HomeMy WebLinkAbout01-28-19 City Commission Packet Materials - C9. Res 5010, Authorize CO 3 to the WRF Small Works Construction ProjectCommission Memorandum
REPORT TO: Honorable Mayor and City Commission
FROM: Brian Heaston, Senior Engineer
Shawn Kohtz, Interim Director of Public Works
SUBJECT: Resolution 5010 Authorizing Change Order No. 3 to the WRF Small Works
Construction Project
MEETING DATE: January 28, 2019
AGENDA ITEM TYPE: Consent
RECOMMENDATION: Approve Resolution 5010 authorizing Change Order No. 3 to the
WRF Small Works Construction Project.
BACKGROUND: Attached is Resolution 5010 and Change Order No. 3 for the above
referenced project. The change order modifies the construction contract by adding in new work
to install a new condensing boiler on the WRF heat loop. The new condensing boiler is
necessary to provide additional heating capacity for the WRF heat loop system now that the
WRF is operating at 100% digester capacity with the successful rehabilitation of digester number
1 and digester number 2. Heat calculations for the WRF indicate that the existing heat loop
capacity is shy of meeting the full heat load of the plant with all three digesters running.
Adequate heat capacity is imperative to ensure the proper and continuous operation of all three
anaerobic digesters at the WRF during periods of extended cold weather. Should an extended
cold snap be experienced under current heat loop capacity, the plant would be short of heat thus
requiring at least one digester to be pulled out of service. Restarting digestion can be a finicky
process and is not recommended.
An opportunity exists to modify the WRF Small Works Project construction contract via change
order to add the new boiler installation to the construction contract. The work will be completed
by Williams Brother Construction, a qualified contractor currently bonded and insured to
perform construction work for the WRF. The boiler addition is designed by HDR Engineering,
who will also oversee construction to ensure compliance with plans and specifications.
The approved FY19 budget includes a CIP project for the wastewater fund at $250,000 for the
boiler addition (Project WW89 - ‘Heat Loop Optimization’. Change Order No. 3 increases the
contract price by $147,400.00 and extends contract time to July 1, 2019 for substantial
completion.
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FISCAL EFFECTS: The FY19 wastewater fund CIP includes project WW89 – Heat Loop
Optimization, which is allocated $250,000. Change Order No. 3 amends the contract price for
the WRF Small Works Construction project to $1,192,874.63. Sufficient capital funding exists
in the WRF budget to cover the total amended contract price.
ALTERNATIVES: As suggested by the Commission
ATTACHMENTS: Resolution 5010
Change Order No. 3
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COMMISSION RESOLUTION NO. 5010
A RESOLUTION OF THE CITY COMMISSION OF THE CITY OF BOZEMAN,
MONTANA, APPROVING ALTERATION/MODIFICATION OF CONTRACT WITH
WILLIAMS BROTHER CONSTRUCTION, LLC, SPOKANE, WASHINGTON
WHEREAS, The City Commission did, on the August 28, 2017, authorize award of the bid
for the WRF Small Works Construction Project to Williams Brother Construction, LLC, Spokane,
Washington; and
WHEREAS, Section 7-5-4308, Montana Code Annotated, provides that any such
alterations or modifications of the specifications and/or plans of the contract be made by
resolution; and
WHEREAS, it has become necessary in the prosecution of the work to make alterations
or modifications to the specifications and/or plans of the contract.
NOW, THEREFORE, BE IT RESOLVED by the City Commission of the City of
Bozeman, Montana, that the proposed modifications and/or alterations to the contract between the
City of Bozeman, a municipal corporation, and Williams Brother Construction, LLC, as contained
in Change Order No. 3, attached hereto, be and the same are hereby approved; and the City
Manager is hereby authorized and directed to execute the contract change order for and on behalf
of the City; and the City Clerk is authorized and directed to attest such signature.
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PASSED, ADOPTED, AND APPROVED by the City Commission of the City of
Bozeman, Montana, at a regular session thereof held on the 28th
day of January, 2019.
___________________________________
CYNTHIA L. ANDRUS
Mayor
ATTEST:
_____________________________________
ROBIN CROUGH
City Clerk
APPROVED AS TO FORM:
___________________________________
GREG SULLIVAN
City Attorney
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hdrinc.com
700 SW Higgins AvenueSuite 200Missoula, MT 59803‐1489
(406) 532‐2200
January 22, 209
Dear Barry,
The CPR No. 10 documentation is modified as follows. Signing of this Change Order No. 3 indicates and
understanding and compliance with these changes and is outlined in your attached quote.
Included all labor and equipment to furnish and install the boiler and appurtenances:
ClearFire CFC‐CE 2000MBH Boiler,
Taco VR25‐3 Pump
Taco Model ACUF‐400‐AF 4" Balancing Valve
Two position actuator with 24 V actuator to Combustion Air intake at the collar on the boiler
Header Sensor Kit to the boiler
Thermometer on the boiler inlet and the boiler outlet piping coming to and from the main
Concrete pedestal for the boiler
Discharge flue can be 8” diameter
Natural gas regulator for 8 psi to 14” WC is included Hydroiron quote, though not specifically
mentioned.
Boiler emergency shutdown tied into emergency button at exit.
Sincerely,
HDR Engineering
Coralynn L. Revis, PE
Project Manager
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