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February. 2008 <br />Depth (ft) Elevation (ft) <br />+2 <br />0.0 <br />8.0 -it <br />• <br />• <br />• <br />10.0 <br />25.0 <br />9058.0 <br />9056.0 <br />9051.0 <br />043-2241B <br />MONITORING WELL CONSTRUCTION SUMMARY <br />Site Location: Henderson Mill <br />Project Number: 043-2241B <br />Survey Coordinates: E: 408201.00 <br />UTM Z13 NAD83 N: 4409666.00 <br />Well No. GW -11 <br />Boring No: X -Ref: GW -11 <br />Elevation Ground Level 9153.0 ft <br />Top of Casing 9155.0 ft <br />Drilling Summary <br />Total Depth: 30.0 ft <br />Borehole Diameter: 6.0 in <br />Casing Stickup Height. 2.00 ft <br />Driller: Boart-Longyear: Roy Buckenberger <br />Rig: Track mounted, Rotosonic Rig <br />Bits(s): <br />Drilling Fluid: Water <br />Protective Casing: 7' steel casing <br />9048.0 <br />9046.0 <br />9031.0 <br />28.0-yy•r 9028.0 <br />30.0 9026.0 <br />NOT TO SCALE <br />Well Design and Specifications <br />Basis: <br />uasing 5tnng(s): <br />Depth <br />u = uasing, <br />String(s) <br />a = screen <br />Elevation <br />2.0 - 10.0 <br />C1 <br />9054.0 - 9046.0 <br />10.0 - 25.0 <br />S1 <br />9046.0 - 9031.0 <br />9:35 <br />0.288 mS/cm <br />12.8 <br />12:44 <br />7.33 <br />0.316 mS/cm <br />12.1 <br />Casing: C1 2 inch Sch 40 PVC <br />10 ft <br />C2 2 -in diameter Sch 40 <br />PVC threaded end cap <br />Screen: S1 2 inch 0.010 Slot Sch 40 PVC <br />15ft <br />Filter Pack: <br />9 bags <br />10/20 (American #40) from 8.-28.0 ft <br />Grout Seal: 3 Bag Portland Cement <br />From 5 to 0 feet bellow ground surface. <br />Bentonite Seal: 3/8" bentonite <br />chips, hydrated, 2 bags. 1 Bag from 28 to 30 ft, <br />and 1 bag from 5 to 8 ft interval. <br />Construction Time Log <br />Task <br />Start <br />Date <br />Time <br />Finish <br />Date <br />Time <br />Drilling <br />11/6 <br />8:50AN <br />11/6 <br />9:35 <br />0.288 mS/cm <br />12.8 <br />12:44 <br />7.33 <br />0.316 mS/cm <br />12.1 <br />Purging/Develop <br />11/6 <br />10:55 <br />11/6 <br />12:45 <br />11/28 <br />9:55 <br />11/28 <br />13:33 <br />Well Development <br />Depth to water <br />initial: 6.4 ft final: 9 ft <br />(depths to water are from top of PVC casing) <br />11/6/07 - total volume purged: 41 gallons <br />11/28/07 - total volume purged: 47 gallons <br />Stabilization Test Data <br />Time <br />pH <br />Spec. Cond. <br />Temp ("C) <br />10:55 <br />7.93 <br />0.295 mS/cm <br />9.8 <br />12:15 <br />7.35 <br />0.288 mS/cm <br />12.8 <br />12:44 <br />7.33 <br />0.316 mS/cm <br />12.1 <br />Recovery Data <br />0 <br />4Y <br />20 <br />0 <br />Q= -2.5 gal/min <br />S= <br />ft <br />00 00 <br />10 00 20.00 30 00 <br />Time (min:sec) <br />40 00 <br />Comments <br />Supervised by: NOT <br />1:10412241 B10400 QRT043-224 I BAPP A.04FFEO3 xis <br />Golder Associates <br />Date: 11/06/07 <br />