C22-0540 Amend No. 1 Thunderbird Reservoir Upgrades

City of Glendale — Regular Meeting (2023-02-28)

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4/29/2021 
 
 
 
 
 
 
 
 
 
  C22-0540-1 
AMENDMENT NO. 001 
Thunderbird Reservoir Upgrades  
(CIP Project No. 212233.1, Contract No. C22-0540) 
 
This Amendment No. One (“Amendment”) to the Professional Services Agreement 
(“Agreement”) is made this ______ day of ________, 2023, (“Effective Date”), by and 
between the City of Glendale, an Arizona municipal corporation (“City”) and Wilson 
Engineers, LLC, an Arizona limited liability company authorized to do business in Arizona 
(“Contractor”). 
 
RECITALS 
 
A. 
City and Wilson Engineers (“Contractor”) previously entered into a Professional 
Services Agreeement, Contract No. C22-0540, dated May 25, 2022 (“Agreement”); 
and 
 
B. 
The study phase of the Thunderbird Reservoir Upgrades has been completed which 
included an assessment of the roof and its supporting structure, along with 
recommendations for their rehabilitation, assessment of potential mechanical and 
electrical improvements, and the selection of a Construction Manager at Risk 
(CM@R) to provide pre-construction services, cost estimates and construction of 
proposed improvements.   
 
C. 
Expanding the scope of work (under Exhibit B) under the original agreement will 
include the design for the recommended roof rehabilitation improvements, 
coordination with the CM@R, and construction administration services for roof 
rehabilitation along with the design of mechanical and electrical improvements for 
the Thunderbird Reservoir.  
 
D. 
City and Contractor wish to modify and amend the Agreement subject to and strictly 
in accordance with the terms of this Amendment. 
 
AGREEMENT 
 
In consideration of the mutual promises set forth herein and other good and valuable 
consideration, the receipt and sufficiency of which are hereby acknowledged, the City and 
Contractor hereby agree as follows: 
 
1. 
Recitals.  The recitals set forth above are not merely recitals but form an integral 
part of this Amendment. 
 
2. 
Term.  The term of the Agreement is extended for a two-year period from May 25, 
2023 through May 24, 2025, unless otherwise terminated or canceled as provided by 
the Agreement.  All other provisions of the Agreement except as set forth in this 
Amendment shall remain in their entirety.

4/29/2021 
3. 
Scope of Work. The work under this amendment will provide engineering and 
construction administration services as described in the attached  exhibits. 
 
4.  
Compensation.  Including allowances, the Thunderbird Reservoir Upgrades Study 
resulted in a previous compensation of $34,250. Including allowances, the 
Thunderbird Reservoir design and construction administration services for the roof 
rehabilitation project and the mechanical and electrical improvements will result in 
an additional increase in compensation of $457,685 and as shown in Exhibit D (for a 
total compensation, including allowances of $491,935).  
 
5. 
Insurance Certificate.  Current certificate will expire on January 1, 2024 and a new 
certificate applying to the extended term must be provided prior to this date to 
Materials Management and the Contract Administrator. 
 
6. 
Non-discrimination.   Contractor must not discriminate against any employee or 
applicant for employment on the basis of race, color, religion, sex, national origin, 
age, marital status, sexual orientation, gender identity or expression, genetic 
characteristics, familial status, U.S. military veteran status or any disability. 
Contractor will require any Sub-contractor to be bound to the same requirements as 
stated within this section. Contractor, and on behalf of any subcontractors, warrants 
compliance with this section.  
 
7.  
No Boycott of Israel.  To the extent A.R.S § 35-393 through § 35-393.03 are 
applicable, the parties hereby certify that they are not currently engaged in, and agree 
for the duration of the Agreement to not engage in, a boycott of goods or services 
from Israel, as that term is defined in A.R.S § 35-393. 
 
8. 
Attestation of PCI Compliance.  When applicable, the Contractor will provide the 
City annually with a Payment Card Industry Data Security Standard (PCI DSS) 
attestation of compliance certificate signed by an officer of Contractor with oversight 
responsibility. 
 
