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PERMFILE122331
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PERMFILE122331
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Entry Properties
Last modified
8/24/2016 10:20:24 PM
Creation date
11/25/2007 10:17:26 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1990057
IBM Index Class Name
Permit File
Doc Date
6/4/1990
Doc Name
FN M-90-057 ADEQUACY ITEMS
From
LEADVILLE MINING & MILLING CORP
To
MLRD
Media Type
D
Archive
No
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<br />I can see no reason why our pro <br />have proposed it could have any <br />water, ground water or any part <br />drainage. Perhaps we should be <br />California Gulch drainage might <br />our mill site. <br /> <br />2osa1 if implemented as we <br />adverse impact on surface <br />of the California Gulch <br />more concerned that the <br />have an adverse impact on <br />We do not propose to discharge any water from the mill <br />property. Any drainage which might occur from natural <br />runoff is proposed to be channeled around the tailings <br />disposal area back into its natural drainage plane, as shown <br />on Map MLR-3, Reclamation Plan. <br />i do not believe a stability analysis of the tailings <br />embankment is warranted if built as we have proposed. It is <br />shown graphically in the pictures of the tailings disposal <br />area that the proposed material does not show any evidence <br />of erosion even after standing for over a year. Tailings as <br />we have proposed, comprised of water and ground gangue <br />material from -65 mesh down to +200 mesh at about 228 solids <br />are pumpable but unless moved at a high velocity, the solids <br />will settle rapidly. When finally deposited in the tailings <br />disposal area, intent is to let the tailings settle, usually <br />right against the embankment material, let the clear water <br />run off away from the embankment material to a still area <br />for final settlement of the finer-sized fraction material, <br />and pump it back to the mill for reuse. The coarser <br />material settled against the embankment actually tends to <br />increase the stability of the embankment. Tailings tend to <br />create a naturally impervious material upon natural <br />compaction from their own weight and varied size fractions <br />in conjunction with the decanting process action of the <br />water. <br />As we have proposed the construction of the tailings <br />disposal area, it is likely that it will not contain more <br />than 2 - 3,000 gallons of water at any one time, and this <br />amount will be segregated from any inflow of surface water. <br />Since the snow melt runoff is over, it is likely there will <br />be no more until next spring unless possibly heavy summer <br />rainstorms occur. <br />ITEM $13 <br />With regard to the items requested by the Lake County <br />Planning Commission upon granting the Conditional Use <br />Permit, the Items 1 through 6 were of concern. Our <br />discussion of the concerned items at the meetings were <br />resolved as follows: <br />1. It was agreed dust control on the roads was of minor <br />concern since such light truck traffic is necessary for <br />maximum mill capacity tonnage. I agreed to remedy any <br />
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