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orthWest (;olorado (;onsultants, Inc. <br />Geotechnical / Environmental Engineering • Materials Testing <br />122011 <br />r1a ?g?ama?p?, <br />SaEeiN <br />Subject: Marr Mine - Permit No. C-80-006 <br />Permit No. C-80-006, Loadout Pond <br />Jackson County, Colorado <br />Dear Mr. Zuber, <br />May 10, 2011 <br />Mr. Rob Zuber <br />Colorado Department of Natural Resources <br />Division of Reclamation, Mining & Safety <br />1313 Sherman Street Rm. 215 <br />Denver, CO 80203 <br />NWCC Project No. 05-6371 <br />Reference Number: 2450289 <br />NWCC, Inc. is pleased to provide you with the certified sediment pond inspection for the Marr Mine located <br />in Jackson County, Colorado. Mr. Brian D. Len from NWCC Inc. conducted the inspection of the Kerr <br />Loadout Pond on May 9, 2011. The inspection form completed at the time of our site visit for the subject <br />pond is attached. <br />The purpose of the inspection was to provide annual certification by a Professional Engineer registered in the <br />state of Colorado. Photographs taken during the inspection are also included. <br />The subject pond, which is located to the west-northwest of the Loadout Facility, as well as the embankments <br />appear to be functioning as designed and intended. The elevation of the water surface in the pond was below <br />the primary outlet elevation and a slight amount of seepage was observed flowing through the outlet channel <br />and pond weir (gauge reading = 0.04 feet). <br />Cleaning of the outlet channel bottom and removal of willows from the pond embankment situated south of <br />the channel (NE side of Pond) had been completed since our previous site visit/inspection. A number of the <br />willows removed from the embankment were still laying on the embankment surface. NWCC recommends <br />that the holes observed in the dam crest after removal of the willows and root balls be properly filled in and <br />compacted as soon as possible. In addition, the willows/root balls should be removed from the pond and <br />embankment areas. <br />(970) 879-7888 • Fax (970) 879-7891 <br />2580 Copper Ridge Drive • Steamboat Springs, CO 80487