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Council hears $40M-plus plan for Purdum Drain sewer trunk; staff proposes staged funding and developer reimbursements
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Summary
Staff presented a multi-year funding plan for the Purdum Drain trunk sewer improvements that relies on sewer impact fees, water-renewal fund advance, developer latecomer agreements, a proposed General Government internal loan and other sources; staff projected a 7-year payback with impact-fee assumptions and will return with action items during budget sessions.
City staff presented a three-year, multi-source funding plan for the Purdum Drain trunk sewer project and outlined projected revenues and a long-term return on investment.
Doug Racine (speaker 11) and Chris Boas, capital and grants manager, walked the council through funding sources that include previously budgeted amounts, sewer impact fees, water and irrigation funds repaid through latecomer agreements, $10 million from the development services fund balance, developer latecomer agreements estimated at $8.5 million, proceeds from a land repayment behind Fred Meyer, and a proposed internal GenGov loan of up to $7.5 million to be repaid by future developer fees.
Chris Boas said the plan is to sequence funding so staff "knock off" funding sources one at a time rather than pull from multiple buckets at once and to reimburse any water-renewal fund advances with impact-fee receipts over several years. The presentation noted roughly $15 million could initially come from the water-renewal fund balance and would be reduced to about $5.8 million net after reimbursements from sewer impact fees.
Staff presented conservative development and revenue scenarios: an estimated buildout of 1,700 undeveloped acres could generate roughly 5,206–7,039 dwelling units under different assumptions and a midrange projection of roughly 17,361 new residents at full buildout. Using conservative unit counts, staff projected $44.7 million in impact-fee revenue over time and modeled a 7-year break-even with impact fees included, or a 14-year payback without them.
Council members asked staff to prepare a public-friendly summary of the funding plan; staff said the full package is available in the meeting packet and will be posted publicly, and that an action item and budget amendments will follow during the budget process. No funding appropriation or loan was approved at this informational session.
