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Vector Engineering, Inc. ®11 143E Spring Hill Drive WELL NUMBER: SG Grass Valley CA 95945 Page 2 of 2 Telephone: 530-272-2448 Fax: 530-272-8533 lProject: LFG Monitoring Well Installation Client: San Joaquin County Location: Foothill Sanitary Landfill 6484 North Waverly Road, Linden, CA Remarks: Hole overdrilled to 166 ft. Placed 6 ft of gravel at bottom. Deep probe placed at 160 ft, as dE rn U J s Material Description CL a C U) � o C7 SP POORLY GRADED SAND (SP) black sand 90-- 95 100 1 105 1 110 --- =-- X X X X -----------------------------------1 SILTSTONE, brown, interbedded sand X X X X X x x x X x x x 115 x x x x xxxx 1 X X X X SP x x X x _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ POORLY GRADED SAND (SP) black and brown, fine- to 120 1 medium -grained 125 1 30 130-- 135 135-- 1 --- ............ X X X X ------ SILTSTONE, brown, moderately cemented 1 140 xxxx X x X X xxxx_ _ _ _ _ _ _ _ _ _ _ _ ---------------------- ---- POORLY GRADED SAND (SP) brown, fine-grained POORLY 145 — — — _:----------------------------------- X X X X X X X X SILTSTONE , brown, moderately cemented 1 150 X x x x x x X x xx x x 155 XXXX 1 X X X X XX X X X x x x XXX X 1 160 XX x x x X x x x X x x x 165 X X X X X x x x 1 Drilling Company: Westex Drilling Method: Air Rotary Boring Diameter: 8-5/8 in Logged By: Pete Holland, CEG Sampling Method: Grab from cuttings 90 95 00 05-- 10-- 15--: 51015 20 25-- 30--: 35 40 45 50 55 60- 65_2' 065 : Well Diagram Gravel filter pack Date Started: 8/13/2009 Time Started: 3:00pm Date Completed: 8/14/2009 Time Completed: Elevation (ft): 319.807 Total Depth (ft): 166 Groundwater Level: NFWE