2011-05-12_PERMIT FILE - M2011028 (3)

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The first and probably most significant issue has to do with dust and the mitigation thereof. The proposal talks about water being used to control dust as well as keeping vehicle speeds down to control dust and no fugitive dust is allowed to leave the property boundaries. What are the ramifications if dust does become an issue and how will that be addressed? Who oversees the operation in order to require some sort of mitigation take place? Ifstrong winds come from the SW pushing dust toward the airport, does the airport have the ability to ask that operations cease? The other typical issue with construction near an airport is the height of construction. With no elevations being shown on the plan contours it is tough to tell how the site sits in relation to the airport's elevation. As the Federal Aviation Administration (FAA) has ultimate authority with regards to height and airspace around airports per Federal Aviation Regulation Part 77 Objects Affecting Navigable Airspace, please make sure all of the appropriate forms are filed with the FAA to ensure the safety of the users of the Animas Airpark. In particular FAA Form 7460-1 will probably be required due to the sites close proximity to the Airport. The Division thanks you for this opportunity to provide comment and looks forward;to working with you in addressing these and any other issues that might arise. If you have any questions about the above comments feel free to give our office a call at 303-261- 4418. " Colorado Division of Reclamation, Minine, and Safety Comments were received by mail on May 18, 2010: "The proposed excavation and processing activities will need to be under a DRMS reclamation permit. WCA (proponent) will need to apply for and obtain a regular 112C permit. " Colorado Division of Water Resources Comments were received by email on November 30,2010: "Pursuant to State Engineer Memorandum to County Planning Directors dated March 4, 2005 and cover Memorandum from Dick Wolfe, Director, dated March 16, 2005, the proposed project is not a subdivision of land as defined in C. R. S. 30-28-101(10)(a). Therefore these comments are based on a cursory review, and comments should be considered to be informal. The applicants are requesting a Class II Land Use Permit from La Plata Countyfor use as a gravel mining and processing area. The subject area is approximately 121 acres located near the section corner of Sec. 12U& 13, R10W, T34N, and Sec. 7U & 18, R9W, T34N, N.M.P.M., near the southwest corner of the Animas Air Park The proposed mining operations will not expose groundwater. Well 053789-F will be used as a source of water for the assumed purposes of product washing, dust control, and other mining production related activities. Pumped water is to be stored in a holding pond. The new narrative describes the water demand of mining as being 65 gpm. The permitted maximum flow rate of well 053789-F is 25 gpm with an annual maximum withdrawal of 20 acre-feet. Well permit no. 149839 is also proposed as a possible source of water; it is currently permitted as a domestic well with a maximum flow rate of 15 gpm and a maximum annual withdrawal of 1.5 acre- feet. This well will have to be repermitted before used for the intended purposes. Also, if the project will consume water at the rate of 65 gpm, 24 hours a day, this equates to 102.3 acre feet per year. The current proposed wells do not have the required permitting to use this amount of water. Additional Project No. 2010-0055 Page 14 of 21 Animas Glacier Gravel Class II EA/TH W:'.21Ea1Y:11a,he Construction Auffio-f"C") -P.O. Box AA - Tovoac'7-c ', CO 81S24? A-IlN1AS 6CAGl1n2 c.RAaV1rL ?k.44t P? IT Mi - P"F- M- h6