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r <br />L <br />p r.to nir ca,c ot, ` coi~ve Dim upr ~ ~ r.-'~ {_.'r'\ <br />423 Centennia' F''iilding. 1313 Sherman Street <br />Denver, Co~or.n~ro Bo203 7e1. (303) 866-3567 <br />David C. Shelton <br />Director <br />LJ <br />Pt 1, IORANDt t? I <br />DATE: June 3, 19E2 <br />T0: Sandra Emrich ~ <br />_ t <br />FROM: Jim Pendleton t~~- ~•' >>-'~"~""'~- <br />/l <br />RE: Colorado IJestroorelastd, Ines 1'toposed Subsidence 1•]onitoring Report <br />Format '-~~ <br />I have reviewed Cti'I's proposed format for subsidence monitoring reports, <br />contained in Patricia M. Farnsworth's letter to you, dated Piay 14, 1982. <br />The compan}' was required to submit this proposed report format in Stipulation <br />No. 5, attached to their permit for the Orchard Valley nine, permit <br />No. C-038-61. The purpose of this report format was to facilitate complete <br />data reporting and reduction without the usual first atte,pt confusion. <br />Stipulation No. 5 to permit No. C-03F-81 reads; <br />"The Division directs Colorado 1•'estmoreland,Inc. to submit reports of <br />its subsidence monitoring pnogram on a semi-annual basis, commencing <br />one month after the installation and initial surveying of the subsidence <br />monuments. Further, due to the complexity of the perrcit area geology, <br />presence of steep slopes, and sensitive hydrologic elements, Colorado <br />S;estmorel"and, Inc. is directed to submit a proposed subsidence monitoring <br />report format to the Division fir approval. This report format should <br />recognize the importance of continual update of subsidence data interpretation, <br />monitoring of ground eater levels and spring flows, monitoring of mine <br />inflow, and subsurface ground conditions which could be correlated to <br />subsidence prediction. This rcpctrt format shall be approved b}' the <br />Division prior to [he co mmencement of extraction pf:'coal t~ithin the <br />5 north panel of the Sth East fQain of the Orchard Valley min e.° <br /> <br />Pls. Farnsworth indicates in her letter of May 14, 1952: "The armual report <br />for this will include inforr,ation fro-. Stipulations 2] and 22." Stipulation <br />P:o. 5, quoted above, requires semi-annual reports. <br /> <br />.~~.~-..~~ - . -~.~~~ ~- .. ~',o .. ..~+~-a.~"=mss .~-- ~. _--a_ - -- ~' <br />