HomeMy WebLinkAboutItem 26 - Water System ImprovementsMEMO TO:
FROM:
MEETING DATE:
SUBJECT:
RECOMMENDATION:
City Council consider:
HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
ENGINEERING DESIGN SERVICES CONTRACT AMENDMENT
NO. 2 — WATER SYSTEM IMPROVEMENTS PROJECT
• approving Amendment No. 2 to the Water Engineering Design Services Contract
with Baird, Hampton & Brown, Inc. in an amount of $34,250.00 plus 10%
contingencies for the addition of wastewater improvements to the design contract,
• adopting an ordinance appropriating the necessary funds from the Released Sewer
Impact Fees for the wastewater improvements design,
• authorize staff to execute said contract amendment;
and take any necessary action.
FUNDING SOURCE:
Funds are available in the Released Sewer Impact Fees.
BACKGROUND:
The original Water System Improvements Project Design Services Contract and
Amendment No. 1, approved by City Council on April 16, 2013 and November 5, 2013
respectively, addressed needs at seven locations across the City that consisted of water
line replace ments/upsizing and installing new lines to improve system circulation and water
quality issues.
The specific locations targeted in this project were:
• Dooley Street; Silverlake Elementary to Dunn Street
• Dove Loop; Dooley Street to Boyd Drive
• Boyd Drive; Dove Loop to Northwest Highway
• College Street Crossing of Morehead Branch; Scribner Street to Ball Street
• Winding Creek Addition network connection to Woodlake Apartments Network
• Redbud Lane; replace existing 2" east of Dooley Street with 6" water line
• Cable Creek Court; connect existing dead end water line
R:\AGENDA\2014\11-18-14\Water Sewer Design Contract Amendment- BHB.doc November 18, 2014
During the design process, Staff has identified a sanitary sewer line that is in need of
manhole replacement due to numerous failures and is located in the vicinity of the Dove
Loop and Boyd Drive waterline project sites. The close proximity of this sanitary sewer line
to the current project limits, lends itself to an amendment to the current project.
A second significant sanitary sewer line failure has been discovered beneath SH 360 that
warrants immediate attention to expedite the repair.
Amending the existing design contract enables us to proceed quickly to address the new
problem sites.
Specifically,
16 sanitary sewer manholes along Wildwood Lane, Dooley Street and Dove Loop
Road are experiencing severe deterioration due to corrosive sewer gases. These
manholes will be replaced or rehabilitated.
• The existing sanitary sewer crossing under SH 360 is located just south of Stone
Myers Parkway. Holes have been discovered within the existing ductile iron pipe
and failure is imminent. This design will include a new casing pipe and sanitary
sewer line under TxDOT ROW to replace the existing line over a length of
approximately 500 LF.
These two additional sanitary sewer line segments will be added to the current design
contract and incorporated into the final construction contract.
Construction cost estimate for the two segments are:
Wildwood, Dooley and Dove Loop Manhold $ 83,000
SH 360 Sanitary Sewer Bore $356,000
Total
Staff recommends approval.
$439,000
R:WGENDA\2014\11-18-14\Water Sewer Design Contract Amendment- BHB.doc November 18, 2014
ORDINANCE NO. j,jKa P96J
J-quD'NG�
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS, REVISING THE ADOPTED CAPITAL
IMPROVEMENTS BUDGET FOR THE FISCAL YEAR
ENDING IN 2015, PROVIDING FOR THE TRANSFER OF
THE FUNDS; DECLARING AN EMERGENCY AND
PROVIDING AN EFFECTIVE DATE
WHEREAS, the City Council of the City of Grapevine desires to improve water and
wastewater systems throughout the City; and
WHEREAS, recent discoveries of two wastewater lines with major failures have
resulted in the need to expedite the design and construction of repairs and line
replacements; and
WHEREAS, funding for wastewater line repairs and replacement improvements is
not currently included in the FY 2014-2015 Capital Improvements Plan Budget.
ROW, 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 $37,675.00 be
appropriated from Released Sewer Impact Fees to the FY2014-2015 Capital
Improvements Plan budget for the necessary wastewater line repairs and replacement
improvements.
Section 3. That a copy of the revised FY 2014-2015 Capital Improvements Plan
budget document shall be kept on file in the office of the City Secretary and on the City of
Grapevine website.
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 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 18th day of November, 2014.
ATTEST:
ORD. NO. 2