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REP09416
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REP09416
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Entry Properties
Last modified
8/24/2016 11:39:03 PM
Creation date
11/27/2007 12:07:37 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1978091UG
IBM Index Class Name
Report
Doc Date
6/12/1997
Doc Name
FINAL PERMIT COLO DISCHARGE PERMIT SYSTEM STORMWATER
From
CDOH
To
GOLDEN WONDER MINING LLC
Media Type
D
Archive
No
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<br />without exposure to the dump material. Once the pipe is emplaced, <br />the trench across the dump would be backfilled. <br />Diversion berms will be excavated and emplaced along <br />the current DMG or MLRB permit boundary below the 6 Level dump to <br />capture runoff from the dump. A pipeline will carry the runoff <br />from the low point in the berm and down Deadman Gulch along the <br />hillside to a location where an existing terrace provides enough <br />area to construct a settling pond. If this area turns out to be <br />too small to contain a properly sized pond, the pipeline can be <br />extended to a place on the hillside where there is enough room. <br />However, these slopes are very steep and finding adequate semi-level <br />ground may be a problem. This construction will require an expan- <br />sion of the existing permit area and timing of construction will <br />depend on that and doing engineering work (surveying, foundation <br />studies and other geotechnical parameters, etc.). Because of the <br />steepness of this terrain, getting equipment to construction sites <br />will also be a limiting factor. <br />2.) Materials Handling and Spill Prevention - The only <br />materials being handled on this site which present potential prob- <br />lems with spills are fuel, lubricants, and explosives. Handling <br />methods have been previously discussed as has spill prevention. <br />3.) Sediment and Erosion Prevention - The foregoing dis- <br />cussions on water barring roads and establishing a settling pond <br />pretty much cover sediment and erosion prevention. <br />g.) Employee Education <br />All mining operations are under the jurisdiction of the <br />U.S. Department of Labor, Mine Safety and Health Administration <br />which requires 40 hours of new employee safety and job training <br />for new hires and periodic refresher training for all employees. <br />Employees can be indoctrinated on good housekeeping practices at <br />these sessions. <br />h.) Testing For Non-stormwater <br />No stormwater runoff has ever been observed at this site <br />so it has never been sampled. If it does flow into the runoff <br />settling pond, it can be sampled in that location. There will have <br />to be a physical separation of the mine water from stormwater run- <br />off but that should be easy enough by piping the mine water to <br />whatever water treatment is deemed to be appropriate. At the same <br />time, the runoff will be from the mine dump itself and chemical <br />analyses of the runoff waters should be somewhat reflective of <br />the mine water so such analyses are not going to prove non-mingling. <br />It must be noted that if percolation through the colluvium proves <br />to be a good way to clean up the mine water and runoff water, there <br />may be advantages to mixing them, particularly given the small mine <br />water flow. The seasonal runoff in Deadman Gulch and the tributary <br />drainage will be captured and piped through the 6 Level dump be- <br />fore it is exposed to the dump material. Whenever it is flowing, <br />it can be sampled to see if it is picking up any metals from the <br />dump. <br />COMPREHENSIVE INSPECTION <br />The Mine Manager and Mine Foreman will be continuously moni- <br />(6.) <br />
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