9. 
Ratification of Agreement.  City and Contractor hereby agree that except as 
expressly provided herein, the provisions of the Agreement shall be, and remain in 
full force and effect and that if any provision of this Amendment conflicts with the 
Agreement, then the provisions of this Amendment shall prevail. 
 
[Signatures on the following page.]

EXHIBIT A 
PROFESSIONAL SERVICES AGREEMENT 
 
The City of Glendale owns and operates the Thunderbird Reservoir that is utilized 
to store water and maintain hydraulic grade for Pressure Zone 2 in the City’s 
potable water distribution system.  The Thunderbird Reservoir was installed in the 
mid 1980’s and several components at the facility are near the end of their useful 
life.  A structural inspection of the roof system was performed in October 2022 and 
identified improvements required to the roof system.   
The purpose of this project is to rehabilitate the existing facility by replacing and 
upgrading the reservoir roof and addressing structural concerns. This project will 
focus on the roof rehabilitation and will be constructed during the winter of 23/24.  
The City will initiate a separate project that will design and construct the 
mechanical and electrical improvements.  The following presents the detailed 
Scope of Services to prepare construction documents and obtain required permits 
to rehabilitate the Thunderbird Reservoir Roof.

EXHIBIT B 
SCOPE OF WORK 
 
See attached Scope of Work dated December 8, 2022 which includes design and 
Construction Management Activities.

City of Glendale, Arizona 
Thunderbird Reservoir Roof Rehabilitation 
Scope of Services 
 
December 8, 2022 
 
The City of Glendale owns and operates the Thunderbird Reservoir that is utilized to store 
water and maintain hydraulic grade for Pressure Zone 2 in the City’s potable water 
distribution system.  The Thunderbird Reservoir was installed in the mid 1980’s and 
several components at the facility are near the end of their useful life.  The purpose of this 
project is to rehabilitate the existing facility by replacing and upgrading several 
components of the facility.  The City has performed water quality evaluations of the 
existing facility and identified upgrades to improve water quality.  A structural inspection 
of the roof system was performed in October 2022 and identified improvements required 
to the roof system.   
 
The City has elected to separate the identified improvements into two separate projects.  
This project will focus on the roof rehabilitation and will be constructed during the winter 
of 23/24.  The City will initiate a second project that will design and construct the 
mechanical and electrical improvements.  The following presents the detailed Scope of 
Services to prepare construction documents and obtain required permits to rehabilitate the 
Thunderbird Reservoir Roof.   
 
Project Elements 
 
The following major facility components and services are assumed to be included in the 
design effort for this project: 
 
 Remove and replace the entire metal roof decking with a new standing seam metal 
roof 
 Install new ridge vent and perimeter eave vent  
 Install new walkways and access hatches on roof 
 Replace girder and purlin wall connections and expansion joints  
 Sandblast and recoat purlins and girders as identified in the October 2022 
inspection.  Alternative to sandblasting for surface preparation and purlin 
replacement will be evaluated to minimize the amount of sandblasting necessary. 
 Repair all structural decencies identified in the October 2022 inspection 
 Concept design for water quality improvements necessary to identify access hatch 
locations and sizing as well as chlorine solution feed piping.  The design of the 
access hatches and chlorine solution feed piping will be included in the roof design

for this project.  The detailed design of the water quality improvement equipment 
will be a future project. 
 Asset Management Requirements. Prepare facility information to incorporate into 
the City’s current WSD Asset Management program including:   drawings, asset 
lists, asset attributes, PM requirements, warranty information, assign asset 
numbering for entire facility per current City asset management standards.  The 
asset management spreadsheet is due at the 90% drawings (minus the equipment 
serial numbers).  All asset ID’s must show on the 90% plans.  The City will not 
grant substantial completion for any portion of the project until the asset 
management spreadsheet is 100% complete, correctly populated, and accepted by 
the City.  The contractor will be responsible for maintaining new assets until the 
asset management spreadsheet is accepted by the City. 
 
