TIS 2025-05-28 Item 2B - Interlocal Agreement - Amendment #1 for Surface Water Billing Services with King County

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one-time conversion fee will be billed in two installments in 204-9 2025. The City will pay invoices within 45 days of receipt. VI. Effectiveness, Duration, Termination and Amendment A. This Agreement is effective upon signature by both Parties and will remain in effect until December 31, 2028 December 31, 2030. Tukwila SWM Service Charge Rate Structure Costs for Billing and Revenue Collection Services Provided by King County 2019 Cost Estimate for SWM Billing and Rcvcnuc Collection Service, Ann gal SWM Scr..ic ,cd on C 1 1 9 n 42143er of nts and estimated 2019 per account fcc of $1.75*) $8,958.25 Onc time fcc not to exceed 105,624 to customize King County database for Tukwila accounts (estimated to be between $47,413 to $105,624) $105,624.00 Annual Rcvcnuc Collection (based on 1% of estimated annual revenue) $52,952.00 TOTAL $167,5311.25 a-s of t14e date of the 0 „tion of the attached ngreemen+ the actual fee has yet to be calculated for 2019. The estimated range is $1.50 to $1.80). 2026 Cost Estimate for SWM Billing and Revenue Collection Services Annual SWM Service Billing (Based on 5,095 number of accounts and $9,935.25 estimated 2026 per -account fee of $1.97*) One-time fee not to exceed $70,000 to customize King County database $70,000 for Tukwila accounts (estimated to be between $50,000 to $70,000) Annual Revenue Collection (based on 1% of estimated annual revenue) $65,877.81 TOTAL $145,813.06 *as of the date of the execution of the attached Amendment #1, the actual fee has yet to be calculated for 2026. The estimated range is $2.00 to $2.40). All other terms and conditions of the original Agreement, as amended, remain if effect. The parties have executed this Amendment #1 by having their representatives sign below. PAGE 2 27