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<br />John Stark, Community Development Director <br />City ofRoseville <br /> <br />November 17,2006 <br />Page 28 <br /> <br />o Support and Promote Bicycling and Walking as Alternatives <br />o Support Transit as an Alternative <br />o Support and Promote Car and Vanpooling <br />o Provision ofInformation on Transportation Alternatives <br />o Provision of Advanced Communication Technologies <br />o Vehicular Traffic Movement & Access Restriction <br />o Participate with Regional TDM Organizations <br />o Monitor Action Implementation and Goal Achievement <br /> <br />Vehicle-Related Air Quality Analysis <br /> <br />. Predicted CO concentrations at the intersection of County Road C/Fairview Avenue and <br />County Road C/Snelling Avenue will be below state standards after completion ofthe project <br />in year 2030. Because these intersections are the two worst case intersections in terms of <br />level of service and total delay, CO concentrations at other intersections in the study area <br />would likely be lower than those predicted at the analyzed intersections. <br /> <br />Vehicle-Related Noise Analysis <br /> <br />. Noise levels currently exceed State daytime and nighttime noise standards at all three <br />modeled receptor locations (existing year 2006). Traffic noise levels will increase from one <br />to four dBA from existing (year 2006) to year 2030 Scenario IA build conditions; whereas, <br />some areas are anticipated to experience no change in traffic noise levels from existing (year <br />2006) to year 2030 Scenario 1 B build conditions. <br /> <br />. Future traffic noise levels are anticipated to be similar between the two redevelopment <br />alternatives. Traffic noise levels are anticipated to be the same or one dBA greater nnder <br />redevelopment Scenario IA. The largest increase in traffic noise was observed at Receptor 3 <br />under year 2030 Scenario lA build conditions. Receptor 3 was estimated to have a three <br />dBA (nighttime LJo) and four dBA (nighttime Lso) increase from existing to build conditions <br />under redevelopment Scenario IA. A three dBA change is barely perceptible to the human <br />ear; a five dBA change is noticeable. Please recall that the nighttime peak hour traffic is <br />generally from 6:00 a.m. to 7:00 a.m., just prior to the morning rush hour. The noise analysis <br />results presented represent the worst-case potential noise scenario. <br /> <br />. The Twin Lakes AUAR adjacent roadways (e.g., Fairview Avenue, Cleveland Avenue) are <br />City or County roads without full control of access (e.g., direct driveway connections) and <br />are exempt from State noise standards per Minnesota Statute. Therefore, no traffic noise <br />mitigation is proposed. <br /> <br />H:\Projects\5895\TS\Report\5895 Twin Lakes ADAR.doc <br />