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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: SG -124 Page I of I Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Hole overdrilled to 88 ft. Location: Foothill Sanitary Landfill Placed 1 ft of gravel at bottom. 6484 North Waverly Road, Linden, CA Deep probe placed at 87 ft, as designed. S U) rn J aMaterial Description Well Diagram c� GM o SILTY GRAVEL WITH SAND (GW) Cement o , 5 SM SILTY SAND WITH GRAVEL (SM) dark brown (7.5YR 3/2), 5 Bentonite moist, sand is fine and composed of siltstone, gravel is 10 volcanic derived 10 Gravel filter pack Bentonite 15 _G_W_ —• ---------------------------------- GR_A_V_E_LA_NDCO_B_B_LES_()_, 15 CL SANDY CLAY WITH GRAVEL (L) brown (7.5YR 3/2) 20 moist, approximately 30 % sand, 70 % clay, medium plasticity 20 :. 25SM SILTY SAND WITH GRAVEL (SM) brown (7.5YR 3/2), 25 moist, dense, approximately 50 % sand, 30 % fines, 20 % 30 gravel, low plasticity 30 :• much of the gravel is pieces of siltstone from lithified siltstone Gravel lenses filter pack 35- 5 35 40 40-- 40 45- 45CL SANDY CLAY (CL), brown, moist, stiff, medium plasticity 45 :• 50 50 Bentonite 55 55 ML SANDY SILT (ML) dark grayish brown (10YR 4/2), moist, nonplastic, approximately 40 % sand, 60 % fines, trace gravel 65 65 70 SM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SILTY SAND (SM) brown (7.5YR 4/3), moist, dense, 70 Gravel approximately 60 % fine-grained sand, 40 % fines filter pack 75-- 75 80 80 85 85 Drilling Company: Technicon Date Started: 7/30/2009 Time Started: 7:45am Drilling Method: Hollow Stem Auger Date Completed: 7/30/2009 Time Completed: 3:30pm Boring Diameter: 8 in Elevation (ft): 247.145 Total Depth (ft): 88 Logged By: Pete Holland, CEG Groundwater Level: NFWE Sampling Method: Grab from cuttings