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'r ~ I:.li ail II ~~I. iJ„~ naM1l'I~.'n~.R~ ~ - - - _ - __-- <br />., <br />uu~.vnrnerat of r~nn)nnC RESrnInCEs <br />'iPr1. l Il;uii.: D Sn enn~n. Exreullvr Uu~_c lnr 999 <br />:~..,: ~.; 41;1,. <br />~~<,'~rr~rrr1(R ~vC tl:C A',IY ~~:~~~A~ YE A'.1 .s.~~~i~I~~0~1'I"~ <br />~~' ~~: 'n7 ;": <br />:d H" i~ •:~: ~ , <br />. ..~.,~ ~`~~7y+,,~.:~~',e• f,_.. 723 Centcnnlal Building, 1373 Sherman Street <br />' ~ ~ ~ , .jai":•hV~;.-~~ Uc+wcr, Colm ado 80203 Tcl. 1303) 839-3567 <br />'- hlamlet J. Barry, III, <br />Director <br />hi h: i~~1 tl I: A N D U ht <br />f <br />i <br />..i <br />PRflbl: .lim I'c ndlcCl~n '' r.~-.- •~ ~- ~ ~~ ~ - <br />~I <br />WA'I'F:: .Il,n,• I I , I'IISU .' <br />I{I!: Gcvicw of rho y,r.o l:cchnical. aspects of Snnl and Coa:L's Apev, 112 underground <br />r~ua 1. nu nc. <br />Subsidence CnnCrol Plan <br />Under Chc inCCl: im rugula Cions no subsidence conCrols, ocher Chan Che 211 Federal <br />P.e;;ulati.ons administered by the ll.5. Geological Survey and Office of Surface <br />hlin~ing, arc nppli.c:.tba.c to Chris permit application. however, in response to your <br />rl~irecCi.ve, 1 utter Chc froll.owing comments regarding compliance with our antici- <br />pated pc.rma cent Co Lorado regulations. <br />'fhc Suhsidrnr.e ConCrcnl Plan trot the Apex ll2 mine, prepared by D. H. lemling & Co., <br />de~r'r: nut r~nlfu rm s:LricLly wi C;t the phaSCCI fornvtC of our cu r. r.en C.ly proposed sub- <br />s:i.rln_ncc re1;u.LaC.ion, however, the information appears adequate to satisfy a major <br />pucCion o[ the proposed data and analytical requirements. 'fhe proposed regulations <br />rerluire ronf:onnance with a 4 componenC phase system. 'fhe first phase requires <br />r•ncll uppl icnnC C.. ;nbnril: :m i.uventory of eheir pernriC and adjacent area to de- <br />lineate existing; structures and renewable resource lands. 13mling's report in- <br />rlndr~:: :I "::Crncrw-o :uld rcnc_wahlc resource survey". 'I'Ilnt survey deCincs Chrec <br />s,Cructums ("oue residence type building used in the summer and two ouC-buildings°), <br />.~ ~ma:Ll stock pond, grazing lands and natural hay fields, all indicated on )exhibit <br />Il- <br />'I'hc second phase o[ the amended subsidence regulation requires the preparation of <br />n descrii,Ci.un of "the wnrsC pnss:Lbl.e conseyucnces which subsidence, if it occurred, <br />ronld have trot sCrurC~u-os and renewable resource ].ands". Emling's analysis com- <br />hinr~.r. Lhi~; "word ray:c" si LuaCion wi Ch leis ana]ys:i.s of pred~ic CCd subsidence, <br />cahich consCil:uCes Chc third phase of the proposed subsidence regulation's format. <br />'fhe third phase of the ^mended subsidence regulation consists of the preparation <br />oC a subsidence survey, including a detailed subsidence prediction. Subsidence <br />survey also includes a prediction of material damage and diminution of reasonably <br />foresecnhle use of stru.:Cures or renewable resource lands which occur within the <br />pn nnir nnrl ad jnrr•nr aeon. P.mlin;; S Co.'s report ser.t~ion and title "subsidence <br />rl:nna;~c pn CenC i.al" rce;ponds co pleases 2 and J of. the pro poscrl subsidence regulation. <br />