Agreement to share costs

City of Glendale — Regular Meeting (2024-09-24)

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AGREEMENT TO SHARE COSTS  
FOR THE FEASIBILITY STUDIES AND TESTING OF  
THE 91ST AVENUE ADVANCED WATER PURIFICATION FACILITY  
 
1. 
PARTIES: 
 
This Agreement to Share Costs for the Feasibility Studies and Testing of the 91st Avenue 
Advanced Water Purification Facility (“Agreement”), is by and among those entities listed in 
Exhibit A which execute this Agreement and the City of Phoenix (“Phoenix”). Phoenix and the 
other parties are referred to collectively as “Parties” and individually as “Party”. 
 
2. 
RECITALS: 
 
This Agreement is made regarding the following: 
 
2.1. 
The Parties to this Agreement are water providers serving clean, safe, and reliable water 
supplies to their customers within municipal areas of the State of Arizona. 
 
2.2. 
Serving populations that reside in the Sonoran Desert, the Parties have long recognized 
the importance of resilient water supplies, and the Parties have supported and 
financially contributed to the development of water supplies, planning years and 
decades before the need for such supplies, resulting in a lengthy history of reliable water 
supplies and economic growth. 
 
2.3. 
The Parties have supported and complied with Arizona’s innovative groundwater 
management laws, with their emphasis on water conservation, which support has led 
to the reduction of the Parties’ gallons per capita per day water consumption rate and 
to the Parties’ ability to serve significantly greater populations today with less water 
than was used thirty years ago. The Parties have also supported the State’s Assured 
Water Supply program as sound policy, as a protection to their residents, and as an 
important economic development tool. 
 
2.4. 
Despite the Parties’ efforts, stresses on the Parties’ available water supplies continue, 
most notably Colorado River water available through the Central Arizona Project. 
 
2.5. 
The Parties recognize that one of the most significant and reliable water supplies readily 
available in the State is uncommitted wastewater and that current advanced water 
purification technology, as well as the regulatory environment, has now advanced so as 
to allow that water to be treated for safe direct use.

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2.6. 
The 91st Avenue Wastewater Treatment Plant (“91st Ave. WWTP”) is the largest 
wastewater treatment plant in the State. It is owned by the Cities of Glendale, Mesa, 
Phoenix, Scottsdale, and Tempe (“91st Ave. Cities”). The 91st Ave. WWTP currently 
produces significant supplies of uncommitted wastewater, which may legally be used by 
the 91st Ave. Cities in accordance with Arizona Pub. Serv. Co. v. Long, 160 Ariz. 429, 773 
P.2d 988 (1989). Thus, the 91st Ave. WWTP is a likely location for an advanced water 
purification facility (“AWPF”). 
 
2.7. 
The Parties recognize that Parties other than the 91st Ave. Cities may be benefitted by 
an AWPF through exchange, contractual arrangements, and other water management 
tools. 
 
2.8. 
The Parties have previously entered a non-binding Memorandum of Understanding to 
Investigate a Regional Advanced Water Purification Study, dated November 27, 2023, 
and now wish to terminate that Memorandum and enter into a binding agreement that 
will advance the design, construction, and governance of an operating multi-party AWPF 
that produces water that meets all applicable regulatory requirements and that may 
safely be introduced directly into potable water systems (“Project”). 
 
3. 
AGREEMENT: 
 
NOW, THEREFORE, in consideration of the mutual covenants herein set forth and for good and 
valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties 
agree as follows: 
 
4. 
INCORPORATION OF RECITALS: 
 
The recitals listed above are hereby incorporated into and expressly made part of this 
Agreement. 
 
