HomeMy WebLinkAboutAecom Technical Services-11/25/2013mayor
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CITE OF WATERLOO IOWA
WASTE MANAGEMENT SERVICES
3505 EASTON AVE. WATERLOO, iA 50702 {.319) 291-4553 FAX (319) 291-45523
PARR`,' P. SG'Sm T H S°:1PERNTENDENT
Council Communication
City Council Meeting: 11/25/2013
Prepared: 11/20/2013 2� J�
Dept. Head Signature
# of Attachments:
SUBJECT: Supplemental Agreement No.1 WPCF Belt Press Addition City
Contract 697
Submitted by: Larry N. Smith
Recommended City Council Action: Approval of Supplemental Agreement No. 1 for
the addition of electrical upgrades, heating, ventilating and air conditioning
improvements to the Belt Filter Press Building and amend the original Professional
Service Agreement dated April 24, 2013,
Summary Statement: A Professional Service Agreement was entered into by the City
of Waterloo and AECOM Technical Services Inc. dated April 24, 2013 for design and
bidding services for the addition of a belt press and related equipment and now wishes
to enter into Supplemental Agreement No. 1 for additional engineering services.
Expenditure Required: $55,000.00
Source of Funds: Sewer Bonds
Policy Issue:
Alternative:
Background Information:
WE'RE WORKING FOR YOU!
An Equat Opportunity/Affirmative Action Employer
A®COM
November 20, 2013
Mr. Larry Smith
Water Pollution Control Facilities
3505 Easton Avenue
Waterloo, Iowa 50703
Subject: Additional Design Services for the
Belt Press Addition at the
Waterloo WPCF
AECOM #60300979
Dear Larry,
AECOM 319-232-6531 tel
501 Sycamore Street 319-232-0271 fax
Suite 222
Waterloo, Iowa 50703
www.aecom.com
Enclosed please find two (2) originals of Supplemental Agreement No. 1 to the above -referenced project. This
Supplemental Agreement adds the electrical upgrade and heating, ventilating and air conditioning improvements
to the Belt Filter Press Building that we have discussed with you and your staff.
Please return one (1) signed copy (original signature) to our office upon approval.
If you have any questions or need anything further in this matter, please let us know.
Yours sincerely,
Robert E. Bamsey,
Enclosures: As Noted
c: Ms.. Suzy Schares (w/enclosure)
P:\60300979\300-Communications\11-20-13 Is SA1-BeltFlter Press.docx
A COM
AECOM 319-232-6531 tel
501 Sycamore Street 319-232-0271 fax
Suite 222
Waterloo, Iowa 50703
www.aecom.com
CITY OF WATERLOO
WATERLOO EASTON WPCF BELT PRESS ADDITION
SUPPLEMENTAL AGREEMENT NO. 1
WHEREAS, a Professional Service Agreement was entered into by the City of Waterloo (Client), 715
Mulberry Street, Waterloo, Iowa, and AECOM Technical Services, Inc. (ATS), 501 Sycamore Street,
Suite 222, Waterloo, Iowa, dated April 24, 2013, for design and bidding services for the addition of a belt
press and related equipment at the Easton Water Pollution Control Facility (WPCF); and
WHEREAS, the Client and ATS now desire to enter into Supplemental Agreement No. 1 to include
additional engineering services.
NOW THEREFORE, it is mutually agreed to amend the original Professional Service Agreement as
follows:
I. PROJECT DESCRIPTION
This supplemental agreement will include engineering services associated with heating,
ventilating and air conditioning (HVAC), and electrical improvements at the sludge filter
(dewatering) building (Structure 330) at the WPCF.
11. SCOPE OF SERVICES
The Scope of Services for the additional engineering services will include the following:
Heating and Ventilation Upgrade for Belt Filter Press Room in Dewatering Building
No. 330:
a. Proposed ventilation design improvements will be based on NFPA 820 for dewatering
buildings containing gravity belt thickeners and areas containing the storage of
dewatered sludge.
b. The NEC Area Electrical Classification will remain "Unclassified."
c. Design improvements will provide continuous ventilation rate of 6 Air Changes per Hour
(ACH) as required in accordance with NFPA 820 Chapter 9 for both the Belt Press
Room and Truck Loading Station.
Chapter 9.3.3 allows recirculation up to 75 percent of the exhaust air -flow for
unclassifted areas, provided that the following criteria are met:
1) The recirculated air and outside airflow rate total is not less than 6 ACH.
2) Recirculation does not occur during occupancy.
3) Recirculation does not occur whenever a combustible gas detector senses a
lower explosive limit of 10 percent or greater.
d. Air -flow Requirements:
1) - Belt Press Room will be designed with ventilation rate of 9,100 CFM outside
air.
AZ.COM
)
Page 2
Truck Loading Station will be designed with ventilation rate of 1,900 CFM
outside air.
e. HVAC Design Improvements will consist of:
1) Demolition plan for removing existing make-up air unit, supply ductwork,
outside air louver and gas-fired heaters.
2) Plans and specifications for new 11,000 CFM direct -fired make-up air unit to
serve both the Belt Press Room and Truck Loading Station mounted outside at
grade (possibly two separate units).
3) Plans and specifications for new supply and retum air ductwork distribution
layout and supply air grilles.
4) Evaluation of existing exhaust fan capacities and rebalance of air flows, if
necessary.
5) Plans and specifications for roof exhaust fan and exhaust hood over new 3rd
belt press.
6) Plans and specifications for roof exhaust fan over Truck Loading Station.
7) Plans and specifications for exhaust ductwork layout.
8) Plans and specifications for lesser capacity gas-fired unit heater for
supplemental heat.
9) Specifications for HV controls, including ventilation recirculation during
unoccupied hours
Secondary Electrical Service Upgrade - Belt Filter Press Room Dewatering Building 330
a. Revise two incoming underground services (main/tie/main) from a 480V, 3-phase, 3 -
wire distribution system to a 277/480V, 3-phase, 4 -wire solidly grounded distribution
system.
b. Revise main service disconnects and MCC power distribution equipment inside
building.
1) Electrical Engineer to coordinate design and scope of supply with utility.
2) Electrical Engineer to conduct site visit to meet with Client staff and collect
data. Client to provide electrical staff to meet with ATS engineer for one day
during investigation.
3} Electrical Engineer to design plan revisions to power distribution system inside
and outside building.
4) Prepare specifications for bid documents.
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 Fifty -Five Thousand Five Hundred Dollars ($55,500.00) and shall be
integrated with 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 April 24, 2013.
Page 3
IN WITNESS WHEREOF, the parties hereto have executed this Supplemental Agreement No. 1 as of
the dates shown below.
AECOM TECHNICAL SERVICES INC.
By
I
!/,,►/
Douglas W. S hin. I, P.E.
Associate Vice Frresident
CITY OF WATERLOO
By
1 e"7,,
Date November 19, 2013
Date
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