Agreement Amendment

City of Chandler — Regular Meeting (2021-03-25)

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Rev: 10/16/2020 
 
Page 1 
Amendment No.2 
Project No. WW1901.201 
 
 
AMENDMENT NO. 2 TO PROFESSIONAL SERVICES AGREEMENT 
Design Services 
Water Reclamation Facility Improvements 
 
Project No. WW1901.201 
Council Date: March 22, 2021    Item No.  
 
THIS AMENDMENT NO. 2 (“Amendment No. 2”) to the agreement for services dated 13th of 
September, 2019 (the “Agreement”) is made by and between the City of Chandler, an 
Arizona municipal corporation, (“City”) and Wilson Engineers, LLC, a limited liability 
company (“Consultant”), on this ______ day of ___________________, 202_____ (“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. 2 and the Agreement. 
 
AGREEMENT 
 
NOW, THEREFORE, in consideration of the premises and mutual promises contained in the 
Agreement and this Amendment No. 2, 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. 2 by this reference. 
 
SECTION III – PAYMENT OF COMPENSATION AND FEES 
 
The Agreement is amended to increase the total contract price in an amount not to exceed 
$222,570 for a total contract amount of $4,122,380 payable in accordance with Exhibit “B” 
attached to and made a part of this Amendment No. 2 by this reference.

Rev: 10/16/2020 
 
Page 2 
Amendment No.2 
Project No. WW1901.201 
 
SECTION IV – CONFLICT AMONG DOCUMENTS 
 
The Agreement and this Amendment No. 2 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. 2. If a conflict or ambiguity 
arises among the Agreement and Amendment No. 2, the instrument in the following order 
prevails and controls: (1) Amendment No. 2; and (2) Agreement.   
 
 
 
 
 
 
 
 
 
 
 
 
SIGNATURE PAGE TO FOLLOW

IN WITNESS WHEREOF, the Parties hereto have caused this Amendment No. 2 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. 2. 
"CITY" 
CITY OF CHANDLER 
Recommended By: 
Andrew Goh, P.E. 
CIP City Engineer 
MAYOR 
APPROVED AS TO FORM: 
City Attorney 
ATTEST: 
City Clerk 
"CONSULTANT" 
Wilson Engineers, LLC 
-
Signature 
Title 
Rev: 10/16/2020 
Amendment No.2 
Project No. WW1901.201 
Seal 
Page 3

Rev: 10/16/2020 
Page 4 
Amendment No.2 
Project No. WW1901.201 
Amendment No. 2 (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)
$ 3,899,810 
Net change resulting from this Amendment: 
$ 222,570 
Revised Contract amount, including this Amendment: 
$4,122,380 
Last Contract amount approved by Council: 
$ 3,899,810 
Amendment % of last Contract amount approved by Council: (if accumulated amount
over 10% of previous Contract amount approved by Council, Council approval is required) 
5.7% 
Contract time or completion date prior to this Amendment: (including
previous amendments)
660 
or 
Days 
Date 
Net change resulting from this Amendment: 
0 
or 
Days 
Date 
Revised Contract time or completion date: (including this amendment) 
660 
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. 2 does require Council approval: 
X 
Amendment is over 10% of  previous Contract amount approved by Council  
Amendment No. 2  Council approval:    
 Item No.: 
, if applicable 
OWNER NAME & DATE APPROVAL: 
E-copy: 
Project Mgr. 
Consultant 
Owner 
File
John Pinkston  2/13/2021

Rev: 10/16/2020 
 
Page 5 
Amendment No.2 
Project No. WW1901.201 
EXHIBIT A 
SCOPE OF WORK

Task 2.2 Odor Control Evaluation Tech Memo:  The ENGINEER shall conduct an evaluation of the 
existing odor control system.  This task will include an evaluation of existing system performance and 
identify potential upgrades to the existing system as well as identify options for replacement of existing 
system with facilities such as a new chemical scrubber, a biofilter or an addition of a second stage to the 
existing bio-trickling filter.  The task will include development of a preliminary layout for each system, 
identifying pros and cons associated with each alternative and will identify conceptual level costs for each 
of the alternatives.  A brief technical memorandum will be prepared to summarize the findings with 
recommendations.  Detailed design of any alternative identified as part of this evaluation is not included 
in this scope of work. 
 
