2015-11-17_GENERAL DOCUMENTS - M1983083

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Colorado Division roj of Reclamation, Mining & Safety FRANKLIN MINE COMPOSTED BIOSOLIDS PROJECT Clear Creek County, Colorado — 2015 Project Location and Background The Franklin Mine and Mill is an underground gold mine located approximately 2.7 miles north of Idaho Springs in Clear Creek �t County, Colorado. A Hard Rock Mining and Reclamation r °' Permit was issued by the State of Colorado in 1983 (M-1983- 083). The mining operator did not fulfill their reclamation obligations, so in 2008 the DRMS revoked the Franklin permit and the forfeited the financial warranty. The site was reclaimed by DRMS in 2009 for a cost of$533,159.95. Overall, the site is in good condition, the drainage channels are stable and vegetation is established on the north side of the mine. The south side of the mine, where tailings ponds 4 & 5 were located, is nearly void of vegetative cover due to lack of suitable growth medium. Construction Summary Composted Biosolids are nutrient rich organic materials derived Above:A large from municipal wastes that are used to develop heathier soils. excavator is Climax Molybdenum Mine has been producing Composted incorporating the Biosolids for use in reclamation efforts at their site and has Composted generously donated material to be used for DRMS reclamation Biosolids into the projects. The project work included hauling/trucking composted soil at lower 1.5-acre ssectsection biosolids from the Climax Mine to the Franklin mine for use as a of the Franklin cover material. The work also included incorporating the Mine.Area composted biosolids material into the soil, mulching and seeded and mulched. reseeding the area. From November 3 to November 10, 2015, approximately 400 Left: Composted cubic yards of composted biosolids was hauled to the Franklin Biosolids mine. The material was applied evenly over 1.5 acres and spread incorporated into to a depth of 2-inches to 4-inches. The ground surface was the soil to a depth of 8- scarified using ripper teeth of an excavator bucket to break up the inches. ground surface and incorporate the composted biosolids into the soil. Soil was roughened to a depth of 8-inches. After the material was incorporated into the soil, the are was seeded and General Contractor: mulch was applied at a rate of 2 tons/acre. McCollum's Excavating,LLC Left: The size of a small PO Box 790 • xr. ` � � pile of Composted Nederland,CO 80466 A.e" Biosolids(approximately 28 cubic yards)that is Funding: In kind donation from Freeport McMoRan ready to be worked into Total Project Cost: $20,000.00 the soil. Fourteen loads of composted biosolids DRMS Project Manager: * D N R COLORADO were hauled in from the Erica Crosby Climax Mine to enhance CO , Division of Reclamation, ' Mining and Safety reclamation.