2019-01-04_REVISION - M1994117 (3)

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COLORADO MILLING COMPANY, LLC P.O. Box 1523 Longmont, Colorado 80502 /! pwsr 001 Colorado Division of Reclamation, Mining and Safety Janu Amy Eschberger Environmental Protection Specialist 1313 Sherman Street—Room 215 RECEIVED Denver, Colorado 80203 JAN U RE: Gold Hill Mill, Permit No. M-1994-117,Amendment Application DIVISION OF RECLAMATION, (Revision No. AM-01), Adequacy Review No. 2 MINING AND SAFETY ATTN: Amy Eschberger This is the Colorado Milling Company, LLC's Response Letter to the Amy Eschberger's December 21,2018 Adequacy Review No. 2 of the Application for an Amendment to the Gold Hill Mill Limited Impact 110 (2) Permit No. M-1994-117, to formally add the previously permitted Left Hand Creek Pump Station, Gold Hill Mill Pipeline, and the Times Mine adit portal to the affected land boundary of the Gold Hill Mill Permit. These three features are collectively referred to as the Gold Hill Mill Waterline in this Response Letter. In order to ensure that the responses to the Division of Reclamation, Mining and Safety's request for additional information and clarification can be properly reviewed, the responses are set out below each of Amy Eschberger's Adequacy Review comments. Application Form: 1) The revised page 3 of the application form includes the following coordinates for the primary mine entrance location: 40°03' 55.74"N, 105'24' 24.12.1"W. The seconds given for the longitude is not accurate. Based on the coordinates provided on the revised location map,the Division believes the longitude should read: 105'24' 12.1"W. Please correct this error on page 3. CMC Response: This has been corrected. Exhibit B—Site Description (Rule 6.3.2): 2) The operator's response to item no. 9 states the only structures located within 200 feet of the entire affected area are three small wooden frame structures, a single family residence, several sheds, and an unused corral. However, in Exhibit L,the operator states there is a pole-mounted 1