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REV91211
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REV91211
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Entry Properties
Last modified
8/25/2016 3:12:47 AM
Creation date
11/21/2007 11:09:40 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Revision
Doc Date
10/11/1995
Doc Name
TR-23 VENTILATION SHAFTS AND DEWATERING BOREHOLE/INCIDENTALPERMIT BOUDARY CHANGE ADEQUACY REVIEW 1 F
From
DMG
To
TWENTYMILE COAL CO
Type & Sequence
TR23
Media Type
D
Archive
No
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<br />Rule 2.04.4 <br />1. For those areas to be disturbed by facilities, please submit <br />the information required by Rule 2.04.4. <br />Rule 2.04.7 <br />For the ventilation shaft(s) area, please submit information <br />required by Rule 2.04.7(1)(a)(iv), 2.04.7(3) and (4)(a). <br />Rule 2.05.3 <br />For the access roads proposed, the treatment ponds, and the <br />associated facilities please submit the information required <br />by Rule 2.05.3(3). Design criteria for the roads should <br />include, but is not limited to, plan view and cross-section <br />information. This information must be prepared and certified <br />by a registered professional engineer, (see Rule <br />2.05.3(3)(c)(vii)), as meeting the requirements of this Rule, <br />4.03.1, 4.03.2, and prudent engineering practices. Design <br />criteria for the proposed water impoundments must meet the <br />requirements of 2.05.3(4) in its entirety. Please review <br />these Rules and respond accordingly. <br />Rule 2.05.4 <br />Please submit the post-mining contour maps and appropriate <br />cross-sections for the areas to be disturbed as required by <br />Rule 2.05.4(2)(c). Also, submit the description of measures <br />to be used to plug the three holes proposed as required by <br />Rule 2.05.4(2)(g). <br />Rule 2.05.6 <br />Please submit the information required by Rule 2.05.6(3)(b)(i) <br />for those areas to be disturbed. Other than road culverts and <br />a clean water diversion, no surface water control information <br />was provided. If these areas are proposed as SAE's, the <br />appropriate sediment modelling demonstrations must be provided <br />as well as updating the SAE description text. <br />After review of the materials submitted, the Division has the <br />following specific questions: <br />At the downstream point where the clean water diversion <br />terminates, what is the potential for erosion due to the <br />channelized flow? <br />The bond calculations do not include costs for grouting of the <br />holes. If the materials from these holes is trucked to the <br />main facility as stated in the application, the bonding <br />calculations should including grouting the holes for their <br />entire depth. <br />
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