HomeMy WebLinkAboutItem 10 - Storm SewerMEMO TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: BRUNO RUMBELOW, CITY MANAGER
MEETING DATE: NOVEMBER 1, 2022
SUBJECT: PURCHASE OF GEOPOLYMER STORM SEWER REHABILITATION
SERVICES AND APPROPRIATE FUNDING
RECOMMENDATION: City Council to consider the approval for the purchase of geopolymer
rehabilitation services of a 75" X 112" arch storm sewer line from IPR
South Central (IPR SC) and an ordinance appropriating the funds.
FUNDING SOURCE: Funds are available in the Storm Drainage Utility fund for an amount not
to exceed $181,470.
BACKGROUND: Within the Countryside Estates subdivision, constructed in 1986, there are
two corrugated metal arch pipes to convey storm water. The pipes run
approximately 700 feet from the City limit line to the Rustic Drive culvert
that was installed in 2014. The final 150 feet of the western arch pipe at
the downstream end has experienced corrosion to the point that soil from
adjacent property owners is infiltrating the pipe and causing sinkholes.
The City proposes to rehabilitate the western arch pipe with a geopolymer
liner installed by IPR SC. IPR SC will provide all labor, materials,
supervision and equipment to inspect, clean, apply the geopolymer
material and perform post -lining inspection.
Staff recommendation to award to IPR SC in the amount of $157,800 and
an additional 15% to cover field changes and inspection related services
for a total amount of $181,470. The contractor has 90 days to complete
the projects after notice to proceed.
This lining project provides a non-invasive structure solution to extend the
life of the pipe and prevent further structural issues.. This is a pilot
program and if it provides results as anticipated extension of this project
may be brought forward as needed to address future pipe degradation.
This purchase will be made in accordance with an existing interlocal
agreement with Houston -Galveston Area Council (H-GAC) as allowed by
Texas Local Government Code, Chapter 271 and Texas Government
Code, Chapter 791.
Bids were taken by the Cooperative and a contract was awarded to IPR
SC. The Public Works and Purchasing staff reviewed the contracts for
departmental specification compliance and pricing and determined that
the contracts would provide the best products and pricing for meeting the
needs of the City.
Staff recommends approval
ORDINANCE NO. 2022-082
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS, AUTHORIZING THE APPROPRIATION
OF $185,000 IN THE STORM DRAINAGE UTILITY FUND;
DECLARING AN EMERGENCY AND PROVIDING AN
EFFECTIVE DATE
WHEREAS, the City Council of the City of Grapevine desires to complete
geopolymer rehabilitation services for a corrugated metal arch pipe; and
WHEREAS, funding is available in the Storm Drainage Utility Fund; and
WHEREAS, all constitutional and statutory prerequisites for the approval of this
ordinance have been met, including but not limited to the Open Meetings Act and Chapter
211 of the Local Government Code; and
WHEREAS, the City Council deems the adoption of this ordinance to be in the best
interests of the health, safety, and welfare of the public.
NOW THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS:
Section 1. That all matters stated hereinabove are found to be true and correct
and are incorporated herein by reference as if copied in their entirety.
Section 2. That the City Council hereby authorizes the appropriation of $185,000
in the Storm Drainage Utility Fund for geopolymer rehabilitation services for a corrugated
metal arch pipe.
Section 3. That a copy of the revised FY 2022-2023 Capital Improvements Plan
budget document shall be kept on file in the office of the City Secretary.
Section 4. That the terms and provisions of this ordinance shall be deemed to be
severable, and that if the validity of any section, subsection, word, sentence or phrase
shall be held to be invalid, it shall not affect the remaining part of this ordinance.
Section 5. That the fact that the present ordinances and regulations of the City of
Grapevine, Texas, are inadequate to properly safeguard the health, safety, morals, peace
and general welfare of the inhabitants of the City of Grapevine, Texas, creates an
emergency for the immediate preservation of the public business, property, health, safety
and general welfare of the public which requires that this ordinance shall become effective
from and after the date of its final passage, and it is accordingly so ordained.
PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS on this the 1st day of November, 2022.
APPROVED:
William D. Tate
Mayor
ATTEST:
Tara Brooks
City Secretary
APPROVED AS TO FORM:
Matthew C.G. Boyle
City Attorney
Ordinance No. 2022-082 2
i
PURCHASE OF GEOPOLYMER STORM SEWER REHABILITATION SERVICES
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Prepared for Citv Council Meetine on Tuesday. November 1st. 2022
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