HomeMy WebLinkAboutItem 17 - Water Treatment PlantMEMO TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: BRUNO RUMBELOW, CITY MANAGER
MEETING DATE: MAY 21, 2024
SUBJECT: ENGINEERING SERVICES CONTRACT FOR WATER TREATMENT
PLANT IMPROVEMENTS
RECOMMENDATION: City Council consider approving an engineering services contract for the
design of the Water Treatment Plant Improvements with Ardurra Group,
Inc. and approval of an ordinance appropriating the funds.
FUNDING SOURCE: Upon approval of the attached ordinance, funds will be available in the
Utility Enterprise Fund in the estimated of $2,785,000.
BACKGROUND: On November 15, 2022 council approved an engineering contract with
Ardurra, Inc. to perform a preliminary design report for the Water
Treatment Plant in the amount of $208,600.00. The design report included
developing a concept plan for the rehabilitation and replacement of aging
equipment and technology at the Water Treatment Plant. The original
plant was constructed in 1959 and expanded in 1980 and again in 1989.
No significant rehabilitation has taken place since that time. In addition to
typical repairs, some treatment processes need to be improved to
continue to meet TCEQ requirements.
This contract is for the final design of the needed improvements at the
Water Treatment Plant as follows:
• Replace Clarifier Equipment in Plants 1 and 2.
• Restoration of Flocculation Structure in Plant 1
• Replacing the lead pipe joints in the filter gallery to meet water
regulations
• Replace with updated underdrain blocks and add air scour technology in
filters to accommodate optimized filter media for better treatment
• Replace different sized header pipe' with a continuous 24-inch pipe from
Plants 1, 2 and 3 and reduce chlorine feed point from 3 to 1
• Provide additional filtering capacity to meet demand and improve
reliability
• Rehabilitate Clear Wells No. 1, 2, 4 and 5 and replace Clear Well No. 3
• Preliminary Engineering Report for the removal of PFAS as recently
mandated by the Environmental Protection Agency
The cost for engineering services will be $2,784,355 (rounded to
$2,785,000) for design and related construction phase services. The
engineer's opinion of probable cost for the Water Treatment Plant
Improvements is $18,000,000.
The design and construction are anticipated to take approximately 60
months from the notice to proceed. A construction contract will need to be
brought before City Council at the conclusion of the design phase.
Construction of improvements will begin as soon as possible after final
design as permitting through regulatory agencies. A design to treat the
water for PFAS "forever chemicals" will also be brought before City
Council for consideration.
The Ardurra Group, Inc. is very capable and has provided this type of
design service throughout the state of Texas. The principal engineer on
the project has worked with the City of Grapevine in the past with very
good results.
Staff recommends approval.
ORDINANCE NO. 2024-041
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS, AUTHORIZING THE APPROPRIATION
OF $2,785,000 IN THE UTILITY ENTERPRISE CAPITAL
PROJECTS FUND; DECLARING AN EMERGENCY AND
PROVIDING AN EFFECTIVE DATE
WHEREAS, the City Council of the City of Grapevine desires to complete the
design for improvements at the Water 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 the appropriation of
$2,785,000 in the Utility Enterprise Capital Fund for engineering design services at the
Water Treatment Plant.
Section 3. That a copy of the revised FY 2023-2024 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 21st day of May, 2024.
APPROVED:
William D. Tate
Mayor
ATTEST:
Tara Brooks
City Secretary
APPROVED AS TO FORM:
Matthew C.G. Boyle
City Attorney
Ordinance No. 2024-041 2