5. 
RESERVATION OF EXISTING RIGHTS: 
5.1  
Each Party recognizes that entering into this Agreement does not ensure to it any right to 
water or a water supply in the future. Each Party recognizes the risks of this Project and the 
possibility that studies and/or testing or other circumstances may establish that an AWPF is 
not feasible. Each Party bears its own risk and agrees that no monies will be refunded if the 
Project does not move forward, except for any monies contributed that have not been 
expended or otherwise obligated for payment.  
5.2 
To the extent that an AWPF is determined to be feasible and is constructed, the Parties shall

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enter into negotiations and work in good faith to establish an agreement that governs the 
use of the AWPF. Any such agreement must provide for the use of outflows from the AWPF 
by the Parties in a ratio that is substantially similar to the Potential Flow Ownership 
percentages set forth in Exhibit B, as Exhibit B may be amended from time-to-time as 
provided by this Agreement. 
5.3 
Nothing in this Agreement alters or is intended to alter any Party's existing contractual rights, 
duties or obligations or any Party's existing rights to water, including and expressly under, 
but not limited to, Arizona Pub. Serv. Co .v Long, 160 Ariz. 429, 73 P.2d 988 (1989). 
6. 
SCOPE: 
6.1 
This Agreement sets terms and conditions for (1) the process for formation of and 
participation in the Steering Committee with the goal of advancing the Project; (2) 
determining estimated costs the Parties expect to pay in support of advancing the 
Project; (3) how the costs will be shared among the Parties; (3) the process to remit 
payment; (4) process for identifying and applying for any federal or state funds that may 
be available to be applied toward the Project; and (5) the process for voluntary 
departure, removal, and addition of parties to this Agreement. 
6.2 
A Projected Scope of Work to be undertaken under this Agreement is set forth in Exhibit 
E. Exhibit E is subject to changes as necessary to achieve the goal of advancing the 
Project. 
 
7. 
EFFECTIVE DATE AND TERM OF AGREEMENT: 
 
7.1. 
This Agreement is effective and binding upon its execution by Phoenix and at least one 
other Party (“Effective Date”). For any Party other than Phoenix and the first Party other 
than Phoenix to execute it, this Agreement is effective and binding upon execution by 
that Party. This Agreement remains effective until terminated as provided in 
Subparagraph 7.2. 
 
7.2. 
This Agreement terminates upon the earliest of the following occurrences: (i) Phoenix 
determines that it will not pursue the AWPF further and provides 30-days’ notice of that 
determination to the other Parties; (ii) all parties other than Phoenix have withdrawn or 
been removed from this Agreement in conformance with Paragraph 13; (iii) the Steering 
Committee unanimously votes to terminate this Agreement; or (iv) a governance or 
subsequent agreement for the AWPF is executed which, in its terms, terminates this 
Agreement. 
  
8. 
PROJECT OPERATING AND FINANCIAL MANAGER: 
 
Phoenix holds the majority share of Potential Flow Ownership, as set out in Exhibit B, and

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therefore, under the terms of this Agreement, will pay a majority of the costs for the Project. 
For this reason, Phoenix will serve as the operating and financial manager of the Project as set 
out in this Agreement. Among other duties and responsibilities set forth in this Agreement, 
Phoenix will collect, hold, and account for the contributions submitted by the other Parties, and 
will pay all expenses for the Project out of those funds and the funds contributed by Phoenix in 
accordance with this Agreement. 
 
9. 
ADMINISTRATIVE REPRESENTATIVES: 
Within thirty calendar days after a Party’s execution of this Agreement, that Party shall 
designate in writing to Phoenix by electronic mail, an Administrative Representative and an 
Administrative Alternate to administer this Agreement on behalf of the designating Party. 
Written notice of a change of an Administrative Representative or Administrative Alternate 
must be provided to Phoenix within thirty calendar days of such change. The Administrative 
Alternate may act only in the absence of the Administrative Representative. Neither the 
Administrative Representatives nor the Administrative Alternates have authority to amend, 
modify, or supplement this Agreement. Decisions of the Administrative Representatives 
pursuant to this Agreement must be in writing and signed by them. Phoenix will maintain a 
record of the Parties’ Administrative Representatives and Administrative Alternates and 
regularly notify the other Parties of those Representatives, Administrative Alternates, and any 
changes to those Representatives or Administrative Alternates. 
 
