HomeMy WebLinkAboutContract 39968-A4 (2)AMENDMENT N0.4
THE STATE OF TEXAS § CITY SECRETARY CONTRACT NO. (a$_ A4
(No M&C Needed)
COUNTY OF TARRANT §
WHEREAS, the City of Fort Worth (City} and RJN Group Inc., (Consultant) made and
entered into City Secretary Contract No. 39968, (the Contract) which was executed by the City
Manager on the 17"i day of March, 2010; and
WHEREAS, the Contract involves professional services for the following project:
Temporary Wastewater Flow Metering for Wholesale Customer Meter Validation
WHEREAS, it has become necessary to execute Amendment No. 4 to said Contract to
include an amended 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 annended to include additional temporary metering of
the Tarrant County Water Supply Corporation sanitary sewer line, as well as additional
validation metering of the Richland Hills South wholesale customer meter station,
through the month or March 2011.
Article II of the contract is amended to provide for an increase in the maximum
fee to be paid to the Consultant 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 $43,125,
All other provisions of the Contract which are not expressly amended herein shall remain
in full force and effect.
AFFlClAL RECORD
CITY SECRETARY
T. WORTH, TX j
EXECUTED on this
2011, in Fort Worth, Tarrant County, Texas,
ATTEST:
Macy Hendrix, Ci
APPROVAL RECOMMENDED:
�S. Frank Crumb, P.E.
Director, Water Department
RJN Group, Inc.
ENGINEER
N
ame:
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Vjc.E. ?xx lJe� "t
APPROVED AS TO FORM AND LEGALITY:
day of
Fernando Costa
Assistant City Manager
I - tflg3l
The Choice for Collection System Solutions
March 2532011
Mr. Chris Harder, P.E.
Engineering Manager
Fort Worth Water Department
1511 1 lth Avenue
Fort Worth, Texas 76102
RE: Amendment No. 4—Wholesale Wastewater Meter Station Validation Testing
www.rin.com
Dear Mr. Harder:
RJN Group Inc appreciates the opporthmity to provide this scope and amendment cost for the continuation of
two (2) temporary flow meters for a twenty five day period. The flow meters will be maintained in the Tarrant
County Water Supply Corporation sewer line to validate the accuracy of the Richland Hills and North
Richland Hills flow meters. The scope of services is as follows:
Data Collection— It is anticipated chat each flow meter will be maintained for a period of twenty five days.
Weekly site visits will be performed during the monitoring period. A velocity profile will also be obtained
during each calibration by measuring the instantaneous velocity at pre -defined depths, and then integrated to
derive an average for comparison to the meters calculated average velocity.
Data Review The engineers will use various analytical tools, such as hydrographs and scattergraphs to verify
the accuracy and precision of the equipment. A summary of the average flows for each site will be provided at
various intervals of the Project.
Compensation --Compensation for providing these services will be based upon the following rate table.
Descri tion �
Units
Total
itenance and Calibration 2 Sites
2 EA
$ 3310.00
wLS
RE
$ 1,830.00
$ 5,140.00
We thank you again for the opportunity and Look forward to working with you on this project. Should you
have any questions, please do not hesitate to contact me.
Sincerely,
RJN GROUP, INC.
/ram
Hugh M. Kelso
Vice President