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Vector Engineering, Inc. -1 <br /> 143E Spring Hill Drive WELL NUMBER: <br /> Grass Valley, CA 95945 Page 1 of 2 <br /> Telephone: 530-272-2448 <br /> Fax: 530-272-8533 <br /> Project: LFG Monitoring Well Installation Remarks: <br /> Client: San Joaquin County <br /> Location: Foothill Sanitary Landfill <br /> 6484 North Waverly Road, Linden, CA <br /> CM <br /> (� <br /> 0 <br /> s Material Description Well Diagram <br /> CL <br /> c� <br /> ML SANDY SILT WITH GRAVEL(ML)brown (7.5YR 5/3), dry, Cement <br /> low plasticity fines, approximately 50 %fines, 40%fine-to <br /> 5 coarse-grained sand, 10% gravel 5 Bentonite <br /> _3ft_:_m_or_e gravel (subrounded, up_to_2_in.) a_nd cobbles <br /> ____ <br /> `SILTY SAND WITH GRAVEL SM d brown 7.5YR 4/4 Gravel <br /> 10 __ SM ( )dry, ( ), 10 filter pack <br /> approximately 50%fine-to coarse-grained sand, 20% low <br /> plastic fines, 30 % gravel (subrounded, up to 3 in.), cobbles Bentonite <br /> 15 - 11-12 ft: gravel (subrounded)and cobbles, 15%fines 15 <br /> ——,4 ° POORLY GRADED GRAVEL(GP)and COBBLE$gravel is <br /> 20 S1N-SM •:•:• • • • ��subrounded, up to 3 in. <br /> ... . . . . --------------------------------J 20 <br /> WELL GRADED SAND WITH SILT AND GRAVEL(SW-SIH) <br /> SC dark brown (10YR 3/3), dry, approximately 70%fine-to <br /> 25 coarse-grained sand, 10%low plastic fines, 20% gravel 25 <br /> \(subrounded) <br /> -------------------------------- <br /> 30 CLAYEY SAND(SC) dark yellowish brown (1DYR 3/4), so <br /> approximately 40 % medium plasticity fines, 60%fine-grained Gravel <br /> sand filter pack <br /> 35 -some weakly cemented sand 35 <br /> -38ft: approximately 30 % medium plasticity fines, 70 % <br /> 40-- _fine_-g_rain_e_d sand,_some_weakly <br /> _ce_m_e_nt_ed_s_and ao <br /> CL SANDY LEAN CLAY(CL) dark yellowish brown (10YR <br /> 45 3/4)moist, approximately 50 % medium plasticity fines, 50% <br /> fine-grained sand <br /> 50 50 <br /> Bentonite <br /> 55 55 <br /> -same, except brown (10YR 4/3) <br /> 60 60 <br /> 65 65-- <br /> -same to bottom, except dark yellowish brown(10YR 3/4), 50- <br /> 70 70% medium plasticity fines, 30-50 %fine-grained sand 70 <br /> Gravel <br /> 75 75 filter pack <br /> 80 80 <br /> as <br /> Drilling Company: PC Exploration Date Started: 8/10/2009 Time Started: 12:45pm <br /> Drilling Method: Hollow Stem Auger Date Completed: 8/11/2009 Time Completed: 1:50pm <br /> Boring Diameter: 8 inch Elevation (ft): 252.056 Total Depth (ft): 92 <br /> Logged By: Kristin Sample, PE Groundwater Level: NFWE <br /> Sampling Method: Grab from cuttings <br />