Amendment - Wilson Engineers, LLC

City of Chandler — Regular Meeting (2021-09-23)

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Rev: 3/4/2021 
Page 1 
Amendment No. 3 
Project No. WW1901.201 
AMENDMENT NO. 3 TO PROFESSIONAL SERVICES AGREEMENT 
Design Services 
Water Reclamation Facility Improvements 
Project No. WW1901.201 
Council Date: September 23, 2021    Item No. 
THIS AMENDMENT NO. 3 (“Amendment No. 3”) to the agreement for services dated 
September 26, 2019 (the “Agreement”) is made by and between the City of Chandler, an 
Arizona municipal corporation, (“City”) and Wilson Engineers, LLC (“Consultant”), on this 
______ day of ___________________, 2021 (“Effective Date”).  (City and Consultant may 
individually be referred to as “Party” and collectively referred to as “Parties”). 
RECITALS 
A.
The Parties entered into the Agreement for the following services: 
Design Services ("Services”) for Water Reclamation Facility Improvements project.
B.
The Parties have determined that it is necessary and desirable for the Consultant 
to perform additional services for the City under the terms and conditions set forth in 
this Amendment No. 3 and the Agreement.
AGREEMENT 
NOW, THEREFORE, in consideration of the premises and mutual promises contained in the 
Agreement and this Amendment No. 3, the Parties agree to amend and modify the 
Agreement as follows. 
SECTION I – CONSULTANT’S SERVICES 
The Agreement is amended to add the modified scope of work described in Exhibit “A” 
attached to and made a part of this Amendment No. 3 by this reference. 
SECTION II – PERIOD OF SERVICE 
The Agreement is amended to increase the contract time by 348 calendar days for a total 
1,008 calendar days.   
SECTION III – PAYMENT OF COMPENSATION AND FEES

Rev: 3/4/2021 
 
Page 2 
Amendment No. 3 
Project No. WW1901.201 
 
The Agreement is amended to increase the total contract price in an amount not to exceed 
$313,560 for a total contract amount of $4,435,940 payable in accordance with Exhibit “B” 
attached to and made a part of this Amendment No. 3 by this reference. 
 
SECTION IV – CONFLICT AMONG DOCUMENTS 
 
The Agreement and this Amendment No. 3 constitute the complete agreement between 
the Parties concerning the subject matter of the Agreement and replace any prior oral or 
written communications between the Parties.   The terms and conditions of the Agreement 
are incorporated into and made a part of this Amendment No. 3. If a conflict or ambiguity 
arises among the Agreement and Amendment No. 3, the instrument in the following order 
prevails and controls: (1) Amendment No. 3; and (2) Agreement.   
 
 
 
 
 
 
 
 
 
 
 
 
SIGNATURE PAGE TO FOLLOW

IN WITNESS WHEREOF, the Parties hereto have caused this Amendment No. 3 to be duly 
executed. 
Each Party warrants and represents that its respective signatories whose 
signatures appear below have been and are on the date of signature duly authorized to 
execute this Amendment No. 3. 
"CITY" 
CITY OF CHANDLER 
MAYOR 
Recommended By: 
Andrew Goh, P.E. 
CIP City Engineer 
APPROVED AS TO FORM: 
City Attorney 
ATTEST: 
City Clerk 
"CONSULTANT" 
	•oq•rs
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9'621-7-) 
Signature 
Date 
Stephen Todd 
Print Name 
Principal 
Title 
steve.todd@wilson-engineers.com 
Signer Email Address 
Rev: 3/4/2021 
Amendment No. 3 
Project No. WW1901.201 
Seal 
Page 3

Rev: 3/4/2021 
 
Page 4 
Amendment No. 3 
Project No. WW1901.201 
 
Amendment No. 3 (cont.) 
Project No. WW1901.201 
 
These changes result in the following adjustments of contract amount and time: 
Original Contract amount:  
$ 2,724,250 
Current Contract amount, prior to this Amendment: (including previous Amendments)  
$ 4,122,380 
Net change resulting from this Amendment:  
$ 313,560 
Revised Contract amount, including this Amendment: 
$4,435,940 
Last Contract amount approved by Council: 
$ 4,122,380 
Amendment % of last Contract amount approved by Council: (if accumulated amount 
over 10% of previous Contract amount approved by Council, Council approval is required) 
8% 
Contract time or completion date prior to this Amendment: (including 
previous amendments) 
660 
or 
      
