REV99103

• Permit No: C1981041
• IBM Index Class Name: Revision
• Doc Date: 3/6/2007
• Doc Name: Adequacy Response Submittal
• From: DRMS
• To: J.E. Stover & Assocaites
• Type & Sequence: PR3
• Media Type: D
• Archive: No

PR-3 2"d ADEQUACY REVIEW
General
DRMS requested confirmation that the currently approved Postmining Land Use
for all disturbed areas is "Fish and Wildlife Habitat". The requested confirmation
was provided. Item Resolved.
2.05.3(3~(cl and 4.03.2 Access Roads
2. DRMS requested designs For adequate ditch protection for the segment of
proposed access road cut slope ditch with 10% grade, and further requested a
wearing surface on the access road segments that exceed grades of 3%, pursuant
to requirements of 4.03.2(1) and 4.27.3(7). The wearing surface (gavel) was
adequately addressed, however; further amendment appears to be warranted
regarding ditch protection. Narrative response to the comment indicates the ditch
lining would be a hardpan shale. This was specified in the original design, but
was missed in our review. The original design (without riprap) would be
acceptable if the 10% ditch segment is built in hardpan shale or more resistant in-
situ rock. However, amended SEDCAD run on revised page 14-6-18 shows 3"-
11.5" riprap, with D-50 of 9". The revised design table on Exhibit 26 (Section
E2-E2) shows riprap size of 3"-9". To be consistent with other entries in the
table, and to conform with the amended SEDCAD run, the riprap size listed
should be the D-50 size (9").
Please either amend the Exhibit 26 table entry for Section E2-E2 to specify
9" D-50 riprap, or (if the 10% ditch segment will be built in hardpan shale or
more resistant in-situ rock) please revert to the original design and SEDCAD
run.
3. DRMS requested documentation required by 4.03.2(1)(g)(ii) (written landowner
request), that the proposed portal bench access road be retained for the postmining
land use. Appropriate documentation was incorporated as pages A14-5-29 and 30
(letter from the landowner, Snowcap Coal Company, Inc, requesting retention of
Access Road lA and portion of Access Road 1, with accompanying diagram).
Item Resolved.
4. DRMS requested certain additional design detail regarding Access Road lA. The
requested detail was provided in amended Exhibit 26 and revised page T13-2-6.
We note one minor error on revised page T13-2-6; the map location reference at
the top of the page is to Exhibit 6A, which was not updated by PR-3. The roads
as depicted on Exhibit 6A do not correspond to the narrative description on
revised page T13-2-6; it would appear that the map location reference should be
to Exhibit 6C. Please amend the map location reference at the top of revised
page T13-2-6 to specify Exhibit 6C.