CCP 02-19-2002 - Laserfiche WebLink

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Gateway Business Center - Arden Hills. MN EAW September 2001 If the project is within lhe Twin Cities metropolitan area, discuss its impact on the regional _ transportation system: .. Impacts to the regional transportation system (I-35W and Highway 10) will be negligible in the year after buildout (2003), as indicated by the satisfactory level of service along County Road 96. 22. Vehicle-Related Air Emissions. Estimate the effect of the project's traffic generation on air quality, including carbon monoxide levels. Discuss the effect of traffic improvements or other mitigation measures on air quality impacts. Note: If the project involves 500 or more parking spaces, consult EAW Guidelines aboul whether a detailed air quality analysis is needed. Project Impact Carbon monoxide (CO) levels are elevated near roadway intersections due to the emission of this pollutant from the vehicles idling and passing by, The State of Minnesota has ambient CO standards that are designed to protect human health and the environment. The Standards are: . I-hour average: 30 parts per million (ppm); and . 8-hour average: 9 ppm, Concentrations near or above these levels are most likely to occur near intersections that are severely congested (Levels of Service (LOS) E or F). The primary intersection serving this proposed development is the intersection of CSAH 96 and Round Lake Road, . An analysis of this intersection, as summarized in Section21, demonstrated that the intersection will be operating at LOS B during the peak traffic hour under the more intensive development range, Therefore, no air quality problems are anticipated with an office development between 225,000 and 495,000 square feet GFA at this site. 495,000 The MPCA does not typically require an air quality modeling analysis (for EA Ws or ISPs) for intersections with a Level of Serviee of C or better one year after project development. Air quality problems related to earbon monoxide emissions typically only develop near intersections with congestion problems, Level of Service at the affeeted intersections surrounding this development will be B or better after project development. No congestion problems are anticipated, Indirect Source Permit The majority of Minnesota Rules Chapter 7023, which required certain projects that increased traffic on local roadways to obtain an Indirect Source Permit (ISP) from the Minnesota Pollution Control Agency (MPCA) prior to the commencement of construction, was repealed as of July 1,2001. The permit would have only been granted if post-development compliance with State air quality and noise standards had been demonstrated, and if funding was assured for any roadway improvements necessary to achieve compliance. e Page 24