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slopes in rock are excavated at a 0.25H: IV. Rock bolts, wire mesh and shotcrete will be used as <br />necessary to stabilize the cut slope. A soil nail wall will be constructed to increase the size of the <br />portal bench. Three declined slope entries were driven in an easterly direction approximately 425 <br />feet to the Blue Seam. Blue Seam was approved by technical revision number 58. <br />Structures to be installed at the Bates Portal include a ventilation fan, conveyer drive building, <br />transfer building, 72 inch wide beltlines and retaining walls. A 240 foot long (100 feet inby and <br />270 feet outby) 72 -inch portal beltline will exit the portal and terminate at the transfer tower. A <br />second 600 foot long 72 inch wide beltline will convey coal in a westerly direction from the <br />transfer tower to the existing breaker building. Three retaining walls along the north side of the <br />access road average about eight feet high and are a total of 285 feet long A detailed listing of the <br />size of the foundations of all buildings and proposed construction type is included in Exhibit 28- <br />Bond Calculations. <br />Four types of material were generated from the Bates Portal development. They are topsoil, <br />subsoil, common subsoil and bedrock subsoil. Topsoil was removed and stored in the topsoil <br />storage pile #2. Subsoil was stored in subsoil pile #1. Bedrock and common subsoil were be <br />stored in subsoil piles #2 and #3 respectively. <br />Slope development will generate coal mine waste. A temporary conveyor will be installed to <br />convey the coal mine waste to the east side of the clean coal stockpile. The coal mine waste will <br />then be hauled and placed on the conveyor that transports material to the development waste <br />disposal area. <br />Maps 15 and 16 show disturbed areas on the site. The disturbance area boundary has been <br />established to include a buffer should additional disturbance activities become necessary. The <br />surface disturbance boundary shown on maps 15 & 16 will be the boundary marked in the field <br />in accordance with Rule 4.02. These markers will consist of roof bolts or rebar covered with <br />white PVC pipe. As portions of the site are reclaimed, boundary markers will be moved to the <br />reclamation limits of the disturbed areas. <br />Late in 2011, drill hole NE -16 -11 was installed west of pond 7. The purpose of the hole was <br />hydrologic testing. The hole was located in a previously disturbed area. No mud pit was <br />required. <br />In 2012 three exploration holes will be drilled south and southeast of the mine facilities as shown <br />on Map 20 Sheet 1. Two of the holes (NE -17 -12 &NE- 18 -12) are located on DOW land. <br />Exploration hole NE -01 -12 is located on the Applicants property. <br />Two facilities, Apache Canyon Air Shafts #1 and #2 were reclaimed and Phase III released. <br />These facilities will be returned to production use for mine ventilation. The <br />MR -107 Page 2.05 -5e Revised 01/25/12 <br />