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<br />h BackQround <br /> <br />The project site IS located in the southeast quadrant of the intersection of Lexington Avenue <br />and Roselawn Avenue in the City of Roseville. The site is in the Central Ramsey Watershed <br />Management Organization (CRWMO) jurisdiction. <br /> <br />A previous analysis and report was prepared on February 3, 1996, for this site with a <br />different building and parking lot configuration. The building and parking areas have been <br />modified from the February submittal and this analysis and report presents the revised <br />calculations for the ponding area and outlet system for the revised plan. <br /> <br />Iotal Site Area: <br />Deductions: <br />Lexington Avenue Easement: 8,711 s.f. = <br />Roselawn Avenue Easement: 10,797 s.f. = <br />r Proposed Additional Lexington Avenue Easement: 3,811 s.t. = <br /> <br />/ Net Site Area Excluding Public Streets: 71,761 s.f. - <br /> <br />~~ The stormwater management requirements for the CRWMO are: <br /> <br /> <br />I with a maximum outlet rate not to exceed the runoff rate for the 10 year <br />, 01- . rainfall event on the site; <br /> <br />.?' 2. <br />~ <br /> <br />95.080 s,f. <br /> <br />- <br /> <br />2.18 acres <br /> <br />0.20 acres <br />0.25 acres <br />0.08 acres <br /> <br />1.65 acres <br /> <br />Provide erosion control and containment during construction through the use <br />of inlet protection, silt fence or straw bale erosion control barriers, and <br />temporary rock-dam construction entrance. <br /> <br />!1. Runoff from a 10 Year Rainfall Event <br /> <br />Proposed Site: <br /> <br />Total Area: <br />T otallmpervious Area: <br />Total Turf and Landscape Area; <br /> <br />1.65 acres <br />1.11 acres <br />0.54 acres <br /> <br />)f' <br /> <br />Runoff Curve Number: <br /> <br />Soils: Silty sand, some wi gravel in fill <br />Generally, natural soils are fine to medium <br />grained sands. SCS Soils Maps show "urban land" <br />Waukegon soils....SCS Type B. <br />