08/13/1997 P&Z Minutes - Laserfiche WebLink

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Planning & Zoning Board August 13, 1997 Page 8 deems the land use and varied setbacks to be acceptable, he would recommend approval of the preliminary plat, subject to the conditions stated in the staff report. Mr. John Hagen, Consulting Engineer, SEH, stated that he completed an analysis of the traffic impact of the proposed development during the day and at peak hours for 77th Street and 79th Street. Access to the development is on 79th Street, Marilyn Drive and Lois Lane. Based on the type of dwelling units shown and the Manual of the Institute of Transportation Engineers, the estimated total daily trips is 1,450. He would predict that peak hour traffic will correspond to adjacent roadways. In the a.m. peak hour, 110 trips per day are anticipated. The p.m. peak hour estimate is 146 trips. Approximately 75 percent of the traffic will enter and exit the development on 79th Street; 23 percent on Marilyn Drive and 2 percent from Lois Lane. Turning movements were monitored on August 6 and 7 at the intersections of Lake Drive and 77th Street; Lake Drive and 79th Street. With the new development, it is projected that 2,002 turning movements per day will occur. Operational issues were reviewed which relate to the level of service (LOS) rating of the efficiency of the intersection, which is based on the average stop delay per vehicle. The ratings are A through F, A being the most efficient. Both intersections were found to be operating at an LOS of A. It is projected that by the year 2002, with the proposed development, the LOS of both intersections will remain at A. However, at peak traffic hours, the LOS would be C. Without the proposed development, the LOS would be B at peak hours. The same projections were found without the proposed development. Therefore, no significant traffic impact or road improvements are anticipated. Mr. Dunn asked if this analysis takes into consideration the cumulative effect of other development occurring along Lake Drive. Mr. Ahrens responded that at the time of the study, there were no other developments. Mr. Herr asked whether the traffic study would be altered if the proposed development were all single family homes. Mr. Hagen stated that a totally single family development would generate more traffic than the housing unit breakdown being proposed. Single family houses generate 10 trips per day on average. Multi - family housing generates an average of 7 or 8 trips per day. The reason is that multi - family housing will have one trash hauler for the development as opposed to a trash hauler for each house. Also, many single people or people without children live in multi - family units. Mr. Kevin Murphy, 583 Lois Lane, stated that he believes the LOS rating of A is meaningless because nobody cares at 10:30 a.m. What matters is how the traffic functions at peak times. He can see residents from Mardon Acres using Lois Lane if it is opened to the Highland development to get to Lake Drive. Since Lois Lane is a dead end road now, he would prefer that it not be opened to cross traffic to neighboring developments. There has been a recent increase in crime, and opening Lois Lane would give criminals an easy access to homes. Ms. Cindy Brunberg stated that she lives on Nancy Drive. She was notified approximately eight months ago that this project is contingent upon City sewer and water. She asked if City sewer and water have been approved to be constructed. • • •