Contract No. 32600104- Huitt-Zollars.pdf

City of Buckeye — Regular Council Meeting (2026-06-16)

View PDF Meeting page

Extracted text (via pymupdf) 70652 characters
PROFESSIONAL SERVICES AGREEMENT 
BETWEEN 
THE CITY OF BUCKEYE 
AND 
HUITT-ZOLLARS, INC.  
CONTRACT NO. 32600104 
 
 April 
2, 2026
Huitt-Zollars, 
Inc., a Texas corporation 
 
 
RECITALS 
 
A. 
incorporated herein by reference, seeking statements of qualifications from vendors for professional 
consulting services. 
 
B. 
The Consultant submitted a Statement of Qualifications in response to the RFQ (the 
the City desires to enter into an Agreement with the Consultant to provide Professional Services for the 
Buckeye Area Drainage Master Plan Update project 
 
 
AGREEMENT 
 
NOW, THEREFORE, in consideration of the foregoing introduction and recitals, which are 
incorporated herein by reference, the following mutual covenants and conditions, and other good and 
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the City and the 
Consultant hereby agree as follows: 
 
1. 
Term of Agreement.  This Agreement shall be effective as of the date first set forth above 
and shall remain in full force and effect through July 31, 2026, unless terminated or extended as otherwise 
provided in this Agreement. After the expiration of the Initial term, this Agreement may be extended if: 
(i) it is deemed in the best interest of the City, subject to availability and appropriation of funds, (ii) 
at least 30 days prior to the end of the then-current term of the Agreement, the Consultant approves 
the extension in writing (including any price adjustments approved as part of this Agreement), as 
signature thereon, which approval may 
shall cause the Agreement to terminate at the end of the then-current term of this Agreement; 
provided, however, that the City may, at its discretion and with the agreement of the Consultant, 
elect to waive this requirement and renew this Agreement. The Initial Term and any extension are 
extension, the terms and conditions of this 
Agreement shall remain in full force and effect. 
 
2. 
Scope of Work.  The Consultant shall provide the Services as set forth in the Scope of 
Work and Fee Proposal attached hereto as Exhibit A and incorporated herein by reference.  The Consultant 
shall (i) provide the Services required by this Agreement, (ii) be responsible for all means, methods, 
techniques, sequences, and proceedings associated with the Services, and (iii) be responsible for the acts 
and omissions of its employees, agents and other persons performing any of the Services under a contract 
with the Consultant.   
 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
1

3. 
Compensation.  The City shall pay the Consultant an amount not to exceed Two Hundred 
Forty-Nine Thousand Six Hundred Ten Dollars and Zero Cents ($249,610.00) for the Services at the 
rates set forth in the Scope of Work and Fee Proposal. 
 
4. 
Payments.  The City shall pay the Consultant monthly, based upon work performed and 
completed to date, and upon submission and approval of invoices.  All invoices shall document and itemize 
all work completed to date.  Each invoice statement shall include a record of time expended and work 
performed in sufficient detail to justify payment. 
 
5. 
Safety Plan.  The Consultant shall provide the Services in accordance with a safety plan 
Standards Institute, and National Institute for Occupational Safety and Health standards.  If, in the 
shall notify the City, in writing, describing the reasons a safety plan is unnecessary.  The City reserves the 
right to request a safety plan following such notification.   
 
6. 
Documents.  All documents, including any intellectual property rights thereto, prepared 
and submitted to the City pursuant to this Agreement shall be the property of the City.  The City may use 
such documents for other purposes without further compensation to the Consultant; however, any reuse 
without written verification or adaptation by the Consultant for the specific purpose intended will be at the 
 
 
7. 
Consultant Personnel.  The Consultant shall provide experienced personnel, capable of and 
devoted to the successful performance of the Services under this Agreement.  The Consultant agrees to 
assign specific individuals to key positions.  If deemed qualified, the Consultant is encouraged to hire City 
residents to fill vacant positions at all levels.  The Consultant agrees that, upon commencement of the 
Services to be performed under this Agreement, key personnel will not be removed or replaced without 
prior written notice to the City.  If key personnel are not available to perform the Services for a continuous 
period exceeding 30 calendar days, or are expected to devote substantially less effort to the Services than 
initially anticipated, the Consultant shall immediately notify the City of same and shall, subject to the 
concurrence of the City, replace such personnel with personnel possessing substantially equal ability and 
qualifications. 
 
