09/02/2008 Council Packet - Laserfiche WebLink

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MCES Lift Station L69, which serves this District, was constructed with substantial reserve capacity and appears to be adequate for the needs of its service area through the planning period. The future service needs are based on ultimate development, that is, development of all currently undeveloped land at urban densities. It is also assumed that all existing homes served by on -site systems will either be redeveloped or connected to the sewer system in the future. Ultimate development of all areas of Sewer District 1 is not expected to occur before 2030. Many of the undeveloped areas of District 1 can be served by extending 8 -inch and 10 -inch lateral sewers off the existing system. Lateral sewers will typically be constructed by developers and are not shown on the Capital Improvement Plan. A lift station will be needed to serve an area of about 400 acres of future residential development located in Sections 32 and 33 (Sub- District 1E). This lift station would discharge to the existing MCES forcemain at County Road J and Ware Road. Another lift station will be needed to serve Sub - District 1G. This lift station will discharge to an existing gravity sewer in Black Duck Drive. Sewer District 2 Sewer District 2 is located in the northwest corner of the City. This area consists of a mixture of urban and rural land uses. District 2 currently contains about 1,460 sewered residential units, 1,085 un- sewered units, and 185 vacant lots in existing developments. This District also contains about 1,220 developable acres designated as low density residential. There are also about 231 developable acres designated as medium density residential, 114 developable acres designated as high density residential, and 60 acres designated as mixed use residential. In total, these areas are projected to support approximately 5,010 new residential units. In addition, District 2 includes the Lino Lakes Correctional Facility, equivalent to about 500 existing residential units. In total, assuming existing un- sewered residential areas eventually receive service; District 2 could contain the equivalent of about 8,240 residential units at ultimate build - out. District 2 also includes extensive existing commercial and industrial area, as well as approximately 108 developable acres designated commercial, 23 developable acres designated as industrial, and 16 acres designated mixed use - commercial. Projected new employment in the commercial, industrial and mixed use areas totals about 1,775 employees. All currently sewered areas of District 2 are served by MCES Interceptor 83 -61, a 24 -inch gravity sewer located in North Road. The MCES has allocated a capacity of 3.6 Million Gallons per Day (MGD) to Lino Lakes in the existing interceptor. However, the MCES has initiated a program to construct a new interceptor, known as the Southeast Anoka County Interceptor, which will replace existing interceptor 83- 61. The new interceptor, scheduled for completion in 2009, will provide at least 7.6 MGD of capacity for Lino Lakes, which should be adequate for full development of District 2. Currently, all existing sewers in District 2, except for a small area near Rice Lake, discharge to the City's West Central Trunk Sanitary Sewer, thence to Lift Station No. 4, and thence by forcemain to MCES Interceptor 83 -61. The trunk sewer, Lift Station and Forcemain have substantial reserve capacity today, but will not be adequate for ultimate development for the entire area. Ultimate development of all areas of District 2 may not occur for many years. However, projected development will probably result in flows in excess of present available capacity in the City's trunk sewer before 2030. Prior to that time, a relief sewer should be constructed to serve the northwesterly and westerly portions of District 2. Construction of the Century Farms North subdivision, commencing in 2003, required construction of Lift Station No. 10. The lift station was constructed concurrently with the developer's project, and sewer mains within the subdivision were over -sized to serve as trunk sewers. The Capital Improvement Plan includes future extensions of these sewers north to Main Street and east to 4th Avenue to serve anticipated development north and east of Century Farms North. 7 -14 • • •