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2009-03-12_REVISION - M1978222UG
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2009-03-12_REVISION - M1978222UG
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Last modified
6/15/2021 5:55:47 PM
Creation date
3/23/2009 8:27:33 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1978222UG
IBM Index Class Name
REVISION
Doc Date
3/12/2009
Doc Name
Response to preliminary adequacy review
From
O&G Environmental Consulting, LLC
To
DRMS
Type & Sequence
CN1
Email Name
GRM
Media Type
D
Archive
No
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Nuvemco, LLC's Monogram Mine M-1978-222UG <br />Response to Preliminary Adequacy Review <br />March 10, 2009 <br />Based upon the success of drilling and mining the Monogram Knob, Nuvemco may enter into a <br />phase of exploration which could include re-opening existing or previously reclaimed adits, <br />portals or shafts. Based upon the results of these exploration/mining development efforts, the <br />Monogram Mine permit may have technical revisions to include any additional surface or <br />underground mining plans. <br />Nuvemco will open no more than five portals within the Monogram Permit Application Area. <br />All portal openings are speculative and will be based upon potential discoveries made during <br />drilling and underground exploration activities. Surface disturbances will be no more than 50 ft <br />x 100 ft for each portal re-opened. Maximum disturbance could be 5 x 5000 sq ft= 25,000 sq ft. <br />Section 4, Surface Facilities: <br />As noted above San Miguel Power Lines are referenced here. It is stated that the power lines are parallel to and <br />south of the permit boundary as well as over 200 feet. This is conflict with statements in the Introduction. <br />Please Clarify. <br />As described in the Permit Exhibit Review, the San Miguel Power Lines have been added to the <br />maps and a new Map A-2, Monogram Mesa Power Lines has been constructed including the <br />Nuvemco claims and Monogram Permit Boundary. As shown on Map A-2, the terminus of one <br />line is near the southeast corner of the Great Hesper claim block, near, but not on the Monogram <br />Permit. As stated in section D-4 Surface Facilities, a power supply may be brought into the <br />permit to the office. This decision will be dependent upon mining success and potential <br />development. Should Nuvemco expand operations into underground mining, a power supply <br />would be needed, and a technical revision to this permit filed with complete construction and <br />reclamation details. <br />The mine plan and map note a bernj around the office 1 ore bin area. However no other details are piovided in <br />regard to storm water structures. Will there be structures such as ditches and retention ponds constructed? If so <br />they must be demonstrated to meet jute 7.3.1(3). <br />The detail of the ore bin structure appears to be wcll designed. However the stormwater retention from. this <br />structure appears to be less thought out. Please provide a detail of how the 55 gallon barrel will be incorporated <br />into the retention of stonmvater that falls on the structure. It must be demonstrated that it can handle the stone <br />event as outlined in Rule 7.3.1(3). While the covering of the ore pile with tarps is understood to be a good <br />theoretical practice the execution of such a plan 100% of the time is suspect. All stormwater calculations and <br />structures will be required to meet the retention of 100 % of the uncovered area for the event outlined in Rule <br />7.3.1(3). <br />In accordance with the above rule 7.3.1(3) and Rule 6.4.20 (10) the berms, retention and <br />detention ponds shown on Map C-2(b) and Photograph 9and have been designed by a <br />professional engineer to meet the requirements of these rules. Note that this staging area is a <br />reclaimed mining area with low-grade ore piles at several locations around and within it. This is <br />the reason it is relatively flat. An additional surface radiometric survey was conducted to <br />determine background radiation within the area and is included in Appendix A as Map 3. <br />Several exploration bore holes will be drilled over the area prior to final ore bin location to <br />confirm subsurface stability and avoid potential mineralization that Nuvemco may wish to mine <br />at a future date. Thus the locations are tentative at this time pending further investigation. <br />Descriptions of the engineered surface water control features follows. <br />6
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