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.7 <br />E <br />C7 <br />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 ® SG -22 <br />Page 1 of I <br />Project: LFG Monitoring Well Installation <br />Remarks: <br />Client: San Joaquin County <br />Hole overdrilled to 79 ft. <br />Location: North County Sanitary Landfill <br />Placed 1 ft of gravel at bottom. <br />17720 East Harney Lane, Lodi, CA <br />Deep probe placed at 78 ft, as designed. <br />0) <br />0 <br />Material Description <br />Well Diagram <br />D <br />0 <br />SM <br />SILTY SAND (SM) yellowish red (5YR 5/6), moist, <br />r,$oll Cement <br />approximately 30 % fines, 70 % fine-grained sand <br />5 - <br />5 Bentonite <br />SC <br />CLAYEY SAND (SC) strong brown (7.5YR 5/6), moist, <br />10 <br />medium plasticity, approximately 40 % fines, 60 % sand <br />Gravel <br />10 filter pack <br />Bentonite <br />15 <br />15 <br />SM <br />- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <br />SILTY SAND (SM) reddish brown (5YR 4/4), no cohesion, <br />20-- <br />approximately 30 % fines, 70 % fine-grained sand <br />20 <br />25 <br />_ <br />SC_ <br />- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <br />CLAYEY SAND (SC) yellowish brown (1 OYR 5/4), moist, low <br />25 <br />plasticity, approximately 40 % fines, 60 % sand <br />Gravelfilter <br />30-- <br />same at 29ft, except reddish brown (5YR 4/4) <br />pack <br />35 <br />35 <br />40-- <br />- <br />CL <br />- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <br />SANDY CLAY (CL) brown (7.5YR or 10YR 4/3), moist, stiff, <br />40 <br />Bentonite <br />- <br />low to medium plasticity, approximately 70 % fines, 30 % sand, <br />45-- <br />high dry strength <br />45 <br />50-- <br />55-- <br />- same, except brown (7.5YR 4/4) and approximately 50 % <br />'T <br />fines, 50 % sand <br />60 <br />SC <br />- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <br />CLAYEY SAND (SC) brown (7.5YR 4/3), moist, <br />60-2. <br />approximately 40% fines, 60 % fine-grained sand <br />- -mg Gravel <br />filter pack <br />65 <br />------------- ----- <br />SANDY CLAY (7. moist, low to medium <br />65 <br />plasticity, approximately 50 % fines, 50 % sand <br />70-- <br />70_ <br />75-- <br />75 . <br />Drilling Company: PC Exploration <br />Date Started: 7/20/2009 Time Started: 10:00am <br />Drilling Method: Hollow Stem Auger <br />Date Completed: 7/22/2009 Time Completed: 11:45am <br />Boring Diameter: 8 inch <br />Elevation (ft): 112.598 Total Depth (ft): 79 <br />Logged By: Pete Holland, CEG <br />Groundwater Level: NFWE <br />Sampling Method: Grab from cuttings <br />I <br />