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C C Vector Engineering, Inc. 143E Spring Hill Drive Grass Valley, CA 95945 Telephone: 530-272-2448 Fax: 530-272-8533 NUMBER:WELL SG -124 Page 1 of 1 Project: LFG Monitoring Well Installation Remarks: f 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. U) m J _ Material Description Well Diagram o Q M /Ln V GM o SILTY GRAVEL WITH SAND (GW) Cement 0 0 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 --------------- (—�--------------- 15 _G_W_ CL _GR_A_V_E_LA_ND__CO_B_B_LES__G_W______________ SANDY CLAY WITH GRAVEL (CL) brown (7.5YR 3/2) — 2p moist, approximately 30 % sand, 70 % clay, medium plasticity 20 .. 25 SM ----------------------------------- SILTY SAND WITH GRAVEL (SM) brown (7.5YR 3/2), 25 moist, dense, approximately 50 % sand, 30 % fines, 20 % 30 gravel, low plasticity much of the gravel is pieces of siltstone from lithified siltstone Gravel lenses filter pack 35 35 40 ao 45 CL SANDY CLAY (CL) brown, moist, stiff, medium plasticity 45 50 50 Bentonite 55 55 60 ML SANDY SILT (ML) dark grayish brown (10YR 4/2), moist, nonplastic, approximately 40 % sand, 60 % fines, trace gravel 65 65 70 SM 7. F F. 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