It is assumed that the following permits will be procured as part of this project:    
 Approval to Construct for the project from MCESD and AOC. 
 ADWR Jurisdictional Dam Construction Permit 
 Building Permit from the City 
 
The following items are excluded from this Scope of Services:  
 Design of underground pipeline rehabilitation or replacement. 
 Potholing services to locate buried utilities in the project area. 
 Title research and/or boundary survey services are not included.   
 Radio Path Study:  In the event a radio path study is required it will be specified 
to be conducted by the Contractor.    
 Off-site improvements to sewer, water, other infrastructure outside of the limits of 
the reservoir site. 
 Topographic surveying services.  It is assumed that information on the as-built 
drawings is suitable to create a site plan suitable for the design and permitting of 
this project.   
 Geotechnical investigation services.   
 Landscaping services for the interior or exterior portions of the site.   
 ADWR Permit fee 
 Any work not specifically identified as being part of this scope of work or 
allowances shall be clearly identified in advance and no such work shall be started 
without prior written authorization from the City’s Engineering Project Manager.

The Engineering services to be provided under this Project are as follows: 
 
 
TASK 1.0 PRELIMINARY DESIGN AND DEVELOPMENT 
 
Subtask 1.1 Kick-Off Meeting.  A kickoff meeting with representatives from Engineer, 
Contractor, and the City will be conducted at project initiation.  The following will be 
accomplished: 
 Introduce key team members and establish lines of communication 
 Review the project scope and schedule 
 Identify key issues affecting project development 
 Request background information 
 Discuss and identify preferred system operation, equipment, and suppliers for the 
civil, mechanical, electrical, instrumentation, and control equipment.   
 Wilson Engineers to prepare and distribute meeting minutes to the attendees. 
 
Subtask 1.2 Data Collection, Review, and Design Coordination. Collect and review 
background information for the site. Engineer shall coordinate, compile and review the 
available information regarding the existing site conditions including: 
 
 Coordinate with City regarding the property limits. 
 As-Built Drawings for site. 
 Past reservoir operating level and flow rate data.   
 Current City Reservoir Facility Design Standards. 
 
Subtask 1.3 Design Basis Report / 30% Design.  Prepare a detailed design report for 
submittal to the City and MCESD.  Based on the available data, site investigations, and the 
City’s current design standards, the Engineer will prepare a design report for the project 
that includes the facility layout, design criteria and standards for the reservoir roof 
rehabilitation, identification of any additional design issues and recommendations.  This 
task will also include coordinating with up to two TTHM mitigation equipment vendors to 
develop concept designs for locations of aerators, mixers, and mechanical ventilation fans.  
This information will be reviewed with the City and utilized as the basis to identify the 
locations and sizing of roof openings that will be designed in this project to facilitate the 
installation of water quality improvement in a future project.    
 
To support the design report, the Engineer shall prepare preliminary 30% plans.  The 
following plans are anticipated to be included with the design report:

1. Civil: Site plan.   
2. Reservoir Roof Structure: deck plan, purlin plan, girder plan, sections, and details 
 
The Engineer will submit one (1) electronic copy (in .pdf format) to the City and 
Contractor.  A review meeting will be conducted to discuss comments on the Design Basis 
Report.  The Engineer shall incorporate the City and Contractor’s comments into a Final 
Design Report.   
 
TASK 2.0 CONTRACT DOCUMENT PREPARATION 
 
Subtask 2.1 Preparation of 60% Plans.  The Engineer will incorporate the comments 
received on the Detailed Design Report / 30% submittal and prepare a 60% submittal for 
review by the City and Contractor.  A review meeting will be conducted to discuss 
comments on the 60% plan submittal and confirm the desired elements to be included in 
the Agency Review permit submittal.      
 
Subtask 2.2 Preparation of Agency Review Construction Documents (90%). The 
Engineer shall prepare preliminary (90%) construction documents for including plans and 
specifications.  The plans shall incorporate the comments received on the 60% submittal 
and the review meeting. 
 
