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C7 <br />E <br />Vector Engineering, Inc. <br />143E Spring Hill Drive <br />Grass Valley, CA 95945 <br />Telephone: 530-272-2448 <br />Fax: 530-272-8533 <br />WELL NUMBER: SG -18 <br />Page I of I <br />Project: LFG Monitoring Well Installation <br />Remarks: <br />Client: San Joaquin County <br />Location: North County Sanitary Landfill <br />17720 East Harney Lane, Lodi, CA <br />0) <br />0 <br />_J <br />6- <br />Material Description <br />Well Diagram <br />SM <br />SILTY SAND (SM) brown (7.5YR 4/4), dry, nonplastic, <br />Cement <br />approximately 30 % fines, 70 % fine- to medium -grained sand, <br />5— <br />stiffer at 3 ft <br />Bentonite <br />10-- <br />_low <br />Gravel <br />filter pack <br />- <br />SC <br />moist, i_p51ait1_City, <br />15-- <br />approximately 15 % fines, 85 % fine to medium -grained sand <br />-og Bentonite <br />15 <br />- <br />CL <br />------------------------------------- <br />SANDY CLAY (CL) brown (7.5YR 4/4), moist, medium <br />20 --plasticity, <br />approximately 50 % fines, 50 % fine-grained sand <br />_C_L_A_YE_Y_S_A_N_D_(S_C_) <br />- <br />—dark —yellowish —brown —(l—OY—R— 4—/4—),— <br />25-- <br />moist, low plasticity, approximately 30 % fines, 70 % <br />25 <br />fine-grained sand <br />less fines, approximately 20 % fines, 80% fine- to <br />-4 Gravel <br />30 <br />medium -grained sand <br />30 filter pack <br />35-- <br />35 : <br />same, except brown (11 OYR 4/3) <br />40 <br />40 <br />medium plasticity, approximately 40 % fines, 60 % fine- to <br />45-- <br />medium -grained sand <br />45 Bentonite <br />50 <br />CL <br />SANDY CLAY (CL) brown (_1 0_Y_R_4_/3_), _moist, _medium — — — — — — — <br />50 <br />plasticity, approximately 50 % fines, 50 % fine-grained sand <br />-- <br />55-- <br />same, except dark yellowish brown (11 OYR 4/4) <br />55-- <br />60-- <br />Z <br />60-- <br />65-- <br />- same, except brown (1 OYR 4/3) <br />65 -4 Gravel <br />— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — -- <br />filter pack <br />- <br />70— <br />Sc <br />CLAYEY SAND (SC) brown (10YR 4/3), moist, low plasticity, <br />% <br />approximately 40 fines, 60 % fine- to medium -grained sand <br />70 -- <br />- <br />75-- <br />75-- <br />-- <br />— — — <br />CL <br />-- - - <br />— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — <br />SANDY CLAY (CL) dark yellowish brown (10YR 3/4), moist, <br />80 <br />medium plasticity, approximately 70 % fines, 30 % fine-grained <br />8 <br />sand <br />7- <br />Drilling Company: PC Exploration <br />Date Started: 7/23/2009 Time Started: 7:30am <br />Drilling Method: Hollow Stem Auger <br />Date Completed: 7/24/2009 Time Completed: 9:35arn <br />Boring Diameter: 8 inch <br />Elevation (ft): 117.341 Total Depth (ft): 83 <br />Logged By: Kristin Sample, PE <br />Groundwater Level: NFWE <br />Sampling Method: Grab from cuttings <br />