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Vector Engineering,Inc. WELL '11 143E Spring Hill Drive 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 Hole overdrilled to 166 ft. Location: Foothill Sanitary Landfill Placed 6 ft of gravel at bottom. 6484 North Waverly Road, Linden, CA Deep probe placed at 160 ft, as designed. J CL Material Description Well Diagram CL GWe • WELL GRADED GRAVEL WITH SAND AND COBBLES Cement w —————————————————————————— J— • e 5 SP ——————POORLY GRADED SAND (SP)black sand 5 Bentonite Gravel 10 10 filter pack : .:X—X- Bentonite 15 x—xxz� ---------------------------------- 15 x x x x SILTSTONE, brown, moderately cemented, laminated x x x x x x x x ----------------------------------- 20 SP POORLY GRADED SAND (SP)black and brown 20 25 25 :_. --- x x x x x x x x SILTSTONE, brown, moderately cemented, laminated 30 x x x x 30-- x x x x x x x x x x x x x x x x 35 x x x x 35 x x x x x x x x x x x x x x x x 40 x x x x x x x x 40-- x x x x x x x x x x x x --- .. �4 Kx ----------- : 45 SPADE — —POORLY GRD SAND (SP)black sand----------- a5 x'x x x x x x x SILTSTONE, brown, moderately cemented Gravel 50 X X x x 50 : x x x x filter pack x xx x x x x x x x x x 55 x x x x 55-- x x x x x x x x x x x x x x x x 60 x x x x 60-- x x x x x x x x _______ __________ SPPOORLY GRADED SAND (SP)black sand 65 --- x'Xxx --------------- s5 x x x x SILTSTONE, brown, moderately cemented x x x x x x x x 70 XX x X 70 x x x x x x x x x x x x 75 X x X X 75 X X X X X X X X x x x x x x x x 80x x X X $O X x x x x x x x x x x x -- x�-4.z ------------------- Drilling Company: Westex Date Started: 8/13/2009 Time Started: 3:OOpm Drilling Method:Air Rotary Date Completed: 8/14/2009 Time Completed: Boring Diameter: 8-5/8 in Elevation (ft): 319.807 Total Depth (ft): 166 Logged By: Pete Holland, CEG Groundwater Level: NFWE Sampling Method: Grab from cuttings