06-28-1999 Council Packet - Laserfiche WebLink

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Six properties have newer confomiing mound systems, and two properties have older conforming trench systems. Sewer and Septic System Issues On the attached map, I have sketched in 100’ x 50' rectangles to show the approximate space needed for a mound system. These locations are for illustrative purposes only, and site topography and soil conditions will control actual system locations. A review of the attached map shows that some lots are shown with only one new site, or no sites, because of the lot sizes and that the existing systems have already disturbed part of tlie lot. The fact that some lots may only have one available septic site is a concern. Without a replacement site, property owners will be in trouble if there are future problems with the new mound system. It is also possible that some properties may not have any septic sites available. To verify that conforming septic sites are available for all properties, soil borings and detailed site investigations would need to be completed for all of the properties in the project. Another issue for consideration is future requests for variances from the septic regulations to allow installation of mound systems on sites that do not meet all of the code requirements. The granting of variances could result in the installation of septic systems with a higher potential for failure. The installation of new mound systems will also result in the removal of trees and will use a large area of the property. The proposed pressure sewer system will require that the property owners operate and maintain their own grinder pump. This concern is offset by the fact that mound septic systems will also require operation and maintenance of pumps to pump waste water into the mound. Several residents are questioning the need for and benefit of moving away from septic systems to sanitary sewer. Letters outlining their concerns are attached. Staff Recommendation We realize that neighborhood residents are divided over this issue, and that the ultimate decision on sewer or septic for Weber Hills will be made by the project area residents, as they will be assessed for the project costs. Our staff recommendation is that the installation of sewer to serve this neighborhood is the best long term solution, and a decision to rely on septic systems would be shortsighted and result in future problems. We also believe that a decision on sewer versus septic needs to be made now. Today, there only a few properties with new septic systems, but as more residents install new septic systems it will be more difficult to gain neighborhood approval for a sewer project. If nothing is done now, this issue may become very controversial in several years when the City is forced to order the upgrading of non compliant septic systems. After new mound systems are installed, residents may find the results from tree loss and other property impacts undesirable; but by this time it may be too late to gain approval of a sewer project. It is also possible that some