 
Days 
 
Date 
Net change resulting from this Amendment: 
348 
or 
      
 
Days 
 
Date 
Revised Contract time or completion date: (including this amendment) 
1,008 
or 
      
 
Days 
 
Date 
 
THIS AMENDMENT No.       does NOT require Council approval: 
      
Amendment is less than 10% of Contract amount last approved by Council  
 
 
THIS AMENDMENT No. 3 does require Council approval: 
X 
Amendment is over 10% of  previous Contract amount approved by Council   
 
 
Amendment No. 3  Council approval:       Item No.:      , if applicable 
OWNER NAME & DATE APPROVAL:  John Pinkston 8/4/2021   
 
 
 
 
E-copy: 
Project Mgr. 
Consultant 
Owner 
File

Rev: 3/4/2021 
 
Page 5 
Amendment No. 3 
Project No. WW1901.201 
EXHIBIT A 
SCOPE OF WORK

EXHIBIT A – SCOPE OF SERVICES 
CITY PROJECT NUMBER: WW 1901-201 
 
July 28, 2021 
 
TASK 1. PROJECT MANAGEMENT 
The ENGINEER will perform various project management and monitoring activities throughout the 
project, as delineated in the following tasks and sub-tasks.  The ENGINEER shall prepare and submit 
regular monthly invoices and shall include a summary of the work completed for each billing cycle.   
Prepare and distribute agenda and minutes for each meeting. Agenda will be submitted to the CITY at 
least two (2) days prior to the meeting. Minutes will be submitted to the CITY no more than five (5) days 
following each meeting. 
 
Project Kickoff Meeting: Conduct project kickoff meeting with CITY representatives to review the 
scope of work and draft concept of the Odor Control System.  
 
Project Meetings:  Conduct additional periodic project meetings with CITY representatives throughout 
the Project to keep the CITY informed of the project progress and obtain input and direction as required. 
The meeting objectives will include the presentation of the design details for CITY review and approval; 
results from data collection, and other outstanding project issues. The anticipated number of periodic 
meetings during this phase shall be four.  
 
Project Workshop: Conduct one workshop with CITY and other project stakeholders as necessary to 
discuss the design of the Ocotillo WRF IPS Odor Control System. This workshop will summarize the 
results of the odor control evaluation and will also facilitate discussion for the replacement of the existing 
facilities and installation of new ancillary facilities. 
TASK 2. PRELIMINARY DESIGN  
Preliminary Design Report:  The ENGINEER will provide brief summary description for the proposed 
Odor Control System. The ENGINEER shall advance the design concepts and provide preliminary design 
criteria, document the preliminary alternatives, schematics, layouts, and criteria developed and evaluated 
into the DRAFT Preliminary Design Report (PDR).  The DRAFT PDR will be completed along with the 
60% Design Documents. The PDR will be finalized prior to the Agency Review Set (90% Submittal) for 
the purposes of submittal to the Maricopa County.

TASK 3. DETAILED DESIGN DEVELOPMENT 
 
The ENGINEER will prepare detailed construction documents for the entire Project along with the 
additional elements that have been added to the project.   
Preparation of construction drawings and technical specifications will be as follows: 
1. Drafting and CADD Standards:  The organization and preparation of construction drawings shall be in 
accordance with the City drafting guidelines. 
2. Technical Specifications:  Technical specifications shall be prepared for Divisions 1 through 17. 
The Engineer will prepare detailed design documents for additional design scope items identified as a 
separate set of GMP documents as a standalone design document. The level of detail on the drawings in 
each progress submittal should be as given below.  
Sixty Percent (60%) Progress Submittal 
The project drawings and specifications for each discipline are coordinated and directly moved to a 60% 
level of design and will progress to the level where the design intent is established and must show the 
work in sufficient detail that a contractor can recognize elements and requirements for construction.  The 
60% documents will also include the Draft PDR discussed under Task 2. 
The ENGINEER shall finalize the process control narratives for the additional elements at the WRFs 
along with all other design items, prior to completion of the 60% detailed design documents and after a 
detailed review of the narratives with the City staff. 
The set of drawings shall include a cover sheet and an index sheet, Civil, Architectural, Structural, 
Mechanical, Electrical and Instrumentation Drawings.  Draft Specifications for major equipment shall be 
included in the submittal. 
Ninety Percent (90%) Progress Submittal (Agency Review Set)  
Drawings and details in all disciplines should be complete for all the additional design elements along 
with the other design items.  Specifications should be essentially complete.  Design calculations in all 
disciplines shall be essentially complete and checked.  Comments on design, drawings and specifications

