8b. Presentation
Concourse and Parking Garage Low Voltage Upgrade Project
Item No. 8b_supp Meeting Date: January 4, 2022 Concourse & Parking Garage Low Voltage Electrical Upgrades Design Authorization Locations Concourse B Concourse C Concourse D Parking Garage N 2 Project Overview Purpose: Renew & replace electrical equipment throughout Concourses B, C, D, and the Parking Garage at STIA. Summary: CIP C801280 Concourse Low Voltage Upgrades CIP C800901 Parking Garage Low Voltage Upgrades Projects have similar scope and will be implemented with a consistent approach; therefore, they have been combined into a single request Panels have been prioritized for replacement based on condition and highest risk of operational impact 3 Additional Project Information Conditions of Existing Equipment: S 146th St Beyond service life (40+ years in many cases) Ave S Lack of available spare circuit breakers Poor condition th Lack of available space in electrical rooms 24 Obsolescence / no spare parts available Panels with no individual disconnecting means Project Benefits: Reduce the risk of failures and outages at STIA. Metering will provide opportunities for future energy conservation projects. Increase capacity for Airport Dining & Retail and other tenant and Port projects. 4 Project Scope Replacement of existing panelboards, motor control centers, switchboards, feeders, meters, and transformers Installation of new electrical closets for relocated panels Installation of a new electrical room in Concourse D Upgrade fire protection & HVAC systems as necessary to support electrical equipment 5 Concourses Project Budget & Schedule CIP: C801280 Key Schedule Milestones: Budget: $28,350,000 Design Start: Q3 2022 Construction Start: Q1 2024 In-Use Date: Q3 2025 6 Parking Garage Project Budget & Schedule CIP: C800901 Key Schedule Milestones: Plan of Finance Budget: $3,267,428 Design Start: Q3 2022 Revised Budget: $12,544,000 Construction Start: Q1 2024 Budget increase is due to: In-Use Date: Q1 2025 Project complexity (panel tracing, cutovers, night work, etc.) not considered in original estimate Number of panels needing replacement Revised budget is based on actuals from Main Terminal Low Voltage (C800061) 7 Combined Project Budget & Schedule Concourses Parking Garage Project (C801280) (C800901) Design start 2022 Quarter 3 2022 Quarter 3 Commission construction authorization 2024 Quarter 1 2023 Quarter 3 Construction start 2024 Quarter 1 2024 Quarter 1 In-use date 2025 Quarter 3 2025 Quarter 1 Project Amount of this request Total estimated project cost CIP C801280 $7,200,000 $28,350,000 Concourse Low Voltage Upgrades CIP C800901 $4,000,000 $12,544,000 Parking Garage Low Voltage Upgrades Total $11,200,000 $40,894,000 8 Cone of Certainty We are here 9 Project Risks and Mitigation RISK DESCRIPTION MITIGATION PLAN Electrical Closet Space Some panels will require relocation. Identify closet space locations, as There is risk that a location cannot be needed, as part of 30% design. found within the assumed 50ft vicinity Consolidate relocated panels to the of the existing panel, requiring longer same closets where possible. conduit runs, HVAC tie-ins, and other delays. Circuit Tracing Panels will be traced early in the GCCM and pre-construction project to confirm loads and reduce services will be utilized after 30% risk. The scope of the tracing effort design to trace identified panels. includes some uncertainty due to Panel tracing costs and lessons outdated panel schedules on aging learned from recent projects have electrical panels. been used as a basis for the estimate on this project. 10 Action Requested 1) Complete design; 2) Advertise and execute up to two professional services contracts for design services for the Concourse Low Voltage Upgrade project (CIP C801280) and the Parking Garage Low Voltage Upgrade project (CIP C800901); 3) Advertise and execute a General Contractor, Construction Manager (GCCM) construction contract and authorize pre-construction services for CIP C801280; 4) Issue a job order contract (JOC) to carry out pre-construction services for CIP 800901; 5) Use Port of Seattle crews for pre-construction activities for CIPs C801280 and C800901. 11 Thank You! Operated by the Port of Seattle FlySEA.org
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