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MONITORING WELL LOG <br /> PROJECT NAME Former RINO Seance Station LOG OF WELL MW-7 <br /> SITE ADDRESS 1001 E Yosemite Avenue BOREHOLE DIAM (in) 8 <br /> Manteca, California WELL DIAM in 2 <br /> DATE STARTED April 16,2005 DRILLER/COMPANY Juan Cela <br /> DATE COMPLETED Aril 16,2005 Mitchell Drilling C-57#672617 <br /> DRILLING METHOD Hollow Stem Auger GEOLOGIST/ENGINEER R David Smith,R G <br /> Split-spoon Sam ler Ramage Environmental <br /> J <br /> N m o <br /> LL Uj <br /> M F' E -� W c T- <br /> 8 8 <br /> 4 in m a co z � DESCRIPTION m o <br /> 0 SP- ,SANDY LOAM Dusky brown moist,soft topsoil 0 <br /> SM <br /> 3 <br /> 6 SAND WITH SILT Moderate brown moist soft grades fine to medium <br /> s 78 sand with 10%silt <br /> s <br /> 5 SM 5 <br /> a <br /> 4 POORLY GRADED SAND Variegated moist soft 100%medium <br /> 5 73 SP micaceous sand <br /> 10 10 <br /> 13 <br /> 5 SAND WITH SILT Pate to dark yellowish brown moist medium dense <br /> B <br /> 134 MW-7-15 SM 85%very fine micaceous sand 15%silt <br /> 9 <br /> 15 15 <br /> Sfahc groundwater at 19 20 feet bgs on 4125105 1s <br /> 6 ML CLAYEY SILT Dark yellowish brown moist to very moist medium stiff <br /> 9 <br /> 165 MW 7-20 low plasticity <br /> 11 <br /> 20 Saturated soil observed at 21 feet bgs on 4116,75 21 20 <br /> SILTY SAND Pale to dark yellownsh brown wet soft 70%very fine <br /> SM micaceous sand 30%sift <br /> 3 <br /> 5 NM MW-7-25 <br /> s <br /> 25 26 25 <br /> POORLY GRADED SAND Variegated wet medium dense 100% <br /> SP medium sand <br /> 4 <br /> 8 NR 313a <br /> 30 30 <br /> Terminated boring at 30 feet Installed 2-inch diameter pvc monitoring well <br /> Well Screen(0 020-inch slot)from 15 to 30 feet <br /> Filter pack of#3 Sand from 13 to 30 feet <br /> Surged and purged well prior to placing bentonde <br /> 35 Hydrated bentonite chips from 11 to 13 feet 35 <br /> Neat cement from 1 to 11 feet <br /> Completed well wnth water tight cap and 8-in diam street box set in concrete <br /> Pae 1 of 1 <br /> II <br />