6.1. SR 03-17-2003 - Laserfiche WebLink

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22. 23. Additionally, potential traffic issues on Trunk Highway 169 will addressed by the MnDOT requirements of constructing auxiliary northbound and southbound lanes located on the shoulders of Trunk Highway 169 between 217th Avenue and 219th Avenue. All drivers will be instructed to travel in the auxiliary lanes only. Truck traffic generated by the gravel mine will also be limited to the 1,000 foot stretch between 219th Avenue and 217th Avenue as the drivers travel from the gravel mine to a local asphalt plant and back. Vehicle-Related Air Emissions: Estimate the effect of the project's traffic generation on air quality, including carbon monoxide levels. Discuss the effect of traffic improvements or other mitigation measures on air quality impacts. Note: If the project involves 500 or more parking spaces, consult EA W Guidelines about whether a detailed air quality analysis is needed. As discussed in Item 21 above, the proposed project is not anticipated to cause traffic congestion on nearby roadways. Therefore, the project is not anticipated to significantly decrease air quality in the area. Stationary Source Air Emissions: Describe the type, sources, quantities and compositions of any emissions from stationary sources of air emissions such as boilers, exhaust stacks or fugitive dust sources. Include any hazardous air pollutants (consult EA W Guidelines for a listing) and any greenhouse gases (such as carbon dioxide, methane, nitrous oxide) and ozone-depleting chemicals (chloro-fluorocarbons, hydrofluorocarbons, perfluorocarbons or sulfur hexafluoride). Also describe any proposed pollution prevention techniques and proposed air pollution control devices. Describe the impacts on air quality. Air emissions associated with the proposed gravel mining operation are associated with fugitive dust generated from excavation and conveying of gravel. Air emissions associated with the portable asphalt plant include fugitive emissions from material handling, emissions from generators and storage tanks, and process emissions. Fugitive particulate matter (PM) emissions will be generated from transporting the aggregate from storage piles to the feed unit hoppers and from the hoppers to the dryer. Crushing operations may also result in fugitive PM emissions. Diesel generators may be used to provide electricity. Emissions from generators correlate to fuel usage and would include oxides of nitrogen (NOx) and carbon monoxide (CO). Portable storage tanks may be used to store fuel oils, heated liquid asphalts, and/or asphalt cement and may be a source of volatile organic compound (VOC) emissions. The most si~ificant source of emissions from the portable asphalt plant will be the dryer. Combustion emissions will include carbon dioxide (CO2), water, NO×, oxides of sulfur (SOx) (if sulfur is present in the fuel), CO, and VOCs, including small quantities of benzene, toluene, and xylenes (hazardous air pollutants). In addition to combustion emissions, dryer emissions include · Jan-2003 · LIESCH ASSOCIATES, INC. Hydrogeologists o Engineers - Environmental Scientists · Page 17 -