REP00045 ‎(2)‎

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OEPARTpdEN70f-NhYURAL RESOURCES
D.Monte Pascoe Execulive Director 999
MINED LAND RECLAMATION
423 Centennial Bwlding. 1313 Sherman Street
.— _�... ., Denver.Colorado 80203 Tel. [phone]
David C. Shelton
Director
MEMORANDUM
(20-0ctober 1981
TO: Sandy Emrich \ )
FROM: Jim Pendleton �-
RE: Review of Empi.re'Ener , s' Supplemental. Subsidence SubmitLals for
the dgle ;!5• f'19 Underground Coal. Mines
I have reviewed the subsidence-related portions of Empire Encrgys'
latest supplemental submissions. The submission represents a significant
improvement concerning these subsidence-related Lopics. Remaining deficiencies
are minor in nature and consequence. I believe thnL these deficiencies can
be rectified by clerical and drafting nmendmenLs prior to my completion of
the required draft findings.
(1) In Section 4.6. 5, "Subsidence Monitoring Program" Lhe applicant includes
the statement ; "The monitoring will continue unLi.L results indicate subsidence
has ceased and the Division has been no_tLIied of Lhe Lerinin;ILLnn of monitoring."
This statement should be amended to rcrrd; "The moni.Loriny, AIL cunLinue until
results indicate subsidence lens ceased and the Division has z�roved the
termination of monitoring."
(2) The applicant further indicates within SecLion 4. 6. 5 tint Lwo survey
monument types will be insLalled. IlolJever, Lhe :11)plica111- fails Lo indicate
which monument type will be uLilized for which sper'ific monument- installations.
I believe that the monument type could easily be indicated by amending Map IV-7
to include a designation of monument Lype beside each indicated monument or
set of monuments.
(3) In Section 4.6. 2.4 the app.licnnt indicates that several of the potenLially
affected structures will be nail monumented and monitored Lo detect subsidence.
Map IV-7 should also be amended to indicate which structures will be so monitored.
(4) The applicant does not i.nc.lude any system of designation for Lite proposed
subsidence monuments indicated on Map IV-7. rl'o avoid later confusion and to
greatly simplify required monitoring; reporting; I recommend that Lhe npplicnnt
indicate a numerical designation beside each monomenL shown on Map IV-7. This
same designation could indicate monument Cvpe (Sec (2) , nbove) .
cc: Ed Bischoff