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Date Begin - End: 10/11/2017 Drilling Company: Taber Drilling BORING LOG MW -5 <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 RESULTS <br />MONITORING WELL <br />CONSTRUCTION' <br />Latitude: 38.22848' N <br />a) <br />m <br />Longitude: -121.41278'E <br />> <br />C. <br />a <br />o <br />m n <br />w <br />Approximate Ground Surface Elevation (ft.): 15.00 <br />a <br />m ° a <br />(D <br />o <br />� <br />c a <br />E o a <br />Location Offset: Nowell Road <br />F <br />o <br />of <br />E <br />71 <br />Y o <br />.T ;- <br />O i <br />Ln <br />Surface Condition: Bare Earth and Weeds <br />m <br />a <br />m a. <br />m <br />'o Z <br />o <br />to M <br />c <br />•� <br />c <br />'w <br />c <br />'m <br />'v Z <br />a> a <br />O- N <br />@ <br />E <br />(0 <br />o <br />o c �' <br />o <br />m Z <br />v E <br />rn > <br />a`� <br />c <br />m 0 <br />�' <br />m <br />N <br />m <br />(0 <br />Q' <br />m u <br />N Z <br />C w ❑ <br />(D <br />Lithologic Description <br />cn <br />ED a <br />W <br />D rn <br />01 <br />❑ <br />o- <br />0- <br />a <br />Sandy Lean CLAY (CL): medium plasticity, dark <br />brown, moist, stiff, with fine-grained sand <br />Silty SAND (SM): fine-grained, brown, moist, medium <br />dense <br />10 5 <br />BC=7 <br />17" <br />2" SCH 40 <br />Lean CLAY with Sand (CL): medium plasticity, olive <br />10 <br />Solid PVC <br />gray, moist, hard, with fine-grained sand <br />15 <br />Riser <br />P=>4.5 <br />Sandy SILT (ML): low plasticity, yellowish brown, <br />5 10 <br />moist, hard, with fine-grained sand <br />BC=9 <br />16" <br />21.3 99.0 <br />17 <br />20 <br />P=>4.5 <br />Sandy Lean CLAY (CL): low to medium plasticity, <br />gray, moist to wet, medium stiff, with fine-grained sand <br />0 15 <br />BC=2 <br />14" <br />Portland <br />5 <br />Cement Grout <br />5 <br />P=1.0 <br />Clayey SAND (SC): fine-grained, olive gray, wet, <br />-5 20 <br />loose <br />BC=4 <br />NR <br />6 <br />7 <br />Bentonite Seal <br />Silty SAND (SM): fine-grained, olive gray, wet, <br />medium dense <br />20/40 Sand <br />Pack <br />-10 25 <br />BC=6 <br />18" <br />17 <br />10 <br />16 <br />i <br />�I <br />2" SCH 40 <br />Slotted 0.010 <br />Lean CLAY with Sand (CL): medium plasticity, olive <br />PVC Screen <br />-15 30 <br />gray, wet, hard, with fine-grained sand <br />BC=6 <br />18" <br />II <br />8 <br />17 <br />P=>4.5 <br />The monitoring well was terminated at approximately <br />GROUNDWATER LEVEL INFORMATION: <br />31.5 ft. below ground surface. Monitoring Well installed <br />4 Groundwater was observed at approximately 17 ft. below ground <br />to a depth of 31.5 ft. <br />surface during drilling. <br />GENERAL NOTES: <br />20 35 <br />The exploration location and elevation are approximate and were <br />estimated by Kleinfelder. <br />PROJECT NO.: <br />20181913 <br />BORING LOG MW -5 <br />FIGURE <br />DRAWN BY: <br />TD <br />("KL <br />E/NFEL 'OER <br />CHECKED BY: <br />RS <br />A-7 <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 />