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3. Installation of manhole guards, a system which <br />eliminates surface water inflow into manholes sutiect to <br />occasional inundation. <br />4. Use of state-of-the-art technology in the design and <br />construction of all new sewers added to the system. <br />The City's goal is to limit I/I to no more than 25% of the <br />total floWf and reduction below 25% in all locations where that <br />is feasible and practical. <br />K, Ordinances, Controls, JUSministration and Enforcement <br />The City of Orono began regulating on-site sewage treatment <br />systems in 1961. Municipal sewer connections have been regulated <br />since 1964, the year that the first municipal sewers were <br />available. A number of ordinances applicable to sewage treatment <br />in the City are listed in the 1980 Comprehensive Plan. The <br />following ordinances adopted since 1980 apply to sewage treatment <br />in the City: <br />Ordinance #246 - December 30, 1982 <br />REGULATING SEWAGE DISPOSAL SYSTEMS ON <br />LAKE MINNETONKA ISLANDS, including <br />minmum requirements for seasonal <br />residential properties. <br />Ordinance #34, 2nd Series - April 27, 1987 <br />Additionally, <br />to adopt the MPCA <br />treatment systems. <br />ESTABLISHING SANITARY SEWER CONNECTION <br />CHARGES for properties connecting to <br />municipal sewer but not previously <br />assessed. <br />the City is currently reviewing an ordinance <br />Chapter 7080 standards for on-site sewage