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<br /> I <br /> i <br /> METHODOLOGY: <br /> City of Eugene Systems Development Charges <br /> Appendix D <br /> Wastewater System Charge Detail <br /> 4.0 Local Wastewater System <br /> 1.1 ocal Wastewater SDC Formula Within the City, excluding the River Road/Santa <br /> lara/Highway 99 Area <br /> ExGud ng the River Road/Santa Clara/Highway 99 Area identified in Attachment 2, the local <br /> waste ter SDC is based on the replacement value of the wastewater collection system in <br /> place n the date the rate is established plus all projects in the wastewater master plan <br /> neede to serve the area inside the City's Urban Growth Boundary (UGB). The equivalent <br /> asses ments and any state or federal grants are subtracted from this amount and the <br /> remain er is divided by the total number of "equivalent dwelling units" (EDUs) which can be <br /> accom odated within the UGB (both existing and projected). For a current estimate of local <br /> waste ater system values to serve new development, including future projects and existing <br /> reserv capacity (reimbursement) details, please see Table 4, section 5. <br /> The im act of new development on the wastewater system is calculated in terms of equivalent <br /> single amity dwelling units (EDUs) or plumbing fixture units. The impact of an EDU was <br /> estima ed by determining the non-assessable cost of the future system within the urban <br /> growth oundary allocated to ultimate residential development on the basis of sewage flow. <br /> The St to Drainage Plumbing Code is the basis for the calculation of the number of EDUs for <br /> differe t types of development. For purposes of setting this rate, one EDU is equal to 16 <br /> plumbi g fixture units. Plumbing fixture units are defined in the Plumbing Code for each <br /> plumbi g fixture type. <br /> The tot I cost of the existing system within the (UGB) listed in Table 4, section 1, is estimated <br /> based n figures from the "Infrastructure Replacement Values Report" and the Wastewater <br /> Master Plan prepared by the City's Public Works Department. Costs related to the River <br /> Road/S nta Clara/Highway 99 Area portion of the system outside the City are excluded . The <br /> cost of uture projects within the urban growth boundary other than in the River Road/Santa <br /> Clara/H ghway 99 Area were taken from the Wastewater Master Plan. Future project costs <br /> are list d in Table 4, sections 1 and 5. Assessable costs were estimated by calculating the <br /> cost of n 8" equivalent system as specified in the City Code. The non-assessable portion <br /> of that st is estimated and listed in Table 4, section 4. Details on the calculation of the local <br /> waste ter SDC are shown in Table 4 and the formulas are illustrated in Figure 4. <br /> The tot I number of Single-family Units (SFU) is calculated by multiplying the ratio (percent) <br /> of Sing a Family Dwelling Units (SFDU) by the number of Total Capacity Residential Units <br /> (existin plus future). The total number of Residential Units is based on the system design <br /> capaci for users within the (UGB). The total user flow measured through the plant that is <br /> attribut ble to single-family residential development (SFDU Attributable Flow) is determined <br /> based n billable flow data from the regional sewage treatment plant. The system capacity <br /> for the ity's Wastewater collection system is converted to total EDUs, and is estimated by <br /> dividing the number of SFUs, by the percent of SFD Attributable Flow. <br /> 'i May 1, 1997 City of Eugene SDC Methodology Page D-1 <br /> 'I <br /> 'I <br /> j <br /> <br />