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Romsey County Engineers Deportment <br />3377 North Rice Street <br />Saint Paul, Minnesota 55112 <br />City of Little Canada <br />c/o Mr. Joseph Chlebeck, Clerk <br />515 East Little Canada Road <br />Little Canada, Minnesota 55117 <br />Dear Mr. Chlebeck, <br />Divisions of <br />Engineering <br />Maintenance <br />Motor Vehicle <br />Environmental <br />(612)484 -9104 <br />July 5, 1977 <br />RE: Drainage along Demont Avenue <br />East of Rice Street <br />You have requested an evaluation of whether the Demont Avenue ditch <br />and culvert system would be adequate if further development of the Terrace <br />Heights Mobile Home Park occurs. <br />The Demont system drains approximately 4o acres southeast of Demont <br />Avenue and Rice Street including State and County road right -of -way, Kellogg <br />High School, the Mobile Home Park, and some commercial development. The system <br />consists of an open ditch along the south side of Demont with culverts at two <br />residential entrances and one pedestrian crossing. <br />The two entrance culverts, (at 20 and 78 Demont) have inadequate <br />capacity for both present and future stormwater flows. Development of an <br />additional three acres of the mobile home park will slightly increase flows <br />through the system, but should not greatly aggravate overflow problems. <br />To provide adequate capacity, the present corrugated metal culverts <br />should be replaced with larger concrete arch culverts. As much as possible, <br />replacement costs should be shared according to runoff contribution. <br />DGS/cms <br />,tC EEIWIQ <br />JUL 6 1977 <br />CITY OF <br />LITTLE CANADA <br />(' ev <br />Daniel G. Schacht, P.E. <br />Environmental Services Engineer <br />