09-25-2013 Council Agenda - Laserfiche WebLink

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concentrates in the existing concrete curb and gutter. The curb and gutter conveys the runoff to a set of catch basins near the east end of Viking Drive. This storm system discharges directly into the MnDOT ditch system along Highway 36. Drainage Area 4 lies within the Lake Gervais subwatershed. • Existing Drainage Area 5 — 7.73 Acres Drainage area 5 represents all of Desoto Street along with the majority of the surrounding properties. Runoff in this area generally flows overland until it reaches the street section. Runoff is the channeled along the edge of the road, flows to the north, and is captured by a set of catch - basins near the intersection with Lark Avenue. Runoff is then conveyed to the north through a series of pipes to the MnDOT ditch system along Highway 36. Drainage Area 5 lies within the Lake Gervais subwatershed. • Existing Drainage Area 6 — 12.73 Acres Drainage Area 6 represents all of Burr Street, Hendry Place, Highway Drive, and approximately half of Sunrise Drive. It also encompasses the majority of the residential properties surrounding these streets. Runoff in this area generally flows overland until it reaches the street section. Runoff is then channeled along the edge of the road, flows to the northwest, and is captured by a set of catch - basins near the intersection of Burr Street and Highway Drive. Runoff is then conveyed to the north through a series of pipes to the MnDOT ditch system along Highway 36. Drainage Area 6 lies within the Lake Gervais subwatershed. • Existing Drainage Area 7 — 4.47 Acres Drainage Area 7 represents the southernmost portions of Sunrise Drive along with the surrounding residential properties. Runoff in this area generally flows overland until it reaches the street section. Runoff is then channeled along the edge of the road, flows to the south, and is captured by a set of catch - basins near the intersection of Sunrise Drive and County Road B. Runoff is then conveyed to the east, through a series of pipes, to the pond at the northeast corner of Edgerton Street and County Road B. Drainage Area 7 lies within the Keller Lake subwatershed. • Existing Drainage Area 8 — 1.80 Acres Drainage Area 8 represents the portions of Sunrise Drive near its intersection with Edgerton Street. It also includes the surrounding residential properties. Runoff in this area generally flows overland until it reaches the street section. Runoff is then channeled along the edge of the road, flows to the east, and is captured by a catch -basin near the intersection of Sunrise Drive and Edgerton Street. Runoff is then conveyed to the east, through a series of pipes, to the pond at the northeast corner of Edgerton Street and County Road B.. Drainage Area 8 lies within the Keller Lake subwatershed. Storm sewer piping throughout this neighborhood is very limited, located mostly at the ultimate discharge point. Generally, drainage is channeled along the edges of the streets, relying on boulevard edges to keep the drainage impounded within the street section. A significant amount of pooling occurs within the street section, contributing to the degradation of the pavement. Storm drainage leaves the neighborhood untreated for excess nutrients and pollutants, directly draining into the MnDOT ditch system, pond at the northeast corner of Edgerton Street and County Road 8, and other ponding facilities downstream from the neighborhood. 12 22