2007-10-26_REVISION - M1980110

• Permit No: M1980110
• IBM Index Class Name: Revision
• Doc Date: 10/26/2007
• Doc Name: Amend Appl- Updated Info.
• From: Civil Resources
• To: DRMS
• Type & Sequence: AM5
• Media Type: D
• Archive: No

EXHIBIT ~ -MINING PLAN
This information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.4 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
(aJ Description of the method(s) of mining to be employed in each stage of the
operation as related to any surface disturbance on affected lands;
The proposed permit area includes a significant deposit of sand and gravel located in
the alluvium of the Cache La Poudre River in Weld County. The site is located south
of Weld County Road 64.75 and west of Weld County Road 23.75. 1t encompasses
two parcels totaling approximately 118 acres.
Site Preparation:
Initial disturbance of the property will include: clearing the site of existing structures
(with exception of the structures to remain), constructing the slurry wall, dewatering the
site, stripping the topsoil and overburden material and establishing the processing
area.
Mining:
After the slurry wall installation, dewatering trenches will be excavated down to
bedrock to dewater the portion of the site located within the slurry wall. Groundwater
collected in the dewatering trench will be pumped into a settling pond and ultimately
discharged to an unnamed drainage located on the south end of the property that
drains to the Cache La Poudre River. Once water levels are controlled through the
dewatering system, scrapers will strip the topsoil and overburden material from a given
phase and stockpile them separately for use during site reclamation. Any excess
material not needed for reclamation maybe sold or hauled off-site during the life of the
mine.
The sand and gravel material will be excavated down to bedrock. Each phase will be
dry-mined using scrapers, bulldozers, front-end loaders, excavators, or similar
equipment. The mining on this site will progress in three phases, ranging in size from
17-30 acres and proceeding from south to the north.
The operator will develop and comply with a Stormwater Management Plan and Spill,
Prevention, Control and Countermeasures Plan. The operator will notify the Division
of Mine Safety and Reclamation in the event of a reportable spill.
Processing:
All material mined under this proposed application will be transported by conveyor or
haul truck to the processing area.
Import Material:
Hall-Irwin may import material from and export material to other sites. The applicant is
aware that in accordance with Rule 3.1.5(9) of the Construction Material Rules and
Hall-Irwin Corporation -Long Resource - MLRB 112 Permit Application
Exhibit D -1