2018-07-25_PERMIT FILE - M2018027

• Permit No: M2018027
• IBM Index Class Name: PERMIT FILE
• Doc Date: 7/25/2018
• Doc Name Note: RE: Preliminary Review of Application Package
• Doc Name: Adequacy Review #1
• From: DRMS
• To: Civil Resources
• Email Name: ECS
• Media Type: D
• Archive: No

Addressee
Date
Pare 3 of
EXHIBIT L- Reclamation Costs(Rule 6.4.12):
The reclamation estimate provided is under review and will be finalized when all other adequacy
issues are resolved.
EXHIBIT M-Other Permits and Licenses(Rule 6.4.13):
Exhibit M states that a Well Permit and S.W.S.P. will not be required,but lists"Dam Safety Letter".
Please confirm/revise where necessary.
EXHIBIT S-Permanent Man-Made Structures(Rule 6.4.19):
The information provided does not distinguish between required notice to property owners within
200' of the proposed operation, and structure owners within 200' that were provided damage waiver
agreements. Please describe how the appropriate notice/waiver information was sent out.
No proof of structure damage waivers sent was provided for Xcel or Century Link.
It is unclear from the information provided to DRMS at this time that CDOT has been properly
noticed,or provided with a damage waiver agreement for structures within 200'
The geotechnical stability assessment provided is internally inconsistent in several areas and
inconsistent with the provided mining and reclamation plans. Inconsistency was noted with respect
to the depth of mining in the two main mined cells, if mining will take place in saturated material,
and maximum mined depth of 10 feet in the"second cell"(SE area?). The provided assessment does
not consider any topsoil or overburden stockpile loading,however the mining plan states that topsoil
and overburden stockpiles will be placed along the perimeter of the site(these stockpiles should be
shown on the mine plan map).
Please revise the geotechnical stability report for internal consistency and rerun the analysis where
needed to demonstrate that no adjacent structures will be impacted from the proposed mining activity.
Additional Information: Any letters from other commenting agencies/entities received by the Division to
date have been included with this correspondence for you to review.
This concludes the Division's preliminary adequacy review of this application. This letter shall not be
construed to mean that there are no other technical deficiencies in your application. Other issues may arise as
additional information is supplied. Please remember that the decision date for this amendment application is
August 30, 2018. As previously mentioned, if you are unable to provide satisfactory responses to any
inadequacies prior to this date, it will be your responsibility to request an extension of time to allow for
continued review of this application. If there are still unresolved issues when the decision date arrives and no
extension has been requested,the application will be denied. If you have any questions,please contact me at
[phone] x8140.
Sincerely,
6�;
4V
Eric Scott—Environmental Protection Specialist
Enclosures: Letter from SEO, US A.C.O.E.