8. 
Inspection; Acceptance.  All work shall be subject to inspection and acceptance by the City 
-
inspection system that is acceptable to the City. 
 
9. 
Licenses.  The Consultant shall maintain in current status all federal, state, and local 
licenses and permits required for the operation of the business conducted by the Consultant.  The City has 
no obligation to provide the Consultant, its employees, or subcontractors any business registrations or 
licenses required to perform the specific services set forth in this Agreement.   
 
10. 
Materials; Equipment.  The Consultant shall provide, pay for, and insure under the requisite 
laws and regulations all labor, materials, equipment, tools, transportation, and other facilities and services 
necessary for the proper execution and completion of the Services. 
 
11. 
Performance Warranty.  In addition to any specific obligations set forth in Exhibit A, the 
Consultant warrants that the Services rendered will conform to the requirements of this Agreement and 
shall be carried out with the care and skill ordinarily used by members of the same profession practicing 
under similar circumstances at the same time and in the same locality. 
 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
2

12. 
Indemnification. To the fullest extent permitted by law, the Consultant shall indemnify and 
hold harmless the City and each council member, officer, employee, or agent thereof (the City and any such 
st any and all losses, claims, 
costs and the costs of appellate proceedings) to which any such Indemnified Party may become subject, 
thereof) are caused by the negligent acts, recklessness or intentional misconduct of the Consultant, its 
officers, employees, agents, or any tier 
services in the performance of this Agreement.  The amount and type of insurance coverage requirements 
set forth below will in no way be construed as limiting the scope of the indemnity in this Section. 
 
13. 
Insurance. 
 
13.1 
General. 
 
A. 
Insurer Qualifications.  Without limiting any obligations or liabilities of 
the Consultant, the Consultant shall purchase and maintain, at its own expense, hereinafter 
stipulated minimum insurance with insurance companies authorized to do business in the State of 
Arizona pursuant to ARIZ. REV. STAT. § 20-206, as amended, with an AM Best, Inc. rating of A- 
or above with policies and forms satisfactory to the City.  Failure to maintain insurance as specified 
 
 
B. 
No Representation of Coverage Adequacy.  By requiring insurance herein, 
or by approving or expressing satisfaction with insurance policies and forms pursuant to the 
provisions of this agreement, the City does not represent that coverage and limits will be adequate 
to protect the Consultant.  The City reserves the right to review any and all of the insurance policies 
and/or endorsements cited in this Agreement, but has no obligation to do so.  Failure to demand 
such evidence of full compliance with the insurance requirements set forth in this Agreement or 
failure to identify any insurance deficiency shall not relieve the Consultant from, nor be construed 
or deemed a waiver of, its obligation to maintain the required insurance at all times during the 
performance of this Agreement. 
 
C. 
Additional Insured
Compensation insurance and Professional Liability insurance, if applicable, shall name, to the 
fullest extent permitted by law for claims arising out of the performance of this Agreement, the 
City, its agents, representatives, officers, directors, officials and employees as Additional Named 
Insured as specified under the respective coverage sections of this Agreement. 
 
D. 
Coverage Term.  All insurance required herein shall be maintained in full 
force and effect until all work or services required to be performed under the terms of this 
Agreement are satisfactorily performed, completed, and formally accepted by the City, unless 
specified otherwise in this Agreement. 
 
E. 
Primary Insurance
with respect to performance of this Agreement and in the protection of the City as an Additional 
Insured. 
 
F. 
Claims Made.  In the event any insurance policies required by this 
in force or purchasing an extended reporting option, for three years past completion and acceptance 
of the services.  Such continuing coverage shall be evidenced by submission of annual Certificates 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
3

of Insurance and necessary endorsements citing applicable coverage is in force and contains the 
provisions as required herein for the three-year period. 
 
G. 
Waiver.  All policies, except for Professional Liability, including 
against the City, its agents, representatives, officials, officers, and employees for any claims arising 
out of the work or services of the Consultant.  The Consultant shall arrange to have such subrogation 
waivers incorporated into each policy via formal written endorsement thereto. 
 
H. 
Policy Deductibles and/or Self-Insured Retentions.  The policies set forth 
in these requirements may provide coverage that contains deductibles or self-insured retention 
amounts.  Such deductibles or self-insured retention shall not be applicable with respect to the 
policy limits provided to the City.  The Consultant shall be solely responsible for any such 
deductible or self-insured retention amount. 
 
