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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 />Section 3, Exploration: <br />Please note that exploration within the permit area is considered mining activities. There is not enough detail to <br />accurately project total disturbance and a reclamation liability. There are references vOthin the reclamation plan <br />of such disturbances. Please outline in the mine plan how many drill holes are proposed and their typical <br />characteristics. Haw many and locations of all mine features that will be disturbed in the exploration project? <br />What will the extent of those disturbances be? Please clarify any discrepancies between the mining and <br />reclamation plans. <br />Drilling <br />As shown on Map C-3 Monogram Permit Topographic Base, the northern part of the area which <br />includes the Office, Ore Bin and Monogram Knob is on a lower bench than the south half of the <br />permit area. The topographic benches are separated by very steep slopes and cliffs which have <br />had several horizontal southwest trending adits driven into them. Mining activities have <br />occurred on both benches, and adits from the lower bench (north) may have accessed ore beneath <br />the upper (south) bench. Map C-6 is a geologic map on which these steep slopes and cliffs are <br />shown as faults and the benches as fault blocks. These probable fault-block features are present <br />and parallel to the Paradox Valley on this part of the Monogram/Davis Mesa with a probable <br />origin related to the dissolution of salts beneath the anticline that preceded the Paradox Valley. <br />As shown on the photographic base of Map C-4, many old drill trails are present and frequented <br />by recreational four-wheelers and ATVs. Nuvemco plans to drill exploratory holes along many <br />of the roads and two tracks to evaluate geology and uranium-vanadium mining potential across <br />the permit area. Initial drilling will probably be on 100 foot centers. Based upon results of <br />geophysical logging, closer spaced holes may be drilled in some areas. Although the potential <br />exists to drill 300 exploration boreholes, reclamation will be concurrent with drilling and no <br />more than 50 holes will be drilled in any phase prior to reclamation. Drilling should be a one <br />time event - drive rig along existing road/trail/clearing - drill hole - pull rig off (generally <br />forward 50 to 100 ft) - pull up logging truck - geophysically log hole - logging truck follows rig <br />- pull up with pickup and crew to P&A hole and reclaim site - move to next site. <br />Drilling will be done using a self-leveling, 10-wheel truck mounted air rotary rig which has the <br />capability of driving to each borehole location with minimal disturbance. Drill holes will be 6 <br />inches in diameter, an estimated 200 to 400 feet deep, and plugged and abandoned in accordance <br />with all regulations. No new roads will be constructed and the maximum area disturbed will be <br />less than 20 ft x 30 ft per hole (area where truck is parked and crew is working) resulting in a <br />potential temporary and minor disturbance of 50 x 600 sq ft = 30,000 sq ft. Thus, with respect to <br />drilling, no more than 2/3 acre will be disturbed at any time, but a total of up to 180,000 sq ft or <br />about 4.1 acres could be disturbed. Many drill sites will be directly on bedrock with no potential <br />re-vegetation, but if soil exists, it will be reseeded and monitored to confirm successful re- <br />growth. Reclamation on roads/trails will be limited to reduce road to pre-e):fisting width and <br />erosion control. <br />Extensive and continuous truck and equipment traffic will be limited to the ore hauling road to <br />the Monogram Knob and on the Montrose County roads. All of this drilling will be designed to <br />evaluate ore potential and existing mine workings which are beneath this area and could <br />potentially be accessed from the adits which may exist or be constructed to the north.
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