2009-03-17_PERMIT FILE - M2008078 ‎(3)‎

• Permit No: M2008078
• IBM Index Class Name: PERMIT FILE
• Doc Date: 3/17/2009
• Doc Name: Adequacy Review 01 Response with Attachments
• From: J&T Consulting, Inc.
• To: DRMS
• Email Name: MAC
• Media Type: D
• Archive: No

M-2008-078 - GP Ranches, LLC - West Farm Pit - 112 (c) Application Adequacy Review 01 Response
March 17, 2009
-3-
A letter is attached acknowledging that GP Ranches, LLC has an SPCC plan in place and will
implement it prior to the storage of fuel or oil products at the West Farm Pit.
8. Specify whether explosives will be used during mining per Rule 6.4.4(1).
Explosives will not be used during mining.
9. The Mining Plan states that a portion of the mining area lies in the floodplain of the Arkansas
River. There is a possibility that water could enter the pit during a flood event, resulting in
headcutting of the highwall. The Division asks that you consider implementing measures to
prevent waterfront entering the pit during such an event.
The site is located in Prowers County. The Southeast Land and Environment division of
Prowers County is the local floodplain administrator, and works with FEMA to regulate issues
related to land use/development in flood prone areas of the County. GP is required to obtain a
Flood Hazard Development Permit from Prowers County for the gravel pit as part of the
County's Special Use Permitting process prior to any mining or reclamation activities
commencing. GP must demonstrate to the floodplain administrator that the operation will not
adversely affect the floodplain, will not increase the flood risk on adjacent properties, and will
implement appropriate mitigation measures to protect the mine and adjacent lands during
significant flood events in order to receive approval for this permit.
10. The Mining Plan states that 2 phases will be disturbed at any given time. Describe the point of
maximum disturbance for each phase. Please include enough detail so that the Division can
calculate the maximum interior highwall dimensions that will require reduction to a 3:1 slope.
This information is necessary to assist us with our financial warranty calculation.
The maximum disturbed area for each individual phase extends to its boundary shown on the
Exhibit C Pre-Mining/Mining Plan Map. Because reclamation is planned to occur on previous
phases concurrently with the mining of each subsequent phase, the maximum disturbed area at
any given time will be 2 phases. We have provided for financial warranty to be provided for the
liner required to close the mine at any given time in our phased financial warranty calculations.
We did this to ensure that the Division has sufficient warranty posted for any given time during
the life of the mine even though GP will only construct liner located on the perimeter of all
phases. The following table summarizes the average depth of mining in each phase.

Phase Average Mining
Depth ft
1 68
2 68
3 67
4 61
5 68
6 66
7 65
8 68
9 65
10 65
11 68
12 65
V 0 1400 W 122`d Avenue - Suite 120 • Westminster CO 80234 • Ph: 303-457-0735 • Fax: [phone]