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2007-11-14 CC Packet
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2007-11-14 CC Packet
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<br />Main Street corridor will provide overall satisfactory LOS results. Some individual <br />movements at two intersections are expected to operate at LOS E or F. However, no <br />additional mitigation is proposed because: <br /> <br />· Relatively few vehicles are expected for those movements <br />· A traffic signal at the Progress Road and Dupre Road intersections would not be <br />warranted <br />· Lower LOS results for side-street stop controlled movements are not uncommon <br />· Progress Road traffic has the option of shifting to the signalized intersection at <br />Main Street and Centerville Road <br /> <br />Although overall satisfactory LOS are expected to be provided, safety improvements to <br />the Main Street corridor are recommended. These improvements will retain the flexibility <br />for different left turn phasing, allowing the signal to adapt to changing traffic flows and <br />patterns. The changes will also improve the LOS for some individual movements. The <br />alternative improvements recommended include: <br /> <br />· Providing an exclusive northbound left turn lane at the intersection of Main Street <br />and Centerville Road instead of an exclusive right turn lane <br />· Adding a southbound left turn lane at the intersection of Main Street and <br />Centerville Road <br />· Adding a southbound right turn lane at the intersection of Main Street and <br />Progress Road <br /> <br />The results and recommendations for 2030 are similar with or without the proposed <br />development. <br /> <br />The exact timing for a traffic signal at the intersection of Main Street and Centerville <br />Road will depend upon actual traffic conditions. The intersection and its volumes should <br />be monitored to detennine the appropriate timing of installation and ensuring that a <br />traffic signal system is wananted and j usti tied. <br /> <br />22. Vehicle-related air emissions <br /> <br />Estimate the effect of the project's traffic generation on air quality, including <br />carbon monoxide levels. Discuss the effect of traffic improvements or other <br />mitigation measures on air quality impacts. Note: If the project involves 500 or <br />more parking spaces, consult EA W Guidelines about whether a detailed air quality <br />analysis is needed. <br /> <br />According to the air quality impact analysis completed by SBP Associates, Inc. (see <br />AttachmentJ), carbon monoxide (CO) levels are elevated near roadway intersections due <br />to the emission of this pollutant from the vehicles idling and passing by the <br />redevelopment area. The State of Minnesota has ambient CO standards that are designed <br />to protect human health and the environment. The Standards are: <br /> <br />20 <br />
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