Exhibit 1 - Agenda Information SheetCity of Denton
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AGENDA INFORMATION SHEET
DEPARTMENT: Procurement
DCM: David Gaines
DATE: April 19, 2022
SUBJECT
Consider adoption of an ordinance of the City of Denton, a Texas home-rule municipal corporation,
authorizing the approval of a first amendment to a professional services agreement between the City of
Denton and Weaver Consultants Group, LLC, amending the contract approved by Purchasing on December
27, 2021, in the not-to-exceed amount of $26,100.00; said first amendment to complete maintenance and
repairs of the Landfill Gas Collection and Control System (GCCS) at the City of Denton Landfill; providing
for the expenditure of funds therefor; and providing an effective date (RFQ 7109-024 – providing for an
additional first amendment expenditure amount not-to-exceed $49,198.34, with the total contract amount
not-to-exceed $75,298.34). The Public Utilities Board recommends approval (6 – 0).
INFORMATION/BACKGROUND
The City of Denton Landfill operates a Gas Collection and Control System (GCCS) and flare to process the
methane produced by the landfill. Solid Waste and Recycling executed a contract with Weaver Consultants
Group, LLC (WCG) in 2021 for their field crew to perform operations repairs and maintenance on the
GCCS. The wells require maintenance and “tuning” to reduce odor and the potential of oxygen intrusion
and to optimize gas extraction to maintain compliance with State and Federal Regulations.
During the process of performing the initial inspection of the flare and “tuning” of the wellfield in February
2022, the WCG field crew discovered several maintenance issues that need to be addressed. Various
components associated with the collection wells have deteriorated over time and need to be replaced. The
flare utilizes two flowmeters to control and measure the flow of gas and it was discovered that one of the
flowmeters needs to be replaced. Various maintenance activities also need to be performed including repairs
of the blowers, cleaning the condensate sump pumps, knocking out pot demister filter, flame arrestor
cleaning as well as reprogramming the flare computer for system optimization. Additionally, the air
compressor needs to be replaced due to damage that is beyond repair.
The original cost of the operation, monitoring, and maintenance contract was $26,100.00. This first
amendment is the result of maintenance and repair issues that were unknown at the time the original contract
was initiated. Amending the contract for the proposed $49,198.34 will enable additional maintenance and
repairs to be performed and facilitate the efficient operation of the flare and the GCCS. Having the same
consultant group perform the additional work will provide continuity and shorten the timeline of
completion.
City Hall
215 E. McKinney Street
Denton, Texas
www.cityofdenton.com
PRIOR ACTION/REVIEW (COUNCIL, BOARDS, COMMISSIONS)
On April 11, 2022, the Public Utilities Board (PUB) recommended this item to the City Council for
consideration.
RECOMMENDATION
Award Amendment No. 1 with Weaver Consultants Group, LLC, to complete maintenance and repairs of
the Landfill Gas Collection and Control System (GCCS) at the City of Denton Landfill, in a not-to-exceed
amount of $49,198.34, for a total amended contract amount of $75,298.34.
PRINCIPAL PLACE OF BUSINESS
Weaver Consultants Group, LLC
Ft Worth, TX
ESTIMATED SCHEDULE OF PROJECT
The project is estimated to be completed within 180 calendar days from the Notice to Proceed.
FISCAL INFORMATION
These services will be funded from the Solid Waste and Recycling budget account. If approved, the existing
PO#198946 will be amended to include the additional funding.
EXHIBITS
Exhibit 1: Agenda Information Sheet
Exhibit 2: Original Contract
Exhibit 3: LLC Members
Exhibit 4: Ordinance and Amendment 1
Respectfully submitted:
Lori Hewell, (940)-349-7100
Purchasing Manager
For information concerning this acquisition, contact: Ami Reeder, 940-349-8008.
Legal point of contact: Marcella Lunn at 940-349-8333.