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TRAFFIC FORECASTS TRAFFIC FORECAST METHODOLOGY The 2001 p,m. peak hour background traffic volumes presented in the 1997 Centre Pointe Traffic Impact Study prepared by the BR W firm served as the basis for the current traffic forecasts. The 2001 background traffic volumes in the BRW study are based on counts conducted by the OSM firm in 1996, Barton-Aschman in 1994, and BRW in 1997. Also, the RoseviIle Traffic Model was used by the BRW firm to assist in establishing the 2001 background volumes. The 2001 background traffic volumes were then adjusted to reflect the 2004 forecast and analysis year and account for the following changes in traffic conditions between 2001 and 2004: · Increases in background traffic at a rate of two percent per year. This two-percent rate was used in the 1997 BRW study and is based on historical ADT volumes. · According to City staff: approximately 200,000 sq. ft of office will be constructed as part of the Twin Lakes development by the end of 2003. An EA W was prepared for the Twin Lakes development by the BR W firm in 1997. The trip generation associated with the 200,000 sq. ft. of office represents 16% of the total trip generation estimated for the Twin Lakes development when complete in 2010. To account for the completed portion of the Twin Lakes development in the current traffic forecasts, 16% of the total site generated traffic was added to the roadway system using the distribution from the 1997 Twin Lakes EAW. · Construction of Twin Lakes Parkway is anticipated in 2002 and 2003. Slight changes in traffic patterns are expected with the J',vailability of this new route and have been estimated for the 2004 analysis year, using the 2011 background traffic forecasts for the p.m. peak hour in the Twin Lakes EA W. The 2011 background traffic volumes were based on the Roseville Traffic Model by the BRW firm. Centre Paiute Business Parle -8- Janwuy IS, 2001