2009-05-14_REVISION - M2004009 ‎(4)‎

• Permit No: M2004009
• IBM Index Class Name: REVISION
• Doc Date: 5/14/2009
• Doc Name: Response to Adequacy Review Letter dated May 6, 2009.
• From: WSI
• To: DRMS
• Type & Sequence: TR3
• Email Name: ECS
• Media Type: D
• Archive: No

6.4.5 Exhibit E - Reclamation Plan
Concurrent Backfillinq Adjacent to Oil and Gas Structures
Agreements between ASCI and the owners of oil and gas structures specify that
mining can occur no closer than 75 ft from oil and gas well facilities as a
temporary condition. ASCI will backfill areas adjacent to oil and gas oil and gas
wells as shown on Exhibit C-2, Mine Plan Maps. Backfilling adjacent to oil and
gas structures to a radial distance of 200 ft will occur within two weeks following
excavation near oil and gas structures. The total volume of material needed to
backfill these areas is approximately 100,000-120,000 yd3
Backfillinq Cell 1
As of the date of this submittal, all of the overburden from Cell 1 has been
backfilled into the east half of Cell 1, which accounts for approximately 265,000
yd3 of the 600,000 yd3 required to grade Cell 1 to the configuration shown in
Exhibit F. The remaining 335,000 yd3 will come from approximately 4.5 ft of
sediment from the bottom of the existing pond in Cell 1 (currently dewatered) and
approximately 3 ft of weathered shale at the bottom of the west half Cell 1
(reservoir area).
Backfillinq Cell 2
Aside from an initial stockpile required to open up mine areas to be backfilled,
reclamation of Cell 2 will occur as direct replacement of overburden from the
stripping process. The initial stockpile is expected to be no larger than 150,000
yd .
Backfillinq Cell 3
Backfilling of Cell 3 will begin concurrently with mining and following mining of
Cell 6. Overburden stripped from Cell 6 will be placed directly into Cell 3.
Additional overburden from Cell 4 will be placed directly into Cell 3 prior to mining
Cell 4. Cell 3 will be backfilled to approximate historic grade.
Backfillinq Cell 6
Backfilling of Cell 6 will begin following mining of Cell 5. Overburden from Cell 5
will be placed directly into Cell 6. Additional backfill will be obtained from excess
soil obtained from the reservoir construction project shown on Exhibit C-2, Sheet
1 as "Borrow Cell". Cell 6 will be backfilled to approximate historic grade.
Backfilling of an area shown on Exhibit F- Reclamation Plan, Sheet 2 will be
done during the non-irrigation season (November-March) for the purpose of
construction of a pipe that will route a 3 cfs pending water right from west of Cell
6 to the Plumb and Dailey Ditch.
Design and Construction of 3 cfs Water Right Pipe
The Plumb and Dailey Ditch Company has filed for a 3 cfs flow absolute water
right on water that flows through Cell 6. This section provides a design and
construction specification to route this flow through a pipe. The design criteria for
the pipe includes 1) ability to convey 3 cfs, 2) structural integrity sufficient to