Laserfiche WebLink
Tipple No. 2 Loadout Tunnel -The Tipple Loadout Tunnel SAE consists of small disturbed area surrounding the <br />tunnel on the east side as identified on Pemrit Renewal Map 5 (Roads, Powerlines and Facilities). The surrounding azea <br />is well-vegetated and rock/gravel filter dams have been installed in the ditches along the railroad track. This SAE was <br />approved by the CMLRD on June 23, 1988 with MR 88-27. Runoff from from a 10-year, 24-hour event for this 0.10 <br />acre exemption azea would be negligible. <br />Pond B Access Pad -This SAE covers about 0.3 acres adjacent to Pond B. The area is gently sloping, with heavy <br />vegetative weer on adjacent areas bordering Foidel Creek, acting as a filter to prevent sediment contributions to the <br />stream. CYCC wnstructed a bean and rock filter to further wntrol and treat the anticipated 0.01 acre-feet of runoff, <br />generated by the 10-yeaz, 24-hour event. <br />Pond D East Area -The Pond D East Area SAE covers 0.7 acres adjacent to the emergency spillway, overland <br />conveyor, and haulroad. Runoff from this azea flows along the haulroad and wllects between the haulroad and the <br />Pond D embartlartent, immediately to the east of the culvert, which wnveys Pond D discharge to Foidel Creek. The <br />azea is vegetated, and a sump and rock filter treat the anticipated 0.04 acre -feet of runoff from the 10-yeaz, 24-hour <br />design storm event. <br />Pond D West Area -This SAE covers 0.7 acres between the haulroad and pond embankment dischazge point, along <br />with a portion of the overland belt. CYCC constmcted a rock filter to treat any of the anticipated 0.04 acre-feet, 10- <br />yeaz, 24-hour runoff from the area. <br />Pond F and Wastewater Treatment Facility -The Pond F1Wastewater Treatment Facility SAE rovers approxitately <br />5 acres and is located southwest and northwest of Pond F. The SAE area consists of a 0.5 acre paved pazking lot and <br />slope which drains down to the west embartlanent of Pond F, the outslopes and tops of the ponds of the wastewater <br />treatment system, and the building and roads associated with the treatment facility. The building pads and roads are <br />graveled, minimizing the potential for sediment loss and transport from the area. Any drainage from this area will flow <br />along the north side of Pond F and light-use road railroad embattkntent. The azea is well vegetated and arock-check <br />dam will filter any surface runoff prior to dischazge. <br />Overland Belt West -This SAE rovers approximately 0.5 acres between the haulroad embanlanent and raikoad tracks <br />west of the Hauhoad C rail crossing. Runoff from this relatively flat azea would be very limited, with estimated runoff <br />for the 10-yeaz, 24-hour event of 0.03 acre-feet. Any limited drainage flows would be treated by a rock filter. <br />Haulroad C Topsoil Pile -The Haulroad C Topsoil Stockpile SAE covers approximately 0.3 acres between the <br />haulroad and Foidel Creek, and is located across from Pond C. Runoff from the azea is approximately 0.01 acre-feet for <br />the 10-yeaz, 24-hour event, with runoff flows to be controlled and filtered by a berm, rock filters, and the established <br />vegetative cover. <br />Scoria Storage Area tilt 05-45) - A portion of the former Haul Road A northwest of Pond C is used as a storage area <br />for the scoria and gravel materials used in maintaining mine roads. The Scoria Storage area rovers approximately 0.87 <br />acres. The surface of this azea is graded so that most minor drainage is naturally wntained. Runoff from any <br />significant storm event drains to the south and east, where an existing berm routes runoff flows to a sump and wllection <br />ditch designed to treat the runoff from a 10-yeaz, 24-hour storm event. From this ASC, the ditch directs drainage flows <br />through awell-established vegetative filter to Foidel Creek. The SAE demonstration for the Scoria Storage Area is <br />provided in Exhibit 8U. <br />Storage and Training Area (Trudv's Corner - TR OS-451- An azea located east of Pinnacle Peak and northeast of <br />Pond A previously disturbed and used in conjunction with historic surface mining activities (Trudy's Comer), is <br />currently utilized as a materials storage and training azea. This azea enwmpasses approximately 0.78 acres. Drainage <br />from this area flows to the west to an existing drainage ditch along the Pond A awess road, then approximately 0.15 <br />miles through the vegetated ditch and awell-established vegetative filter to Pond A. An SAE demonstration <br />documenting the effectiveness of this drainage wnfiguration for the Storage and Training Area is provided in Exhibit <br />SU. <br />MROS-194 2.05-81 07/2/05 <br />