10. 
STEERING COMMITTEE: 
 
10.1. Within thirty calendar days after a Party’s execution of this Agreement, that Party shall 
designate in writing to Phoenix, by electronic mail, a representative to serve on the 
Steering Committee (“Steering Committee Representative”) and an alternate to serve 
on the Steering Committee (“Steering Committee Alternate”). Written notice of a 
change of a Steering Committee Representative or Steering Committee Alternate must 
be provided to Phoenix within thirty calendar days of such change. The Steering 
Committee Alternate may act only in the absence of the Steering Committee 
Representative. Unless otherwise authorized by the Steering Committee, each Party 
shall ensure that only its Steering Committee Representative or Steering Committee 
Alternate participates in meetings of the Steering Committee. Steering Committee 
Representatives and Steering Committee Alternates are expected to be individuals with 
senior positions within the organizational structure of each Party, such as director-level 
positions, and may be the same or different from the Administrative Representatives 
and Administrative Alternates identified in Paragraph 9. Phoenix will maintain a record 
of the Parties’ Steering Committee Representatives and Alternates and regularly notify 
the other Parties of those Steering Committee Representatives, Alternates, and any 
changes to those Representatives or Alternates.

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10.2. Phoenix shall convene the Steering Committee within thirty calendar days after the 
execution of this Agreement by at least five Parties or within 120 days after the Effective 
Date, whichever occurs earlier, and develop roles, responsibilities, meeting schedules, 
and other guidelines to govern the Steering Committee within sixty calendar days of 
that initial meeting of the Steering Committee. 
 
10.3. Phoenix will develop a plan of work to advance the Project and will submit the plan to 
the Steering Committee for comments and input. Phoenix will work in good faith to 
incorporate Steering Committee comments and input to the extent that the comments 
and input of the Steering Committee do not, in Phoenix’s sole determination, impede 
progress on the Project. The Work Plan may include hiring consultants, engineers, 
attorneys, and other professionals necessary to undertake feasibility studies, develop 
governance documents, develop a demonstration facility, and any other step necessary 
to advance the Project. The Steering Committee will regularly provide input on the 
Project, review the scope and direction of the Project against the Project’s aims and 
objectives, and monitor Project progress and efficiency. 
 
10.4. Phoenix shall chair the Steering Committee and provide staff for the Steering Committee 
as determined necessary by Phoenix. Phoenix shall procure consultants, engineers, 
attorneys, and other professionals as it determines necessary with Steering Committee 
input. In case of a disagreement among the Parties as to the selection of a consultant, 
engineer, attorney, and other professional, Phoenix will resolve the disagreement by 
selecting the consultant, engineer, attorney, and other professional most suitable for 
the contracted task, in Phoenix’s determination. All procurement shall be conducted in 
accordance with state law, the Phoenix City Code, and City of Phoenix policies and 
administrative regulations. 
  
10.5. Except as provided by Subparagraphs 10.4 and 13.4, all Steering Committee decisions will be 
made by majority vote of the members. An abstention will not be counted as an 
affirmative or a negative vote. In the event of an even split during a Steering Committee 
vote, Phoenix shall act as the tie-breaking vote. The votes of all members will be of equal 
weight, except that any two members of the Steering Committee, including Phoenix, 
may call for weighted voting prior to any vote. In such case of a call for weighted voting, 
the voting shall be in accordance with the Potential Flow Ownership percentages as set 
forth on Exhibit B, and a vote total greater than 50% of the Potential Flow Ownership 
percentages is required to adopt any motion.  
 
10.6. The Steering Committee shall revise and update the Exhibits to this Agreement as 
specified in this Agreement. The revised Exhibits are effective and become a part of this

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Agreement when approved by the Steering Committee without the Parties executing an 
amendment to the Agreement. In the event of a conflict between this Agreement and 
any Exhibit, the Agreement shall control. With the exception of revising Exhibits in 
accordance with this Subparagraph 10.6, the Steering Committee may not amend this 
Agreement. 
 
