2021-12-29_PERMIT FILE - M2021009 (9)

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90. On page 1 of this plan, the application states "a more detailed and accurate blast plan will be prepared by the third-party blasting contractor and will be submitted to the DRMS following the start of operations and prior to beginning of active mining"and "a third- party, potentially the same contractor as the blasting third-party, monitoring plan will be prepared and also submitted to the DRMS on the same schedule as the blast plan". Please commit to submitting any changes to the blasting plan and/or monitoring plan from what is proposed in this application in the form of a Technical Revision. The applicant commits to submitting any changes to the blasting plan and/or monitoring plan from what is proposed herein via a Technical Revision prior to the start of blasting. 91. On page 2 of this plan, the application states "a copy of the Pre-Blast Survey notification is included at the end of Appendix 3". However, the Division was unable to find this document in the application. Please provide a copy of the document referenced. See the Pre-Blast Survey Notification now included in the Appendix 3 Blast Plan for the Young Ranch Resource Quarry. The notification was simply omitted during the initial submission to the Division. 92. On page 17 of this plan, the application states "blast guards will be posted at all entrances to the permit boundary to make sure the access corridors through the active mining area are secure during the blast process". Please clarify whether the Central City Parkway will require temporary closure during blasting. If so, what is the average amount of time the parkway will be closed for blasting? How does the operation intend to stop/control traffic on the parkway during blasting? Will signs and/or barricades be used? How far back from the blasting area will traffic need to be restricted on the parkway during blasting? Lastly, please specify the Central City person or department that will be notified regarding any parkway closures required for the operation. In the event that local road closures are required, the Young Ranch Resource will work directly with Central City regarding closures of their road. Prior to the start of blasting, the Young Ranch Resource will commit to submitting proof of authorization from Central City that details: the average amount of closure time required; traffic control plans; sign and barricade placements; and traffic restriction areas; and the responsible department of Central City government. 93. Please describe how the operation will work to prevent flyrock from leaving the site, particularly during the initial mining of each phase when blasting will occur at the highest elevation. All blasting will occur at the direction and supervision of a licensed blasting contractor capable of preventing flyrock from impacting adjacent public or private use areas. Precautions will be taken to minimize flyrock and will be a main feature of creating an exemplary blast design. Additional precautions inherent to the mine design include the nature of 25-foot-thick blast benches meant to minimize adverse blast impact (e.g. shallow blasts cause more flyrock). 94. On page 24 of this plan, the application lists several structures located within 200 feet of the permit area which are said to be "identified in Exhibit S"and "shown on map C-1". However, the Division was unable to locate all of these structures in Exhibit S and on Figure C-1. For example, the structure list provided in Exhibit S does not mention the Young Ranch LLC cabins or the overhead communication lines along the Central City December 2021 29 M Lewicki&Associates