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f <br />The proposed Creekside in Orono is a 20-acre site consisting of 7 residential lots <br />consisting of a 24-foot wide bituminous street with curb and gutter and storm sewer. The <br />houses and street will drain to catch basins in the proposed street and then to the proposed <br />pond. The pond has been sized to not exceed the existing 1-year and 100-year outflow <br />rates for the site. Dead storage is provided for the 2.5 ” design storm. <br />Cmently on the site is an approximate 2,400 square foot foundation single family home <br />with a gravel arid bituminous driveway to the house. An approximate 1,200 square foot <br />accessory building is also located on the site. Wetlands are located along the south, east, <br />md north veas of the site. Long Lake Creek runs along the south part of . he site. Soils * <br />identified in the SCS soil survey are predominately Hamel Loam, Lester Loam, and <br />Marsh. The majority of the current drainage is to the wetlands and to Long Lake Creek. <br />Brown Road is west of the site and Luce Line Trail is south of the site. <br />Two subcatchments were modeled for the proposed conditions. One subcatchment is for <br />the proposed street and houses. This subcatchment is routed to the proposed pond. The <br />second subcatchment is for the back of the bouse pads and the unchanged areas of the <br />site. This subcatchment is routed directly to the existing wetland. <br />The following summarizes the results: <br />1-yr. (2.30 in.)100-yr. (5.90 in.) <br />EXISTING 0.99 cfs 14.16 cfs <br />PROPOSED 0.79 cfs 13.73 cfs <br />Pond Normal Water Level - 937,50 <br />■pond 100-yeaf olev&itdd * 939.00 <br />Pond 1-year elevation - 937,16 <br />Attached are the associated hydrology calculations and drainage area maps for Creekside <br />in Orono. <br />JX O io <br />P:Simd4Q§§id^\MMP6k7t€f9^^ i. CV <br />I