _ _ _ — 5 SC CLAYEY SAND (SC) hardpan, dark yellowish brown (10YR 5 Bentonite 4/6), cemented, hard, approximately 60 % sand, 40 % fines 10 CL SANDY CLAY (CL) dark yellowish brown (10YR 3/4), very Gravel 10 filter pack stiff, softer drilling, medium to high plasticity, approximately 25 % sand, 75 % clay Bentonite 15 SC CLAYEY SAND (SC) verydark grayish brown (10YR 3/2), 15 moist, approximately 60 % sand, 40 % clay 20 20 - harder drilling 25 25 ':. —01 Gravel 30 30 :: filter pack 35 CL SANDY CLAY (CL) dark yellowish brown (10YR 3/4) hard 35 medium to high plasticity, approximately 40 % sand, 60 % fines 40 40 Bentonite --- Sc ----------------------------------- CLAYEY SAND (SC) dark yellowish brown (10YR 3/4), 45 drilling softened up, moist, approximately 60 % sand, 40 % 45--•'• fines 0 50-- 50 55 z 55 .' 60--60 Gravel filter pack 65-- 5 70 70 CL SANDY CLAY (CL) dark yellowish brown (10YR 3/4) moist, �o medium to high plasticity, approximately 30 % sand, 70 % fines Drilling Company: PC Exploration Date Started: 7/28/2009 Time Started: 8:00am Drilling Method: Hollow Stem Auger Date Completed: 7/29/2009 Time Completed: 11:20am Boring Diameter: 8 inch Elevation (ft): 108.862 Total Depth (ft): 75 Logged By: Pete Holland, CEG Groundwater Level: NFWE Sampling Method: Grab from cuttings 7 J