from previous reviews must have appropriate responses before the 90% progress submittal is submitted.  
Comments from the 60 percent review by City staff, any constructability reviews, and review comments 
from regulatory agencies must have appropriate responses or actions. 
Final (100%) Contract Documents 
Drawings and specifications should be complete and accepted by the City.  All construction documents 
should be complete and ready for construction pricing of the work. 
Maintenance of Plant Operations (MOPO) 
The ENGINEER shall identify additional preliminary MOPO list that will identify areas of construction 
of additional facilities that interfaces with the existing facilities.  The additional preliminary MOPO list 
shall be added to the other MOPO list along with the 60% Submittal and included in the preliminary 
design report.  The preliminary MOPO list shall be used as the basis for development of the MOPO 
activities during the detailed design phase. 
MOPO development shall occur during preparation of drawings and specifications and the ENGINEER’s 
will include the following: 
 
Assist CMAR in developing additional draft MOPOs to be added to the current design elements 
list with input from City operation and maintenance staff. 
 
Incorporate additional MOPO requirements into the drawings and specifications. 
 
Assist the CMAR in determining the MOPO durations, constraints, and shared responsibilities for 
MOPOs. 
 
Review MOPOs prepared by the CMAR, incorporate the MOPOs in the specifications. 
The MOPO list for City review will be included in the 60% and 90% Submittals.  The final MOPOs 
developed by the CMAR must have City approval and will be included in the construction documents 
with the final submittal. 
TASK 4- PERMITTING  
The ENGINEER will perform permitting coordination activities throughout the Design Phase, as 
delineated in the following tasks and sub-tasks. Specific permits, plans and reviews anticipated under this 
Project include:

 
City of Chandler- Building Permit (and Building Plan Review) 
 
City of Chandler- Civil Plan Review 
 
MCESD- Approval to Construct 
 
ADEQ Other Amendment Application 
City Permitting: The ENGINEER shall develop applicable permit applications and submit preliminary 
supporting documents as part of the CITY's Pre-Tech Review process (at the 60 percent design stage).  
Submit applicable Interim Submittal Review and Agency Review documents and associated reports, plans 
and supporting information to the CITY's Development Services and Fire Departments for Building, Site, 
Civil and Fire plan review approvals accordingly. Provide additional information as requested from CITY 
plan review staff, as appropriate. 
NOTE: It is assumed that all CITY permit fees for the Project will be paid directly by the CITY, and 
therefore, are not included within this scope of services. 
MCESD Permitting: Develop the Agency Review document set(s) and associated permit application in 
accordance with the Permitting Assistance Plan and submit to MCESD for non-expedited review to 
obtain the Approval to Construct (ATC). It is assumed that one (1) review meeting will be conducted with 
MCESD to discuss any comments received from the County accordingly. 
NOTE: The subsequent Approval of Construction (AOC) submission is not included within this scope of 
services, but will be included under a subsequent Construction Phase Services contract (if desired by the 
CITY). 
 
ADEQ APP Coordination:  The APP Modification submittals for the Odor Control System will be 
prepared and submitted separately under an Other Amendment Application, if required by ADEQ.  
TASK 5. CMAR COORDINATION 
The ENGINEER will work with the CMAR contractor to coordinate the detailed design elements of the 
project and obtain input. The Engineer’s effort to coordinate additional design elements with the CM at 
Risk will consist of: 
 
Solicit CM at Risk input during design development as appropriate; 
 
Provide information for cost estimating; 
 
Respond to constructability review comments;