11. 
ESTIMATED COSTS: 
 
11.1. The Parties agree to contribute funding towards the estimated cost for the Project as set 
forth in this Agreement (“Initial Estimated Cost”). The Initial Estimated Cost for the 
Project for the remainder of Fiscal Year 2023-24 through Fiscal Year 2024-25 will not 
exceed $3,000,000.00 (three million dollars). For the purposes of this Agreement, a 
“Fiscal Year” means each twelve-month period commencing on July 1 and ending on 
June 30. 
 
11.2. Beginning in 2024 and in each year after, Phoenix will determine the estimated cost for 
the Project for the next Fiscal Year no later than October 15 and will inform the other 
Parties of that amount and provide supporting information by October 15. The 
estimated cost for the Project for the following Fiscal Year shall be discussed by Steering 
Committee during its October meeting. After discussion, the Steering Committee will 
adopt or reject the estimated cost. Once approved, the estimated cost for the following 
Fiscal Year (“Annual Estimated Cost”) is binding upon the Parties unless otherwise 
approved by the Steering Committee.  
 
11.3. The Parties shall share the cost of the Project in proportion to the Potential Flow 
Ownership ratios set out in Exhibit B. Each Party’s initial contribution is set out in Exhibit 
C and is determined by multiplying the Initial Estimated Cost by that Party’s Potential 
Flow Ownership percentage (“Initial Contribution Level”). Subsequent contributions will 
be determined by multiplying the Annual Estimated Cost by each Party’s Potential Flow 
Ownership percentage (“Annual Contribution Level”). Each Party shall submit its Initial 
Contribution Level and its Annual Contribution Levels as described in Paragraph 14.  
 
11.4. As necessary, Phoenix shall present updates to the Steering Committee regarding: (1) 
information relevant to the Initial Estimated Cost and Annual Estimated Cost, (2) 
availability of federal or state funding, and (3) anticipated Annual Estimated Cost for 
subsequent Fiscal Years. These updates will be provided based on information and 
analysis developed by Phoenix. Phoenix will notify the Steering Committee of any 
identified change in total Project cost at the next scheduled Steering Committee. 
 
11.5. Phoenix shall provide the Steering Committee with written reports of expenditures of

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all contributed costs at least annually. 
 
12. 
REVISION OF EXHIBITS: 
 
12.1. If an entity listed on Exhibit A fails to execute this Agreement within 120 days of 
Phoenix’s execution of the Agreement, it will be assumed that the entity is no longer 
interested in participating in the Project. Phoenix will convene a meeting of the Steering 
Committee, and the Steering Committee will revise Exhibit A by removing the entity that 
did not execute the Agreement and Exhibit B by reassigning that entity’s Potential Flow 
Ownership percentage to other Parties to this Agreement.  
 
12.2. If Exhibit B is revised by the Steering Committee, the Steering Committee shall revise 
the Parties’ Initial Contribution Level on Exhibit C by multiplying the Initial Cost Estimate 
by each Party’s revised Potential Flow Ownership percentage. 
 
12.3. If a Party voluntarily withdraws from this Agreement in accordance with Subparagraph 
13.1 or is removed from this Agreement in accordance with Subparagraph 13.2, Phoenix 
will convene a meeting of the Steering Committee, and the Steering Committee will 
revise Exhibit B by reassigning the removed or withdrawn Party’s Potential Flow 
Ownership percentage to other Parties to this Agreement.  
 
13. 
VOLUNTARY WITHDRAWAL; REMOVAL; AND ADDITION OF PARTIES: 
 
13.1. A Party that no longer wishes to be a Party to this Agreement may withdraw by giving 
Phoenix thirty calendar days’ notice under Paragraph 17 (“Voluntary Departure”). 
Phoenix will notify the other Parties of the withdrawal within five days of receipt of the 
withdrawal. 
 
13.2. The Steering Committee may remove a Party from the Agreement if the Steering 
Committee determines that the Party is not acting in good faith or otherwise 
unnecessarily interfering with advancing the Project. 
 
13.3. Any Party that leaves this Agreement through Voluntary Departure under Subparagraph 
13.1 or that is removed from the Agreement under Subparagraph 13.2 shall be 
responsible for all financial obligations under this Agreement through the remainder of 
the Fiscal Year in which the Voluntary Departure or removal occurs but will have no 
further financial obligations beyond that Fiscal Year under this Agreement.  
 
