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22. 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. According to the air quality impact analysis completed by SBP Associates, Inc. (see Attachment 3), carbon monoxide (CO) levels are elevated near roadway intersections due to the emission of this pollutant from the vehicles idling and passing by the redevelopment area. The State of Minnesota has ambient CO standards that are designed to protect human health and the environment. The Standards are: . I-hour average: 30 parts per million (ppm); and . 8-hour average: 9 ppm. Concentrations near or above these levels are most likely to occur near intersections that have heavy traffic volumes and are severely congested. With the proposed area roadway improvements, severe congestion problems that could cause air quality problems are not expected to develop at the major intersections near the project. 23.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. Emissions from structures proposed at the site are not expected to be significant. 20