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.� PUBLIC INFRASTRUCTURE: 6.4 The proposal for Twin Lakes Phase 1 includes many road improvements and some road right- of-way vacations. The primary road extension is Tercace Drive (to be known as Twin Lakes Parkway) within dedicated right-of ways. The Parkway is envisioned to be a 60 to 120 foot wide road right of way primarily with two wide lanes and a median with left turn lanes. In residential areas, the roadway may be more narrow to reflect the residential character of that portion of the site. Parallel street parking areas may be designated along one side of portions of the 32 foot wide residential street. Mt Ridge Road, north of the Parkway, and Prior Avenue, within a 55 to 80 foot right of way, would intersect with the Parkway at the primary intersection (Prior at the Parkway). A four way intersection with a 4 way stop or a round-about is proposed to slow traffic and facilitate safer turning movements. Where Prior Road meets County Road C, w 4 way signalized intersection has been planned by the County. Other potential new 4 way stoplights could be installed at Fairview and the Parkway and at C-2 and Cleveland. Further to the east, existing Arthur Street would be reconfigured to provide another intersection with the Parkway. Portions of Iona Lane, Prior Avenue and Mt. Ridge Road would no longer be needed for public road and could be vacated. Mass transit (bus service) routes and stops will be coordinated with Metro Transit. Where the Parkway\Terrace Drive meets Snelling a right-in, right out intersection will be requested from MnDOT, 6.5 There is existing capacity for underground utilities. All public utilities (sanitary sewer, water � main, and storm sewer) will either be constructed within a separate public easement or within the right-of-way and/or under the constructed roadway. Sanitary sewer will be provided from an existing 36" sanitary sewer line along the south edge of the lake. Water will be provided from the main line that will be looped along the Parkway, from Cleveland to Fairview completing the necessary water loop. Storm sewer catch basins will be provided within the concrete gutters. Storm water will be routed to multiple ponds, not directly into the Lake. Drainage will be evenly split (40+ acres each) into two watersheds, to the east and north in Lake watershed and to the west and north in the 35W watershed. Impervious surface will actually decrease from 78% to approximately 70% and all will be routed to new or existing ponds. Water and sanitary sewer for the townhomes will be provided from the main line installed within the roadway of the new streets. Existing pavement surfaces will be recycled on the site. By comparison of sheet drainage from truck terminal pavements, using new ponds in addition to the existing ponding system will improve water quality in the Lake, as it did with the storm pond created adj acent to the southeast comer of the Lake. 6.6 The remaining utilities, such as electricity, cable, telephone, and natural gas, will be designed and coordinatedthrough the Public Works Departmentto be underground, and utilize a joint trenching system where applicable. Further, all transformers must be identified on a plan, prior to final approval, so that adjustments to proposed locations can be sought to eliminate possible unsightly locations. 6.7 Rottlund Companies met with the Public Works and Transportation Commission on September � PF3595 — RCA Concept Plan and PrelimPlat Approval - 102504 Page 10