2017-08-01_REVISION - M2009074 ‎(7)‎

• Permit No: M2009074
• IBM Index Class Name: REVISION
• Doc Date: 8/1/2017
• Doc Name: Application
• From: DRMS
• To: Colorado Backhoe Service
• Type & Sequence: CN1
• Violation No.: MV-2017-009
• Email Name: ERR
• Email Name: WHE
• Media Type: D
• Archive: No

EXHIBIT G
WATER INFORMATION
There are no water structures on the site . The closest
water body is the St . Charles River which at its closest point is
approximately 1000 feet west of the site . The river is
approximately 30 feet lower than the proposed mine floor . The
two small wet area on the old mine area are created by stormwater
that has accumulated in low spots since early mining days .
Colorado Backhoe Service contacted the US Army Corps of Engineers
to see if they could be filled in. The Corps indicated they were
non jurisdiction waters and they could be filled in. A copy of
the Corps Letter is no the next page .
Review of well data on the surrounding areas indicate the
closest water well is located approximately 0 . 44 mile northwest
of the mine and the water table in this well 32 feet ± below the
ground surface . Wells on the upper bench average 67 feet deep
making the water table approximately 55 feet below the floor of
the mine . Ground water will not be encountered on this site and
we will not affect the hydrologic balance of surface or
subsurface water in the area . Domestic water for the community
is supplied by St . Charles Mesa Water District .
We do not expect to encounter ground water on this site
however if at anytime groundwater is encountered a 2-foot cover
will be placed over the exposed water and the mine floor
elevations will be adjusted to maintain that depth to
groundwater .
The operator' s intent is to minimize the disturbance to the
prevailing hydrologic balance of the affected land and of the
surrounding area and to the quality and quantity of the surface
and ground water system, both during and after mining and
reclamation. We believe we will be in compliance with all state
laws, federal laws, and regulations governing water and water
rights as the property develops .
We estimate the current water uses at the mine, including,
dust control will require 3 . 00 ac-ft per year . This water is
purchased from the St . Charles Mesa Water District . No water will
be used for reclamation, nor will the revegetated areas be
irrigated.
The pit is a dry mine so will not be dewatered and will be
graded such that all surface water runoff is retained on the site
for less then 72 hours and all off site storm runoff will be
diverted around the permit area .
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