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~4 <br /> <br />~~I I~~I~~II~~'~~ ~~~ <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Naw rat Resources <br />1713 Sherman 51., Room 215 <br />Denver, CO 80203 <br />Phone: D031066~3567 <br />FAX 1303) 832-8106 <br />February 9, 1994 <br />TO: File ~~//Ci <br />FM: Shawn Smith ~/ D <br />Re; Addendum to NOV C-93-104 Termination on 2/4/94 <br />Twin Pine Mine (C-83-058) <br />Pur~ose• <br />pF Cpl <br />Ae0 <br />•~~• <br />•IB 16 <br />Roy Rnmer <br />Governor <br />MichaCl B. Long <br />Division Dueaor <br />This memo is to clarify the "Enforcement" page of the inspection <br />report dated February 4, 1994 for the Twin Pines mine site and NOV <br />C-93-104 termination. <br />Observation and Facts: <br />Upon inspection, all grading of the bench and drainage structures <br />on the refuse pile reclamation was found to be complete. The <br />remaining step in the final reclamation of the refuse pile included <br />the placing of the geotextile fabric on the upper bench and a <br />portion of the ditches. Due to the need to use the bench by the <br />AML Program for access to the old utility road for purposes of <br />reclamation, the final placement of this fabric will be delayed <br />till spring 1994. Laying of the geotextile fabric does not <br />constitute an abatement step as defined in the original NOV, rather <br />it is an additional insurance against erosion in the final <br />reclamation plan for the pile as outlined in the Technical Revision <br />submitted as abatement for the NOV. <br />Termination• <br />Therefore, the NOV was terminated since the operator had <br />accomplished all that was at this time, possible to address the <br />concern outlined in the NOV, mainly surface water drainage off the <br />pile. The abatement steps for the NOV have been accomplished - <br />submit a Technical Revision addressing the drainage off the pile <br />and implement the revision. <br />In addition to submitting the TR, the operator had previously <br />constructed a dirt berm at the toe of the refuse pile, thus <br />allowing the surface flow to exit to the drainage ditch and into <br />the upper bench sediment pond. This interim abatement step was <br />made on July 16, 1993 and remained in effect until actual <br />reclamation of the refuse pile began in mid-January 1994. <br />