11-22-1999 Council Work Session - Laserfiche WebLink

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I I I I I I I I This portion of the municipal system was constructed as an extension of the Long Lake municipal system primarily to provide sewer (and water) service to the new Orono High School being built on the campus west of Long Lake. In addition, this system provides service to two other schools and to the Orono Industrial Park, Allflowfrom the Orono School System discharges into the Long Lake municipal system and eventually into the Long Lake-Pump Station of the Orono-Long Lake Interceptor. The Orono School System has additional capacity in the Orono lines hut is limited by restrictions of certain downstream lines in Long Lake. In a cooperative agreement with the cities of Long Lake and Medina, Orono will participate in construction of a bypass line in Long Lake to alleviate the existing constriction. The basic purpose of this bypass is to provide capacity for sewering the existing 83 homesites in the housing cluster of Medina-Morningside to eliminate an existing health problem caused by failure of the on-site systems due to small lot sizes, tight soil and high water table. This project will bypass the Long Lake restrictions with a new 10" line allowing sufficient capacity for Medina-Morningside to be connected to tl. • existing Orono sewer line near the Orono High School. In addition, the bypass will provide reserve capacity for the Long Lake industrial area and other Long Lake users, will reroute enough flow to allow permanent connection of Orono's Hackberry Hills area as it exists, and will permit reallocation of the existing reserve in the Orono lines to the existing system users. (Need to reflect completion of Medina system, the Long Lake bypass, addition of more area to MUSA in 1989, and construction of sewers serving Sugarwoods, North Long Lake, and Long Lake Countr>' Club Addition) 3. HACKBERR Y HILLS SYSTEM CAPACITY 25 residential units connected - design capacity 0 units reserve DISCHARGE Long Lake municipal system & Long Lake Pump Station of Orono-Long Lake Interceptor CONSTRUCTIOS 1973 Project: 9" PVC, 15" RCP gravity Hackberry Hills is a compact development of 25 homes constructed in the 1950's on small lots and with poor septic systems The area was experiencing multiple system failures and health hazards by the early I970's which resulted in the construction ofthese sewer laterals. Because the surrounding area is rural pastureland, the project was designed and constructed solely to serve these homes with no reserve capacity for future development. Also, the system discharges into the Long Lake system at a location that has no capacity for additional Orono service. This discharge was originally intended to be temporary; however , upon completion of the Long Lake bypciss. there will be sufficient Long Lake capacity to accommodate these 25 units on a permanent basis. (Onlv minor chances needed re Hackberry) CMP 6-38