Task 3.3 Drainage Reports: The ENGINEER shall identify the additional paving and grading 
improvements on both the AWRF and OWRF sites and update the existing drainage reports for review 
and approval by the CITY. The grading and drainage modifications will be identified in two separate 
reports (one for each site) and will be incorporated into detailed design documents.  The updated grading 
and drainage reports will be submitted to the City Civil Plan Review for final approval. 
 
TASK 3. DETAILED DESIGN 
 
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 using the City’s Standard 
Specifications Guide Documents, 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 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. 
 
Participate in a site walk-through with CMAR and the City operation and maintenance staff.  
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 ASSISTANCE 
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 Minor Amendment Application 
4.1 - City of Chandler Coordination: 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. 
4.2 - MCESD Coordination: 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). 
 
4.3 ADEQ APP Coordination:  The APP Modification submittals are currently being prepared for 
submittal and review by the ADEQ.  Additional improvement items which are included in this design will 
be added to the permit application and included as part of the permit and no separate Minor Amendment 
paperwork will be required for these improvements.  
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; 
 
Evaluate alternative systems suggested by CM at Risk; 
 
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 
Task 6.1 Topographical Site Survey: 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 at the AWRF and 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.  
Task 6.2: Odor Control System Services: The ENGINEER with the assistance from a sub-consultant 
will perform testing of the existing odor control system which may include incoming and outgoing H2S 
levels and installation of any Oda Loggers and inspection of the existing odor control system and 
preparation of a summary report. 
END OF SCOPE OF WORK

Rev: 10/16/2020 
 
Page 6 
Amendment No.2 
Project No. WW1901.201 
EXHIBIT B 
FEE SCHEDULE

22,220.00
$        
Project Meetings
6,150.00
$         
Odor Control Evaluation Workshop
16,070.00
$       
65,650.00
$        
Preliminary Design Report
14,530.00
$       
Odor Control Tech Memo
26,070.00
$       
Drainage Reports
25,050.00
$       
107,970.00
$      
60% Progress Submittal 
26,070.00
$       
90% Progress Submittal (Agency Review Set)
49,070.00
$       
Final (100%) Contract Documents
24,670.00
$       
MOPOs
8,160.00
$         
5,760.00
$          
City Permitting
1,840.00
$         
MCESD Permitting
2,420.00
$         
ADEQ APP Coordination
1,500.00
$         
10,970.00
$        
Coordination with CMAR
10,970.00
$       
10,000.00
$        
Topographical Site Survey
7,500.00
$         
Odor Control Systems Testing
2,500.00
$         
-
$                   
TOTAL COST:
222,570.00
$      
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 / 
Proj. Prof
Lead EI&C
CADD 
Technicians
Admin
Uday 
Gandhe
Sreeram 
Rengaraj, 
Scott L.
Mike Churchill, 
Jacob Mastov
Damien 
Tonnelle
Katie G.,
Sydney A., Megan S., 
 Jeff J.,
Abhinay S., Phani P.
John S.
Kam C., 
Cody K., 
Julius C.
Dawn A.,
Monica F.,
Shey A.
 $   215.00  $   195.00  $           195.00  $   170.00  $                      145.00  $   160.00  $         115.00  $     95.00 
4
16
4
28
76
0
8
8
144
Project Meetings
2
8
4
4
16
0
0
4
36
Odor Control Evaluation/Workshop
2
8
0
24
60
0
8
4
104
6
56
4
44
256
4
48
20
438
Preliminary Design Report
2
8
4
16
40
4
16
8
96
Odor Control Tech Memo
2
8
0
24
120
0
16
8
176
Drainage Reports
2
40
0
4
96
0
16
4
160
14
52
28
48
292
44
204
88
770
60% Progress Submittal
2
8
4
8
80
12
60
16
188
90% Progress Submittal (Agency Review Set)
6
32
16
24
108
24
96
40
340
Final (100%) Contract Documents
2
8
8
8
80
8
40
24
176
MOPOs
4
4
0
8
24
0
8
8
52
0
6
0
10
16
0
0
6
38
City Permitting
0
2
0
4
4
0
0
2
12
MCESD Permitting
0
2
0
4
8
0
0
2
16
ADEQ APP Coordination
0
2
0
2
4
0
0
2
10
2
8
0
16
40
0
4
0
70
Coordination with CMAR
2
8
0
16
40
0
4
0
68
0
0
0
0
0
0
0
0
0
Topographical Site Survey
Odor Control Systems Testing
26
138
36
146
680
48
264
122
1460
6. Other Direct Costs
5. Project Delivery Method Assistance
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
6. Design Phase Services Allowance