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Vector Engineering, Inc. L -123 <br /> 143E Spring Hill Drive <br /> Grass Valley, CA 95945 Page 1 of 1 <br /> Telephone: 530-272-2448 <br /> Fax: 530-272-8533 <br /> Project: LFG Monitoring Well Installation Remarks: <br /> Client: San Joaquin County Hole overdrilled to 68.5 ft. <br /> Location: Foothill Sanitary Landfill Placed 0.5 of gravel at bottom. <br /> 6484 North Waverly Road, Linden, CA Deep probe placed at 68 ft, as designed. <br /> _ rn <br /> J <br /> aMaterial Description Well Diagram <br /> o <br /> C� <br /> ML SANDY SILT(ML) brown moist, approximately 30% Cement <br /> 5 fine-grained sand, 70%fines, easy drilling 5 <br /> Bentonite <br /> 10 SM SILTY SAND (SM) brown moist, dense, approximately 60 % 10 Gravel <br /> sand, 40 %fines filter pack <br /> Bentonite <br /> 15 15 <br /> SP-SM POORLY GRADED SAND WITH SILT(SP-SM)black, <br /> 25 approximately 80%fine-grained sand, 20% fines 25 <br /> Gravel <br /> filter pack <br /> 30 30 <br /> ---------------------------------- <br /> CL SANDY CLAY (CL) brown, moist, low plasticity, <br /> 35 approximately 30%sand, 70%fines 35 <br /> Bentonite <br /> 40 40 <br /> 45 45 <br /> 50 50 <br /> SM SILTY SAND(SM) brown moist, approximately 60% sanf, <br /> 55-- 40 % fines 55 Gravel <br /> ——— filter pack <br /> 60 ML SANDY SILT(MLA brown moist, nonplastic, harder drilling 60 <br /> 65 -- <br /> 70 -- <br /> 5 70 = 70-- <br /> 75 -- <br /> 0=75 = 75-- <br /> 80 <br /> 5_80 = 80= <br /> Drilling Company: Technicon Date Started: 7/30/2009 Time Started. 3: <br /> 40pm <br /> Drilling Method: Hollow Stem Auger Date Completed: 7/31/2009 Time Completed: 12:00pm <br /> Boring Diameter: 8 in Elevation (ft): 228.202 Total Depth (ft):68.5 <br /> Logged By: Pete Holland, CEG Groundwater Level: NFWE <br /> Sampling Method: Grab from cuttings <br />