03-19-2018 Planning Commission Packet

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lines, laterals and mains to be in permanent conformance with such plans and ready for connection to such public sewer mains. (d) Septic system. Where sanitary sewerage systems are not reasonably accessible and will not become available for a period in excess of 15 years, the applicant may install a sewerage system in accordance with chapter 58, article II. (e) Design criteria for sanitary sewers. (1) Generally. These design criteria are not intended to cover extraordinary situations. Deviations will be allowed and may be required in those instances where considered justified by the city. (2) Design factors. Sanitary sewerage systems should be designed for the ultimate tributary population. Due consideration should be given to current zoning regulations and approved planning and zoning reports where applicable. Sewer capacities should be adequate to handle the anticipated maximum hourly quantity of sewage and industrial waste together with an adequate allowance for infiltration and other extraneous flow. Sewers shall be designed in accordance with standards and specifications approved by the city. (Code 1984, § 11.43) Sec.82-256.-Double-frontage lots,access to lots,and front/back lot divisions. (a) Double-frontage lots. Double-frontage and reversed-frontage lots shall be avoided except where necessary to provide separation of residential development from traffic arterials or to overcome specific disadvantages of topography and orientation. (b) Access from any arterial roadway. Lots shall not, in general, derive access exclusively from an arterial roadway. Where driveway access from any arterial roadway may be necessary for several adjoining lots, the council may require that such lots be served by a combined access drive in order to limit possible traffic hazard on such roadway. Where possible, driveways shall be designed and arranged so as to avoid requiring vehicles to back into traffic on any arterial roadway. (c) Front/back lot subdivisions. Flag lots and easement back lots shall not be created. Front/back lot divisions shall be allowed only in conjunction with the creation of an outlot to provide access from the back lot to the public or private road. Such outlot shall not be allowed as creditable lot area for either the back or front lots. Front/back lot subdivisions shall adhere to the following standards: (1) Applicability. a. Front/back lot divisions may be used when existing property dimensions are narrow and deep, such that lot width does not allow for a side-by-side lot split, but acreage is adequate to provide a front lot and a back lot without requiring an area variance when the area of the outlot access corridor is excluded. b. Front/back lot divisions may be used for individual lot splits but may not be used when subdividing a large parcel into numerous lots if creation of a back lot is merely a convenience to the developer rather than supported by unique site factors. c. A front/back lot division shall not be allowed when any existing residence on a neighboring property abutting the proposed access outlot is located nearer its affected side lot line than a distance equivalent to the zoning district required front yard depth. (2) Dimensional standards. Dimensional standards for back lots shall be as follows: a. Lot area shall be 150 percent of the zoning district requirement. Wetlands may be allowed as area credit for meeting the 150 percent back lot area requirement, as long as the back lot contains sufficient contiguous dry buildable land to satisfy the minimum acreage requirement of the underlying zoning district.