HomeMy WebLinkAboutContract 36510AMENDMENT NO. 1
STATE OF TEXAS $ CITY SECRETARY CONTRACT NO. IO
(No M&C Needed)
COUNTY OF TARRANT $
WHEREAS, the City of Fort Worth (City) and Neel -Schaffer,
Inc., (Engineer) made and entered into City Secretary Contract No.
35439, (the Contract) which was authorized by the City Council by
M&C C-22156 on the 5th day of June 2007; and
WHEREAS, the Contract involves engineering services for the
following project:
Engineering Design Services: Expanding Study on Grassland Court
Drainage Improvements, Project No. 00479; DOE No. 5419
WHEREAS, it has become necessary to execute Amendment No. 1
to said Contract to include an increased scope of work and revised
maximum fee;
NOW THEREFORE, City and Engineer, acting herein by and
through their duly authorized representatives, enter into the
following agreement which amends the Contract.
1.
Article I of the Contract is amended to include the
additional engineering services speced in a proposal letter
dated September 26,2007, a copy of which is attached hereto and
incorporated herein. The cost to City for the additional design
services to be performed by Engineer total $14,600.00.
2.
Article II of the Contract is amended to provide for an
increase in the maximum fee to be paid to Engineer for all work
and services performed under the Contract, as amended, so that the
total fee paid by the City for all work and services shall not
exceed the sum of $77,390.00.
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3.
All other provisions of the Contract which are not expressly amended
herein shall remain in fulliifo ce and effect.
EXECUTED on this the I day of , 2008, in Fort Worth,
Tarrant County, Texas.
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City
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APPROVAL RECOMN�NDED:
A. Douglas Rademaker, P.E.
Director, Department of
Engineering
Neel -Schaffer, Inc.
ENGINEER
By:
Name: James P. Amick, P.E.
Engineer ManaZ;:L
512 ,X. Main Street, Suite 415
Fort Worth, Texas 76102
APPROVED AS TO FORM
Assistant ,�X`t��tto
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APPROVED:
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Marc A.
Assistant City Manager
CEELNmSCHAFFER
engineers
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scientists
September 26, 2007
landscape
architects
Mr. Joseph Bergeron
City of Fort Worth, Department of Engineering
1000 Throckmorton
Fort Worth, Texas 76102
Reference: Grassland Court Drainage Study Contract Amendment 1 for Additional Services
Dear Mr. Bergeron:
Neel -Schaffer, Inc. (NSI) offers additional Professional Engineering Services for this project.
These additional services are required due to the expanding study on Grassland Court as
discussed most recently on September 14, 2007. This Engineering Services Contract Amendment
includes a detailed scope of additional services attached to this letter. NSI proposes to provide
the attached scope of additional services for the lump sum of $14,600.00. All additional services
proposed will be performed in accordance with the original contract dated June 22, 2007. A
portion of this work will be completed by ANA Consultants our M/WBE Subconsultant. Their
share will be 41.10% or $6,000.00,
This Amendment, consisting of one page; and the attached Additional Scope of Services,
consisting of two pages, represent the entire amendment to the original agreement between the
City of Fort Worth and Neel -Schaffer, Inc. If the terms of this Amendment are acceptable, please
execute both copies and return one to our office to begin the additional services.
If you have any questions or we maybe of further service, please call me at 817/909-2807.
Sincerely,
NEEL-SCHAFFER, INC.
James P. Amick, P.E.
Engineer Manager
Attachment
ACCEPTED: CITY OF FORT WORTH
BY:
TITLE:
DATE:
P:Uobs\6638 - FW Drainage -Grassland &Academy\Admin\Contract\Amendment 1\Amendment 1 Letter.doc
Additional Scope of Services
Amendment 1
Drainage Study for Grassland Court and Academy Boulevard
City of Fort Worth Project No. 00479
Additional work is necessary for the drainage study on Grassland Court. The original project was
described as flooding on Grassland Court from a large linear open area of about 20 acres that drains
from the north and east towards Grassland Court. From Grassland Court, a Swale drains to a culvert
under Crosswind Drive located behind the houses on the south side of Grassland Court. The swale
that wrapped around the cul-de-sac was to be investigated for draining the open area.
After collecting data on this area, performing hydrologic and hydraulic calculations, and preparing
exhibits; it was noted that significantly more area drains to this culvert than was included in the
original scope. Two existing closed drainage systems from Skylake (at Quail Ridge and Woodside
Hill) outfall into the open area and the swale. Additionally a future closed drainage system is
planned from Skylake (at Westwind). Because the existing streets that intersect Skylake (Quail
Ridge, Woodside Hill and Westwind) are steep, it is likely that storm water may bypass the two
existing and one future storm drain systems and flow into the swale overland between houses.
Therefore it will be necessary to perform street, inlet and storm drain calculations on these four
streets.
During a meeting with residents about the ongoing Transportation &Public Works emergency
clearing and channelization project it was learned that flooding has occurred on multiple occasions
downstream of Crosswind Drive. Therefore it is necessary to extend the study downstream through
the culvert at Crosswind all the way to Eagle Mountain Lake.
The total study area has increased from about 20 acres to about 90 acres. Additionally it was
proposed to split up the Grassland Court study from the Academy Boulevard study and prepare
each as independent submittals.
Upon receipt of an executed amendment, the Engineer will perform the following tasks:
• Attend a maximum of three coordination meetings onsite dealing with the ongoing emergency
clearing and channelization project.
