PERMFILE122201

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 5/1/2003
• Section_Exhibit Name: Tab 13 Facilities
• Media Type: D
• Archive: Yes

• Material containing, by volume, less than 25 percent of rock larger than 6 inches in greatest
dimension will be spread by scrapers or dozers in successive uniform layers not exceeding 12
inches in thickness before compaction.
• When the material for an embankment consists of large size rock, broken stone, or fragmented
material that makes placing it in 12 inch layers impossible, the embankment will be
constructed in uniform layers not exceeding in thickness the approximate average size of the
rock used, but the layers will not exceed 36 inches. Rock will be distributed by blading or
dozing in a manner that will ensure proper placement in the embankment, so that voids,
pockets and bridging will be reduced to a minimum. The final layer will meet the requirements
of 4.03.11311d11v1.
• Each layer of the embankment will be completed, leveled and compacted before the
succeeding layer is placed. Successive layers will be compacted evenly by routing dozers,
trucks and scrapers over the entire width of the embankment. This procedure will be
continued until no visible horizontal movement of the embankment material is apparent.
Embankment layers will be compacted to a minimum of 90 percent of Standard Proctor density
or as directed by the engineer to ensure that the embankment is adequate to support the
anticipated volume of traffic and weight and speed of vehicles to be used.
• Material will be placed in an embankment only when its moisture content is within acceptable
levels to achieve design compaction.
• Temporary erosion control measures Iditches, berms, strew dikes, silt fence) will be utilized
during embankment construction to minimize sedimentation and erosion until permanent
control measures can be established. Immediately upon completion, measures will be taken to
stabilize all embankments with vegetation cover or other means as approved by the regulatory
authority to minimize erosion. Where a vegetation cover is used, consideration shall be given
to providing an appropriate growth medium. ~~
Drainage. Each haul road not within areas disturbed by mining and reclamation activities will be
designed, constructed and maintained to have adequate drainage using ditches and culverts to safely
convey the peak runoff from a 10-year, 24-hour precipitation event while maintaining a minimum of 0.5
feet of freeboard to the top of the road embankment Isee Exhibits 13-2 and 13-2A for general locations
and Exhibit 13-10 for typical details of drainage structuresl. Please refer to Attachment 13-6 for ditch
requirements for Haul Road G ditches, especially those ditches which channel Clow around Pond 005.
Table 13.3 summarizes these ditch parameters.
Drainage ditches will be placed at the toe of all cut slopes formed by the construction of haul roads.
• Water will be intercepted before reaching a large fill and drained safely away in accordance with the
17 Revised 9/98