13.4. The Steering Committee may add a Party to the Agreement upon request from an entity 
to support the Project. Prior to the Steering Committee meeting during which adding a

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Party to the Agreement will be considered, Phoenix, in consultation with the interested 
entity and the Steering Committee, shall determine the Potential Flow Ownership for 
the entity, the extent to which the addition of the party would diminish the Potential 
Flow Ownership of the existing Parties, and the total estimated cost contributions the 
entity would have been required to submit if the entity had been a party to the 
Agreement from the date Phoenix executed this Agreement (“New Party Contribution”). 
Notwithstanding Paragraph 10 of this Agreement, if the addition of the party will 
diminish the Potential Flow Ownership of the existing Parties, the addition of the party 
must be approved by an equal-weighted vote of at least 67% of the Steering Committee 
members. If the Steering Committee approves adding a Party, the entity added shall 
submit its New Party Contribution in accordance with Paragraph 14 within 30 days of the 
entity’s execution of this Agreement. The new entity is not a Party to this Agreement 
until the payment is received by Phoenix. Upon adding a Party to this Agreement under 
this Subparagraph 13.4, the Steering Committee shall update Exhibits A, B, and D 
accordingly.  
 
13.5. Phoenix shall use the New Party Contribution for future expenses of the Project. 
Subsequent contributions by the other Parties, including Phoenix, shall be reduced in 
proportion of the Potential Flow Ownership ratio set out in Exhibit B as that Exhibit 
provided immediately prior to adding the new Party. 
 
14. 
PAYMENT: 
 
14.1. Phoenix shall invoice each Party at its Initial Contribution Level as identified in Exhibit C 
within 60 days of that Party’s execution of this Agreement. Each Party shall pay Phoenix 
at least 50% of that Party’s Initial Contribution Level within 90 days of its receipt of the 
invoice. For any Party that does not pay the full Initial Contribution Level within 90 days 
of receipt of the invoice, Phoenix will include any remaining balance for that Party on the 
invoice for that Party’s Annual Estimated Cost for Fiscal Year 2025-26 as described in 
Subparagraph 14.2. Any Party with an outstanding balance for its Initial Contribution 
Level shall pay that outstanding balance, along with its Annual Contribution Level for 
Fiscal Year 2025-26, by July 31, 2025.  
 
14.2. By April 1 of each year, Phoenix shall invoice each Party at its Annual Contribution Level 
based on the Annual Estimated Cost established by the Steering Committee during the 
previous October as set forth in Subparagraph 11.2. Each Party shall pay its Annual 
Contribution Level by July 31 of the year in which it receives the invoice.  
 
14.3. Any invoices not paid when due are delinquent and will bear interest at the Wall Street 
Journal Prime Rate, on the date the invoice was due plus 5% (Wall Street Journal Prime

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Rate plus 5%) per annum from the date when the bill was due until the bill is paid in full 
(including any accrued interest). In the event the Wall Street Journal no longer publishes 
the Wall Street Journal Prime Rate, a majority of the Administrative Representatives shall 
select an appropriate substitute. 
 
14.4. In the event any portion of any bill is disputed, to the extent the disputing Party has the 
legal authority to pay, the disputed amount shall be paid under protest when due and 
shall be accompanied by a written statement indicating the basis for the protest. If the 
protest is found to be valid by the Steering Committee, the Party shall be refunded any 
overpayment plus interest, accrued at the rate set forth in Subparagraph 14.3, prorated 
by days from the date payment was received by Phoenix to the date the refund check is 
mailed. 
 
14.5. In the event that this Agreement is terminated under Subparagraph 7.2, Phoenix shall 
refund each Party for any amount that Party paid under this Paragraph 14 that has not 
yet been expended or obligated for payment. 
 
