HomeMy WebLinkAboutAecom Technical Services-8/12/2013AECOM 319-232-6531 tel
501 Sycamore Street 319-232-0271 fax
Suite 222
Waterloo, Iowa 50703
www.aecom.com
CITY OF WATERLOO
4111 STREET BRIDGE AND WALL REPAIRS
SUPPLEMENTAL AGREEMENT NO. 1
WHEREAS, a Professional Service Agreement was entered into by City of Waterloo (Client), and
AECOM Technical Services, Inc. (ATS), of Waterloo, Iowa, dated January 28, 2013, for slope protection
repairs at the west end of the Fourth Street Bridge, in addition to riverwall repairs for approximately 95
feet of length below the west end of the bridge; and
WHEREAS, the Client and ATS now desire to enter into Supplemental Agreement No. 1 to investigate
the rehabilitation of the 4th Street Walkway Canopy Bridge over the Cedar River and prepare a
conceptual design report.
NOW THEREFORE, it is mutually agreed to amend the original Professional Service Agreement as
follows:
1. PROJECT DESCRIPTION
The project is described as investigation and rehabilitation of the 4th Street Walkway Canopy
Bridge over the Cedar River.
II. SCOPE OF SERVICES
The Scope of Services will encompass and include all detailed work, services, materials,
equipment, personnel and supplies necessary to provide structural investigation, preliminary
evaluation and design of alternatives for rehabilitation, painting, development of cost estimates,
meetings and the preparation of a conceptual design report for the project.
The Scope of Services for the project is further defined below:
Task 1 - Rehabilitation to Fourth Street Walkway Canopy Bridge. The 4th Street Walkway
Canopy Bridge was designed in 1975 and constructed in 1976. The side windows of the
canopy have since been removed. In 1998 the 4th Street Bridge, including the canopy frame,
was repainted. Based on the as -built notes from this set of plans, the canopy frames were not
blasted to bare metal prior to painting. Additionally, there is a note regarding overspray paint
problems and that additional containment will be necessary on future contracts involving
painting. Over the past 37 years, the steel has deteriorated and the entire canopy is in need of
repairs, as well as repainting. The rehabilitation of the canopy is required in order for this
walkway to continue as a gateway link between each side of the Cedar River. Ritland and
Kuiper Landscape Architects will assist in developing enhancements for the bridge, including
the proposed color for the bridge, and lighting recommendations. The following tasks represent
the investigation of the existing canopy and preparation of a conceptual design report identifying
recommendations for rehabilitation.
a. Field investigation of the existing canopy to determine condition and extent of
deterioration in the canopy frame members and to determine condition and extent of
deterioration of the concrete walls below the canopy frames. The field investigation will
also review the condition of the existing canopy lighting.
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b. Collect representative paint chips from the canopy frame and have them
tested for presence of the eight priority metals (arsenic, barium, cadmium,
chromium, lead, mercury, selenium, silver). Collect concrete samples from the
walkway wall sections and have them tested for the presence of deicing
material content.
c. Evaluate replacement of the pedestrian lighting system and the addition of a
decorative accent lighting system as replacements for the existing canopy
lighting system.
d. Evaluate locations and potential use of planters associated with the canopy.
e. Coordinate with Main Street Waterloo to determine new paint color for interior
and exterior of canopy. Additional potential enhancements to the bridge,
including decorative lighting and the use of planters, will also be reviewed with
Main Street Waterloo.
f. Prepare cost estimates for repairs, lighting alternates, enhancements and
repainting of the walkway canopy. The cost estimates will include removal and
replacement of the window panels.
Task 2 - Conceptual Design Report. Provide a conceptual design report identifying the
field investigation, testing program, lighting alternatives, proposed repairs, paint color,
and other enhancements and provide recommendations for the repair, upgrade and
repainting of the existing walkway canopy.
Task 3 - Project Administration and Meetings. This task includes project
administration, coordination and meetings throughout the project development. This
task also includes meetings with City staff and Main Street Waterloo, in addition to
general project administration. We anticipate a total of six (6) project meetings. The
following identifies tasks leading to the completion of project administration, meetings
and coordination during the design phase of the project.
a. Project Meetings
b. Project Administration
III. COMPENSATION
Compensation for the Services shall be on an hourly basis in accordance with the hourly fees
and other direct expenses in effect at the time the services are performed. Total compensation
is an estimated fee of Thirty -Five Thousand Five Hundred Dollars ($35,500.00) and shall be
segregated from the fees estimated for Part VI of the original agreement.
IV. In all other aspects, the obligations of the Client and ATS shall remain as specified in the
Professional Services Agreement dated January 28, 2013.
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IN WITNESS WHEREOF, the parties hereto have executed this Supplemental Agreement No. 1 as of
the dates shown below:
AECOM TECHNICAL SERVICES INC.
Dou
Associate
hindel, P.E.
ice President
CITY OF TERLOO, IOWA
Date August 13, 2013
By Date
Ernest G. Clark
Mayor
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