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SENT ~Y~Administration Office .10-19-93 ~11~47AM CYPRUS YAMPA VALLEY y <br />~ ~ ~~S <br />303 632 6106~ii 2 <br />Cyprus Yampa Valley Cad Corporation <br />28587 Routt County Road •27 <br />Oak Creak Coloratlo x0487 <br />803-976-3900 <br />October 19, 1993 <br />Kent Gorham <br />Reclamation Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 216 <br />Denver, CO 80203 <br />Re: <br />Dear Mr. Gorham; <br />The following information is being provided fo- Inclusion into the penalty assessment process <br />for the referenced Notlee of Violation. Please forward a copy of this Information to the <br />Assessment Officer reviewing this NOV. <br />DMG Issue <br />1) Baseline data for lines A-A' and B-B' wea not collected one month prior to the <br />commencement of longwell mining ae required by your approved permit, and Rule <br />2.O6.6(6)(c)(D) <br />Th6 Senior Engineer in Charge of subsidence monitoring, Mr. Collin Stewart, interpreted the <br />referenced items to mssn "within 30 days", rather than "30 days prior" es the Division has, <br />resulting in the current issue. <br />According to Mr. Stewart, ens should ideally complete baseline surveys as close as possible <br />to the start of active subsidence, thus providing a minimal opportunity for other surface <br />activities to impact the subsidence baseline. According to Mr. Stewart, the key technical <br />requirement for baseline data are the monument elevations prior to the start of subsidence, <br />and the baseline monitoring which wea conducted at the Foidsl Creek Mine utlsfies this <br />technical requirement. <br />DMG Issue <br />2) Ons week of data collection was not dons between 12/22/92 antl 1/7/93 (16 days) <br />