HomeMy WebLinkAboutItem 16 - Wastewater Treatment PlantMEMO TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: BRUNO RUMBELOW, CITY MANAGER
MEETING DATE: JUNE 17, 2025
SUBJECT: SECOND AMENDMENT TO THE WASTEWATER TREATMENT PLANT
IMPROVEMENTS AND APPROPRIATION ORDINANCE
RECOMMENDATION: City Council to consider the second amendment to the engineering
contract for the design of the Train 2 and Train 3 improvements at the
Wastewater Treatment Plant with Provenance Engineering, LLC and
approval of an ordinance appropriating the funds.
FUNDING SOURCE: Upon approval of the attached appropriation ordinance, funds will be
available in the Utility Enterprise Fund in an amount of $175,000
BACKGROUND: The City has a contract with Provenance Engineering LLC (Provenance)
to design improvements at the Wastewater Treatment Plant to include:
Train 1 filter replacement
Train 2 clarifier rehabilitation
Train 2 and Train 3 aeration basin rehabilitation/improvements
These contracts were approved by council on January 18, 2022 and
February 15, 2022.
During the design process, the Train 2 clarifier reached a point where it
needed to be replaced immediately. The clarifier portion of the project was
broken out of the design set and fast tracked for design and bidding as a
stand-alone project.
As the main project design developed, staff determined additional
improvements are necessary and/or complementary to the current work
effort. Including doubling the capacity of the proposed Train 1 filter
replacement, safety improvements in the plant: (sidewalk, pedestrian
bridging across aeration basins, handrails, and guardrails) and
replacement of weirs, blower manifolds, activated sludge lines, and
diffusor modifications in the aeration basins.
Amendment #1 was approved by council on October 3, 2023, in the
amount of $283,000 for the additional design.
Amendment #2 is for the completion of design, bidding and additional
construction phase services for the Train 2 and Train 3 aeration basin
rehabilitation/improvements and plant water improvements.in the amount
of $158,960. Total funding with a 10% contingency is $174,856 (rounded
to $175,000)
Staff recommends approval.
ORDINANCE NO. 2025-027
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS, AUTHORIZING THE APPROPRIATION
OF $175,000 IN THE UTILITY ENTERPRISE FUND;
DECLARING AN EMERGENCY AND PROVIDING AN
EFFECTIVE DATE
WHEREAS, the City Council of the City of Grapevine desires to complete Train 2
and Train 3 improvements at the Wastewater Treatment Plant; and
WHEREAS, Funding is available in the Utility Enterprise Capital 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 $175,000 to be appropriated
from the Utility Enterprise Fund for the Train 2 and Train 3 improvements at the Wastewater
Treatment Plant.
Section 3. 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 4. 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 17th day of June, 2025.
APPROVED:
William D. Tate
Mayor
ATTEST:
Tara Brooks
City Secretary
APPROVED AS TO FORM:
Matthew C.G. Boyle
City Attorney
Ordinance No. 2025-027 2