HomeMy WebLinkAboutContract 39968-A3 (2)AMENDMENT NO. 3
THE STATE OF TEXAS § CITY SECRETARY CONTRACT NO. 319
(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"' 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. 3 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:
Article I of the Contract is amended 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.
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 $37,985.00.
All other provisions of the Contract which are not expressly amended herein shall remain
in full force and effect.
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH, TX
EXECUTED
2011, in Fort Worth,
ATTEST:
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on thisL . day of
Tarrant County, Texas, 7
Hendrix, Cry Secretary
APPROVAL RECOMMENDED:
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S. Frank Crumb, P.E.
Director, Water Department
RJN Crroup, Inc.
ENGINEER
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APPROVED AS TO FORM AND LECrALITY:
Assistant City Attorney
APPROVED:
Fernando Costa
Assistant City Manager
r n group
7ho Choice for Collottion System Solutions
January 26, 2011
Mr. Chris Harder, P.E.
Engineering Manager
Fort Worth Water Department
1511 l l m Avenue
Fort Worth, Te,cas 76102
RE: Amendment No. 3—Wholesale Wastewater Meter Station Validation Testing
Dear Mr. Harder:
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RJN Group Inc appreciates the opportunity to provide this scope and amendment cost for the con#inuation of
theee (3) temporary flow meters for a thirty 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
chland Hills flow meters. The scope of services is as follows. Ri
Meetins?s —The Engineer will attend periodic meeting with the Fort Worth Water Department and City Of
Richland Hill representatives to discuss the results of the temporary monitoring.
Data Collection— It is anticipated that each flow meter will be maintained for a period of thirty 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 Lion
Units
Total
Meetin s
2 EA
$ 2,880.00
Meter Maintenance and Calibration 3 Sites
3 EA
$ 5,944.00
Data Review
LS
$ 3,290400
Total
$12 114.00
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.
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Hugh M. Kelso
Vice President