2011-09-29_PERMIT FILE - M2009056

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11. A long -term recommended off -site mitigation is mine applicant cooperative financing to pave the 1 -mile access route to the site to reduce total fugitive dust generation from material and vehicle movement. 12. Compliance with CDHPE requirements if threshold of 5 tons /year for uncontrolled PM10 is exceeded. This would involve preparation of a Mining Operations Fugitive Particulate Matter /Control Plan. Implementing the recommended mitigations would reduce any adverse residual effects on air quality from Destiny Mine operation. The reviewer recommends that the operator conduct regular visual fugitive dust monitoring at the site during hours of operation as part of the 3809 mine inspection to verify PM10 migration is limited to the BLM administered lands and homeowner protections. No Action Alternative Direct and Indirect Impacts: If the proposed Destiny Mine is not permitted there will be no direct or indirect impact to current air quality in Park County, Colorado or near Class I areas. Cumulative Impacts: None Mitigation/Residual Effects: None Alternative 1 Direct and Indirect Impacts: Direct and indirect impacts to air quality that would result from a Destiny mine operation, as described in Alternative 1, are considered similar to impacts and CDPHE permitting requirements as described in the Proposed Action. Assessment is based on similar mine operation hours, total exposed surfaces for dust generation, equipment use and traffic. There is the potential for dust generation to be higher from materials stockpiles in Alternative 1 in comparison with the Proposed Action based on the greater length of time that the disturbed soil surface would be exposed to wind. However, the reduction is total vehicle traffic from the operation, given sand and gravel would not be transported to markets, would result in lower fugitive dust generated on Big Thompson Park road, and thus lower risk of exposure in Alternative 1 vs. the Proposed Action. Based on data available and the low relative emissions of CAAQS criteria pollutants, specifically dust (PM10), NOx, and CO, the direct and indirect adverse impacts to air quality and people from the Alternative 1 to permit the mine without sand and gravel sales are considered long -term but moderate to immediate homeowners and people recreating in the adjacent recreation area, long -term and minor to Park County, and long -term but negligible to Colorado and Class I areas. Cumulative Impacts: Cumulative impacts to air quality are considered the same as in the proposed action. Mitigation/Residual Effects: Same as Proposed Action CLIMATE AND CLIMATE CHANGE Affected Environment: 18