TO: Members of the City Council
FROM: Mayor Angela Birney
DEPARTMENT DIRECTOR CONTACT(S):
Public Works
Dave Juarez
425-556-2733
DEPARTMENT STAFF:
Public Works
Mike Haley
Project Manager
Public Works
Jon Spangler
Construction Division Manager
Public Works
Steve Hitch
Interim Division Manager
TITLE:
title
Approval of the Reallocation of Capital Improvement Program Funding from Full Replacement of Wastewater Lift Stations 5,6, and 15 in 2021-2022 to Targeted Equipment Upgrades for Wastewater Lift Stations 5,6,8,11 and 15
OVERVIEW STATEMENT:
recommendation
The current Wastewater CIP relies on a strategy of full replacement of each lift station when that station reaches the end of its useful life. This presents a challenge as some of the equipment in a station may become less reliable before a station is scheduled for full replacement and replacement equipment may no longer be available, which happened earlier this year to one of the lift stations.
A different approach being proposed to manage the lift stations is to prolong the life of the stations and delay the need for a full upgrade, using a "Strategic Asset Management Strategy". Targeted equipment upgrades will be performed to extend the life of lift stations; this will allow for smaller investments in equipment to ensure that the stations can operate with limited risk of failure for a longer period of time before full replacement.
Five of the City's 23 lift stations have been identified as needing immediate equipment upgrades to ensure an acceptable level of reliability. The proposed CIP revision will fund targeted equipment upgrades to Lift Station 5, 6, 8, 11, and 15, with the goal of completing those upgrades in 2022, instead of funding design and/or construction of full replacement of Lift Stations 5, 6, and 15.
Staff is assessing Lift Stations 5, 6, 8, 11, and 15 and will develop a revised Wastewater Lift Station Plan to upgrade all 23 lift stations over time. The Strategic Asset Management app...
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