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2007-11-14 CC Packet
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2007-11-14 CC Packet
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<br />SBP Noise Impact Analysis <br />SBP Associates, Inc. (SBP) conducted a traffic noise monitoring and modeling analysis <br />for the proposed downtown redevelopment; the report is provided in Attachment 3. The <br />modeling analysis used the MNDOT Minnoise computer model and traffic predictions <br />prepared by Bonestroo. Additionally, SBP conducted noise monitoring at two locations <br />near the project site. <br /> <br />Predicted Daytime Noise Level Discussion <br />The results indicate that the modeled residential building receptor locations are predicted <br />to have noise levels within the State standard for the year 2012. Locations R3 and R6 <br />(shown on Figure 1 of the noise analysis in Attachment 3) are at or above the standards <br />with 2030 traffic volumes. This indicates that there would be some speech interference <br />from the traffic noise for persons outside on the street side of these buildings during 2030 <br />peak traffic periods. <br /> <br />The predicted noise level changes between the existing and year 2012 result from <br />additional traffic generated by the development and by other area growth. The noise level <br />increase for this period is predicted to be 3 dBA or less at all modeled receptor locations. <br />The MPCA considers changes of 3 dBA or less to be imperceptible. <br /> <br />Predicted Nighttime Noise Level Discussion <br />Table 2 of the noise analysis (provided in Attachment 3) indicates that all modeled <br />residential receptor locations, except location R7, would have nighttime traffic noise <br />levels above the Minnesota standard for modeled years 2012 and 2030. This standard is <br />based on sleep interference for people sleeping in bedrooms with partially open windows. <br />Residences in these areas should have year-round climate control and should be <br />constmcted to achieve an outdoor-to-indoor noise level reduction of 30 dBA. <br /> <br />25.Nearby resources <br /> <br />Are any of the following resources on or in proximity to the site? <br /> <br />Archaeological, historical or architectural resources? _X_Yes _No <br />Prime or unique farmlands or land within an agricultural preserve? _X_Yes No <br />Designated parks, recreation areas or trails? _X_Yes No <br />Scenic views and vistas? Yes _X_No <br />Other unique resources? _Yes _X_No <br /> <br />If yes, describe the resource and identify any project-related impacts on the <br />resource. Describe any measures to minimize or avoid adverse impacts. <br /> <br />a) Archaeol02ical, Historical, or Architectural resources <br />The Minnesota Historical Society State Historic Preservation Office (SHPO) was <br />contacted regarding the presence of documented cultural resource sites within the project <br />area. According to the response received (see Attachment 4) numerous sites were <br /> <br />22 <br />
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