HomeMy WebLinkAboutItem 10 - Mustang Elevated Storage TankMEMO TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: BRUNO RUMBELOW, CITY MANAGERV---�
MEETING DATE: JULY 7, 2015
SUBJECT: ENGINEERING DESIGN AND CONSTRUCTION SERVICES
CONTRACT — MUSTANG ELEVATED STORAGE TANK
RECOMMENDATION:
City Council consider:
awarding an Engineering Design and Construction Phase Services Contract to
DeltaTek Engineering in the amount of $94,575.00 for the design and inspection
of structural repairs and the interior and exterior painting of the support column
and tank of the Mustang Elevated Storage Tank,
adopting an ordinance appropriating $104,032.50 for the contract award plus 10%
contingency to the FY 2014 — 2015 Capital Improvements Plan,
authorizing the City Manager to execute said contract, and
take any necessary action.
FUNDING:
Funds are available and programmed in the Water and Sanitary Sewer Released Impact
Fees and in the 2015 Utility Bond Sale.
Mustang Elevated Storage Facility was built in 1973 and has a tank storage capacity of
1,000,000 gallons of water. The support column and base and the elevated tank are
steel structures that require periodic painting. This tank was last emptied and painted in
2003.
Painting systems used on storage tanks typically last 12 to 15 years and additional life of
said paint systems can be achieved with periodic minor maintenance. All interiors of
tanks are inspected annually by a certified inspector with the use of scuba diving gear
checking the paint system for pitting and deterioration. In April 2015, staff had DeltaTek
perform a full inspection of this tank. The results of the inspection identified the need for
tank and support column repainting with some structural repairs to the support column
due to corrosion.
Additional modifications to the tank are necessary to meet various regulatory agency
regulations (TCEQ, AWWA, ANSI, OSHA) as well as to address operational
deficiencies. These modifications include replacing the roof vent with a new vandal
resistant vent, replacing the insect shield with one that will also shield from dust and
other particulate matter, new roof hatches, installing a new roof safety rail and an anti -
fall railing on all access ladders. The current opinion of estimated cost is $953,212.00
for construction of these improvements with an anticipated construction time of 240
days.
DeltaTek Engineering is a company that specializes in design and construction services
for ground and elevated water storage tanks. Staff has relied upon them to provide
construction assessment, design and construction inspection services to the City since
2001. They have a thorough knowledge of our water storage network and anticipate a
design time of 10 weeks from notice to proceed.
Staff recommends approval.
*RDINANCE NO.
9 on
r' r i N
NOW 191101,011 R 2 2 1 kyj91-
WHEREAS, the City Council of the City of Grapevine, Texas desires to maintain its
water infrastructure with regular maintenance, repairs and updates as necessary; and
WHEREAS, funding for the maintenance activities, and the design and construction
phase services relative to the repairs and updates needed for the Mustang Elevated
Storage Tank is not currently included in the FY 2014 -2015 Capital Improvements Plan
Budget; and
WHEREAS, maintenance, repairs and updates to the Mustang Elevated Storage
Tank is necessary to insure continued optimum operation of the tank and the City's Water
Distribution System.
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS:
Section 1. That all matters stated in the preamble of this ordinance are true and
correct and are hereby incorporated into the body of this ordinance as if copied in their
entirety.
Section 2. That the City Council hereby authorizes an amount of $104,032.50 be
appropriated from the Water and Sanitary Sewer Released Impact Fees and the 2015
Utility Bonds to the FY 2014-2015 Capital Improvements Plan budget for design and
construction phase services relative to the Mustang Elevated Storage Tank Rehabilitation
Project.
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 which requires that this ordinance shall take effect immediately from
and after its passage and it is accordingly so ordained.
PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS on this the 7th day of July, 2015.
ATTEST:
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