2009-10-29_REVISION - M1987049 ‎(5)‎

• Permit No: M1987049
• IBM Index Class Name: REVISION
• Doc Date: 10/29/2009
• Doc Name: Pre-Hearing List of Witnesses and Exhibits.
• From: DRMS
• To: File
• Type & Sequence: AM2
• Email Name: JLE
• Media Type: D
• Archive: No

McCanne Ditch Mitigation Plan
1. Sources of Water
RMCC and the McCanne Ditch met on August 3, 2009 with their respective
engineers, mining consultants, and legal counsel to discuss potential impacts of
the proposed amended mining plan on the McCanne Ditch and mitigation
alternatives. Based on those discussions, RMCC proposes the following
mitigation plan.
Currently, there are four (4) principal sources of water that supply the
McCanne Ditch in the area affected by RMCC's proposed amended mining plan
including the following:
1. Ground water;
2. Irrigation return flow from Petrocco Farms;
3. North Tower Lake (Carlson); and
4. Third Creek.
Of the four water sources mentioned above, only ground water and surface
irrigation return flows will be affected by the proposed amended mining plan; of
these, the amount of irrigation water available for use by the McCanne Ditch, at
any given time, will vary according Petrocco Farms' irrigation practices and the
continued use of Petrocco's water rights on its property east of Brighton Road.
Both North Tower Lake and Third Creek are outside the amended mining area,
and seepage water and direct flows will continue to be available to the McCanne
Ditch from these sources.
II. Proposed Mitigation Plan
A. Mitigation during Mining
RMCC will relocate the McCanne Ditch as shown on the amended mining
plan. The relocated ditch will be lined with bentonite to minimize leakage.
Pursuant to the Carriage Agreement, dated September 13, 2004, between the
RMCC and the McCanne Ditch and Reservoir Company, the McCanne has the
right to review and comment on RMCC's design plans and specifications for
relocation of the ditch.
During mining and backfilling of the ARA properties, RMCC will pump
ground water from the active pit area directly into the McCanne Ditch as opposed
to the South Platte River. Pumping from the active mining area would include
surface runoff from the Petrocco property in the vicinity of East 144' Ave. The
McCanne Ditch has advised RMCC that it will accept this water as it is pumped
from the mining operation provided that it does not adversely affect the ditch.
RMCC will work with the McCanne Ditch to make sure that the capacity of the
8/26/2009