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MONITORING WELL LOG <br /> • PROJECT NAME Nelson Ready-Mix Site LOG OF BORING SB-7 <br /> SITE ADDRESS 1040 Moffat Boulevard TOTAL DEPTH (ft) 20 <br /> Ripon, California BORING DIAM in 6 <br /> DATE STARTED 5/28/1998 DRILLERICOMPANY Dave Gonzales <br /> DATE COMPLETED 5121 811998 Spectrum Exploration <br /> DRILLING METHOD Hollow-Stem Auger GEOLOGISTIENGINEER Joseph Ramage, R G #5856 '71, <br /> Split-Spoon Sampler Ramage Environmental <br /> J <br /> O <br /> y m N <br /> T DESCRIPTION <br /> E w <br /> F m in a tl m N l— <br /> rL a ' n <br /> 2 '2 U it <br /> w <br /> 0 03 m a U Z D <br /> 0 0 <br /> 1 Dark brown sandy loam,loose dry,no petroleum odor 1 <br /> 2 2 <br /> 3 3 <br /> 4 SP GRAVELLY SAND Probably former tank pit backfill 4 <br /> • 52 B2 Poorly-graded medium sand and 314-inch angular gravel, 5 <br /> 6 2 gray-brown,moist very loose, strong petroleum odor 6 <br /> 7 7 <br /> 8 8 <br /> 9 9 <br /> 10 z° 79 SP SAND Poorly graded fine-medium sand 10 <br /> 11 23 gray, moist,medium dense,strong petroleum odor 11 <br /> 12 12 <br /> 13 13 <br /> 14 14 <br /> 15 ,e 216 SB7-15 SW GRAVELLY SAND Well graded sand with fine gravel and silt 15 <br /> 16 " gray moist,medium dense,strong petroleum odor 16 <br /> 17 17 <br /> 18 7 Encountered saturated soil and groundwater at 19'bgs 18 <br /> 19 19 <br /> 20 , 45 S87-20 SM SILTY SAND Fine to medium sand with some sift,abundant mica, 20 <br /> 21 's gray wet medium dense, strong petroleum odor 21 <br /> 22 22 <br /> 23 Terminated soil boring at 20 feet 23 <br /> 24 24 <br /> 25 Groundwater at 14 feet Sampled by Hydropunch and bailer 2$ <br /> • 26 Groundwater cloudy,no effervescence petroleum odor,sheen 26 <br /> 27 27 <br /> 28 Abandoned borehole with neat cement using tremie method 28 <br /> 29 29 <br /> 30 30 <br /> Page 1 of 1 <br />