MEMO TO: Members of the City Council
FROM: Mayor Angela Birney
SUBJECT:
title
Acceptance of Construction: Pressure Reducing Valve Station Replacement (Phase 1), and Approval of the Final Contract in the Amount of $3,016,188.45, with Razz Construction Inc. of Bellingham, Washington, Project No. 20021525
I. RECOMMENDED ACTION
recommendation
Approve the final contract amount with to Razz Construction Inc. of Bellingham, Washington, for the base bid amount of $3,054,194, plus or minus change orders and bid items increases or decreases, resulting in a final contract amount of $3,016,188.45, and accept construction of Pressure Reducing Valve Station Replacement, Project No. 20021525, as of March 17, 2020.
body
II. DEPARTMENT CONTACTS
Dave Juarez, Director of Public Works 425-556-2733
Gary Schimek, Acting City Engineer 425-556-2742
Eric Dawson, Project Manager 425-556-2867
III. DESCRIPTION/BACKGROUND
|
Project Purpose This project replaced 10 Pressure Reducing Valve (PRV) Stations throughout Redmond. Background The City uses approximately 84 PRV stations to manage water pressure in the City’s distribution system. Many of these PRV stations were built in the 1960’s and 1970’s and are in need of refurbishment. The MOC staff have inspected and evaluated all of the City’s PRVs and generated a list of 27 PRVs that need to be rehabilitated or replaced. These PRVs have aged and degraded to a point that they no longer meet the City’s standard due to pipe corrosion, age, type of materials used, and environmental conditions. Corrosion is the main cause of degradation, but other issues include vault drainage and safe access. Ten (10) of the 27 valves were evaluated by MOC staff and Engineering staff and identified as a priority for replacement. Project Description This project abandoned and replaced 10 Pressure Reducing Valve Stations throughout Redmond. The construction provided for installation of new vaults, valves, piping and restoration of all street, sidewalk and landscape within the limits of construction. Construction began on June 25, 2018 and was completed on November 27, 2019. There was an approximate 3-month delay when the protective paint applied to the pipes by the contractor was improperly applied and had to be removed and reapplied. Budget The project was completed under budget. This project was budgeted as a high-risk construction project with a large contingency due to the underground construction required at 10 different sites. Underground construction can be risky due to the likelihood of encountering unexpected utilities. However, underground conflicts were generally not found and when they were the solutions were simple and inexpensive. Therefore, the project is transferring that contingency back to the Water CIP fund. |
IV. PREVIOUS DISCUSSIONS HELD
Council Actions / Communication
|
Date (MM/DD/YYYY) |
Action / Committee Presentation |
|
07/12/2016 |
Planning and Public Works Committee |
|
08/16/2016 |
Approve Consultant Services Contract |
|
04/10/2018 |
Planning and Public Works Committee |
|
04/17/2018 |
Approve Supplemental Consultant Agreement No. 2 |
|
04/17/2018 |
Award of Bid |
|
Today |
Accept Construction |
V. IMPACT
A. Service/Delivery:
This project reduced risk of pressure reducing valve failure and improves maintenance of the water system in Redmond.
B. Fiscal Note:
Estimated costs for the project are shown below.
Current Project Budget:
Water CIP $5,196,793
Total Funding $5,196,793
Estimated Project Costs:
Design Phase $656,758
Construction Phase $3,524,733
Total Estimated Project Cost $4,181,491
Budget Difference $1,015,302
Transfer To Water CIP Fund $1,015,302
VI. ALTERNATIVES TO STAFF RECOMMENDATION
None.
VII. TIME CONSTRAINTS
Following project acceptance, in accordance with RCW 60.28, the contract retainage will be released upon receipt of clearances from the Washington State Departments of Revenue and Labor and Industries, and a mandatory 45-day waiting period for filing claims and liens.
VIII. LIST OF ATTACHMENTS
A. Vicinity Map