A. The fees set forth in this chapter shall be adjusted from time to time, but at least once every five years (or more frequently if required by changes in state law subsequent to the effective date of the ordinance codified in this chapter,) after a public hearing, subject to city council review and approval, to reflect changes in the project costs of construction, adjusted for inflation, less the cost of the improvements to serve the assessment district properties. The city council finds that there is a reasonable relationship between the amount of the fee set by resolution of the city council and the cost of the public facilities or portions thereof attributable to the development on which the fee is imposed. The basis for such determination is set out in reports to the city council from the city manager, the city planner and the city engineer and such consultants as the city council determines are necessary, if any, to develop accurate costs and fees to cover such costs.

B. The method for the determination of the amount of these fees for each parcel, based upon the factors set forth in Section 13.18.020(B), would be as follows: The costs would be spread proportionally based upon the land area served, based on the number of single-family residential equivalent dwelling units, (EDU). The service area would be based upon the design capacity of the sewer trunk line. Capacity would be assigned to each EDU based on the city’s design standard criteria at an average flow of three hundred gallons per residential unit per day multiplied by a peaking factor. The total number of EDU’s would be calculated by dividing the design capacity of the trunk line by the peak flow per EDU. The cost allocated to the benefited area would be the costs of the Southside Infrastructure Project sewer system improvements multiplied by the percentage of capacity remaining in the new trunk sewer line after subtracting the capacity attributable to the nonbenefited properties served. (Ord. 415 §1, 1997).