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Vector Engineering, Inc. <br /> 143E Spring Hill Drive WELL ®121 <br /> Grass Valley, CA 95945 Page 1 of 1 <br /> Telephone: 530-272-2448 <br /> Fax: 530-272-8533 <br /> } <br /> Project: LFG Monitoring Well Installation Remarks: <br /> Client: San Joaquin County Moved intermediate plug down 8 ft due to clean sand layer. <br /> Location: Foothill Sanitary Landfill Shallow probe moved up 1 ft-Probe got stuck in augers <br /> 6484 North Waverly Road, Linden, CA during construction and gravel fell in hole before setting pip(. <br /> _ rn <br /> Material Description Well Diagram <br /> 0. <br /> SP-SM POORLY GRADED SAND WITH SILT(SP-SM)dark brown Cement <br /> (7.5YR 3/2), moist, approximately 90% fine-grained sand, 10 <br /> 5 %fines 5 Bentonite <br /> • Gravel <br /> 10 <br /> ______ 10 filter pack <br /> ML SANDY SILT(ML) dark reddish gray(5YR 4/2), moist, <br /> 15 nonplastic, approximately 30 % sand, 70%fines 15 Bentonite <br /> 20 20 <br /> 25 -same, except dark grayish brown (10YR 3/2) 25 <br /> 30 30 <br /> 35 -increasing sand content, approximately 40% sand 35 Gravel <br /> filter pack <br /> 40 —__ 40 <br /> SP-SM POORLY GRADED SAND WITH SILT(SP-SM)dark brown <br /> (7.5YR 3/2), moist, approximately 90% fine-grained sand, 10 <br /> 45-- % fines 45 <br /> 50-- <br /> 0 <br /> SANDSTONE brown moderate) cemented fine-grained 55 .... � y g 55 <br /> Bentonite <br /> 60 60 <br /> ML SILT(ML), dark brown, moist, approximately 30% sand, 50 <br /> 65 %fines, 20 % gravel, pieces of sandstone s5 <br /> SP-SM J, POORLY GRADED SAND WITH SILT(SP-SM)dark brown, <br /> 70 moist, 80 -90 %fine-grained sand, 10-20 %fines 70 <br /> Gravel <br /> 75 75 filter pack <br /> 80 -- <br /> 85 -- <br /> 0 85 85 <br /> Drilling Company: Technicon Date Started: 8/3/2009 Time Started: 7:20am <br /> Drilling Method: Hollow Stem Auger Date Completed: 8/3/2009 Time Completed: 3:20pm <br /> Boring Diameter: 8 in Elevation (ft): 245.662 Total Depth (ft): 86.5 <br /> Logged By: Pete Holland, CEG Groundwater Level: NFWE <br /> Sampling Method: Grab from cuttings <br />