I. 
Use of Subcontractors.  If any work under this Agreement is subcontracted 
in any way, the Consultant shall execute written agreements with its subcontractors containing the 
indemnification provisions set forth in this Section and insurance requirements set forth herein 
protecting the City and the Consultant.  The Consultant shall be responsible for executing any 
agreements with its subcontractors and obtaining certificates of insurance verifying the insurance 
requirements. 
 
J. 
Evidence of Insurance.  Prior to commencing any work or services under 
this Agreement, the Consultant will provide the City with suitable evidence of insurance in the 
form of certificates of insurance and a copy of the declaration page(s) of the insurance policies as 
required 
policies are placed with acceptable insurers as specified herein and provide the required coverages, 
conditions and limits of coverage specified in this Agreement and that such coverage and provisions 
are in full force and effect.  Confidential information such as the policy premium may be redacted 
from the declaration page(s) of each insurance policy, provided that such redactions do not alter 
any of the information required by this Agreement.  The City shall reasonably rely upon the 
certificates of insurance and declaration page(s) of the insurance policies as evidence of coverage 
but such acceptance and reliance shall not waive or alter in any way the insurance requirements or 
obligations of this Agreement.  If any of the policies required by this Agreement expire during the 
declaration page(s) to the City 30 days prior to the expiration date.  All certificates of insurance 
and declarations required by this Agreement shall be identified by referencing this Agreement.  A 
$25.00 administrative fee shall be assessed for all certificates or declarations received without the 
appropriate reference to this Agreement.  Additionally, certificates of insurance and declaration 
page(s) of the insurance policies submitted without referencing this Agreement will be subject to 
rejection and may be returned or discarded.  Certificates of insurance and declaration page(s) shall 
specifically include the following provisions: 
 
(1) 
The City, its agents, representatives, officers, directors, officials, 
and employees are Additional Insureds as follows: 
 
(a) 
Commercial General Liability 
 Under Insurance 
 
 
(b) 
Auto Liability  Under ISO Form CA 20 48 or equivalent. 
 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
4

(c) 
Excess Liability  Follow Form to underlying insurance. 
 
(2) 
respect to performance of this Agreement. 
 
(3) 
Compensation, waive rights of recovery (subrogation) against the City, its agents, 
representatives, officers, officials, and employees for any claims arising out of work or 
services performed by the Consultant under this Agreement. 
 
ACORD certificate of insurance form 25 (2014/01) is preferred.  If ACORD certificate of insurance 
to mail such notice shall impose no obligation or liability of any kind upon the company, its agents 
restrictive language deleted. 
 
K. 
Endorsements.  The Consultant shall provide the City with the necessary 
endorsements to ensure the City is provided the insurance coverage set forth in this Section 13. 
 
13.2 
Required Insurance Coverage. 
 
A. 
Commercial General Liability.  The Consultant shall maintain 
than $1,000,000 for each occurrence, $2,000,000 Products and Completed Operations Annual 
Aggregate, and a $2,000,000 General Aggregate Limit.  The policy shall cover liability arising 
from premises, operations, independent contractors, products-completed operations, personal 
injury, and advertising injury.  Coverage under the policy will be at least as broad as ISO policy 
clause.  To the fullest extent allowed by law, for claims arising out of the performance of this 
Agreement, the City, its agents, representatives, officers, officials, and employees shall be cited as 
an Additional Insured under ISO, Commercial General Liability Additional Insured Endorsement 
to include as an insured the person or organization shown in the Schedule, but only with respect to 
utilized to fulfill the requirements of this subsection, such Exc
equal or broader in coverage scope than underlying insurance. 
 
B. 
Vehicle Liability.  The Consultant shall maintain Business Automobile 
and non-
under t
policy form CA 00 01 12 93 or equivalent thereof.  To the fullest extent allowed by law, for claims 
arising out of the performance of this Agreement, the City, its agents, representatives, officers, 
directors, officials, and employees shall be cited as an Additional Insured under ISO Business Auto 
policy Designated Insured Endorsement form CA 20 48 or equivalent.  If any Excess insurance is 
utilized to 
equal or broader in coverage scope than underlying insurance. 
 
C. 
Professional Liability.  If this Agreement is the subject of any professional 
services or work, or if the Consultant engages in any professional services or work in any way 
related to performing the work under this Agreement, the Consultant shall maintain Professional 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
5

Liability insurance covering negligent errors and omissions arising out of the Services performed 
by the Consultant, or anyone employed by the Consultant, or anyone for whose negligent acts, 
mistakes, errors, and omissions the Consultant is legally liable, with an unimpaired liability 
insurance limit of $2,000,000 each claim and $2,000,000 annual aggregate.   
 
