Agenda - Planning Commission - 04/05/2007

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Hack Center: Preliminary Site Plan Review March 30, 2007 Page 40f5 Loading Docks: The site plan shows 2 loading docks for the main building: one on ihe southern end, which will serve the primary tenant in this building, and another dock in the middle of the building off of 138'" Avenne NW, which will service the retail spaces that front on Highway 10, Both loading docks are fully enclosed, and all loading and unloading will occur interior to the building. It appears that the loading dock located at Jaspar Street and 138'" Avenue will require backing into Jaspar Street or 138 Ave either for ingress or egress. This location 'Will also attract truck traffic on 138th Avenue. through the residential development. Staff would recommend that this loading dock be relocated, perhaps adjacent to the depressed dock on the southeast comer of the building. If this is not possible staff would like to explore options for minimizing the' impact of the middle loading dock on the adjacent townhomes. Such options might include limiting the hours for which this dock is available for loading or unloading Drainage and Grading: Surface water runoff from impervious areas are proposed to be controlled through the use of concrete curb and gutter, catch basins, and storm sewer pipes to convey storm water to water quality basins constructed on site. These' basins will provide rate control and water quality treatment. One basin is located on the southwest comer of the site and the other is a split basin located along the northeast and northwest corners of the site connected vvith. a 48 inch corrugated metal pipe. Both basins discharge into an existing storm water manhole located au the Village Bank property, This storm manhole also handles the discharge from the Village Sank property into the public storm sewer located in Riverdale Drive. Staff has reviewed the preliminary grading and erosion control plan and offers the following comments: . Grades on bituminous flatter than 1 % are difficult to achieve. Staff suggests the addition of catch basins into the concrete curb particularly surrounding building A in lieu of the rej ect curbing proposed. . The discharge into the manhole on the Village Bank property will require permission from that property since the connecting pipes and construction will fall outside public drainage and utility easements . The stormwater calculations must be submitted to the Lower Rum River Water Management Organization (LRRWlv10) for review and approval. A permit must be obtained from the LRRWMO, Access: Two accesses are proposed onto Riverdale Drive. The easterly access lines up with 139tb Avenue south of Riverdale Drive. The westernmost access is located vvithin. 120 feet from the Village Bank access which is less than desirable. It is suggested that a common access with Village bank be investigated. If this is not feasible the westernmost access should be moved as far east as possible and should be narrowed to 31 feet in vvidth to encourage traffic to prefer the eastern access point. Sewer and Water Trunk Charges: Trunk charges will be assessed as part of the plat for the Hack Center, 40