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• 2.05.3 <br />Water Treatment Building <br />A small (10'X10') water treatment building located northwest of Pond C used to add CDPS <br />approved chemicals to the water as necessary for clarification. <br />Bent Protectors <br />Two concrete bent protectors located at the coal stockpile level. One is three sided with 20 <br />feet high walls, 42 feet long and 16feet wide. The other is a four sided structure with 28 foot <br />average height walls, 48.5 feet long and 15.5 feet wide. The four sided structure has a metal <br />roof. <br />Rock Bins <br />Concrete bins located at the B- Bench. The concrete base is 20 feet by 30 feet. The 8 foot <br />high walls are 40 -feet long <br />Retaining Wall <br />Concrete retaining wall located at the B- Bench. The 8 -foot high retaining wall is <br />approximately 50 -feet long. <br />Hubbard Creek Shaft <br />See Map 39 for the location of the ventilation shaft that was constructed during 2007 and <br />2008. It is lined with steel and has a finished diameter of 10.5 feet. The steel liner was <br />cemented in place. Prior to drilling, the perimeter of the shaft was grouted to minimize water <br />infiltration. Grouting was extensive in the collar area and was reduced when the shaft <br />alignment encountered solid rock. The shaft was blind bored the entire depth of <br />• approximately 500 feet. The cuttings removed from the shaft are considered underground <br />development waste and were therefore hauled to one of the approved gob disposal areas. <br />Terror Creek Shaft <br />See Map 42 for the location of the ventilation shaft that is to be constructed during 2010 and <br />2011. The drill site will be from an existing pad that was used to drill monitoring well TC -03- <br />03. The drill site will be upgraded with gravel surfacing. The cut slope of the drill site will be <br />retained with 4,800 face square feet of soil nail retaining wall. The shaft will be raise bored <br />its entire depth of approximately 550 feet. The perimeter of the shaft will be grouted to <br />minimize water infiltration. Grouting will be extensive in the water bearing zones. The <br />cuttings from the raise bore will be conveyed to the outside and placed in the coal mine waste <br />disposal area. The shaft is to be lined with concrete and have a finished diameter of 18.5 <br />feet. A ventilation fan is not required for the shaft since pressure from the mine ventilation <br />system will force air out the shaft. The shaft will be equipped with an escape hoist and <br />nitrogen generator. The electrical powered compressors needed to run the nitrogen <br />generator will be fed by an underground power cable. BRL will need frequent access to the <br />site to test the escape hoist. <br />Emergency Escape System <br />During 2009 the Operator installed an emergency escape system over the Hubbard Creek <br />Shaft. The hoist is 20 -feet long, 8 -feet wide and 9 -feet tall. The hoist foundation consists <br />of six 5.5'X 5.5' 16" thick spread footings with 4 -foot tall 18 -inch diameter piers. The <br />head frame has a 20 -foot square base, is 3 -feet by 12 -feet at the top and is 27 -feet tall. <br />'The head frame will be bolted to the existing shaft collar. A similar emergency escape <br />hoist will be installed over the Terror Creek Shaft. <br />U <br />TR -67 2.05-16- 07/10 <br />f�PP�2ovED <br />y /2 0l /v <br />