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Frank Dunbar Senior Housing Proposal-Site Plan Issues February 16, 2001 Page 2 the site plan to eliminate most of the trail on the south side of the parking lot, and to provide a sidewalk/trail connection to the Brown Road trail and to the Highway 12 trail. The trail connection to the office building is not included because it now appears the office building will not involve uses the seniors will regularly want to visit. Frontage Road The original site plan included an access connection to the office building from Brown Road through the parking area of the senior housing building. The City's traffic engineer expressed significant concerns regarding routing the office building traffic through the senior housing parking lot, and suggested an efficient way of separating the frontage road from the parking area. A site plan was developed that appeared to make this frontage road work. Most recently,more detailed site planning work has shown that because of the grade in the area of the frontage road,retaining walls 10 feet in height would be needed along the entire southern edge of the frontage road. To eliminate the need for the retaining wall, the developer is again proposing to eliminate the frontage road in favor of again routing the office building traffic through the parking area of the senior housing building. A revised site plan reflecting this change has been forwarded to the City's traffic engineer for a review of its safety and workability. 1. Background regarding access needs. The key access parameters for the proposed development are as follows: a. Prohibit the creation of an additional left turn access on Highway 12. b. Provide left turn access to the senior housing building from the Brown Road/Highway 12 intersection. c. Provide right-in/right-out access on Highway 12 at a roadway directly south of the office building to serve both the senior housing building and the office building. d. A left turn access is needed to enable eastbound traffic to access the office building without making a U-turn at Brown Road and 12, and to enable traffic to exit the office building to go east. Under the current plan, this left turn access is at Brown Road and Highway 12, which is the correct location. However, this requires the traffic from the office building to pass in front of the senior housing building. This works very well if the traffic is using an access road that is separated from the parking area of the senior housing building. This does not work as well if the traffic is routed through the parking area of the senior housing building. It is preferable to separate the"through"traffic from the senior housing parking lot traffic.