D. 
.  If the Consultant employs anyone 
statutes having jurisdiction over t
or services under this Agreement and shall also maintain Employers Liability Insurance of not less 
than $500,000 for each accident, $500,000 disease for each employee and $1,000,000 disease 
policy limit. 
 
13.3 
Cancellation and Expiration Notice.  The Consultant shall provide at least 30 days 
prior written notice to the City before insurance required herein expires, is canceled, or is materially 
changed. 
 
14. 
Termination; Cancellation.  The City may, by written notice to the Consultant as set forth 
in this Section, terminate this Agreement in whole or in part. 
 
14.1 
.  This Agreement is for the convenience of the City and, 
as such, may be terminated without cause after receipt by the Consultant of written notice by the City.  Upon 
termination for convenience, the Consultant shall be paid for all undisputed services performed to the 
termination date. 
 
14.2 
For Cause.  If either party fails to perform any obligation pursuant to this 
Agreement and such party fails to cure its nonperformance within 30 days after notice of nonperformance 
is given by the non-defaulting party, such party will be in default.  In the event of such default, the non-
defaulting party may terminate this Agreement immediately for cause and will have all remedies that are 
available to it at law or in equity including, without limitation, the remedy of specific performance.  If the 
nat
then the defaulting party will have such additional periods of time as may be reasonably necessary under 
the circumstances, provided the defaulting party immediately (A) provides written notice to the non-
defaulting party and (B) commences to cure its nonperformance and thereafter diligently continues to 
completion the cure of its nonperformance.  In no event shall any such cure period exceed 90 days.  In the 
event of such termination for cause, payment shall be made by the City to the Consultant for the undisputed 
portion of its fee due as of the termination date. 
 
14.3 
Due to Work Stoppage.  This Agreement may be terminated by the City upon 30 
Consultant abandons the Services without the consent of the City, the Consultant shall be liable for all 
actual, incidental, and consequential damages arising from or related to said abandonment, including, but 
not limited to: (A) the difference between the cost of a replacement consultant to complete the Services and 
the contract price for the Consultant under this Agreement; and (B) any additional charges, costs, fees or 
expenses for labor, materials or professional services incurred by the City as a result of delays caused by 
abandonment of the Services by the Consultant.  The City shall use its best efforts to replace the Consultant 
within a reasonable time. 
 
14.4 
Conflict of Interest.  This Agreement is subject to the provisions of ARIZ. REV. 
STAT. § 38-511.  The City may cancel this Agreement without penalty or further obligations by the City or 
any of its departments or agencies if any person significantly involved in initiating, negotiating, securing, 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
6

drafting, or creating this Agreement on behalf of the City or any of its departments or agencies is, at any 
time while this Agreement or any extension of this Agreement is in effect, an employee of any other party 
to this Agreement in any capacity or a consultant to any other party of this Agreement with respect to the 
subject matter of this Agreement. 
 
14.5 
Gratuities.  The City may, by written notice to the Consultant, cancel this 
Agreement if it is found by the City that gratuities, in the form of economic opportunity, future employment, 
entertainment, gifts, or otherwise, were offered or given by the Consultant or any agent or representative of 
the Consultant to any officer, agent or employee of the City for the purpose of securing this Agreement.  In 
the event this Agreement is canceled by the City pursuant to this provision, the City shall be entitled, in 
addition to any other rights and remedies, to recover and withhold from the Consultant an amount equal to 
150% of the gratuity. 
 
14.6 
Agreement Subject to Appropriation.  The City is obligated only to pay its 
obligations set forth in this Agreement as may lawfully be made from funds appropriated and budgeted for 
-
curr
budgeted purposes and appropriation of funds.  Should the City elect not to appropriate and budget funds 
to pay its Agreement obligations, this Agreement shall be deemed terminated at the end of the then-current 
fiscal year term for which such funds were appropriated and budgeted for such purpose and the City shall 
be relieved of any subsequent obligation under this Agreement.  The parties agree that the City has no 
this Agreement in any budget in any fiscal year other than the fiscal year in which this Agreement is 
executed and delivered.  The City shall be the sole judge and authority in determining the availability of 
funds for its obligations under this Agreement. The City shall keep the Consultant informed as to the 
availability of funds for this Agreement.  The obligation of the City to make any payment pursuant to this 
Agreement is not a general obligation or indebtedness of the City.  The Consultant hereby waives any and 
all rights to bring any claim against the City from or relating in any way to the C
Agreement pursuant to this Section. 
 
