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Date Begin - End: 10/09/2017 Drilling Company: Taber Drilling BORING LOG MW -2 <br />Logged By: <br />B. Campbell Drill Crew: <br />Andy <br />& David <br />Hor.-Vert. Datum: Not Available Drilling Equipment: CME -55 Track Rig Hammer Type -Drop: 140 Ib. <br />Auto - 30 in. <br />Plunge: <br />-90 degrees Drilling Method: <br />Hollow Stem Auger <br />Weather: <br />Sunny Bore Diameter: <br />8 in. O.D. <br />FIELD EXPLORATION <br />LABORATORY <br />RESULTS <br />MONITORING WELL <br />CONSTRUCTION' <br />ar <br />Latitude: 38.23183° N <br />> <br />c <br />a <br />ci <br />N <br />m <br />Longitude: -121.42257° E <br />d <br />C1. <br />�� <br />d <br />a <br />o <br />axi <br />c <br />Approximate Ground Surface Elevation (ft.): 10.00 <br />m ° a <br />o <br /># <br />ii <br />E c a� <br />m <br />Location Offset: New Hope Road <br />F <br />i <br />``=m <br />ZW <br />-- <br />3 <br />J <br />- <br />R 2 �- <br />p <br />o. <br />Surface Condition: Bare Earth and Weeds <br />2 <br />a <br />vd <br />m° <br />o <br />U� <br />a� <br />m <br />c <br />Z <br />'yu <br />a� a <br />`` <br />E <br />m <br />v <br />os <br />�° <br />(D <br />rn >' <br />m o <br />w <br />m <br />W <br />m <br />v <br />mZ <br />.:Rm <br />o <br />(D <br />Lithologic Description <br />(n <br />m� a <br />X <br />W <br />3 U <br />0 <br />a- <br />(L <br />a <br />Sandy Lean CLAY (CL): medium plasticity, dark <br />brown, moist, hard, with fine-grained sand, trace fine <br />gravel <br />5 5 <br />no gravel below 5 ft <br />BC=4 <br />13" <br />2" SCH 40 <br />6 <br />Solid PVC <br />7 <br />Riser <br />0 10 <br />brown <br />BC=4 <br />17" <br />37 16 <br />7 <br />11 <br />P=>4.5 <br />5 15 <br />Q <br />SiltySAND SM : fine-grained, brawn, moist to wet, <br />( ) 9 <br />BC=5 <br />15" <br />22.4 104.6 <br />Portland <br />medium dense to dense <br />27 <br />18 Cement Grout <br />10 20 <br />:. <br />BC=3 <br />16" <br />22 <br />7 <br />10 <br />Bentonite Seal <br />Poorly graded SAND with Silt (SP -SM): fine to <br />medium -grained, gray, wet, medium dense <br />20/40 Sand <br />Pack <br />15 25 <br />BC 518" <br />5.7 <br />10 <br />Lean CLAY with Sand (CL): medium plasticity, bluish <br />12 <br />P=3.0 <br />l <br />gray, wet, very stiff, with fine-grained sand <br />2" SCH 40 <br />Slotted 0.010 <br />PVC Screen <br />20 30 <br />BC=6 <br />16" <br />I. <br />8 <br />N. 10 <br />The monitoring well was terminated at approximately <br />GROUNDWATER LEVEL INFORMATION: <br />31.5 ft. below ground surface. Monitoring Well installed <br />$ Groundwater was observed at approximately 16 ft. below ground <br />to a depth of 31.5 ft. <br />surface during drilling. <br />GENERAL NOTES: <br />25 35 <br />The exploration location and elevation are approximate and were <br />estimated by Kleinfelder. <br />PROJECT NO.: <br />20181913 <br />BORING LOG MW -2 <br />F I G U R E <br />DRAWN BY: <br />TD <br />('OKL <br />E/NFEL DER <br />CHECKED BY: <br />RS <br />A -`t,1 <br />PACIFIC GAS AND ELECTRIC <br />Bright People. Right Solutions. <br />DATE: <br />11/27/2017 <br />LINE 108 REPLACEMENT PROJECT (R-515) <br />THORNTON, CALIFORNIA <br />REVISED: <br />- <br />PAGE: 1 of 1 <br />