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8" STEEL COVER WITH HINGED OPENING AND <br />LOCKING DEVICE <br />2.0' <br />1/4" DIAMETER WEEP HOLE (MIN) <br />2.5' <br />GROUND MINIMUM <br /> <br />-- 0' <br /> = M <br /> <br />Km -SHALE <br />90' <br /> <br /> DAKOTA <br />Kd SANDSTONE <br /> (AQUIFER) <br />-229 D <br />d <br />D <br />0 <br />3 <br />VENTED CAP OR PLUG <br />PROVIDE LOCK (HEAVY DUTY WITH <br />MASTER KEY) <br />COARSE SAND OR PEA GRAVEL <br />1" 2" 6" <br />6' (MAX) <br />CONCRETE PAD <br />BENTONITE PELLETS <br />Kbc BURRO CANYON =y , CEMENT GROUT WITH 1-4% BENTONITE <br />p^ FORMATION - - ADDITIVE <br /> <br /> <br />-F -4017 <br /> <br />N -. _.- HEAVY DUTY STEEL CENTRALIZERS, <br />- - - SPACED AT 100' <br />+i <br /> <br />o 4 1/2" O.D. THREADED AND COUPLED STEEL <br />_ .... - CASING, API H-40 JOINTS, API 5 CT <br /> CEMENT GROUT, INITIAL LIFT TYPE II <br />Jnlb _ BRUSHY BASIN PORTLAND CEMENT, WITH SET <br />(CONFINING LAYER) ACCELERATOR <br />- - - ! FINE SAND <br />Z -- <br />= <br />-=- BENTONITE PELLET (RETARDED HYDRATION) <br />0 _ <br />_ 40' (MIN) SEAL <br /> <br /> <br />OC -_-__-_- 5• <br />0 -1020' 2 <br /> <br />Z 5' <br />O <br /> _ <br />STEEL TRANSITION COUPLING ASTM F480 <br /> z - THREADS <br />O <br />U) "" <br />Z Jms z o - 4" 1. D. SCHEDULE 80 PVC 0.020" MILL?SLOTTED <br />UPPER RIM <br />Y :: - <br />M <br />_ <br />CASING ASTM F 480 FLUSH THREADED JOINTS <br />cv (Upper o w v - (NOTE: DEFINED SCREEN LENGTH IS 100') <br />SALT WASH <br />Rim) 00 <br />w <br />o m (AQUIFER) <br />E o } <br />x _ <br />- <br />SILICA SAND, SIZE 10-20 <br /> m0 - <br />. o Ld PVC, SCHEDULE 80 END CAP <br />O <br />~ 11"t DIAMETER BOREHOLE <br /> <br /> -1100' <br /> <br /> <br /> Denison Mines (USA) Corp. dFNISONr)/ <br /> MINES <br /> REVISIONS Project: Sunda Mines Group <br /> JMS 111 Date County: San Miguel State: <br />Colorado <br /> <br />y <br />/ Location: X = 2044061.6500 Y = 1522044.2900 Z = 5765 <br /> l( MW SOUTH <br /> <br /> <br /> Deep Monitoring Well <br /> -1370' BOTTOM OF SALT WASH <br />3-3-2010