HomeMy WebLinkAboutContract 42509-CO1 t r
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FORT WORTH, City
ty of Fort Worth No,
Change Order Request
Project Name Milam Storm Drain Improvements City Sec# 42509
Client Project#(s) 00482
Project Description Drainage improvements for Milam and intersecting streets from Meadowbrook to Van Natta
Contractor Conatser Construction Change Order# L 1 Date 412fi1
2012
City Project Mgr.I Mike Perkins City Inspector Mark Owen
Dept. TPW Water Sewer y Select Da Type
YPe
Original Contract Amount 8591569.50 $859,569.50
CD
Extras to Date
Credits to Date
Pending Change Orders(in M&C Process)
Contract Cast to Date $859,569.50 - � 859 509.
$ 50 0
Amount of Proposed Change Order $2121349110' $0.66 $F.'00 $212,349.10
100
Revised Contract Amount 1,071,918.60 1 071 918.50 100
Anginal Funds Available for Change Orders $25,7$7,00 71 7$7.00
25 787.0
Remaining Funds Available for this CO $25,787,00
$25;787.00
Additional Funding(if necessary) $185,552,10 $186;562.'D
CHANGE ORDERS to DA TE(INCLUDING THIS ONE)AS%OF ORIGINAL CONTRACT 24,704/o
MAX A LL 0 WA BLE-CONTRA C T A MOUNT(ORIGINAL CONTRACT COST+25%) $1;074146 1.$8
JUSTIFICATION(REASONS)FOR CHANGE ORDER '
See Attached Page for Change Order Justification.
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It is understood and agreed that the acceptance of this Change Order by the contractor constitutes an accord and satisfaction and represents
in full(both time and money)for all costs arising out of,or incidental to,the above Change Order. p esents payment
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Justification (Reasons) for Change Order
During construction of the Milam Street Drainage Improvements Project, the existence of unusually high
moisture content was discovered in the soil beneath Milam Street and several cross streets. These wet
soil conditions were not anticipated and have led to significant "pumping" of the roadway base material
in areas of trench backfill and in paved portions of the street beyond the limits of the trench cut. It was
also determined during construction that the existing pavement was thicker than anticipated and
included a significant amount of concrete.
Temporary trench repair and Pulverize and Overlay (POL) pavement repair methods were planned for
this project. Due to the subsurface soil moisture problem and pavement/concrete thickness, it was
determined that the POL pavement repair could not be used and, even if it could, would likely result in
pavement failure and therefore would not be feasible,
This issue was discussed with City of Fort Worth TPW staff and a pavement repair method was
recommended that included removing the existing base material to a depth that would allow the
contractor to install Triax TX 140 Geogrid from edge of gutter to edge of gutter, 10-inches of roadway
flex base on top of the Geogrid, and a minimum of 2-inches of HMAC surface course pavement. It was
also recommended that a sub-surface drain be installed on the backside of the west curb line on Milam
Street in an attempt to remove excess ground water that appears to be moving from the higher ground
on the west side towards the lower ground on the east side of the street.
These changes to the contract also include deletions from the original contract for work not required
due to the revised pavement repair plan as well as for unused Utility Adjustment Repair costs.
Other additions to the original contract include the unanticipated replacement of 93-feet of 8-inch
sanitary line with related utility adjustments, water line service connections related to a water line
adjustment, and items or additional quantities that were not previously accounted for.
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M/WBE Breakdown for this Change Order
MWBE Sub Type of Service Amount for this CO
Robert Granados Haul Off $17,000.00
Total $17,000.00
Previous Change Orders
CO# DATE.- AMOUNT
Total $0.00
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City of Fort Worth, Texas
Mayor and Council Communication
COUNCIL ACTION: Approved on 6/12/2012
DATE: Tuesday, June 12, 2012 REFERENCE NO.: **C-25649
LOG NAME: 20MILAM_STORM_DRAINAGE C01 00482
SUBJECT:
Authorize Execution of Change Order No. 1 with Conatser Construction TX, LP, in the Amount of
$212,349.10 to City Secretary Contract No. 42509 for the Milam Storm Drain Improvements Project for a
Total Contract in the Amount of$1,071,918.60 (COUNCIL DISTRICT 5)
RECOMMENDATION:
It is recommended that the City Council authorize the execution of Change Order No. 1 with Conatser
Construction TX, LP, in the amount of$212,349.10 to City Secretary Contract No. 42509 for a total
contract in the amount of$1,071,918.60.
DISCUSSION:
On October 25, 2011, (M&C C-25242) the City Council authorized the award of a contract to Conatser
Construction TX, LP, (Conatser)for this project.
The majority (91 percent) of the cost of the change order recommended by this M&C is associated with an
unexpected groundwater condition encountered at the site that necessitates additional construction
measures to protect the integrity of several sections of reconstructed street. Other items covered in this
change order include: water and sewer line adjustments needed due to unforeseen conditions discovered
during construction and the normal quantity adjustments in unit cost bid items that occur near the end of
construction projects.
The net effect of the proposed Change Order is as follows:
Original Contract Amount AMOUNT
$ 859,569.50
Proposed Change Order No. 1 $ 212.349.10
Revised Contract Amount $110 71,918.60
Costs for the implementation of Change Order No. 1 will be funded by the Storm Water Capital Project
Bond Fund.
Conatser Construction TX, LP, is in compliance with the City's M/WBE Ordinance by committing to an
additional 8 percent M/WBE participation on this Change Order. The City's goal on this change order is 8
percent.
This project is located in COUNCIL DISTRICT 5, Mapsco 80F.
FISCAL INFORMATION /CERTIFICATION:
The Financial Management Services Director certifies that funds are available in the current capital
Logname: 20MILAM_STORMDRAINAGE_CO1_00482 Page 1 of 2
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budget, as appropriated, of the Storm Water Capital p tal Projects Bond Fund.
FUND CENTERS:
TO FundlAccount/Denters FROM Fund/Accoun
tlCenters
P227 541200 205280048283 $212,349.10
CERTIFICATIONS:
Submitted for City Mana er's Office by: Fernando Costa (6122)
Originatina Department Head: Douglas W. Wiersig (7801)
Additional Information Contact: Michael Perkins (2748)
ATTACHMENTS
1. 00482-Milarn-A raved MWBE COm fiance. df CFW Internal
1. f }
2. FAR-04008
d (CFW Internal}
8• M AND C OQ4Q2 (Public)
4. P227 00482 available funds. df (CFW Internal)
5. P227-485249•-2012899901OO.doc (CFW Internal)
Logname: 20MILAM—STORM__DRAINAGE CO1 09482
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