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area of the Site, AADT volumes are 27,300 and HCAADT volumes are 1,140. The <br />estimated average of 40 trucks per day is low compared to the current traffic volumes on <br />Trunk Highway 169. Additionally, a large portion of the traffic generated from the site <br />will not access Highway 169 as they will utilize on site haul roads to deliver materials to <br />Elk River Bituminous which is located approximately th mile southwest of the property <br />and trucks that do utilize Trunk Hwy 169 will access via the 225th Avenue Interchange. <br />Therefore, the proposed mining operation is not anticipated to have an adverse impact on <br />traffic in the surrounding area. Proposed transportation routes for vehicle traffic from the <br />site are illustrated in Figure 11 in Attachment A. <br /> <br />22. <br /> <br />23. <br /> <br />Vehicle-related air emissions. Estimate the effect of the project's traffic generation <br />on air quality, including carbon monoxide levels. Discuss the effect of traffic <br />improvements or other mitigation measures on air quality impacts. Note: If the <br />project involves 500 or more parking spaces, consult EA W Guidelines about whether <br />a detailed air quality analysis is needed. <br /> <br />As discussed in Item 21 above, the proposed project is not anticipated to cause traffic <br />congestion on nearby roadways. Therefore, the project is not anticipated to significantly <br />decrease air quality in the area. <br /> <br />Stationary source air emissions. Describe the type, sources, quantities and <br />compositions of any emissions from stationary sources of air emissions such as <br />boilers, exhaust stacks or fugitive dust sources. Include any hazardous air pollutants <br />(consult EAW Guidelines for a listing) and any greenhouse gases (such as carbon <br />dioxide, methane, nitrous oxide) and ozone-depleting chemicals (chloro- <br />fluorocarbons, hydrofluorocarbons, perfluorocarbons or sulfur hexafluoride). Also <br />describe any proposed pollution prevention techniques and proposed air pollution <br />control devices. Describe the impacts on air quality. <br /> <br />Air emissions associated with the proposed gravel and peat mining operation are <br />associated with fugitive dust generated from excavation and conveying of gravel and <br />peat. <br /> <br />Fugitive particulate matter (PM) emissions will be generated from transporting the <br />aggregate from storage piles to the feed unit hoppers. Crushing operations may also <br />result in fugitive PM emissions. Diesel generators may be used to provide electricity. <br />Emissions from generators correlate to fuel usage and would include oxides of nitrogen <br />(NOx) and carbon monoxide (CO). Portable storage tanks may be used to store fuel oils, <br />and may be a source of volatile organic compound (VOC) emissions. Combustion <br />emissions will include carbon dioxide (CO2), water, NOx, oxides of sulfur (SOx) (if sulfur <br />is present in the fuel), CO, and VOCs, including small quantities of benzene, toluene, and <br />xylenes (hazardous air pollutants). <br /> <br />MPCA Air Quality Permits are required for sand and gravel mining operations and <br />asphalt plants depending on the size of the operation and the "potential to emit." The <br />Conditional Use Permit documents will indicate the need for air quality permits. Potential <br />to emit calculations will be performed and the proper permits will be obtained. <br /> <br />17 <br /> <br /> <br />