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PROJECT 4110 INDUSTRIAL WAY <br /> Tracy, California Log of MW-1 PAGE 1 OF 1 <br /> Boring location See Figure 2 <br /> Date started 9129/93 1 Date finished 9129193 LOGGED BY Peter Cusack <br /> Drilling method Hollow stem auger, 6-inch outside diameter <br /> Hammer weight 140 pounds I Drop 30 inches <br /> Sampler California Modified, 2 5-inch O D , 2 0-inch I D WELL CONSTRUCTION <br /> SAMPLES <br /> a. Q) u m a MATERIAL DESCRIPTION Traffic rated <br /> o m a E m g Emco-Wheaton <br /> o 4 y <br /> Box <br /> 3-inch asphalt avement <br /> 1 SILTY SAND with GRAVEL (SM) Locking <br /> brown, loose, moist, no odor "' 'K, Well <br /> 2 <br /> ; r Plug <br /> 3 CLAYEY SAND (SC) <br /> dark brown, moist, very stiff, no odor ^Vskk. �` Cement <br /> 4- <br /> 1) 22 ,u; grout with <br /> 4 <br /> 5- <br /> 5% <br /> �w <br /> xs bentonite <br /> 6— <br /> ..,h2 <br /> 7 Bentonite <br /> 8 color change to tight brown pellets <br /> 9 <br /> 2-inch <br /> 10 diameter <br /> 0 <br /> 11 _ stabilized water level (1014193) Sch 40 <br /> SANDY CLAY (CL) PVC <br /> 12 light brown, very moist, hard, no odor € v; <br /> 13 SZ-_ water encountered at a depth of 13 2 feet 0 02-inch <br /> 14— during drilling (9129193) n <br /> ry Z« slots <br /> 15- <br /> 16— 0 43 <br /> 17 hh <br /> Monterey <br /> 18 #3 sand <br /> 19 <br /> 20 Threaded <br /> 21 end cap <br /> Boring terminated at a depth of 21 0 feet <br /> 22 Well installed as illustrated <br /> 23 Note (1) Blow counts have been corrected to <br /> 24 SPY-N values <br /> (2) OVM readings are in parts per million <br /> 25 or(ppm) <br /> 26- <br /> 27- <br /> 28- <br /> 29 <br /> 6272829 <br /> 30 <br /> TREADWELL & ROLLO, INC. Project No 1107 07 Figure 3b <br /> Consulting Engineers and Scientists <br />