15. 
DISPUTE RESOLUTION; CHOICE OF LAW: 
15.1. Any dispute under this Agreement shall first be submitted to the Steering Committee 
for resolution. The Steering Committee shall make all reasonable efforts to resolve the 
dispute. If the matter cannot be resolved by the Steering Committee, any Party may 
bring suit upon the matter, provided however, that it is expressly agreed that the venue 
shall only be in Maricopa County Superior Court or its successor court. 
 
15.2. This Agreement is governed and construed in accordance with the laws of the State of 
Arizona and any applicable federal law.  
 
15.3. In the event of any future dispute or action arising under this Agreement, the prevailing 
Party is entitled to recover its reasonable attorneys’ fees and costs incurred therein, 
including expert witness fees. 
 
15.4. Pending the resolution of a dispute, the Parties shall proceed, to the extent legally 
permissible, in a manner consistent with this Agreement, and shall make payments 
required in accordance with the applicable provisions of this Agreement. Amounts paid 
by a Party under Paragraph 14 during the pendency of such dispute shall be subject to 
refund and adjustment upon a final resolution of any dispute involving an amount due.

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16. 
UNCONTROLLABLE FORCES: 
 
No Party shall be considered to be in default in the performance of any of its obligations 
hereunder if failure of performance is due to an uncontrollable force. The term "uncontrollable 
force” shall mean any cause beyond the control of the party affected, including but not limited 
to failure of facilities, flood, earthquake, tornado, storm, fire, lightning, epidemic, war, riot, civil 
disturbance or disobedience, labor dispute, and action or nonaction by or failure to obtain the 
necessary authorizations or approvals from any governmental agency or authority or the 
electorate, labor or material shortage, sabotage and restraint by court order or public authority, 
which by exercise of due diligence and foresight such party could not reasonably have been 
expected to avoid and which by exercise of due diligence it shall be unable to overcome. 
Nothing herein shall be construed so as to require any Party to settle any strike or labor dispute 
in which it is involved. Any party rendered unable to fulfill any obligation hereunder by reason 
of an uncontrollable force shall exercise due diligence to remove such inability. 
 
17. 
NOTICE; CHANGE OF NAME OR ADDRESS: 
17.1. Except for invoices, all notices, requests, demands, and other communications under 
this Agreement shall be by electronic mail and shall be deemed to have been received 
when delivered, addressed as set forth in Exhibit D. All invoices shall be delivered by U.S. 
first class mail, addressed as set forth in Exhibit D. 
 
17.2. Any Party may change the addressee or address to which communications or copies are 
to be sent by giving notice of such change under Subparagraph 17.1. 
 
18. 
SEVERABILITY: 
Should any part of this Agreement be declared, in a final decision by a court or tribunal of 
competent jurisdiction, to be unconstitutional, invalid, or beyond the authority of a Party to 
enter into or carry out, such decision shall not affect the validity of the remainder of this 
Agreement, which shall continue in full force and effect and reformed, provided that the 
remainder of this Agreement, absent the excised portion, can be reasonably interpreted to give 
effect to the intentions of the Parties. 
19. 
WAIVER: 
The failure of any Party to insist on any one or more instances upon strict performance of any of 
the obligations of the other pursuant to this Agreement or to take advantage of any of its rights 
hereunder shall not be construed as a waiver of the performance of any such obligation or the 
relinquishment of any such rights for the future, but the same shall continue and remain in full 
force and effect.

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20. 
BINDING AGREEMENT: 
 
All of the provisions of this Agreement shall be binding upon, and inure to the benefit of, the 
Parties and their heirs, successors and assigns; provided, however, that no Party shall assign its 
rights and obligations under this Agreement to another entity without the written consent of 
the other Parties. Such consent to assignment shall not, however, be unreasonably withheld, 
conditioned, or delayed. 
 
21. 
NO THIRD-PARTY BENEFICIARIES: 
 
This Agreement is solely for the benefit of the Parties and does not create nor shall it be 
construed to create rights to any third party. No third party may enforce the terms and 
conditions of this Agreement. 
 
