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Vector Engineering, Inc. <br />143E Spring Hill Drive <br />Grass Valley, CA 95945 <br />Telephone: 530-272-2448 <br />Fax: 530-272-8533 <br />WELL NUMBER: - <br />109 <br />Page 2 of 2 <br />Project: LFG Monitoring Well Installation <br />Remarks: <br />Client: San Joaquin County <br />Hole overdrilled to 170 ft. <br />Location: Foothill Sanitary Landfill <br />Placed 4 ft of gravel at bottom. <br />6484 North Waverly Road, Linden, CA <br />Deep probe placed at 166 ft, as designed. <br />S <br />rn <br />(n <br />—1 <br />Material Description <br />Well Diagram <br />CL <br />C.7 <br />SILTY SANDSTONE brown, very fine-grained, lenses of <br />siltstone <br />90-- <br />0 <br />95 <br />95 <br />::: <br />95 <br />100______ <br />x x x xx x x <br />X <br />SILTSTONE, brown, moderately cemented, laminated <br />100 <br />•. <br />X x x x <br />X x x x <br />105 <br />SP <br />POORLY GRADED SAND (SP) red and black <br />105 <br />110 <br />110 <br />x X x x <br />X x x x <br />—SILTSTONE, brown, moderately cemented laminated <br />115 <br />X x x x <br />X x x x <br />115 <br />SP <br />POORLY GRADED SAND (SP) olive, fine-grained <br />120 <br />120 <br />125 <br />--- <br />:..:....: <br />__� <br />---------- <br />—SILTSTONE, <br />125 <br />...... <br />Gravel <br />x x x x <br />X x x x <br />brown, moderately cemented <br />filter pack <br />130 <br />SP <br />POORLY GRADED SAND (SP) yellowish brown (10YR 5/4) <br />130-- <br />135- <br />- few thin seams/lenses of siltstone from 135 -145 ft <br />135 <br />. <br />140 <br />140 <br />Z <br />145-- <br />145—.. <br />150 <br />155 <br />155 <br />160 <br />165 <br />za <br />11 <br />165 <br />7n <br />Drilling Company: Westex <br />Date Started: 8/12/2009 Time Started: 1:OOpm <br />Drilling Method: Air Rotary <br />Date Completed: 8/13/2009 Time Completed: 1:OOpm <br />Boring Diameter: 8-5/8 in <br />Elevation (ft): 326.281 Total Depth (ft): 170 <br />Logged By: Pete Holland, CEG <br />Groundwater Level: NFWE <br />Sampling Method: Grab from cuttings <br />