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Vector Engineering, Inc. 143E Spring Hill Drive WELL 7 Grass Valley, CA 95945 Page 2 of 2 Telephone:530-272-2448 Fax: 530-272-8533 Project: LFG Monitoring Well Installation Remarks: Client: San Joaquin County Hole overdrilled to 150 ft. Location: Foothill Sanitary Landfill Placed 4 ft of gravel at bottom. 6484 North Waverly Road, Linden, CA Deep probe placed at 146 ft, as designed. rn CL Material Description Well Diagram o D a POORLY GRADED SAND SP continued X X X X 90 XX SILTSTONE brown, moderately cemented 90 X X X X X X X X X X X X X X X X 95 xxxx 95 X x x x _ •. ._..�. - ----- SP POORLY GRADED SAND (SP)black sand weakly to 100 �. moderately cemented 100 105 .� �. ---------------------------------- X X X X SILTSTONE, brown, moderately cemented, laminated 105 XX X X X x x x X x x x 110 X X X X 110 X X X X X X X X X X X X Gravel 115 X X X X 115 filter pack X X X X X X X X X x x x xxxx 120120 X x x x X x x x X x x x X x x x 125 X X X X -several thin (about 1 ft) beds of sandstone from 125-146 ft 125 XX X X X x x x X x x x X X X X 130 130 X X X X X x x x X x x x X x x x 135 X X X X 135 X X X X X X X X X X X X X X X X 140 xxxx 140 X x x x X x x x X x x x 145 X X X X 145 X X X X X X X X X X X X 150 _ X X X X 150_ 155-- 155-- 160 - 55=160 - 160- 165 - 60=165 - 165= iza 170- Drilling Company: Westex Date Started: 8/7/2009 Time Started: 3:30pm Drilling Method:Air Rotary Date Completed: 8/11/2009 Time Completed: 10:50am Boring Diameter: 8-5/8 in Elevation (ft): 305.676 Total Depth (ft): 150 Logged By: Pete Holland, CEG Groundwater Level: NFWE Sampling Method: Grab from cuttings