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Appendix B, continued identifies the land uses in the Twin Lakes Project Area which currently exist and are assumed not to be redeveloped by 2010. In order to estimate background conditions, only these land uses and their resultant trips were used to forecast 2011 traffic. The location of the sites identified can found on Figure 3 in the main body of the EA W. After revising the future land uses based on Tables Bl and B2, 2011 trips were generated and then distributed and assigned to the year Design Year 2011 model network. The proposed Twin Lakes Parkway was added to the network as a two lane boulevard from the existing I-3SW ramps at Cleveland Avenue North of County Road C to Snelling A venue, taking over what is now Terrace Drive. The proposed parkway intersects Mount Ridge Road, Arthur Avenue, Fairview Avenue and Snelling Avenue. The Snelling Avenue connection is planned as a right turn in/right turn out intersection. The Northbound exit loop from I-3SW to County Road C was removed from the network as well as Prior Avenue and Mount Ridge Road between proposed Twin Lakes Parkway and County Road C. Figure BS identifies the expected roadway changes in and around the Twin Lakes Project Area. The background traffic assigned to the 2011 road network comprises the forecast of background Average Daily Traffic (ADT). Background PM peak hour turning movement forecasts were developed by first applying a PM peak hour percentage of 10% to the ADT. This percentage was based on the relationship of existing PM peak hour turning movements and existing ADT found on Figures B2 and B3, respectively. The 10% ADT's were split out into PM peak hour turning movements using existing PM peak hour turning movements as a base. The 2011 background turning movements are shown on Figure B6. DeveloDment of Site Generated Traffic Forecasts Site generated traffic was established using the ITE Trio Generation Manual, Sth Edition (1991). First, the type and intensity of the land uses currently existing on parcels within the project area identified for (re )development was detennined. An estimation of daily and PM peak hour trips generated from the existing land uses on parcels identified for (re)development was made using trip generation rates from the ITE Trip Generation Manual, Sth Edition (1991). The generation totals can be found in Table B3. The totals were reduced by 10% to account for internal trips on the site. The ITE Trio Generation Manual, Sth Edition (1991) states that on site internal trips generally range from IS% to 4S%. The table shows that approximately 7,SOO daily trips and over 1,000 PM peak hour trips would be removed from the Twin Lakes Project Area due to (re )development. An estimation of trips to be added to the Twin Lakes Project Area because the proposed development and redevelopment was completed by applying trip generation rates from the HE Trio Generation Manual, Sth Edition (1991) to the proposed building footprints of the (re)development sites. (See Attachment "C" of EA W.) The resulting site generated traffic forecast of daily and PM peak hour trips can be found in Table B4. The table shows that approximately IS,SOO daily trips and 2,000 PM peak hour trips would be added to the Twin Lakes Project Area as a result of (re )development. The trip generation was reduced by 10% to account for internal trips on site. At this time, the City of Roseville projects that (re)development within the Twin Lakes Project Area will be office/showroom with a SO/SO split between office and showroom/warehouse land uses. Currently, no site plans exist for the parcels slated for redevelopment within the Twin Lakes Project Area. In order to generate trips and distribute and assign them to the surrounding roadway network, Parcels 1 to 30 (see Figure 3 in main body of EA W) were logically grouped into subareas based on size and whether or not they were adjacent to one another. The groupings are defined in Table B4. Parcels were grouped into subareas so that the combined square footage of the building footprint would fall within the range of 40,000 to 200,000 square *24397 58