 
Assist and review during GMP development; 
In addition to coordination with the CMAR, City may request the ENGINEER to attend meetings with the 
third party cost consultant and provide them with the project submittals to facilitate their review of 
CMAR’s GMP.   
TASK 6. OTHER DIRECT COSTS 
Structural Engineering Services: The ENGINEER with assistance from a sub-consultant will perform 
structural engineering services including structural drawings/specifications and design criteria necessary 
to support the preliminary design report, and the detailed design services for the OWRF IPS OCS. 
Surveying Services: The ENGINEER with assistance from a sub-consultant will perform a site 
topographical survey to document the current conditions and surface features of the area where new 
grading and paving is proposed around the IPS OCS at OWRF.  Site survey will be based on City of 
Chandler datum and will include existing spot elevations for use in developing new contours; location and 
establishment of perimeter property lines based on existing legal descriptions, available survey reviews, 
and existing and future right-of-ways; and identification of above-ground structures, and other identified 
facilities.  
Geotechnical Services: The ENGINEER with the assistance from a sub-consultant will perform one soils 
boring in the proposed location of the OCS and submit a report summarizing the sub-surface conditions. 
END OF SCOPE OF WORK

Rev: 3/4/2021 
 
Page 6 
Amendment No. 3 
Project No. WW1901.201 
EXHIBIT B 
FEE SCHEDULE

12,020.00
$        
Project Kickoff Meeting
1,740.00
$         
Project Meetings
6,730.00
$         
Project Workshops
3,550.00
$         
25,430.00
$        
Preliminary Design Report
25,430.00
$       
170,090.00
$      
60% Progress Submittal
65,400.00
$       
90% Progress Submittal
59,620.00
$       
Final (100%) Contract Documents
34,500.00
$       
MOPOs
10,570.00
$       
27,220.00
$        
Preliminary Permitting Meetings
27,220.00
$       
10,800.00
$        
Coordination with CMAR
10,800.00
$       
18,000.00
$        
Structural Engineering Services
10,000.00
$       
Surveying Services
1,500.00
$         
Geotechnical Investigation
1,500.00
$         
Other Engineering Allowance
5,000.00
$         
50,000.00
$        
TOTAL COST:
313,560.00
$      
EXHIBIT "B-1"
TASK DESCRIPTION
2. Preliminary Design Development
Lump Sum Cost Per Task
3. Detailed Design Development
4. Permitting 
5. Project Delivery Method Assistance
7. Design Phase Services Allowance
 SUBTOTAL 
1. Project Management
6. Other Direct Costs

Principal
Sr. PM
Sr. PM 
(E/I&C)
Sr. Engr.
Project Engineer / 
Prof
Lead EI&C
CADD 
Technicians
Senior 
Admin
Uday 
Gandhe
Sreeram 
Rengaraj
Mike C.,
Joe S.
Damien 
T.
Harsh A., Sydney A.,
Jason G., Jeff J.,
Abhinay S., Phani P.
John S.
Kam C.,
Jeremy J., 
Julius C.
Tammy C.,
Monica F.,
Paulina D.
 $   215.00  $   195.00  $  195.00  $  170.00  $                      145.00  $   160.00  $        115.00  $         95.00 
6
10
0
6
24
0
24
16
86
Project Kickoff Meeting
2
2
0
2
4
0
0
0
8
Project Meetings
2
4
0
2
12
0
20
12
50
Project Workshops
2
4
0
2
8
0
4
4
22
2
8
4
16
60
20
60
12
182
Preliminary Design Report
2
8
4
16
60
20
60
12
180
22
92
44
96
400
140
320
56
1170
60% Progress Submittal
8
32
16
32
160
60
120
24
444
90% Progress Submittal
8
36
16
32
120
60
120
16
400
Final (100%) Contract Documents
4
16
8
24
80
16
80
16
240
MOPOs
2
8
4
8
40
4
0
0
64
12
32
0
32
72
0
12
12
172
City Permitting
2
4
0
8
16
0
4
4
36
MCESD Permitting
8
24
0
16
40
0
4
4
88
ADEQ APP Coordination
2
4
0
8
16
0
4
4
36
4
12
0
12
32
0
8
0
68
Coordination with CMAR
4
12
0
12
32
0
8
0
64
0
0
0
0
0
0
0
0
0
Structural Engineering Services
Surveying Services
Geotechnical Services
46
154
48
162
588
160
424
96
1678
6. Other Direct Costs
5. CMAR Coordination
TOTAL HOURS:
TASK DESCRIPTION
EXHIBIT "B-2"
1. Project Management
2. Preliminary Design Report
TOTAL HOURS       
PER TASK
< PROJECT ROLE
< NAME OF PERSON
 < HOURLY RATES 
Hours and Rates
3. Detailed Design Development
4. Permitting
7. Design Phase Services Allowance