22. 
NO PARTNERSHIP AND NO JOINT VENTURE: 
 
Nothing contained in this Agreement shall be construed as creating a partnership or joint 
venture between the Parties hereto. The covenants, obligations, and liabilities contained in this 
Agreement are intended to be several and not joint or collective, and nothing contained herein 
shall be construed to create an association, joint venture, agency, trust, or partnership, or to 
impose a trust or partnership covenant, obligation, fiduciary duty, or liability between the 
Parties. Each Party shall be individually responsible for its own covenants, obligations, and 
liabilities as provided herein. 
 
23. 
AUTHORITY: 
 
The undersigned representative of each Party certifies that he or she is fully authorized by the 
Party whom he or she represents to enter into the terms and conditions of this Agreement and 
to legally bind the Party to it. 
 
24. 
APPROPRIATIONS: 
 
Each City and Town reserves the right to withdraw from this Agreement at the end of each fiscal 
year with no penalty or further financial obligation if that City or Town does not appropriate 
sufficient funds for the following year to meet its obligations under this Agreement. 
 
25. 
CONFLICT OF INTEREST: 
 
Notice is hereby provided of A.R.S. § 38-511.

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26. 
ENTIRE AGREEMENT; MODIFICATION; COUNTERPARTS: 
 
The terms, covenants and conditions of this Agreement constitute the entire Agreement 
between the Parties, and no understandings or obligations not herein expressly set forth shall 
be binding upon them. With the exception of revising Exhibits in accordance with Subparagraph 
10.6, this Agreement may not be modified or amended in any manner unless in writing and 
signed by the Parties. This Agreement may be executed in two or more counterparts, each of 
which shall be deemed an original, but all of which together shall constitute one and the same 
instrument. 
 
[signatures on the following pages]

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CITY OF PHOENIX, ARIZONA, 
a municipal corporation 
 
ATTEST: 
 
 
 
 
JEFFREY BARTON, City Manager 
 
 
 
______________________________ 
By: ______________________________ 
City Clerk, City of Phoenix 
 
 
Troy Hayes 
Director, Water Services Department 
 
APPROVED AS TO FORM: 
JULIE M. KRIEGH, City Attorney 
 
 
By: ______________________________ 
Name: ___________________________ 
Title: ____________________________

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TOWN OF GILBERT, ARIZONA 
a municipal corporation 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
By: ______________________________ 
 
 
 
 
 
 
 
Its:  _____________________________

CITY OF GLENDALE 
 
 
By:  
Name:  Kevin R. Phelps 
Title:  City Manager   
 
 
ATTEST 
 
By:  
Name: Julie K. Bower 
Title: City Clerk 
 
 
APPROVED AS TO FORM 
 
By:  
Name: Michael D. Bailey 
Title: City Attorney

16 
 
CITY OF MESA, ARIZONA 
a municipal corporation 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
By: ______________________________ 
 
 
 
 
 
 
 
Its:  _____________________________

17 
 
CITY OF SCOTTSDALE, ARIZONA 
a municipal corporation 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
By: ______________________________ 
 
 
 
 
 
 
 
Its:  _____________________________

18 
 
EPCOR WATER ARIZONA INC., 
an Arizona corporation 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
By: ______________________________ 
 
 
 
 
 
 
 
Its:  _____________________________

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AGREEMENT TO SHARE COSTS FOR THE FEASIBILITY STUDIES AND TESTING OF 
THE 91ST AVENUE ADVANCED WATER PURIFICATION FACILITY 
 
EXHIBIT A 
PARTIES 
 
City of Phoenix 
 
City of Mesa 
City of Glendale 
City of Scottsdale 
Town of Gilbert 
EPCOR Water Arizona Inc.

AGREEMENT TO SHARE COSTS FOR THE FEASIBILITY STUDIES AND TESTING OF 
THE 91ST AVENUE ADVANCED WATER PURIFICATION FACILITY 
 
EXHIBIT B 
POTENTIAL FLOW OWNERSHIP 
 
 
 
 
Party 
 
 
Percentage of 
Potential Flow 
Ownership 
City of Phoenix 
 
69.365 
City of Mesa 
 
7.936 
City of Glendale 
 
6.508 
City of Scottsdale 
 
7.460 
Town of Gilbert 
3.175 
 
EPCOR Water Arizona Inc. 
 
