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24.0dors, noise and dust \ViJI the project generate odors, noise or dust during construction or during operation? lYes _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.) Dust and noise will be generated by equipment and machinery during construction. Odors may also be generated from construcrion equipment exhaust. Equipment will include trucks, backhoes, graders, compactors, excavators, bobcats, cranes, loaders, cornpressors, and possibly de-watering pumps. Dust may be controlled by dai Iy cleanup of the construction site: water will be used to wet appropriate surfaces to reduce airborne dust when necessary. Noise and odor impacts from construction equipment will be controlled by ensuring the equipment is properly muffled and in good working condition, and by restricting the hours of operation to daylight hours, or those permitted by local ordinances. The project proceeds through residential neighborhoods and is adjacent to numerous residential yards. Construction of the project is anticipated to occur in phases over a five- year period. Phases of construction in anyone area are expected to be completed over one construction season, approximately seven month.., (May through November). SSP Noise Impact Analysis SBP Associates, Inc. (SBP) conducted a traCfic noise monitoring and modeling analysis Cor the proposed downtown redevelopment; the report is provided in Attachment 3. The modeling analysis used the MNDOT Minnoise computer model and traffic predictions prepared by Bonestroo. Additionally, SBP conducted noise monitoring at t\VO location.., near the project site. Predicted D({ytillle Noise Lerel Discllssion The rbults indicate that the modeled residential building receptor locations are predicted to have noise levels within the State standard for the year 2012< Locations R3 and R6 (shown on Figure I of the noise analysis in Attachment 3) are al or above the standards vvith 2030 lraffic volumes. This indicates that there would be some speech interference from the traffic noise for persons outside on the street side of these buildings during 2030 peak traffic periods. The predicted Jloise level changes between the existing and year 2012 result from additional traffic generated by the development and by other area growth. The noise level increase for this period is predicted to be 3 dBA or less at all modeled receptor locations. The MPCA considers changes of 3 dBA or less to be imperceptible. 21