• Add surrounding streets (portions of Skylake, Quail Ridge, Woodside Hill and Westwind) and
their drainage systems to the study.
• Extend the study downstream through the Crosswind culvert and to its outfall into Eagle
Mountain Lake. An assumption of free outfall has been made for this culvert. Mitigating water from from the lake is not included in this study.
9/26/2007 P:Uobs\6638 - FW Drainage -Grassland & Academy\Admin\Contract\Amendment 1\Additionai Scope for Amendment l.doc Page I of 2
• Collect additional data on the two existing storm drain systems and the one future storm drain
system that discharge into the channel. Collect additional data on the two 36" culverts that
drain under Crosswind Drive to the lake.
• Perform one additional site visit to review the offsiLe contributing areas and systems.
• Survey the inlet tops and outfall0 of the two existing storm drain systems, and the existing
culvert.
• Develop hydrologic models of the additional study areas including an expanded drainage area
map and the required parameters to determine the 100-year rational method drainage
calculations.
• Update hydraulic calculations based on expanded study area. Develop a hydraulic model using
a Manning solution of a combination of a closed system and an open system as improvements
for the study area that will contain the 100-year discharge from the Crosswind Drive culvert
upstream to a point near the Quail Ridge outfall. It will have a headwall to capture the flow
from the open area north and east of Grassland Court. The system will carry the capacity flow
from the existing system in Quail Ridge and the 100 year flow from the open area at the
upstream headwall. The Quail Ridge system will be extended and connected to this proposed
system at a manhole. The proposed system will extend slightly farther upstream to capture the
open area. The future system in Westwind will be extended and will carry the capacity flow to
another manhole. Local and overflow storm water between these two manholes will be carried
in a swale (above the closed system) and captured in a drop inlet. The flow from the Woodside
Hill system will be captured similarly. The remaining flow in the open area will be captured in
another drop inlet upstream from the culvert. Next the flow in Crosswind will be captured in
additional inlets near the low point. It may be necessary to put a storm drain system in
Crosswind to avoid having all of the storm water collecting near the low point at the culvert.
Finally the culvert will be improved to carry the discharge in conjunction with another swale
from Crosswind to the lake. The City's two -foot topographic data will be used to generate
grades for the system.
• Generate conceptual cost opinions and exhibit.
• Provide results of analysis in a brief letter report.
9/26/2007 P:Uobs\6638 - FW Drainage -Grassland & Academy\Adn�i\Contract\Amendment 1\Addi[ional Swpe for Amendment l.doc Page Z of 2
City of Fort Worth, Texas
Mayor and Council Communication
SUBJECT:
Authorize Execution of Engineering Agreement with Neel Schaffer, Inc., for the Academy Boulevard
Culvert Improvements and Grassland Court Drainage Improvements Study (Projec# No. 00479) and
Adopt Appropriation Ordinance
RECOMMENDATION:
It is recommended that the City Council:
1. Authorize the transfer of $72,209.00 from the Storm Water Utility Fund to the Storm Water Capital
Projects Fund;
2. Adopt the attached appropriation ordinance increasing estimated receipts and appropriations in the
Storm Water Capital Projects Fund in the amount of $72,209.00; and
3. Authorize the City Manager to execute an engineering agreement with Neel Schaffer, Inc., in the amount
of $62,790.00 for Academy Boulevard Culvert Improvements and Grassland Court Drainage Improvements
Study.
DISCUSSION:
The Storm Water Management Program was established to reduce flooding in Fort Worth, preserve
stream, minimize water pollution and to operate the s#orm water system in a more effective manner to fully
comply with state and federal regulatory requirements. This will be accomplished by infrastructure
reconstruction and system maintenance, master planning, enhanced development review, and increased
public education and outreach.
The scope of this project includes the preparation of a drainage study that will provide recommendations for
the necessary improvements to the Academy Boulevard Culvert and Grassland Court drainage system to
allow for 100-year storm flow coverage.
Neel Schaffer, Inc., proposes to perform the necessary study work for a lump sum fee of $62,790.00. City
Staff considers this to be fair and reasonable for the scope of services proposed.
In addition to the contract amount, $9,419.00 is required by the Engineering Department for project
management.
Neel Schaffer, Inc., is in compliance with the City's M/WBE Ordinance by committing to 21 percent•M/V1/BE
participation. The City's goal on this project is 20 percent.
This project is located in COUNCIL DISTRICT 7.
Lo gname : 3 OACADEMY00479
Page 1 of 2
s
FISCAL INFORMATION/CERTIFICATION:
The Finance- Director certifies that upon approval of the above recommendations, and adoption of the
attached appropriation ordinance, funds v�rill be available in the current capital budget, as appropriated, of
the Storm Water Capital Projects Fund.
T� FundlAccountlCenters
1&2)P228 472069 2072800479ZZ $72,209.00
2)P228- 531350 207280047910 1 570.00
2�P228 531200.207280047916 $62,790.00
2�P228 531350 207280047916 6 279.OD
2)P228 531350 207280047920 1 570.00
FROM Fund/AccountlCenters
1jPE69 538070 0209206
�P228 531200 207280047916
Submitted for City Manager's Office by: Marc Ott (8476)
Originating Department Head• A. Douglas Rademaker (6157)
Additional Information Contact: Dena Johnson (7866)
$72,2os.00
$62.790.00
Logname: 30ACADEMY00479
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