The Engineer will submit one (1) electronic copy (in .pdf format) to the City and 
Contractor.  In addition, electronic copies (in .pdf format) will be provided to MCESD for 
Approval to Construct (see Subtask 3.1).  An Agency review design workshop will be 
conducted to discuss any comments received from the City, Contractor, and MCESD. 
 
Subtask 2.3 Preparation of 100% Plans and Specifications. The final 100% plans and 
specifications will be prepared incorporating the City and Maricopa County’s comments. 
The Engineer will submit one (1) electronic copy (in .pdf format) to the Final plans and 
specifications to the City and Contractor. 
 
TASK 3.0 PERMITTING SERVICES 
 
Subtask 3.1 Maricopa County Environmental Services Department. The Engineer shall 
prepare the Approval to Construct Application and coordinate with the City for signatures.  
The Engineer shall then submit one set of the agency review plans and specifications to the 
Maricopa County Environmental Services Department for review. One review meeting 
will be conducted to discuss any comments received from the County.  The Engineer shall 
respond to the County’s comments and incorporate the comments into the Final 
Construction Documents.

Subtask 3.2 City of Glendale Building Safety.  The Engineer shall complete the Building 
Permit application and related requirements and submit the Agency Review Plans and 
Specifications to the City Building Safety Department for approval. The Engineer shall 
coordinate with the Building Safety Department and provide additional information as 
requested. 
 
Subtask 3.3 ADWR Jurisdictional Dam Construction Permit.  The Engineer shall 
complete the ADWR Permit application and related requirements (Construction Quality 
Assurance Plan Report) and submit the Agency Review Plans and Specifications to the 
ADWR for approval. The Engineer shall coordinate with ADWR and provide additional 
information as requested. 
TASK 4.0 PROJECT COORDINATION – DESIGN PHASE 
 
The Engineer will perform project administration services as described in the following 
subtasks: 
 
Subtask 4.1 Project Coordination Meetings with the City and Contractor.  The Engineer 
will conduct meetings and/or workshops with City Staff to discuss specific technical 
aspects of the design; progress in the development of the design, drawings, and 
specifications; and related issues that may affect Project results.  The meetings or 
workshops will likely consist of the following: 
 
 A detailed Design Kick-off Workshop with City staff and the Contractor; 
 Review Workshops – The Engineer will conduct a total of three (3) design review 
workshops with City staff and the Contractor;  
 Progress or Miscellaneous Meetings for months with no other meetings scheduled, 
quantity – 2 virtual or in person.  
 
The Engineer will prepare and distribute meeting agenda and document meeting results for 
each meeting and workshop. A total of nine (9) progress meetings (including workshops) 
are planned 
 
TASK 5.0 CONTRACTOR PRICING PHASE ASSISTANCE 
 
Subtask 5.1 Response to Questions/Prepare Addenda.  The Engineer will respond to 
questions from Contractor during preparation of cost models and construction contract 
pricing, when required review application for “pre-approved equal”, and prepare necessary 
addenda to the contract documents.

Subtask 5.2 Review Contractors Pricing.  The Engineer will review the Contractors cost 
model for the project, compare against the contract documents and, provide the City 
comments. 
 
TASK 6.0 CONSTRUCTION PHASE SERVICES 
 
Subtask 6.1 Preconstruction Conference. Conduct a preconstruction conference with the 
Contractor, the City and other interested parties prior to issuance of the Notice to Proceed.  
 
Subtask 6.2 Construction Observations. The Engineer shall provide on-site construction 
observation services for all items of work required by the contract documents. The 
Engineer shall monitor construction for compliance with the project plans and 
specifications.  The on-site representative shall be available for a minimum of 50 percent 
of the contract construction period. The on-site representative shall visit the project site 
during the course of critical construction activities, but not less than two times per week, 
depending on the status of work per the Contractor’s construction schedule. 
 
Subtask 6.3 Construction Schedule Review. The Engineer shall review the construction 
schedule with particular emphasis on assuring that reasonable time allowances have been 
made for the work required. The Engineer shall observe construction progress and maintain 
and issue a monthly construction observation report. All updated schedules must be 
reviewed and approved prior to issuance of monthly progress payments to the Contractor. 
 
