2011-08-26_REVISION - M1981185

• Permit No: M1981185
• IBM Index Class Name: REVISION
• Doc Date: 8/26/2011
• Doc Name: Fifth adequacy letter ‎(CN-01)‎
• From: DRMS
• To: R Squared Incorporated
• Type & Sequence: CN1
• Email Name: WHE
• Media Type: D
• Archive: No

DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
To: Wally Erickson
From: Tim Cazier, P.E.
Date: August 22, 2011
Mined Land Reclamation
MEMORANDUM
STATE OF COLORADO
Re: May Day & Idaho Mine Complex Permit No. M- 1981 - 185 /CN -01, Comments
to Selected Work Plans from the August 2011 Submittal, Exhibit D
COLORADO
D I V I S I O N O F
RECLAMATION
MINING
— &—
SAFETY
John W. Hickenlooper
Governor
Mike King
Executive Director
Loretta Pineda
Director
The Division of Reclamation, Mining and Safety (DRMS) engineering staff has reviewed the
following selected work plans in Exhibit D of the August 2011 submittal:
a) Attachment D -2, Portal Collapse Repair Work Plan May Day No. 1,
b) Attachment D -3, Little Deadwood Gulch May Day No. 2 Drainage Control,
c) Attachment D -4, Chief Drainage and Portal Work Plan and Lamb Affected Area Little
Deadwood Gulch,
d) Attachment D -6, Augmentation Pond Work Plan.
The following comments are posed to ensure adequate engineering analyses and design practices
are implemented in accordance with Rules 6.3.3(1), 6.4.21(7) & (10), and 7.3.1(3).
Attachment D -2, Portal Collapse Repair Work Plan May Day No. 1
1. Page 4, second to last paragraph, the applicant states Wildcat will obtain approval from
DRMS prior to commencing portal repair activities. The applicant should be aware that
DRMS approval can only be obtained through the Technical Revision process. The
submittal will require the following:
a. The technical memorandum summarizing the information, data, and design
resulting from the work plan outlined in the bulleted list above the referenced
paragraph on page 4.
b. There is no discussion in Attachment D -2 related to portal repair drawings and
specifications. The applicant needs to commit to providing DRMS with repair
drawings and specifications.
2. Page 8, Reporting. The second paragraph indicates "as- built" drawings will be prepared
in the third quarter of 2011. DRMS recommends this statement be revised such that the
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