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r <br /> MONITORING WELL LOG <br /> . PROJECT NAME Former RINO Service Station LOG OF WELL MW-4I <br /> SITE ADDRESS 1001 E Yosemite Avenue TOTAL DEPTH (ft) 29 <br /> Manteca California WELL DIAM in 2 <br /> DATE STARTED September 18,2000 DRILLERICOMPANY Robert Vickery <br /> DATE COMPLETED September 18,2000 V&W Drilling(G-57#720904 <br /> DRILLING METHOD Hollow-stem Auger GEOLOG I STIENG I NEER Joseph Ramage, R G #5856 <br /> Straight Drill Ramage Environmental <br /> .r O O <br /> U N <br /> LU <br /> F E J LU C S <br /> QCL <br /> LL m fn V F- <br /> p a (n Z a DESCRIPTION A <br /> WELL COMPLETION Expan Cap, lock,8-in street box <br /> 0 NA NA NA NA Asphalt surface(4-inches thick) Hand dug first 5-feet 0 <br /> 1 1 <br /> 2 2 <br /> 3 3 <br /> 4 4 <br /> 5 ML SANDY SILT Fine sandy silt,medium brown,dry, 5 <br /> 6 no petroleum odor 6 <br /> 7 7 <br /> 8 8 <br /> 9 9 <br /> 10 SM SILTY SAND Silty fine sand light orange-brown,dry, m 10 <br /> 11 no petroleum odor 11 <br /> 12 12 <br /> 13 13 <br /> 14 14 <br /> 15 SP SAND Poorly-graded fine sand,medium brown, 15 <br /> 16 dry,no petroleum odor 16 <br /> 17 17 <br /> 18 18 <br /> 19 19 <br /> 20 7 Static groundwater at 212 feet 20 <br /> 21 r <br /> 21 <br /> 22 CL SILTY CLAY Medium brown,moist,no petroleum odor 22 <br /> ' <br /> 23 <br /> 23 <br /> 2 24 <br /> 4 <br /> 25 25 <br /> 2s 26 <br /> 27 <br /> 27 <br /> 2 <br /> za <br /> 8 <br /> 29 <br /> 29 <br /> 30 Terminated soil boring at 29 feet Installed 2-in diam PVC monitoring well 30 <br /> 31 (0 020-inch slot screen from 14 to 29 feet) 31 <br /> 32 Placed filter pack of#3 Sand from 12 to 29 feet 32 <br /> 33 Surged approx 5 minutes purged approx 5 gallons 33 <br /> 34 Placed seal of hydrated bentonite chips from 10 to 12 feet 34 <br /> 35 Surface seal of neat cement from surface to 10 feet 35 <br /> ' 38 36 <br /> 37 <br /> 37 <br /> 38 <br /> 38 <br /> 3 <br /> 39 9 <br /> 40 40 <br /> Page i of 1 <br />