11-15-1993 Planning PacketC - Laserfiche WebLink

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Orono Property P.U.D. Submittal 5 November 1993 Municipal sewer and water service to the site would be provided by extension ot water and sewer mains from the existing facilities along Highway 12. It is proposed to extend the water and sewer mains along the w'est side of Willow Drive to the site and then within the proposed streets r.o.w. within the site as required to service the proposed lots. Based on discussions with the City Engineer, the municipal water system has adequate capacity to service the site. Temporary capacity is available in the sanitary sewer on Highway 12 to service the site. However, ultimately a new trunk sewer wi e necessary on Highway 12 extending to the Long Lake treatment plan. The trunk sewer assessments paid by the proposed development would fund a portion of this trunk sewer. Stormwater Management The stormwater runoff from the proposed streets and the front yards would be conveyed by storm sewer to stormwater management basins for treatment and rate control. The majority of the lots are walkout type lots which back up to wetland areas. The rear yards would drain toward these wetlands with the grasses filtering the ^water and wetland protection enhanced by creating a natural buffer at the wetland edge. Because of the extensive onsite ponding, the project may not need the pond being proposed by MnDOT along Highway 12. —' Site Grading The site is relatively flat with the ground water table close to the surface. In general, the basement levels of the walkout homes would be established close to the existing ground elevation. The front yards and streets would be filled to create conventional walkout type lots. Some of the fill is obtained from excavation of the stormwater ^.basins and lowering of the ground elevation in the northeast comer of the site. Also, ? cooperative grading with the school property to the west is being sought to help | balance both sites, develop ponds as needed, and prepare areas for athletic fields. 3.Traffic Access & Circulation The road system has been developed to best facilitate the movement of traffic safely and conveniently in accordance with the City’s designated road system. Primary access to the dev flopment will be through a north to east collector connecting C.S.A.H. 6 and Willow D.'ive North. The road system is designated to identify a hierarchy of traffic with cul-dt sacs running into this collector. A private drive is -i ' proposed for three lots to minimize the impact on the woods. " f ?