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REV09218
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REV09218
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Entry Properties
Last modified
8/25/2016 1:09:45 AM
Creation date
11/21/2007 10:00:41 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Revision
Doc Name
TRAPPER MINE RESPONSE TO PR-1 ADEQUACY RESPONSE DOCUMENT
Type & Sequence
PR1
Media Type
D
Archive
No
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<br /> <br />TRAPPER MINE RESPONSE TO PR-1 ADEQUACY RESPONSE DOCUMENT <br />May, 1987 <br />4. Surface Water and Sediment Control <br />Volume for sediment at the Coyote Dam will not be required as long as <br />methods are detailed to minimize stirring of bottom sediment during pump- <br />ing of the Colt Pit and as long as the newly-proposed surface mining area <br />will not drain to the Coyote Dam. <br />Response <br />In the past when Trapper has pumped out the north end of active pits, the <br />pump is either floated on the water surface or suspended above the water <br />surface. The pump pickup pipe has been suspended above the bottom of the <br />pit such that excessive amounts of sediment are not picked up. I expect <br />this same procedure to be followed when Colt Pit is pumped. <br />According to Map M-51, sheet 2, Coyote Diversion Ditch No. 1 is to carry <br />pumpage from the existing Colt Pit. Based upon its planned installation <br />route, it cannot be used to control any significant new disturbance due <br />to reactivation of Colt Pit. <br />
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