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Vector Engineering,Inc. 143E Spring Hill Drive WELLSG-108 Grass Valley, CA 95945 Page 1 of 2 Telephone:530-272-2448 Fax:530-272-8533 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA rn 0) J s Material Description Well Diagram n. m W G WELL GRADED GRAVEL WITH SILT AND SAND (GW-GM) RHW Cement brown, moist, approximately 40% gravel, 25%cobbles, 25 5 ® sand, 10 %fines 5 Bentonite ® , Gravel 10 ® 10 filter pack Bentonite 15 15 20 25 20 ® ------------------- 25 .. _ - .• - _ SP POORLY GRADED SAND(SP)black sand,weakly cemented 30 30 35 --- X x X x SILTSTONE, brown, weakly lithified, low plasticity 35 X X X X X X X X X X X X X X X X 40 XXxx 40 X x x x X x x x X x x x X X x x X X X X 45 45 X X x X X X X X Gravel XX X X X X X X filter pack 50 X X X X 50 XX X X X X X X ---------------------------------- . 55 SP POORLY GRADED SAND (SP)black sand,weakly 55 cemented 60 so --� ---------------------------------- --- X X X x x x x x SILTSTONE, brown, moderately cemented 65 X X X X 65 X X x x X x x x X x x x X x x x 70 Xxxx 70 X x x x X x x x --- .. �. ----------------------------------- 75 SP POORLY GRADED SAND(SP)black sand_ 75 XXXX ---------- X X X X SILTSTONE, brown, moderately cemented XX X X 80 x x x x 80 Bentonite X XX X X X X X X X X X X X x X X X Drilling Company: Westex Date Started: 8/11/2009 Time Started: 11:30am Drilling Method:Air Rotary Date Completed: 8/12/2009 Time Completed:12:20pm Boring Diameter: 8-5/8 in Elevation (ft): 309.255 Total Depth (ft): 155 Logged By: Pete Holland, CEG Groundwater Level: NFWE Sampling Method: Grab from cuttings