14.7 
Obligations Upon Receipt of Termination Notice.  Upon receipt of a notice of 
termination as set forth above, the Consultant shall (A) immediately discontinue all Services affected 
(unless the notice directs otherwise), and (B) deliver to the City copies of all data, reports, calculations, 
drawings, specifications, and estimates entirely or partially completed, together with all unused materials 
supplied by the City, related to the Services including any completed divisible part of the Services which 
can be deemed to stand alone (the completed divisible parts of the Services will be determined by both 
parties at the time of termination).  Such termination shall not relieve the Consultant of liability for errors 
and omissions.  Any use of incomplete documents for the Services or for any other project without the 
specific written authorization by the Consultant will be without liability or legal exposure to the Consultant.  
The Consultant shall appraise the work it has completed and submit the appraisal to the City for evaluation.  
 
15. 
Suspension of Work. 
 
15.1 
Order to Suspend.  The City may, for its convenience, order the Consultant, in 
writing, to suspend all or any part of the Services for such period of time as it may determine to be 
appropriate.   
 
15.2 
Adjustment to Contract Sum.  If the performance of all or any part of the Services 
is, for any unreasonable period of time, suspended or delayed by an act of the City in the administration of 
this Agreement, or by its failure to act within the time specified in this Agreement (or if no time is specified, 
within a reasonable time), an adjustment shall be made for any increase in cost of performance of this 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
7

Agreement necessarily caused by such unreasonable suspension or modified in writing accordingly.  
However, no adjustment shall be made under this clause for any suspension or delay (A) to the extent that 
performance was suspended or delayed for any other cause, including the fault or negligence of the 
Consultant, or (B) for which a change order is executed. 
 
16. 
Miscellaneous. 
 
16.1 
Independent Contractor.  It is clearly understood that each party will act in its 
individual capacity and not as an agent, employee, partner, joint venturer, or associate of the other.  An 
employee or agent of one party shall not be deemed or construed to be the employee or agent of the other 
for any purpose whatsoever.  The Consultant acknowledges and agrees that the Services provided under 
this Agreement are being provided as an independent contractor, not as an employee or agent of the City.  
The Co
the City.  The City does not have the authority to supervise or control the actual work of the Consultant, its 
employees or subcontractors.  The Consultant, and not the City, shall determine the time of its performance 
of the services provided under this Agreement so long as the Consultant meets the requirements of its agreed 
Scope of Work as set forth in Section 2 and in Exhibit A.  The Consultant is neither prohibited from entering 
into other contracts nor prohibited from practicing its profession elsewhere.  The City and the Consultant 
do not intend to nor will they combine business operations under this Agreement. 
 
16.2 
Applicable Law; Venue.  This Agreement shall be governed by the laws of the 
State of Arizona and suit pertaining to this Agreement may be brought only in courts in Maricopa County, 
Arizona. 
 
16.3 
Laws and Regulations.  The Consultant shall keep fully informed and shall at all 
times during the performance of its duties under this Agreement ensure that it and any person for whom the 
Consultant is responsible abides by, and remains in compliance with, all rules, regulations, ordinances, 
statutes, or laws affecting the Services, including, but not limited to, the following: (A) existing and future 
City and County ordinances and regulations, (B) existing and future State and Federal laws, and (C) existing 
and future OSHA standards. 
 
16.4 
Amendments.  This Agreement may be modified only by a written amendment 
signed by persons duly authorized to enter into contracts on behalf of the City and the Consultant. 
 
16.5 
Provisions Required by Law. Each and every provision of law and any clause 
required by law to be in this Agreement will be read and enforced as though it were included herein and, if 
through mistake or otherwise any such provision is not inserted, or is not correctly inserted, then upon the 
application of either party, this Agreement will promptly be physically amended to make such insertion or 
correction. 
 
16.6 
Severability.  The provisions of this Agreement are severable to the extent that any 
provision or application held to be invalid by a Court of competent jurisdiction shall not affect any other 
provision or application of this Agreement that may remain in effect without the invalid provision or 
application. 
 
