UTILITIESRECOMMENDED

City of SeaTac Transportation and Public Works Committee Agenda Packet 2026-06-25

SeaTac, Highline Water District enter water main ILA

$2,757,516.00 (engineer’s estimate of construction cost; District to reimburse actual direct construction costs plus 10% for construction administration)City of SeaTacHIGHLINE WATER DISTRICTJune 25, 2026

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Description

SeaTac Public Works is seeking Council authorization for an interlocal agreement with Highline Water District for the City to construct water distribution improvements within the Airport Station Area Pedestrian Improvements Project and be reimbursed for all related costs plus a 10% construction administration fee. The engineer’s estimate for the water work is $2,757,516 with construction anticipated to begin in September 2026 and last about 655 working days.

Contract Details

Contract Amount

$2,757,516.00 (engineer’s estimate of construction cost; District to reimburse actual direct construction costs plus 10% for construction administration)

Vendor

HIGHLINE WATER DISTRICT

Agency

City of SeaTac, WA

Contract Type

UTILITIES

Document Date

June 25, 2026

Contract Term

Construction estimated to start September 2026 with anticipated duration of 655 working days

Renewal Info

Single-project construction ILA; no renewal or automatic extension is described. Cost overrun sharing applies only if both bid and final costs exceed 125% of the engineer’s estimate.