Laserfiche WebLink
Zoning File #2195 <br />January 16, 1997 <br />Page 3 <br />Hardcovcr/Stormwater/Trce Removal Impacts <br />The hardcover impacts of the proposed building under the 3 stall and 10 stall alternatives are <br />summarized in the table below. These numbers do not include any hardcover which might occur as <br />a result of displaying boats on the green space east of the proposed building. <br />(East Side) <br />SITE <br />AREA <br />EXISTING <br />HARDCOVER <br />PROPOSED <br />HARDCOVER <br />3-STALL <br />ALTL:-^s'ATE <br />PROPOSED <br />HARDCOVER <br />10-STALL <br />ALTERNATE <br />0-75'69,044 s.f.23,854 s.f. <br />(34.55%) <br />23,215 s.f. <br />(33.62%) <br />25,630 s.f. <br />(37.12%) <br />75-250’12,176 s.f.9,003 s.f. <br />(73.94%) <br />8,916 s.f. <br />(73.23%) <br />8,926 s.f. <br />(73.31%) <br />'I he 10-staIl alternative results in a net 1,776 s f. increase in 0-75' hardcover, while the 3 stall <br />alternative results in a 639 s.f. reduction. With either alternative, hardcover in the 75-250' zone is <br />reduced bv about 80 s.f. <br />Both the 3-stall and 10-stall alternatives include significant expansion of the small existing storm <br />water pond in order to meet NURP standards. The area of the storm water pond is not considered <br />hardcover, but will result in the conversion of green space to an open water pond. The increase in <br />pond size will result in either case in the removal of 4-5 trees in 0-75' zone, and both proposed plans <br />indicate 2 new replacement trees in the pond area as replacement. Planning Commission should <br />consider whether additional vegetation replacement is required in this location. <br />The NURP standards were adopted as part of Orono's Comprehensive Plan a few years ago. and are <br />intended to provide for a high degree of phosphorus removal from storm water before it enters the <br />lake, in addition to removing suspended particles and debris. The ultimate efficiency of NURP <br />ponds is a function of their large size and permanent pool of standing water. The existing pond on <br />the site does not meet NURP criteria, and functions merely to remove sediment and debris from <br />storm water entering the lake. The City Engineer has suggested minor revisions to the grading plan <br />for the proposed stormwater pond. <br />Site Landscaping <br />As indicated in November, the proposed site plan shows existing and proposed landscaping <br />materials. Planning Commission should review the revised plans and determine whether additional <br />landscaping is necessary. <br />■i <br />L..