2011-09-09_APPLICATION CORRESPONDENCE - C2010089 ‎(2)‎

• Permit No: C2010089
• IBM Index Class Name: APPLICATION CORRESPONDENCE
• Doc Date: 9/9/2011
• Doc Name: Preliminary Adequacy Review No. 2
• From: DRMS
• To: Western Fuels Association, Inc
• Email Name: SB1
• Email Name: MLT
• Media Type: D
• Archive: No

C- 2010 -089 PAR No. 2
New Horizon North Mine
9- Sep -2011
Page 18 of 25
However, there do not appear to be stated justifications for the use of a curve number of 79
for culverts C -6A and C -6B and the use of a curve number of 89 for culvert C -12. The
Division requests that the appropriate section of the permit application be updated to detail
the justifications for using the curve numbers of 79 and 89 in these three culvert designs.
20. Response accepted.
21. Response accepted.
22. Response accepted.
23. Response accepted.
24. Response accepted.
25. On Map 2.05.3(3) -1, the subwatershed for the topsoil stockpile area is mislabeled as SW1-
A. Please revise Map 2.05.3(3) -1 so that the label reads SW -TS.
DRMS: The Division has no further concerns with this question. Map 2.05.3(3) -1 was
revised in the submittal dated May 26, 2011. However, the Division has an additional
question regarding topsoil.
a) On page 8 of Section 2.05.3(4), WFC has requested a small area exemption designation
for the topsoil berm that will be constructed in advance of stripping. However, a small
area exemption is defined under Rule 4.05.2(3) and requires a demonstration that the
area will meet sediment limits. This does not appear to apply in this situation. In order
to avoid any confusion, please revise the discussion on page 8 by using a term other
than a small area exemption when referring to this berm.
26. Response accepted.
27. Response accepted.
2.05.3(5) — Topsoil
1. A section by this number was not provided with the application submittal. Please revise the
PAP to include a section addressing the requirements of this Rule. Conversely, if WFC
intends to incorporate the topsoil narrative and maps elsewhere in the permit, please provide
a brief section here referring the reader to the location where the required information may
be found.
DRMS: A reference was added as requested. Please change the font for the section header
to Bold, consistent with the format of the surrounding paragraphs.
2. In accordance with the requirements of 2.05.3(5), please also specify the volume(s) of
topsoil to be stockpiled and incorporate this information into the PAP text and map. Please
describe the methods that will be used to achieve compliance with the topsoil storage
requirements of 4.06.3.
2.05.3(6) — Overburden
1. As with 2.05.3(5), above, the PAP does not provide a narrative specific to Rule 2.05.3(6).
Please revise the application to address the requirements of 2.05.3(6), or clearly reference
the location where the information may be found.