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d = 1.3 ft <br />Flow Depth = 1.3 ft <br />Freeboard = 1.7 ft <br />Ditch Depth = 3.0 ft <br />Q = AV <br />V = Q/A = 4.4/Zd= <br />= 4.4/(1)(1.3) <br />= 2.6 fps <br />No further sediment con Vol is proposed for this area other than controlling the amount of overland flow via the <br />diversion ditch. Based upon the track alignment approximately 500 CY' were excavated during the cut and fill <br />process. When the railroad track is reclaimed this material were returned to back fill the cut area. During the <br />period of usage the cut and fill slopes were seeded with the Pastureland seed mixture to stabilize the slopes as <br />needed. The fill material was compacted per the requirements of the UP. <br />After the cut and fill work was completed, approximately 200 CY of pit run gravel was hauled in and used for the <br />bed material. The tie and rails were laid and approximately 200 CY of ballast was placed around the ties. A <br />deadman or berm may be constructed at the end of the extension. Runoff from the site was directed to a silt fence, <br />the area was revegetated and a ditch cut around the topsoil stockpile to direct any runoff' from it into the silt fence. <br />When the rairoad is no longer needed the original track and extension will be removed and the area reclaimed. <br />Specifically for the extension the ties and rail will be removed and then the fill material will be used to backfill the <br />cut area. Also, the combined 400 CY of the ballast and pit run gravel will be used in the backfilling process. The <br />following two paragraphs apply to the extension of the raiUoad behind Pinnacle Peak. <br />Once the backfilling is completed, the entire disturbed area will be smooth-graded to blend the area in with the <br />surrounding topography. The area will be topsoiled, with the topsoil replaced to a depth of approximately 2 i <br />inches. Once this is done the area will be seeded with the rangeland seed mixture. Contour <br />furrows will be inscribed in the seeded area to minimize erosion. <br />Concurrently with the above, the diversion ditch will be reclaimed by blading the soil back into the ditch. Adequate <br />volunteer vegetation should be available, thus the small strip associated with the ditch will not require seeding. <br />In order to allow for car top sampling of loaded railroad cars, a sampling tower and truck parking area was <br />conswcted on the northeastern end of the train tunnel. The construction occurred in a previously disturbed area, <br />and within an existing small area exemption site. The location of the tower and parking area is shown on Permit <br />Renewal Map 5, Mine Plan, Roads, Power Lines and Facilities. <br />Access into the sampling tower will be via the rairoad tracks. Vehicles will either drive through the tunnel, or <br />from the intersection of the office access road and raiUoad tracks, into the site. They will leave via the same routes. <br />It is anticipated that the majority of the access will be through the tunnel, and the other route used only on an <br />emergency basis. <br />The sampling tower is approximately 23 feet in height, and approximately 5' X 7'. A sampling platform will <br />extend from the tower over the car top. A sample splitter was installed and five drums will be placed on a platform <br />underneath the splitter. Five tubes connect the splitter and drums. The platform on which the drums sit is elevated <br />off the ground so that the drums can be transferred easily into the back of a pick up truck. It is unlikely that any <br />coal will be spilled during the sampling process, but if it does it will be picked up and removed from the area. <br /> <br />~~~'~~~~''~ APR 2 4 2000 <br />Permit Renewal No. 3 2.05-37 12/10/98 <br />