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SYSTEM DEVELOPMENT CHARGE METHODOLOGY <br /> <br />Once project costs have been allocated to system component and project type categories, <br />and the costs have been distributed to the system capacity parameters, the final step in the <br />project cost allocation process is to assign costs to user types. For the purposes of the SDC <br />methodology, there are two user types: 1) existing customers, and 2) new customers or <br />growth. Costs that are allocated to growth are incorporated into the SDC improvement fee <br />calculation. Costs allocated to existing customers must be paid through some other funding <br />sources (e.g., existing reserves or future user rates). <br /> <br />As indicated in Figure 3, the allocation of project costs to growth is a function of the type of <br />project and a detailed capacity analysis that identifies growth's share of: 1) planned capacity <br />expansion, and 2) total future load. <br /> <br />Costs by capacity parameter are allocated to growth as follows: <br /> <br /> Capacity Projects: Growth's share of capacity expansion (%) X project cost ($) <br /> Performance Upgrades: Growth' s share of total future system capacity (%) X project cost ($) <br /> <br /> Rehabilitation Projects: Allocation to growth = 0% <br /> <br />Where: <br /> <br />1. Growth's share of capacity expansion = Projected growth capacity requirement (not met <br /> by existing available capacity) divided by additional capacity to be added to the system <br /> by planned improvements. <br /> <br />2. Growth's share of total future system capacity = Projected growth capacity requirement <br /> (total) divided by total future system capacity requirement. <br /> <br />Table 6 summarizes the growth allocation percentages by project type. The documentation <br />for these figures is provided in Appendix C. <br /> <br />TABLE 6 <br />Growth Allocation Percentages by Project Type <br /> <br /> Project Type Average Flow Peak Flow BOD TSS <br /> <br />Capacity (growth's sham of capacity 100% 29.4% 100% 100% <br />expansion) <br /> <br />Performance (growths sham of total 26.1% 10.8% 25.9% 26.1% <br />future system capacity) <br /> <br />Rehabilitation 0% 0% 0% 0% <br />Source: 2004 Facilities Plan <br /> <br /> Step Four- Adjustments <br /> The methodology includes the following adjustments to the reimbursement and <br /> improvement fee cost bases: <br /> <br />· Gifts or grants from federal or state government or private persons. Existing (and if <br /> applicable in the future, planned) asset costs are reduced by the percent of the asset that <br /> is funded by grants. <br /> <br /> SEA31003271388(DG).DOC/041040034 <br /> <br /> <br />