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The original design of the CAB interceptor, which was built to provide regional sanitary sewer service to Ramsey, Anoka, Brooklyn Park, Champlin, and portions of Dayton and Andover included an allocation of 3.84 MGD (average day) flow for Ramsey. The projected 2020 flow from Ramsey as stated in the plan is 2.88 MGD (avg.). The flow projections in the plan indicate that the 2020 flow from the city to the Metropolitan Disposal System will be 2.88 MGD (avg.). However, the projections were based on a total projected 2000 flow of 353 MG. The actual flow in 2000 as allocated to the city was 219 MG. If the 134 MGY difference is subtracted from the 2020 flow projection, the average daily flow would be 2.52 MGD versus the 2.88 MGD as stated in the plan. The plan indicates that all MUSA additions will be completed by year 2015. The plan does identify a 1000 acre "Central Study Area" within the area that was originally part of the CAB interceptor service area and that is was originally identified as "rural developing ". The "Central Study Area" will be reviewed by the city for potential urban development. Of the 1000 acres within the study area, 40 acres consist of a park that has little chance of future urbanization. There are also approximately 570 single family residential homes within the study area that have an average lot size between 1 to 2.5 acres and approximately 150 acres of undeveloped land. The plan does not indicate the number of potential housing units within the study area that could be served with regional sanitary sewer service. However, in discussions with the city's consultant it is conceivable that up to 1,000 sewered housing units could be developed within the "study area ". The plan indicates that the city will work with the MCES to identify areas within the study area to develop with water and sewer services. The city, within two years will submit a plan that outlines development of this area at urban densities after 2020. During the interim, any developers proposing development within the study area would be required to file a sketch plan with the preliminary plat showing a reasonable re- subdivision of the plat to urban densities, as provided for in the current city ordinance. The Council has projected a 2040 sewered housing unit count for the City at 10,570 households. This number is less than the original design of the CAB interceptor. The plan indicates that the ultimate sewered housing units within the 2020 MUSA are approximately 7095 units. The "study area" has the potential for creating an additional 1,000 units. When added together, the total potential sewered household count could be 8095. Thus, the plan number of sewered households would represent an under utilization of the CAB by 2475 households. Based on sewered households his represents an under utilization of the regional disposal system by 23% after 2020. The plan does not address any requirements for properties provided sanitary sewer service through the use of on -site septic systems to connect to the Metropolitan Disposal System (MDS) once regional services are available. However, the Council is aware of a number of properties within the current MUSA that continue to be served by on -site septic systems. It is also our understanding that these properties have been left to remain served through these systems even though regional service has been provided. This does not conform to the 1999 MCES Waste Discharge Rules for the Metropolitan Disposal System. These rules state that "Within 24 months after a public sewer connected to the MDS becomes available to a property served by a private sewage disposal system or treatment works, a connection shall be made to the public sewer in accordance with these rules." Findings • The Plan outlines an ultimate growth pattern that may result in an under utilization of the MDS by approximately 2,475 sewered households between 2020 and 2040 when including the potential 1,000 sewered households within the Central Study Area. If the city of Ramsey is unable to absorb it's share of the urbanized growth in the region after 2020 where capacity in the MDS already exists to accommodate it, future unnecessary extensions to the MDS would be required. • The Tier II Comprehensive Sewer Plan should include revised sanitary flow projections to be consistent with the current flow allocation volumes established by the Council. In reviewing the historical flow allocation volumes for the city it appears that the year 2000 flow projection is approximately 134 MG more than the actual flow measured/estimated from the city. 15