11-22-1999 Council Work Session - Laserfiche WebLink

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treatment methods and levels sufTicient to safeguard the public health and the natural environment. The objective of sewage treatment planning is to determine the most cost- effective treatment method consistent with the primary goal and with the City's other planning objectives. In urban areas, the preferred method is obviously central sewerage. In rural areas, at rural densities, the preferred method is individual on-site treatment and disposal. Where older, developed housing clusters exist within otherwise rural areas, sewer facilities planning requires the study of a wide range of alternative treatment methods. Orono's Alternative Studies include an inventory and analysis method similar to that included in the MWCC's 201 Alternative Waste Management Systems Evaluation Study. Acceptable solutions for treatment difficulties include the follow ing list of options: Alteration of the water consumption habits of the users, coupled with careful system maintenance. 2) 3) Repair or reconstruction of individual systems. Replacement of existing systems with new individual systems constructed to new City (WPC-40) City and State standards. Installation of innovative on-site systems inc ludin g eonst dcfatien-e^ mpostin g Of in cin erating devices within guidelines established in City codes and MPCA Rules Chapter 7080. 5) 6) Installation of individual holding tanks with off-site disposal. Installation of a collection system and a community drainfield (only where municipal sewer is not a viable option). Installation of a collection system connected to the metropolitan int cfceptor sewer system. 8)Condemnation and demolition. All of the foregoing options are self-contained, on-site alternatives e.xcept the connection to municipal sewer. The Metropolitan Coun cil's Water Quality Man agement Policy 11 (Pg. W12/7 9HiHew9 the connection of ex istin g rural de^■clepn1 cn ^ into th e inte rceptor system if iden tified in th e CSPP. Orono's Rural Sewage Treatment Peltey H- Policies allows consideration of such a connection as one alternative to solving a documented health hazard should the on-site systems fail to function properly. In no case would such sewerage foster new development, it would only be used to correct existing deficiencies, and then only if this option is cost effective compared to the other viable alternatives. Orono has-idc ntified five rural hou sing clusters for ahrrn ative waste mana gement studies. In certain-ho usin g clusters, poor soil or topography condi tion s combine with relatively small lot sizes to inc rease th e likelih ood of system failures wh ile at th e same time reducing th e option s-avatlable for repair cr replacement . -In oth er areas, in divich fitHot sizes do not confor m to th e Minnes ota's DNR's Muni cipal Sh orelan d Managemen t CMP 6-46 L. I I I 1 1 1 I 1 I