Subtask 6.4 Submittal Reviews. The Engineer shall review and approve all shop drawings. 
The Engineer will advise the Contractor before the commencement of any work requiring 
a shop drawing or sample submission if the submission has not been accepted by Engineer. 
The Engineer shall maintain a submittal log and coordinate all reviews and any necessary 
resubmittals.  
 
Subtask 6.5 Conduct Project Meetings. The Engineer shall conduct bi-weekly construction 
project meetings, prepare an agenda and minutes of the meeting, and distribute to all 
attendees.  
 
Subtask 6.6 Review Contractors Payment Applications. Review the Contractor's initial 
and updated schedule of estimated monthly payments and advise the City as to 
acceptability.  Review the Contractor's monthly payment requests, and forward to the City 
for final approval and processing.  The Engineer's review shall be for the purpose of making 
an independent opinion of work completed and mathematical check of the Contractor's 
payment request.  Engineer is responsible for verifying the quantities of work which are 
the basis of the payment requests. The final monthly pay requests will be approved and 
processed by the City.

Subtask 6.7 RFI’s and Change Order Requests. The Engineer will interpret construction 
contract documents and respond when requested by the City or Contractor for a 
clarification.  The Engineer shall review and make recommendations on all change order 
requests from the Contractor, including applications for extension of construction time.  
Evaluate the cost and scheduling aspects of all change orders.  No change order shall be 
implemented without the prior approval of the City.  
 
Subtask 6.8 Substantial and Final Completion.  Upon substantial completion, inspect the 
construction work and prepare a punch-list of those items to be completed or corrected 
before final completion of the project.  Submit results of the inspection to the City and the 
Contractor. The Engineer will maintain a running deficiency list and keep the Contractor 
informed as to its current status. The Engineer will conduct, with the assistance of the City, a 
final inspection and prepare a final punch list, including all items remaining on the deficiency 
list, as well as any additional items discovered during the final inspection.  
 
Subtask 6.9 As-Built Drawings. The Engineer shall prepare record as-built drawings of 
the completed work based upon markups from the Contractor’s record drawings and 
deliver the drawings to the City upon completion of the work.  The record drawings will 
be submitted in pdf and AutoCAD format. 
 
Subtask 6.10 MCESD AOC. The Engineer shall prepare the Engineers Certificate of 
Completion and application required for submittal to the Maricopa County Environmental 
Services Department (MCESD) to obtain the Approval of Construction (AOC) for the 
project. 
 
 
END SCOPE OF SERVICES

EXHIBIT C 
DESIGN SCHEDULE 
 
See attached Design Schedule

ID
Task Name
Duration
Start
Finish
1
START DESIGN
0 days
Jan 2 '23
Jan 2 '23
2
30%
5 wks
Jan 2 '23
Feb 3 '23
3
60%
6 wks
Feb 6 '23
Mar 17 '23
4
90%
4 wks
Mar 20 '23
Apr 14 '23
5
PERMITTING
3 wks
Apr 17 '23
May 5 '23
6
BIDDING
4 wks
May 8 '23
Jun 2 '23
7
CONTRACTING
4 wks
Jun 5 '23
Jun 30 '23
8
SUBMITTALS
4 wks
Jul 3 '23
Jul 28 '23
9
PROCUREMENT
4 wks
Jul 31 '23
Aug 25 '23
10
MOBILIZATION
2 wks
Aug 28 '23
Sep 8 '23
11
START CONSTRUCTIO 1 wk
Sep 11 '23
Sep 15 '23
12
ROOF DEMOLITION
2 wks
Sep 18 '23
Sep 29 '23
1/2
S
T
M
F
T
S
W
S
T
M
F
T
S
W
S
T
Dec 25, '22
Feb 5, '23
Mar 19, '23
Apr 30, '23
Jun 11, '23
Jul 23, '23
Sep 3, '23
Task
Split
Milestone
Summary
Project Summary
Inactive Task
Inactive Milestone
Inactive Summary
Manual Task
Duration-only
Manual Summary Rollup
Manual Summary
Start-only
Finish-only
External Tasks
External Milestone
Deadline
Progress
Manual Progress
Page 1
Project: Glendale T-Bird Res Re
Date: Jan 18 '23

