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s' <br /> 2 . <br /> PROJECT: FORMER VERNALIS PUMP STATION <br /> F-3 Vernalis,California LOg Of Boring NO. ASBA (cont'd) <br /> SAMPLES O <br /> m m y g Z E DESCRIPTION REMARKS <br /> w-' E° E o °o O¢ n NAME(USCS):color,moist,%by wt.,Plast.density,structure, <br /> o" rm Z m m u- cementation,react.w/HCI,geo.inter. _ <br /> SANDY SILT(ML):,olive brown (5Y 4/3),moist,60%fines, <br /> L40%fine to coarse sand,nonplastic,hard <br /> 34 <br /> 35 POORLY GRADED SAND(SP): dark greenish gray (5GY Grab groundwater sample <br /> 'i. 0 4/1),wet,95%fine to medium sand,5%fines - ASBA collected through 5 <br /> 36 Sand fraction fine to coarse - feet of 1-inch OD Sch.40 <br /> PVC screen(0.010-inch <br /> - slot size)placed in <br /> � <br /> _ borehole from 30 to 35; 37 T Sand fraction fine to coarse feet bgs. Hollow-stem <br /> ;? augers retracted to 35 feet <br /> bgs to maintain surface <br /> ' 38 1.7 SILT with SAND(ML): dark greenish gray (5GY 4/1),wet, seal <br /> j80%fines,20%fine sand,low plasticity,firm,very slight odor <br /> 39 2.2 <br /> o.s __ __ _ <br /> 40 1.0 SILTY SAND with GRAVEL(SM) dark greenish gray (5GY <br /> 4/1),wet,60%fine to coarse sand,20%fine gravel,20% - <br /> ',. : . 41 _ nonplastic fines,odor _____________________ _ <br /> 54.3 POORLY GRADED SAND with SILT(SP-SM): dark greenish Sampling refusal at 42.4 <br /> y gray (5GY 4/1),wet,90%fine to coarse sand, 10%low feet.Boring advanced to <br /> 42 plasticity fines 43.0 feet bgs with <br /> ¢ 7.1 hollow-stem augers.Begin <br /> ,L - sampling with split spoon <br /> 43 sampler at 43.0 feet bgs. <br /> N 25.0 Heaving sands <br /> encountered at 43.0 feet <br /> S <br /> bgs. <br /> 44- <br /> 45: <br /> 4 45 - <br /> Bottom of boring at 45.0 feet Borehole destroyed using <br /> ?` Type 1-11 neat cement <br /> 3� 46 - grout placed from total <br /> depth to ground surface <br /> with a tremie pipe. <br /> 47- <br /> 48- <br /> 49- <br /> 50 <br /> 74849 50 <br /> m 51 <br /> OAKBOREV(REV.3100) <br /> �; Geomatrix Consultants Project No.5011.003 Page 3 of 3 <br />