Industrial Wastewater Treatment Plant
(IWTP) Enhancements
Pre-Construction Services
CIP C801234
Item No. 8l_supp
Meeting Date: July 23, 2024
Purpose/Scope
Install an onsite pre-treatment facility
• Technology: Aerated Gravel Beds (AGBs)
• Located in Runway Protection Zone
Upgrade existing IWTP facility
• PLC Controls
• Equipment upgrades
• Building modifications
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IWTP Location
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IWTP
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IWTP Overview
• IWTP – Industrial Wastewater Treatment Plant
• IWS – Industrial Wastewater System – includes runoff from:
– Aircraft hangars
– Cargo areas
– Deicing areas
– Maintenance facilities
– Passenger loading areas
• Discharges to Puget Sound and King County Sewer System
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Example Aerated Gravel Bed Units at Cincinnati Airport
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CIP: C801234
Budget: $200,000,000 - $300,000,000
Previous Authorization: $13,635,000
Current Request: $6,500,000
Key Schedule Milestones:
• 30% Design Kickoff: August 2024
• 30% Design Complete: April 2025
• Full Design Authorization: 2Q 2025
• Construction Authorization: Q2 2026
• Construction Start: Q3 2026
• In-Use Date: Q4 2028
Project Budget & Schedule
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We are here
Cone of Certainty
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Action Requested
1) Advertise and execute a General Contractor, Construction Manager (GC/CM) construction contract and
authorize pre-construction services for CIP# C801234.
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