Agenda - Parks and Recreation Commission - 08/09/2001

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Preliminary Plat Review: Centex Addition July 5,2001 Page 2 of 5 Dens]w: The subject property is 74.37 acres and the net densitY is 2.08 un/ts per acre. Streets: The proposed plat provides two accesses to the south (Xlcimo Street and Waco Street) onto Alpine Drive (aka 153,d Avenue); Yakima Street will be ex-tended north to provide a through street to 156t" Lane. These three accesses are anticipated to.hanclle most of the trips generated by the new proposed subdivision since ,Mpine Drive and 156th Lane are collector streets. The plat proposes three additional connections w/th existing adjacent streets at 155~' Lane, Waco Street, and Ute Street. These streets w/Il provide connections to adjacent neighborhoods for local trips and flexibility, for emergency situations. City Code restricts cul-de-sacs to 600 feet in length. All of the cul-de-sacs, with the le~t), meet this standard. A modification or exception of the Yak/ma Street cul-de-sac (655 -' o vm-iance to cul-de-sac length will be required. UtiliTy Plan: The plat Will be se~ed by municipal water and sanitary sewer. A utility plan has been submitted and is generally acceptable. Water must be looped on A.lpine Drive (153r~ Lane N.W.) and connected to the west and east. A lift station is being proposed to service a portion of the subdivision. This review is not an approval of the elevation proposed on the plan. A review is underway to determine whether the sewer should be constructed deeper in order to service a larger area. Grad]n2 and Draina_oe: The subdivision proposes to drain to the center of the plat and provide an overflow to the Rm-n River to the east through Bear Park, south of Salish Street. The 1997 Sronm Water Management Study proposes the outlet to be rUn on 156th Lane N.W. The intent being to pick up the low areas in the parks west of Yakima Street and south of 15dt~ Lane N.W. An alignment to the Rum R/ver for the overflow should consider these goals. Also, as part of the Stormwater Management Plan, there is a provision to provide an overflow storm sewer along Alpine Drive (153r~ Avenue N.W.) to drain lowland east of Ute STreet and south of Alpine Drive (153rd). This overflow should be completed with th.is subdivision as a portion of the pipework would be in the plat. A Lower Rum River Water Management Organization (LP,_RV~rMO) permit will be required for this plat. 'The presence and protecti'on of wet~,lands must be identified as part of the LP,_RWMO pemzirdng process. The proposed building elevations must be shown on the grading plan and must be a minimum of two (2) feet above the 100 year flood elevation.