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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: ®11 <br />Page 1 of 2 <br />Project: LFG Monitoring Well Installation <br />Remarks: <br />Client: San Joaquin County <br />Location: Foothill Sanitary Landfill <br />6484 North Waverly Road, Linden, CA <br />0 <br />Material Description <br />Well Diagram <br />CL <br />m <br />ML <br />SANDY SILT (ML) brown (10YR 4/3), dry, approximately 50 <br />Cement <br />% low plastic fines, 50 % fine-grained sand, some cemented <br />5 <br />sand <br />5 Bentonite <br />--- <br />SC <br />— --------------------------------- <br />CLAYEYSAND (SC) dark yellowish brown (10YR 4/4), <br />10 <br />moist, approximately 30 % medium plasticity fines, 70 % fine- <br />ravel <br />to medium -grained sand <br />fiGer pack <br />15 <br />Snn- <br />�� <br />. <br />-14ft: cemented sand layer (sandstone) _ - - - _ _ _ _ _ _ _ -- <br />Bentonite <br />15 <br />SILTY SAND (SM) dark brown (10YR 3/3), moist, 15 - 20 % <br />low plastic fines, 80 - 85% fine- to medium -grained sand <br />20 <br />(mostly fine) <br />2T.0 <br />-some strong to moderately cemented sand layers (sandstone) <br />25 <br />25 <br />30 <br />___ <br />....,:...: <br />., . ,.• , .. <br />— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — <br />30—:.. <br />SC <br />CLAYEY SAND (SC) brown (10YR 4/3), moist, <br />approximately 30 % medium plasticity fines, 70 % fine-grained <br />35 <br />sand, some weak to moderately cemented sand layers from 30 <br />35-::' Gravel <br />- 62ft <br />filter pack <br />40 <br />- 37ft: same, except approximately 15 % fines, 85 % <br />40 <br />fine-grained sand <br />-43ft: same, except dark brown (10YR 3/3) <br />45 <br />45 <br />50--50 <br />-52ft: same, except approximately 40 % fines, 60 % <br />55 <br />fine-grained sand <br />55 <br />-thin layers of claystone/siltstone 53 - 62ft <br />Bentonite <br />60 <br />60 <br />CL <br />SANDY CLAY (CL) brown (10YR4/3), moist, approximately <br />65 <br />60 - 70 % medium plasticity fines, 30 - 40 % fine-grained sand, <br />65-:.- <br />5 .-some <br />someweakly cemented sand <br />70-- <br />0 <br />75-- <br />75 <br />75-:.' <br />80 <br />80--:'. Gravel <br />85 <br />filter pack <br />Drilling Company: Technicon <br />Date Started: 8/5/2009 Time Started: 1:05pm !) <br />Drilling Method: Hollow Stem Auger <br />Date Completed: 8/6/2009 Time Completed: 12:05pm <br />Boring Diameter: 8 in <br />Elevation (ft): 266.42 Total Depth (ft): 106 <br />Logged By: Kristin Sample, PE <br />Groundwater Level: NFWE <br />Sampling Method: Grab from cuttings <br />