5.556

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AGREEMENT TO SHARE COSTS FOR THE FEASIBILITY STUDIES AND TESTING OF 
THE 91ST AVENUE ADVANCED WATER PURIFICATION FACILITY 
 
EXHIBIT C 
INITIAL CONTRIBUTION LEVEL 
 
 
PARTY 
 
INITIAL 
CONTRIBUTION 
LEVEL 
City of Phoenix 
 
$2,080,950 
City of Mesa 
 
$238,080 
City of Glendale 
 
$195,240 
City of Scottsdale 
 
$223,800 
Town of Gilbert 
 
$95,250 
EPCOR Water Arizona Inc. 
 
$166,680

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AGREEMENT TO SHARE COSTS FOR THE FEASIBILITY STUDIES AND TESTING OF 
THE 91ST AVENUE ADVANCED WATER PURIFICATION FACILITY 
 
EXHIBIT D 
CONTACT AND NOTICE INFORMATION 
 
 
Party 
Contact 
City of Phoenix 
 
Phoenix Water 
Services Department 
c/o Troy Hayes 
200 W. Washington St. 
Phoenix, AZ 85003  
Email:  troy.hayes@phoenix.gov 
City of Mesa 
 
Chris Hassert 
PO Box 1466  
Mesa, AZ 85211-1466  
Email:  christopher.hassert@mesaaz.gov 
City of Glendale 
 
Glendale Water Services Department 
c/o Ron Serio 
7070 W. Northern Ave. 
Glendale, AZ 85303  
Email:  rserio@glendaleaz.com 
City of Scottsdale 
 
Brian Biesemeyer 
9379 E. San Salvador 
Scottsdale, AZ 85258  
Email: bbiesemeyer@scottsdaleaz.gov 
Town of Gilbert 
Patrick Banger 
50 E. Civic Center Drive 
Gilbert, AZ 85296  
Email:  patrick.banger@gilbertaz.gov 
EPCOR Water Arizona Inc. 
 
Art Nunez 
2355 W. Pinnacle Peak Road, Suite. 300 
Phoenix, AZ 85027  
Email:  anunez@epcor.com

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AGREEMENT TO SHARE COSTS FOR THE FEASIBILITY STUDIES AND TESTING OF 
THE 91ST AVENUE ADVANCED WATER PURIFICATION FACILITY 
 
EXHIBIT E 
PROJECTED SCOPE OF WORK ITEMS 
 
 
This Exhibit E lists work items, costs, and schedule anticipated as necessary for the design and construction of the Advanced 
Water Purification Facility.  This list, all items on this list, all costs, and the schedule are projected and/or estimated and subject 
to change as necessary to advance the design and construction of the Facility. 
 
FY 25/26 –  
 
Partner Agreements 
 
Program Management Long Term Financial Plan 
Estimated cost - $502k 
 
FY 26/27 –  
 
Program Management Design Coordination (Phase 1A) and Funding Applications 
Estimated cost - $4.71M 
 
FY 27/28 –  
 
Design of Distribution Improvements  
 
Route Study 
 
Design of 91st Ave AWPF 
Estimated cost - $272M 
 
FY 28/29 –  
 
Land Procurement 
 
Design of 91st Ave Solids Upgrades 
Estimated cost - $26.1M  
 
FY 29/30 – 
 
Program Management Design Coordination (Phase 1B) 
 
Distribution Improvements Construction (GMP 1 & 2) 
 
91st Ave AWPF Construction (GMP 1 & 2) 
 
91st Ave Solids Upgrades (GMP 1) 
Estimated cost - $1.47B 
 
FY 30/31 –  
 
91st Ave AWPF Construction (GMP 3 & 4) 
 
Design of Brine Management 
 
Program Management Construction (Phase 2) 
Estimated cost - $964M 
 
FY 31/32 –  
 
Distribution Improvements Construction (GMP 3 & 4) 
 
Brine Management Construction  
 
91st Ave Solids Upgrades (GMP 2) 
Estimated cost - $1.32B