EXHIBIT D 
COMPENSATION 
 
METHOD AND AMOUNT OF COMPENSATION 
Compensation shall be on an hourly rate basis plus allowable reimbursable 
expenses 
 
NOT-TO-EXCEED AMOUNT 
The total amount of compensation paid to the Consultant for full completion of all 
the work required by the project during the entire term of the project shall not 
exceed $457,685 
 
DETAILED PROJECT COMPENSATION 
See attached spreadsheet for details

City of Glendale
Thunderbird Reservoir
Roof Rehabilitation Project
FEE BREAKDOWN
December 8, 2022
Task
Roof Rehabilitation Task Description
Fee
Task 1.0 - Preliminary Design and Development
1.1
Kickoff Meeting
1,870
$                 
1.2
Data Collection, Review, and System Design Coordination
720
$                    
1.3.1
Draft Basis of Design Report 
25,440
$               
1.3.2
Preliminary 30% Engineering Design Plans
30,620
$               
Subtotal
58,650
$               
Task 2.0 - Contract Document Preparation
2.1
Preparation of 60% Plans
38,210
$               
2.2
Preparation of Agency Review Construction Documents (90%)
46,850
$               
2.3
Preparation of 100% Plans and Specifications
20,350
$               
Subtotal
105,410
$             
Task 3.0 - Permitting Services
3.1
MCESD Approval to Construct Permit
3,485
$                 
3.2
City of Glendale - Building Safety Review
4,145
$                 
3.3
ADWR - Jurisdictional Dam Construction Permit
8,315
$                 
Subtotal
15,945
$               
Task 4.0 - Project Coordination and Meetings (Design Phase)
4.1
Project Coordination Meetings
34,400
$               
Subtotal
34,400
$               
Task 5.0 - Contractor Pricing Phase Assistance
5.1
Contractors Questions/Addenda
5,530
$                 
5.2
Review Contractors Pricing
5,195
$                 
Subtotal
10,725
$               
Task 6.0 - Construction Phase Services
6.1
Preconstruction Conference
1,460
$                 
6.2
Construction Observations
78,960
$               
6.3
Schedule Review
4,680
$                 
6.4
Submittal Reviews
26,620
$               
6.5
Project Meetings
19,740
$               
6.6
Review Pay Applications
4,080
$                 
6.7
RFI's and Chang Order Requests
15,940
$               
6.8
Substantial and Final Completion
9,720
$                 
6.9
As-Built Drawings
11,195
$               
6.10
MCESD AOC
3,030
$                 
Subtotal
175,425
$             
SUBTOTAL - WILSON LABOR SUMMARY
389,830
$           
EXPENSE/ALLOWANCE SUMMARY
Task #
Expense Description
Unit
Total
1.0
Structural Engineer - Design
Allowance
31,000
$               
2.0
Structural Engineer - Construction
Allowance
10,000
$               
3.0
MCESD Review Fees
Allowance
2,500
$                 
4.0
Glendale - Plan Review Fee
Sheets/Reviews
14,355
$               
5.0
Misc. Engineering Allowance
Allowance
10,000
$               
SUBTOTAL - EXPENSE SUMMARY
67,855
$             
Item
Roof Rehabilitation Task Description
Amount
I.
ROOF REHABILITATION LABOR
389,830
$             
II.
EXPENSE/ALLOWANCE SUMMARY
67,855
$               
III.
SUBTOTAL DESIGN AND CONSTRUCTION SERVICES
457,685
$             
Item
TOTAL CONTRACT AMOUNT
Amount
A
PREVIOUS COMPENSATION FOR STUDY
34,250
$               
B
SUBTOTAL DESIGN AND CONSTRUCTION SERVICES
457,685
$             
C
TOTAL ROOF REHAB. DESIGN & CONSTRUCTION SERVICES
491,935
$