1991-10-07_PERMIT FILE - M1991123 ‎(5)‎

• Permit No: M1991123
• IBM Index Class Name: Permit File
• Doc Date: 10/7/1991
• Doc Name: REGULAR OPERATION 112 RECLAMATION PERMIT APPLICATION FORM
• Media Type: D
• Archive: No

EXHIBIT D �
MINING PLAN
The Idaho Creek Resource will be used by the owner as a source for
fill material and aggregates. The applicant owns all the property
and holds the mineral rights. The general location of the mining
area is along Idaho Creek west of Interstate 25 and west of Weld
County Road 5 . The total area to be mined is approximately 70
acres.
Before mining occurs we will need to re-route Idaho Creek along the
west and north sides of the property to allow for a maximum amount
of resource to be mined. This will be accomplished using pilings
driven into the ground at the points of diversion (4 total - shown
on Exhibit C) to allow the water to flow along the new channel.
Since this is not considered filling of a wetlands area a 404
permit is not required.
We expect the majority of mining to occur during the fall, winter,
and spring months, although mining will probably continue during
the summer months. The resource will be mined using dry mining
techniques. A dewatering ditch will be constructed around each
phase. Any groundwater intercepted during the mining operation
will be pumped from the ditch and discharged to Idaho Creek.
The processing equipment for the resource will be portable and move
with the mining each year. The equipment will be located on un-
mined ground. The plant site will contain a crusher and screens.
The mining operation will begin at the north end of the property
and proceed in a southerly fashion. The area will be mined in
five(5) to eight ( 8) acre segments. We expect the mining to last
for ten ( 10 ) years.
The material to be mined at the Idaho Creek Resource is sand and
gravel. Information obtained from bore logs drilled on April 1,
1983 indicate a general topsoil depth of six inches. Overburden
varies from 1 foot to 9-1\2 feet in depth. The sand and gravel
resource thickness varies from 7 feet to 20 feet. Groundwater was
encountered at depths of 2-1\2 feet to 4-1\2 feet below the
surface. Underlying the resource is a silts tone/claystone bedrock.
Earth moving will be done using scrapers and front-end loaders.
Overburden and topsoil will be removed and stockpiled separately.
Typical stockpiles will be 10 feet in height, 50 feet wide and
contain approximately 6,500 cubic yards of material.
One lake will be created by the mining operation. This lake will
have a surface area of 59 acres.
D-1
C