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PERMFILE138131
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PERMFILE138131
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Entry Properties
Last modified
8/24/2016 10:38:44 PM
Creation date
11/26/2007 7:04:44 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1991146
IBM Index Class Name
Permit File
Doc Date
1/13/1992
Doc Name
ADEQUACY LETTER ZMK MINING INC ZMK GRAVEL PIT FN M-91-146
From
MLRD
To
MONADNOCK MINERAL SERVICES
Media Type
D
Archive
No
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<br />5. Your mining plan includes changing the course of the Uncompahgre <br />River. Provide evidence that altering the course of the river will not <br />cause off-site damage such as steam bank erosion of properties upstream <br />and downstream from the proposed operation. Your response to this <br />citizen concern was that it will be addressed in your 404 permit <br />application. The Mined Land Reclamation Act CRS 34-32-116(7)(h) also <br />requires that you address this matter in your Reclamation Permit <br />application. Provide maps, data and calculations developed by an <br />engineer or hydrologist versed in stream mechanics that demonstrate <br />that off-site damage will not occur as a result of the proposed channel <br />change. <br />6. When the river is diverted into the Phase I pit area, some storage of <br />water will occur before the normal river flow is resumed. Provide <br />evidence that this will not constitute injury to existing water rights. <br />7. You have stated that the side boundary to the west of the permitted <br />area will be rip-rapped. Provide specifications for the size, type of <br />material and placement of this rip-rap. These specifications should be <br />sufficient to demonstrate that off-site damage from a 100-year, <br />24-hour, storm event will be prevented. <br />8. Your application states that the 300-foot distance between the <br />disturbed area and the south property line will allow sufficient space <br />for the river to establish its natural gradient without impacting the <br />adjoining property owner. Give evidence of this by providing a report <br />including data and calculations developed by a hydrologist or engineer <br />versed in stream mechanics that shows the direction and extent of head <br />cutting that will occur until the river establishes a stable natural <br />gradient. Provide this same type of evidence for the location and <br />extent of scouring that will occur downstream from the excavations. <br />Show these additional disturbances on your Exhibit E Map. <br />9. Explain why the east side boundary of the permit area is not planned to <br />be rip-rapped. State why this or some other bank protection will not <br />be necessary to protect the adjoining property from erosion damage <br />during high flows. <br />10. The Exhibit E Map does not clearly show the extent of planned <br />rip-rapping. Please show this information on the map. <br />11. Describe how the diverted Uncompahgre River will re-enter the normal <br />river channel at the north end of the Phase I excavation during Phase <br />II operations, and show this on the Exhibit E Map. <br />
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