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cC <br />C <br />F <br />G <br />it <br />it <br />Date Begin - End: 10/24/2017 Drilling Company: Taber Drilling BORING LOG MW -16 <br />Logged By: <br />B. Campbell Drill Crew: <br />Andy <br />& Stephen <br />Hor.-Vert. Datum: Not Available Drilling Equipment: CME -75 (truck -mounted) Hammer Type - Drop: 140 Ib. Auto - 30 in. <br />Plunge: <br />-90 degrees Drilling Method: Hollow Stem Auger <br />Weather: <br />Sunny Bore Diameter: 8 in. O.D. <br />FIELD EXPLORATION <br />LABORATORY <br />RESULTS <br />MONITORING WELL <br />CONSTRUCTION' <br />Latitude: 38.18962° N <br />(D <br />c a) <br />o <br />Longitude: -121.39889° E <br />y <br />;� <br />'o <br />a <br />o <br />v <br />o <br />(V N <br />c <br />Approximate Ground Surface Elevation (ft.): 10.00 <br />a <br />F- <br />m° a <br />a <br />a11 0i <br />o <br />r <br />a <br />E c <br />Location Offset: Peltier Road <br />o <br />Z Of <br />— <br />�* <br />_E <br />c <br />'x ° <br />Surface Condition: Gravel Road <br />m a <br />Uo <br />m 0 <br />pZ <br />0� <br />U <br />�' <br />'y <br />�' <br />'y <br />Z <br />n> d <br />C' N <br />d <br />y <br />o' <br />N Z <br />(n <br />.0. C <br />O O <br />Z <br />N <br />M <br />Q <br />y 11 <br />m Z <br />Lithologic Description <br />Q w ❑ <br />cD <br />@ <br />u> <br />8 <br />mm a <br />w <br />> <br />U) <br />U <br />❑ <br />(L <br />0- <br />0- i <br />Clayey SAND (SC): fine-grained, low to medium <br />plasticity, brown, moist <br />Sandy SILT (ML): low plasticity, olive gray, moist, <br />hard, moderately cemented <br />5 5 <br />BC=12CH <br />14' <br />40 <br />38 <br />Sold PVC <br />50 <br />Riser <br />P=>4.5 <br />0 10 <br />BC=8 <br />13" <br />26 <br />46 <br />P=>4.5 <br />c7 <br />Silty SAND (SM): fine to medium -grained, non -plastic <br />SY 15 <br />to low plasticity, brown, wet, dense <br />BC=7 <br />18^ <br />Portland <br />14 <br />Cement Grout <br />19 <br />-10 20 <br />— -- ---- <br />Sandy SILT (ML): low plasticity, olive gray, wet, hard, <br />BC=4 <br />17" <br />weakly cemented <br />15 <br />22 <br />P=>4.5 <br />Bentonite Seal <br />20/40 Sand <br />Pack <br />15 25 <br />medium plasticity, brown, very stiff <br />BC=5 <br />18" <br />33 5 <br />14 <br />18 <br />l <br />P=3.5 <br />I <br />. <br />Clayey SAND (SC): fine-grained, low plasticity, brown, <br />l <br />2" SCH 40 <br />wet, medium dense <br />I <br />Slotted 0.010 <br />PVC Screen <br />-20 30 <br />BC=4 <br />16" <br />� I <br />11 <br />. <br />12 <br />The boring was terminated at approximately 31.5 ft. <br />GROUNDWATER LEVEL INFORMATION: <br />below ground surface. Monitoring Well installed to a <br />Q Groundwater was observed at approximately 15 ft. below ground <br />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.: 20181913 <br />BORING LOG MW -16 <br />FIGURE <br />DRAWN BY: <br />PR <br />KLE/NFELDER <br />CHECKED BY: TD <br />A-18 <br />PACIFIC GAS AND ELECTRIC <br />Bright People. Right Solutions. <br />DATE: <br />10/25/2017 <br />LINE 108 REPLACEMENT PROJECT (R-515) <br />THORNTON, CALIFORNIA <br />REVISED: <br />11/27/2017 <br />PAGE: 1 of 1 <br />