16.7 
Entire Agreement; Interpretation; Parol Evidence.  This Agreement represents the 
entire agreement of the parties with respect to its subject matter, and all previous agreements, whether oral 
or written, entered into prior to this Agreement are hereby revoked and superseded by this Agreement.  No 
representations, warranties, inducements or oral agreements have been made by any of the parties except 
as expressly set forth herein, or in any other contemporaneous written agreement executed for the purposes 
of carrying out the provisions of this Agreement.  This Agreement shall be construed and interpreted 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
8

according to its plain meaning, and no presumption shall be deemed to apply in favor of, or against the 
party drafting this Agreement.  The parties acknowledge and agree that each has had the opportunity to 
seek and utilize legal counsel in the drafting of, review of, and entry into this Agreement. 
 
16.8 
Assignment; Delegation.  No right or interest in this Agreement shall be assigned 
or delegated by the Consultant without prior, written permission of the City, signed by the City Manager.  
Any attempted assignment or delegation by the Consultant in violation of this provision shall be a breach 
of this Agreement by the Consultant. 
 
16.9 
Subcontracts.  No subcontract shall be entered into by the Consultant with any 
other party to furnish any of the material or services specified herein without the prior written approval of 
the City.  The Consultant is responsible for performance under this Agreement whether or not 
subcontractors are used.  Failure to pay subcontractors in a timely manner pursuant to any subcontract shall 
be a material breach of this Agreement by the Consultant. 
 
16.10 Rights and Remedies.  No provision in this Agreement shall be construed, 
expressly or by implication, as waiver by the City of any existing or future right and/or remedy available 
by law in the event of any claim of default or breach of this Agreement.  The failure of the City to insist 
upon the strict performance of any term or condition of this Agreement or to exercise or delay the exercise 
services, shall not release the Consultant from any responsibilities or obligations imposed by this 
Agreement or by law, and shall not be deemed a waiver of any right of the City to insist upon the strict 
performance of this Agreement. 
 
16.11 
.  In the event either party brings any action for any relief, 
declaratory or otherwise, arising out of this Agreement or on account of any breach or default hereof, the 
prevailing party shall be entitled to receive from the other party reasonable attorney
costs and expenses, determined by the court sitting without a jury, which shall be deemed to have accrued 
on the commencement of such action and shall be enforced whether or not such action is prosecuted through 
judgment. 
 
16.12 Liens.  All materials or services shall be free of all liens and, if the City requests, 
a formal release of all liens shall be delivered to the City. 
 
16.13 Offset. 
 
A. 
Offset for Damages.  In addition to all other remedies at law or equity, the 
City may offset from any money due to the Consultant any amounts the Consultant owes to the 
City for damages that have been reduced to a judgment resulting from breach or deficiencies in 
performance or breach of any obligation under this Agreement. 
 
B. 
Offset for Delinquent Fees or Taxes.  The City may offset from any money 
due to the Consultant any amounts the Consultant owes to the City for delinquent fees, transaction 
privilege use taxes, and property taxes, including any interest or penalties. 
 
16.14 Notices and Requests.  Any notice or other communication required or permitted 
to be given under this Agreement shall be in writing and shall be deemed to have been duly given if (A) 
delivered to the party at the address set forth below, (B) deposited in the U.S. Mail, registered or certified, 
return receipt requested, to the address set forth below, or (C) given to a recognized and reputable overnight 
delivery service, to the address set forth below: 
 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
9

If to the City:  
City of Buckeye 
530 E. Monroe Avenue 
Buckeye, Arizona 85236 
Email: contracts@buckeyeaz.gov  
 
With copy to:   
City of Buckeye 
530 E. Monroe Avenue 
Buckeye, Arizona 85326 
Email: legal@buckeyeaz.gov  
 
If to Consultant: 
Huitt-Zollars, Inc. 
5050 N. 40th Street, Suite 100 
Phoenix, Arizona 85018 
Attn: Thomas Granillo, Vice President 
Email: tgranillo@huitt-zollars.com  
 
or at such other address, and to the attention of such other person or officer, as any party may designate in 
writing by notice duly given pursuant to this subsection.  Notices shall be deemed received (A) when 
delivered to the party, (B) three business days after being placed in the U.S. Mail, properly addressed, with 
sufficient postage, or (C) the following business day after being given to a recognized overnight delivery 
service, with the person giving the notice paying all required charges and instructing the delivery service to 
recipient, the provisions above governing the date on which a notice is deemed to have been received by a 
party shall mean and refer to the date on which the party, and not its counsel or other recipient to which a 
copy of the notice may be sent, is deemed to have received the notice. 
 
