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Attachment A <br />experienced currently. No projectrelated vapor plumes or glare from intense lights are <br />anticipated. Novisual impacts have been identified. <br />16.Air <br />a.Stationary Source Emissions – Describe the type, sources, quantities, and compositions of <br />any emissions from stationary sources such as boilers or exhaust stacks. Include any <br />hazardous air pollutants, criteria pollutants, and any greenhouse gases. Discuss effects to <br />air quality including any sensitive receptors, human health, or applicable regulatory <br />criteria. Include a discussion of any methods used to assess the project’s effect on air <br />quality and the results of that assessment. Identify pollution control equipment and other <br />measures that will be taken to avoid, minimize, or mitigate adverse effects from <br />stationary source emissions. <br />No stationary source air emissions are anticipated; therefore, no mitigation is required. <br />The heating and cooling systems for the development are still beingdesigned. No <br />significant impacts are anticipated from the typical residential/commercial systems that <br />would provide heating and cooling for the proposed development. <br />b.Vehicle Emissions – Describe the effect of the project’s traffic generation on air emissions. <br />Discuss the project’s vehicle-related emissions effect on air quality. Identify measures <br />(e.g., traffic operational improvements, diesel idling minimization plan) that will be taken <br />to minimize or mitigate vehicle-related emissions. <br />Typical of most developments, the proposed project would generate air pollution as a <br />result of increased motor vehicle activity. Motor vehicles emit a variety of air pollutants <br />including carbon monoxide (CO), hydrocarbons, nitrogen oxides, and particulates. The <br />primary pollutant of concern is CO, which is a byproduct of the combustion process of <br />motor vehicles. CO concentrations are generally highest in the vicinity of signalized <br />intersections where vehicles are delayed and emitting CO. Generally, concentrations <br />approaching state air quality standards are found within about 100 feet of a roadway <br />source. Further from the road, the CO in the air is dispersed by the wind such that <br />concentrations rapidly decrease. <br />The Minnesota Department of Transportation (MnDOT) has developed a screening <br />method designed to identify intersections that will cause a CO impact above state <br />standards. MnDOT has demonstrated that even the 10 highest traffic volume <br />intersections in the Twin Cities do not experience CO impacts. Therefore, intersections <br />with traffic volumes lower than these 10 highest intersections will not cause a CO impact <br />above state standards. MnDOT’s screening method demonstrates that intersections with <br />total daily approaching traffic volumes below 82,300 vehicles per day will not have the <br />potential for causing CO air pollution problems. None of the intersectionsin the study <br />area exceed the criteria that would lead to a violation of the air quality standards.Table <br />8below identifies the current AADT’s for the intersections surrounding the project site. <br />Twin Lakes Station17 March 2020 <br /> <br />