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Exxon Mobil Corporation <br />Permit Number 4956640H <br />GVVS-31 <br />Page 2 <br />Colony Mine Water Monitoring Well <br />(In-mine well location) <br />Well ID: WW-CC-1 D1 <br />Well Permit No. 49566-MH <br />NW 114 SW 114 Section 7 Twp 5S, Range 96W <br />De Ri : U nderground Drill Contractor a ito Associates, Inc Surface Elevation: 7,083.0 ft <br /> Hole Formation Mud Hole Casing Shoe <br />Feet Size Contacts Type Depth' Size Type Depth <br /> MD1TVD MDRVD MDRVD Top of Casing 7084.5 <br /> Ground Surface 7083.0 <br /> Cement / bentonde grout - troweled surface <br /> 21 ft <br /> <br />=21-30 ft ? ?`. _.._ ...................._..._._ _ __...................,.......... <br />Vug zone - bentonRe grouVgraveUcement <br />25 Solid PVC gro uHbentonita pellets <br /> <br />c 4.5" <br /> BentonNe /Cement Grout <br /> X . <br />50 O <br />m - ----- <br /> 6.25" ? Air/Water Bentonde(3%B"pellets) --_-- 55-6011 <br /> <br /> ?•:r teii?i <br /> <br />75 <br />Slotted <br />PVC <br />;5? <br />?''• <br />Sand Filter <br /> 4.5" (0.032" slot size) <br />•:s 8-12 Mesh silica sand <br /> :iisi <br /> <br />100 <br />(B Groove) <br />_ <br />- ll <br />100 ft <br />100 ft <br /> 100-105.2 ft Solid4 PVC w/ bottom cap <br />. <br />_ 100 105.2 ft BeMOnite (3/8" pe0ets) 100 105.2 <br />-------------- - - - - <br /> ._.. __ ......................... <br />4.5" __ <br />_.... <br />. <br /> 2" Pump not permanently installed <br /> Run to bottom during sampling then retrieved <br />125 <br />Record <br />Grout <br />Material <br />Cement grout/bentonite grout (1:112) <br />Cement grout/bentonde <br />grout/gravellbentonke pellets <br />(5041:2541:100#:50#) <br />Bentonite grout/cement grout <br />Bentonite pellets (3/8') <br />Silica Sand (8 -12 mesh) <br />Bentonite Pellets (3/8) <br />Amount Density Interval Placeme <br /> 00 <br />75# 10.7 #/gal 0-21 pour <br />132,433 25Wgal 21 - 30 pour <br />65.0# 10.7#/gal 30 - 55 tremmie <br />7.3# 10.7411gal 55 - 60 pour <br />12 bags 20#/gal 60-100 pour <br />7.4# 10.7#/gal 100 - 105.2 pour <br />WW-CC Wells WW-CC-1 Dt.)dsx