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ATTACHMENT F-1 <br />NOTES TO SURFACE WATER ENTERPRISE FUND <br />1) Reflects proposed rate increases of 5% in 2019, 3% in 2020, and 5% and 3% in 2021 through <br />2024. We will continue with the annual rate model review to confirm that the proposed Surface <br />Water rate increases are necessary. <br />The National Pollution Discharge Elimination System (NPDES) permit required by the State <br />Department of Ecology is having a significant impact on the Surface Water fund. <br />2) Potential grants and/or bond revenue. Included is the estimated Department of Ecology grant <br />for NPDES and King County Flood Control District Opportunity grants as well as significant <br />grant funding for the Chinook Wind Project. <br />3) Debt schedule includes PWTF loans and the 2006 Allentown Bond. <br />Debt Service includes: <br />Expires <br />2019 <br />2020 <br />2004 PWTF Duwamish (15%) <br />7/01/21 <br />11,770.55 <br />11,712.56 <br />2004 PWTF Cascade View Const. <br />7/01/24 <br />228,808.47 <br />227,697.75 <br />2004 PWTF Allentown (12%) <br />7/01/24 <br />38,328.11 <br />38,142.05 <br />2006 Bond Allentown (12%) <br />12/31/26 <br />21,752.10 <br />22,034.19 <br />2018 Public Works Shops (23%) <br />12/31/38 <br />219,831.00 <br />250,675.00 <br />Total <br />4) An Interfund Utility Tax was approved in October 2009 for the water, sewer, and surface water <br />utilities. Gross revenues are currently taxed 10% through December 31, 2021. <br />5) The Working Capital Reserve Fund's policy was updated in 2012 per Resolution No. 1774 to <br />maintain an adequate fund balance in each of the enterprise funds. For the Enterprise Funds, <br />the unrestricted fund balance shall equal or exceed 20% of the previous year's revenue, <br />exclusive of significant non -operating, non -recurring revenues. <br />6) Cost of engineering to support capital projects, NPDES, and operation efforts in-house. <br />Surface Water Enterprise Fund <br />The City's Enterprise Funds account for utility operations that are self - <br />supported through user charges. The utilities are financed and operated like <br />a private business enterprise which requires periodic determination of <br />revenues earned; expenses incurred, and net income for capital <br />maintenance, public policy, management control and accountability. The <br />Surface Water Enterprise Fund accounts for operations and capital <br />improvements for the City's storm drainage and surface water management <br />function. Surface Water projects are required to meet Federal, State and local <br />mandates. The largest contributor to the surface water enterprise fund is the <br />City of Tukwila. <br />2019 — 2024 Financial Planning Model XXXVI 11 14 <br />