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PERMFILE47383
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PERMFILE47383
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Entry Properties
Last modified
8/24/2016 10:49:25 PM
Creation date
11/20/2007 1:07:56 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981038A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
2.05.6(3)(b) to end
From
p. 100 to 164
Section_Exhibit Name
PART 2.05 Operations and Reclamation Plans Part 3
Media Type
D
Archive
Yes
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42.05 APPLICATION FOR PERMIT FOR SIIRFACE OR UNDERGROUND MINING ACTIVITIES -- <br />MINIMUM REQUIREMENTS FOR OPERATION AND RECLAMATION PLANS. <br /> <br />2.05.6 Mitigation of Surface Coal Mining Operation Impacts. (Cont'd.) <br />(6) (f) (ii) (Cont'd.) <br />,~ <br />Although not undermined during this permit <br />term, damage to the Pitkin Mesa Pipeline will <br />be prevented through the protective measures <br />of limited and partial coal extraction below <br />800 ft. overburden, as discussed in the above <br />Renewable Resource Land Subsidence Control <br />Plan. In areas of greater than 800 ft. over- <br />burden and less than 1,500 ft. of overburden, <br />maximian surficial strains induced by subsi- <br />dence may exceed the strength of the aqueduct <br />(refer to Strain Calculations in Appendix 3). <br />Although temporary disruption may occur, a <br />ready supply of replacement pipe and couplings <br />would facilitate prompt repair. See Subsi- <br />dence Repair Handbook, Appendix 3. Water lev- <br />el measurements, made once daily would detect <br />any disruption in less than 24 hours. In such <br />instances, the storage capacity of the Pitkin <br />Mesa Pipeline system would provide ample water <br />supply for domestic consumption while repair <br />was being completed (refer to calculations in <br />Appendix 3). <br />(A) The anticipated effects of planned sub- <br />sidence is described in detail in Geo- <br />Hydro's study, Volume 3. Thhe effects <br />on rangeland, surface water resources, <br />ground water resources, colluvial de- <br />posits, landslides, and structures are <br />also described. Typically, due to the <br />overburden depths, projected effects <br />are not significant. Continued subsi- <br />dence monitoring will substantiate [his <br />finding or revision will be made to the <br />Subsidence Control Plan. <br />(B) (I) Backfilling has been and may <br />continue to be used for under- <br />ground gob disposal. Due to <br />ventilation and roof support <br />considerations, backfilling <br />will not be practiced in <br /> <br />Added 12/26/84 <br />Revised 12/26/84 <br />Revised 10/12/86 <br />Revised 10/01/87 <br />158 <br />
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