PERMFILE49711

• Permit No: M2005066
• IBM Index Class Name: Permit File
• Doc Date: 4/6/2006
• Doc Name: Adequacy Response
• From: Banks and Gesso LLC
• To: DMG
• Media Type: D
• Archive: No

Ms. Erica Crosby
Division of Minerals and Geology
April 5, 2006
Page 4 of 21
that phase as possible -likely on the west side of Phase 2. Phase 2 and 3
overburden may be moved directly to the previous phase for concurrent reclamation,
or will be stockpiled around the perimeter of that phase to minimize pile movement
by locating the material close to the area in which it will be used for reclamation
(pond slopes). See Exhibit C-3 for approximate locations of overburden stockpiles.
The applicant commits to minimizing movement of topsoil stockpiles and re-
spreading topsoil as soon as final grade is achieved.
10. The applicant proposes a sediment pond to be constructed in the processing area.
Please describe in further detail the construction, dimensions, use and management
of this pond. Please explain how water will be routed to the pond, and any
discharges features to be installed. In addition, explain how the pond will be
reclaimed.
As stated in response to question 8 above, The sediment pond area shown on
Exhibit C-3 will be constructed to contain sediment-laden water from the sand
washing plant and to re-use clarified water in the wash plant. There will typically be
a series of 3 to 6 pond cells, each approximately 4 to 6 feet deep on average and
approximately 2,000 square feet in area. The ponds will be lined, if necessary, with
clay or other impermeable material. Additional temporary sedimentation ponds of
approximately the same dimensions may be constructed within the limits of Phase 3
if additional space is necessary. The final size, number and location of these
temporary ponds will depend on conditions found to exist during actual mining.
Water from the wash plant will be routed to the ponds via pipe or ditch, and any
pond overflow (from a storm event, for example) will be directed to one of the
excavated areas via site grading.
Ponds will either become mined areas, or will be reclaimed by removing any
impermeable lining and backfilling to natural grade with excess overburden, and
topsoiled and seeded as described in Exhibit F to the original application.
11. Please located and describe in further detail the dewatering trenches that will be
constructed to facilitate dewatering of the site. Provide the sizing of the trenches
and the point of discharge.
The applicant has committed to sealing Phase 2 and 3 mining areas prior to mining
below the water table; therefore dewatering trenches will not be necessary around
the perimeter of those pits. In Phase 1, temporary dewatering trenches of
approximately 3 feet in width and about 3 feet below the active mining floor may be
constructed as necessary to dewater the active working area. Dewatering trenches
will be constructed to move water away from the working face to a temporary sump
constructed within the limit of the pit where it will be collected and used to supply the
wash plant and/or discharged (pending receipt of a State discharge permit). Both
the temporary dewatering trenches and temporary sump areas will be mined out as
the pit face advances and/or the pit is excavated down through the sand and gravel
zone to bedrock. Trench and sump locations are therefore subject to change as
mining progresses. All temporary trenches and sump areas will be backfilled and
reclaimed as shown on Exhibit F.