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air quality standards. Neither the EAW form nor the Guidelines have been updated to reflect this change in state law. Emission levels due to increases in site-generated traffzc are anticipated to remain within ihe Minnesota ambient air quality standards of 30 parts per million and 9 parts per million for one-hour and eight-hour time averages, respectively, for carbon monoxide (CO). Baseline air quality levels near the site have not been monitored and predictive air quality models have not been developed for this site as a result. However, based on the tra�c model SimTraffic, carfion monaxide emissions at the two study intersections most affected 6y new campus trips either decreased (by 60% at Lydia Avenue/College entrance) or marginally increased (by 6% at Lydia Avenue/Snel/ing Avenue) under the Year 2018 cumulative scenario with mitigation measures (cited under # 21) implemented, compared to 2018 background conditions. 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 EAW Guidelines for a listing) and any greenhouse gases (such as carbon dioxide, methane, nitrous oxide) and ozone-depleting chemicals (ch(oro-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. The only source of emissions would come from the existing powerhouse building which contains a centra/ heating and cooling system. This system operates on natural gas with an interruptible service program. This program allows for interruption of the provision o. f natural gas and the transfer to burning fuel oil until »atural gas supplies are replenished. Last year, nalural gas service ran uninterrupted. This year, service was interrupted jar five days where fuel oil was burned in place of natura! gas. No new permanent stationary sources of air emissions are proposed for this project. No hazardous air pollutants are anticipated including greenhouse gases or ozone-depleting chemicals. No permanent impacts on air guality are anticipated. 24. Odors, noise and dust. Will the project generate odors, noise or dust during construction or during operation? X Yes No If yes, describe sources, characteristics, duration, quantities or intensity and any proposed measures to mitigate adverse impacts. Also identify locations of nearby sensitive receptors and estimate impacts on them. Discuss potential impacts on human health or quality of life. (Note: fugitive dust generated by operations may be discussed at item 23 instead of here.) Odor problems are not anticipated with the proposed Project. The College has several policies in place to mitigate noise impacts from the campus. Campus curfews are in place to minimize noise generated by the residence halls and students on campus. Trash pick-up and deliveries are permitted only during acceptable operating hours according to City mning regulations. The announcement systems for the sports ftelds on campus operate on an intermittent basis. These facilities operate at standard levels for a public announcement system and the duration of these activities are related to the activities held at the sports fields. The MPCA has standard noise guideli��es which approzimate decibel levels for several noise sources. With decibel levels of conversationa! speech estimated at 60 dB, heavy truck traffic at 80 dB, a rock and roll concert at I20 dB, and a jet engine ai 140 dB. The public announcement system an campus would fa/1 within an approximate 90 dB level. While this level is high for the residential surrounding land uses, the distance to the surrounding ��esidential area and the duration of the noise factors into the overall noise impact. The noise generated from these facilities is a current condition. Completion of the project should not make a sign�icant change to the current noise impact to lhe surrounding areas considering the duration and Page 13