16.15 Confidentiality of Records.  The Consultant shall establish and maintain 
procedures and controls that are acceptable to the City for the purpose of ensuring that information 
contained in its records or obtained from the City or from others in carrying out its obligations under this 
Agreement shall not be used or disclosed by it, its agents, officers, or employees, except as required to 
Persons requesting such information should be 
referred to the City.  The Consultant also agrees that any information pertaining to individual persons shall 
not be divulged other than to employees or officers of the Consultant as needed for the performance of 
duties under this Agreement. 
 
16.16 Information Technology. 
 
A. 
Limited Access.  If necessary for the fulfillment of this Agreement, the 
City may provide the Consultant with non-
technology infrastructure.  The Consultant understands and agrees to abide by all City policies, 
standar
communication technology resources.  The Consultant shall enforce all such policies, standards, 
regulations, and restrictions with all the Consultan
subcontractor granted access in the performance of this Agreement and shall be granted and 
authorized only such access as may be necessary for the purpose of fulfilling the requirements of 
this Agreement.   
 
B. 
Permitted 
Access
subcontractors must receive prior, written approval from the City before being granted access to 
discretion, shall determine accessibility and limitations thereto.  The Consultant agrees that the 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
10

requirements of this Section shall be incorporated into all subcontractor/subconsultant agreements 
entered into by the Consultant.  It is further agreed that a violation of this Section shall be deemed 
to cause irreparable harm that justifies injunctive relief in court.  Notwithstanding the provisions in 
Section 14, a violation of this Section may result in immediate termination of this Agreement 
without notice. 
 
C. 
Data Confidentiality.  All City data and technical information, regardless 
of form, including originals, images, and reproductions, prepared by, obtained by, or transmitted to 
the Consultant in connection with this Agreement, are confidential, proprietary information owned 
by the City.  Except as specifically provided in this Agreement, the Consultant shall not, without 
the prior, written consent of the City Manager or authorized designee, (A) disclose data generated 
in the performance of the services to any third party, or (B) use City data and information.   
 
D.  
Data Security. Personal identifying information, financial account 
information, or restricted City information, whether in electronic format or hard copy, must be 
secured and protected at all times to avoid unauthorized access.  At a minimum, the Consultant 
must encrypt and/or password-protect electronic files.  This includes data saved to laptop 
computers, computerized devices, or removable storage devices.  When City information, 
regardless of its format, is no longer required by the Consultant to execute the work contracted by 
the City, the information must be redacted or destroyed through appropriate and secure methods to 
ensure the information cannot be viewed, accessed, or reconstructed. 
 
E. 
Compromised Security.  In the event that data collected or obtained by the 
Consultant in connection with this Agreement is believed to have been compromised, the 
Consultant shall immediately notify the City Manager, or authorized City designee.  The Consultant 
agrees to reimburse the City for any costs incurred by the City to investigate potential breaches of 
this data by the Consultant and, where applicable, the cost of notifying and/or assisting individuals 
who may be impacted by the breach. 
 
F. 
Disengagement.  In the event this Agreement is terminated by either party, 
the Consultant agrees to confer back to the City all of its data, in usable and normalized format, 
within 30 days of notice of termination.  There shall be no charge for the return of City data to the 
City. 
 
G. 
Survival.  The obligations of the Consultant under this Section 16.16 shall 
survive the termination of this Agreement. 
 
16.17 Records and Audit Rights.  To ensure that the Consultant and its subcontractors 
records, correspondence, accounting procedures and practices, and any other supporting evidence relating 
perform any work or services pursuant to this Agreement (all of the foregoing hereinafter referred to as 
hours by the City, to the extent necessary to adequately permit (A) evaluation and verification of any 
and indirect costs and overhead allocations) incurred, or units expended directly in the performance of work 
 with the 
Arizona employer sanctions laws referenced in subsection 16.18.  To the extent necessary for the City to 
audit Records as set forth in this subsection, the Consultant and its subcontractors hereby waive any rights 
to keep such Records confidential.  For the purpose of evaluating or verifying such actual or claimed costs 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
11

from the effective date of this Agreement for the duration of the work and until three years after the date of 
final payment by the City to the Consultant pursuant to this Agreement.  The Consultant and its 
subcontractors shall provide the City with adequate and appropriate workspace so that the City can conduct 
audits in compliance with the provisions of this subsection.  The City shall give the Consultant or its 
subcontractors reasonable advance notice of intended audits.  The Consultant shall require its 
subcontractors to comply with the provisions of this subsection by insertion of the requirements hereof in 
any subcontract pursuant to this Agreement. 
 
