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Date Begin - End: 10/16/2017 Drilling Company: Taber Drilling BORING LOG MW -12 <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. 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 />Latitude: 38.20843° N <br />o <br />° <br />x w <br />CD <br />Longitude: -121.40899° E <br />m <br />�_ <br />O <br />g <br />o <br />a co <br />m <br />_j <br />Approximate Ground Surface Elevation (ft.): 10.00 <br />a <br />m ° a <br />a <br />� <br />o <br />� <br />N <br />E <br />c co <br />E c w <br />Location Offset: Kile Road <br />E <br />o <br />Z� <br />J <br />o <br />R.2 <br />r <br />Surface Condition: Access Road <br />om a <br />m Z <br />o <br />c <br />c <br />m <br />�' <br />Z <br />.N <br />a> a <br />C, N <br />m <br />E <br />m <br />�` " <br />o� <br />O n <br />N XT <br />U E <br />° c <br />O <br />�' <br />N <br />N <br />N <br />m <br />7 <br />a' <br />N a <br />a w o <br />c9 <br />Lithologic Description <br />co <br />m: a <br />X? <br />J to <br />3 U <br />o <br />a <br />a. <br />te <br />a? <br />Sandy Lean CLAY (CL): medium plasticity, dark <br />brown to olive gray, moist, hard, with fine-grained sand <br />5 5 <br />BC=14 <br />12" <br />18.1 104.0 <br />2" SCH 40 <br />Silty SAND (SM): fine-grained, brown, moist, very <br />5 0/6 <br />P=4.5.5 <br />Solid PVC <br />Riser <br />dense <br />Lean CLAY with Sand (CL): medium plasticity, olive <br />gray, moist, stiff, with fine-grained sand <br />0 10 <br />BC=3 <br />3" <br />4 <br />6 <br />P=2.0 <br />15 <br />-------------------- <br />Clayey SAND (SC): fine-grained, low plasticity, gray, <br />moist to wet, medium dense <br />gC=3 <br />7 <br />17" <br />44 NP NP :` Portland <br />Cement Grout <br />9 <br />10 20 <br />BC=3 <br />18" <br />4 <br />7 <br />Bentonite Seal <br />— — — — — — — — — — — — — — — — — — — <br />20/40 Sand <br />Lean CLAY with Sand (CL): medium plasticity, gray, <br />Pack <br />15 25 <br />wet, hard, with fine-grained sand <br />BC=9 <br />11" <br />14 <br />20 <br />P=4.5 <br />I <br />12^ <br />SCH 40 <br />Slotted 0.010 <br />PVC Screen <br />20 30 <br />Sandy Lean CLAY (CL): medium plasticity, grayish <br />BC=6 <br />18" <br />I <br />I I <br />brown, wet, very stiff, with fine-grained sand <br />9 <br />9 <br />P=2.5 <br />The monitoring well was terminated at approximately <br />GROUNDWATER LEVEL INFORMATION: <br />31.5 ft. below ground surface. Monitoring Well installed <br />M Groundwater was observed at approximately 15 ft. below ground <br />surface during <br />to a depth of 31.5 ft. <br />GENERAL NOTEIS: <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 -12 <br />FIGURE <br />DRAWN BY: <br />TD <br />KL <br />INF -ELDER <br />CHECKED BY: <br />Rs <br />A-14 <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 />