08-24-1998 Council Packet - Laserfiche WebLink

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I. Introduction City staff has requested this report to determine the feasibility of constructing samtary sewer improvements for the Orono Orchard area, as shown on Figure 1. A portion of the neighborhood is located within shoreland making it difficult for some property owners to meet the 3 foot separauon between the seasonal water table and their sepUc system. Alternate septic sites are not avaUable on some properties due to lot size and existing topography. The City of Orono conducted a study in 1994 to determine if there were neighborhoods in Orono which should be provided with municipal sewer rather than have the neighborhoods upgrade their existing septic systems. Based on the results of that study, the City of Orono requested approval ftom the Metropolitan CouncU to extend sewer to ten Orono neighborhoods. The Orono Orchard area was one of the ten neighborhoods recently included in the Metropolitan Urban Service Area (MUSA) boundary expansion. The proximity to shoreland, lot size and topography are the primary factors suggesting mumcipal sewer service is preferable to long term septic system usage. It is estimated that 35% of the existing septic systems in the Orono Orchard neighborhood are either faiUng or non-conforming. This past summer the City completed sewer projects to serve four of the ten neighborhoods. Orono Orchard is the next area on the City ’s priority list for sanitary sewer. This report describes the sanitary improvements required to compietely serve the Orono Orchard neighborhood. The proposed sanitary sewer improvements ate presented on Figure 2. Figure 3 shows a design option to serve a portion of Lyman Avenue. The costs of the proposed improvements are presented in the appendices and a cost summary is presented in the Cost Analysis section. Orono Orchard Sanitary Sewer Improvements