2018-10-02_PERMIT FILE - M2018037

• Permit No: M2018037
• IBM Index Class Name: PERMIT FILE
• Doc Date: 10/2/2018
• Doc Name: Adequacy Review
• From: DRMS
• To: Civil Resources
• Email Name: ECS
• Media Type: D
• Archive: No

Civil Resources LLC
October 2, 2018
Page 2 of 3
associated with the property. Please demonstrate that the existing water rights for this property would be approved
for use in this manner. Also please include available information on the existing well located in the far SW corner
of the site(near MW5) and include it on the existing conditions map(sheet 2)provided.
EXHIBIT E-Reclamation Plan (Rule 6.4.5):
Seeding-specify types, mixtures,quantities,and expected time(s) of seeding and planting.The reclamation
seed mix and plans for revegetation have not been provided. Please address.
Please remove the reference to Bestway Concrete in the last sentence of the weed control plan.
The post mining land use for the majority of this permit is developed water storage(lined reservoirs). Because the
proposed reservoirs are all or partly within the Platte River floodway,the permittee will be required to provide an
engineered design for spillway(inlet/outlet)structures to be incorporated into the reclamation plan to protect the
integrity of the reservoirs during flood events. The flood control structures will also need to be shown on the
Reclamation Plan Map.
EXHIBIT G-Water Information(Rule 6.4.7):
Please commit to providing DRMS with at least 5 quarters(15 months)of groundwater level data from the 5
existing monitoring wells to determine baseline maximum and minimum pre-mining water table elevations before
initiating work on-site that will impact groundwater levels in the area(installation of slurry walls,dewatering,etc).
This baseline data will evaluated in the event that groundwater level mitigation is required.
The groundwater monitoring and mitigation plan as submitted states that if trigger levels within the existing wells
are exceeded(excess of 2ft deviation from historic background levels),or if a complaint of off-site impact is
received,the permittee will take action and notify DRMS within 30 days.
In the event that trigger levels are exceeded,or complaints of off-site groundwater impacts are received,please
commit to notifying DRMS within 5 working days. The provided notice shall include, at a minimum, a description
of the issue observed or reported(excessive mounding or shadowing, off site impact, etc), additional data to be
gathered by the permittee to characterize the issue if needed, and possible corrective actions that may be
implemented to resolve the issue if deemed necessary.
EXHIBIT L-Reclamation Costs (Rule 6.4.12):
All information necessary to calculate the costs of reclamation must be submitted and broken down into the various
major phases of reclamation. You must provide sufficient information to calculate the cost of reclamation that
would be incurred by the state.
DRMS will further evaluate the provided reclamation costs when all other adequacy issues have been resolved. At
this time it appears that,at a minimum,additional information will be required regarding costs to backfill mined
slopes from 0.5H:1 V within all excavated areas,backfill and fully reclaim the sediment pond and clean water ponds,
install engineered inlet/outlet structures for all remaining open water reservoirs,and provide documentation to
substantiate unit costs for slurry wall installation.
EXHIBIT S-Permanent Man-Made Structures(Rule 6.4.19):
Please note that roadways and above-ground or underground utilities(if present)within 200 feet of the proposed
affected area are considered permanent man-made structures. In accordance with Rule 6.4.19,when mining
operations will adversely affect the stability of any significant,valuable and permanent man-made structure located
within 200 feet of the affected area,the applicant may either:
(a) Provide a notarized agreement between the applicant and the person(s)having an interest in the structure,