Laserfiche WebLink
represent worst-case daytime conditions. The results of the MINNOISE models are ' <br />shown in Table 24-4. <br />Table 24-4: Daytime Modeline Results <br />1 67.0 55.9 68.7 58.5 68.9 58.8 69.0 58.9 69.1 59.1 <br />2 71.5 63.4 71.6 63.6 73.1 65.7 74.0 66.9 74.7 67.8 <br />3 73.2 64.1 73.2 64.2 74.8 66.4 75.7 67.6 76.4 68.5 <br />State <br />Standards <br />(daytime) <br />65 <br />60 <br />65 <br />60 <br />65 <br />60 <br />65 <br />60 <br />65 <br />60 <br />Numbers that are bold indicate that the modeled sound levels exceed State standards <br />The model results indicate that the project will have a traffic noise impact. The <br />model predicts that State noise standards will be exceeded during daytime hours at <br />all three modeled receptor locations. Anticipated Lio traffic volume in each of the <br />three development scenarios increases from 1 to 4 dBA over the No Build scenario. <br />It is not uncommon for noise levels to exceed the State noise standards at sensitive <br />noise receptors adjacent to major roadways similar to those in the project area. <br />Therefore, noise abatement measures should be considered to minimize the noise <br />impact associated with each of the development scenarios. <br />Dust <br />During construction, particulate emissions will temporarily increase due to the <br />generation of fugitive dust. Construction dust and exhaust from construction <br />equipment may have a temporary impact on air quality. Carbon monoxide and <br />other vehicle-related pollutants may also increase in areas under construction due <br />to reductions in traffic capacity, lane closures, and other construction-related <br />delays. <br />Most construction equipment would be diesel-powered, so carbon monoxide <br />emissions from the equipment should be minimal. Wetting areas under <br />construction will control fugitive dust. After construction is complete, dust levels <br />are anticipated to be minimal because all soil surfaces would be in permanent cover <br />(i.e., pavement or grassed areas). <br />Odors <br />The construction and/or operation of this project are not anticipated to involve any <br />processes that would generate any odors. <br />Odors. Noise. and Dust Mitigation Plan <br />• Construction dust control shall be incompliance with the National Ambient Air <br />Quality Standards (NAAQS) at the site boundaries. <br />• The City limits construction activities to 6:OOAM to 9:OOPM. Construction in the <br />study area will be required to meet these standards. <br />City of Elk River <br />Draft Alternative Urban Areawide Review <br />July 2011 <br />Page 78 of 84 <br />