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2010-03-18_APPLICATION CORRESPONDENCE - C2009087
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2010-03-18_APPLICATION CORRESPONDENCE - C2009087
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Last modified
8/24/2016 4:01:57 PM
Creation date
3/18/2010 1:31:38 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C2009087
IBM Index Class Name
APPLICATION CORRESPONDENCE
Doc Date
3/18/2010
Doc Name
Second Adequacy Response
From
Peabody Energy
To
DRMS
Email Name
TAK
Media Type
D
Archive
No
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Response: The term "passive recreation" is on page 2.04-7 of the PAP and refers to <br />activities such as hiking, bird watching, scenery, etc. The text on page 2.04-7 has been <br />revised and is included with this response package. <br />Section 2.05.3 <br />60. Please add to page 2.05-7 the swell factors required by Rule 2.05.3(6) for the <br />temporary overburden stockpile material during each phase of operations (for <br />example, when the portal face-up is excavated and when the stockpile is regraded to <br />postmining contours). <br />Response: Overburden from the excavation of the face-up area and surface facility <br />construction will be hauled, placed and compacted to create the mine facilities bench and <br />coal stockpile area. Given that PSCM expects to encounter some resistant rock in the <br />portal excavation, it is anticipated that some blasting will be required. It is anticipated <br />that approximately 140,000 cubic yards of topsoil will be salvaged and stockpiled, and <br />that 0.8M bank cubic yards of material will be excavated and placed in the facilities <br />bench and coal stockpile area. During the construction phase embankment materials will <br />be installed to several compaction specifications, typically 90% to 95%, resulting in an <br />overall swell factor of approximately 20%. Essentially all the soil material and <br />overburden removed and stockpiled during construction of the portal and related surface <br />facilities will then be placed and compacted by equipment traffic to approximately 80% <br />of maximum dry density during reclamation of the portal and facilities area when they <br />are no longer needed to support ongoing or future mining and related operations. Given <br />these considerations, there should be no excess spoil, and the related regulatory <br />requirements are not applicable. The text on page 2.05-7 has been revised and is <br />included in this response package. <br />61. Maps 2.05.3 MIA and M I B show two areas within the support facilities area south of <br />Pecoco Pond and northwest of culvert 31A that are proposed for new disturbance or <br />redisturbance by PSCM activities. Maps or text do not provide descriptions of the <br />support facilities (excavations, structures, or materials storage, etc) that are proposed <br />in these areas. Such information is needed for evaluating the adequacy of drainage <br />control (Rules 4.04 and 4.05) and for estimating reclamation costs (Rule <br />2.05.4(2)(b)). Rule 2.03.3(1) requires information in the application be presented <br />clearly. Rule 2.05.3(3) requires description of all support facilities. Rule 2.10.1(1) <br />requires that a map of the disturbed area include all support facilities. Rule 2.10.3 (1) <br />allows the Division to require that a map show relevant information, for good cause <br />shown, based on site-specific condition. To ensure compliance with Rules 2.03.3(1), <br />2.05.3 (3), 2.10.1(1), and in accordance with Rule 2.10.3 (1), please identify on Maps <br />2.05.3 M 1 A and M 1 B the support facilities that are proposed in the two areas. <br />Response: The disturbance boundary in the southern portion of the proposed PSCM <br />disturbance boundary (south of Pecoco Pond) has been revised to reduce the area of <br />proposed disturbance in this area. In addition, the proposed waste rock disposal area has <br />8
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