16.18 E-Verify Requirements.  To the extent applicable under ARIZ. REV. STAT. § 41-
4401, the Consultant and its subcontractors warrant compliance with all federal immigration laws and 
regulations that relate to their employees and their compliance with the E-Verify requirements under ARIZ. 
REV. STAT. § 23-
shall be deemed a material breach of this Agreement and may result in the termination of this Agreement 
by the City. 
 
 
16.19 Israel.  To the extent ARIZ. REV. STAT. § 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 
ARIZ. REV. STAT. § 35-393. 
 
16.20 Conflicting Terms.  In the event of any inconsistency, conflict, or ambiguity among 
the terms of this Agreement, any amendments, the Scope of Work, any City-approved Purchase Order, or 
the Fee Proposal, the documents shall govern in the order listed herein. 
 
16.21 Time is of the Essence.  The timely completion of the Services is of critical 
importance to the economic circumstances of the City. 
 
16.22 Meaning of Terms.  References made in the singular shall include the plural and 
the masculine shall include the feminine or the neuter. 
 
16.23 
Non-Exclusive Contract.  This Agreement is entered into with the understanding 
and agreement that it is for the sole convenience of the City.  The City reserves the right to obtain like goods 
and services from another source when necessary. 
 
16.24 
Forced Labor of Ethnic Uyghurs.  To the extent applicable under ARIZ. REV. STAT. 
§ 35-394, the Vendor warrants and certifies that it does not currently, and agrees for the duration of this 
Agreement that it will not use the forced labor, any goods or services produced by the forced labor, or any 
contractors, subcontractors, or suppliers that use the forced labor or any goods or services produced by the 
not in compliance with this paragraph, the Vendor shall notify the Town of the noncompliance within five 
business days of becoming aware of it.  If the Vendor fails to provide a written certification that the Vendor 
has remedied the noncompliance within 180 days after that, this Agreement shall terminate unless the 
termination date of this Agreement occurs before the end of the remedy, in which case this Agreement 
terminates on the contract termination date. 
 
16.25  Clickwrap Terms Excluded. In the event the 
 terms of sale or service 
agreement or other understanding shall in any way modify a City issued or approved contract or the terms 
of this Professional Services Agreement. 
[SIGNATURES ON FOLLOWING PAGE] 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
12

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date and year 
first set forth above. 
 
City  
 
 
 
 
 
Consultant 
 
CITY OF BUCKEYE,   
 
 
 
HUITT-ZOLLARS, INC., 
an Arizona municipal corporation 
 
 
a Texas corporation 
 
 
 
 
 
 
 
 
 
By:___________________________________ 
Doug Sandstrom, City Manager 
 
 
 
 
 
 
 
 
Its:___________________________________ 
 
 
 
 
 
 
 
 
 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
13

EXHIBIT A 
TO 
PROFESSIONAL SERVICES AGREEMENT 
BETWEEN 
THE CITY OF BUCKEYE 
AND 
HUITT-ZOLLARS, INC. 
 
[Scope of Work and Fee Proposal] 
 
See following pages.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
14

March 23, 2026
Tom Miles, PE, CFM
City of Buckeye
Senior Project Engineer
Development Services | Engineering
Re: Fee Proposal
Buckeye Area Drainage Master Plan-Update
Work Assignment No. 1
Dear Mr. Miles:
Attached is our proposal for professional engineering services of the Buckeye Area Drainage Master 
Plan-Update, Work Assignment Number 1. Included herein is our proposed Scope of Work and the 
Fee Schedule/Project Estimating sheet. 
Our proposed not-to-exceed fee is $248,610.00 plus reimbursables of $1,000.00 for a total not-to-
exceed fee of $249,610.00 to be billed on an hourly basis at the rates shown in the attached Project 
Estimating Sheet.
Thank you and if you have any questions, please feel free to call me at (602) 252-8384.
Sincerely,
Huitt-Zollars, Inc.
Christian D. Aguirre, P.E.
Project Manager
Thomas E. Granillo, PE, RPLS
Vice President
Enclosures:
Scope of Work
Fee Estimate
Schedule
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
15

SCOPE OF WORK
Buckeye Area Drainage Master Plan-Update
Work Assignment No. 1
Preliminary Data Collection, Preliminary Model Input Development, 
and Preliminary Hydrology and Hydraulics
March 23rd, 2026
PROJECT DESCRIPTION:
Huitt-Zollars, Inc. (CONSULTANT) will provide professional engineering services to support Work 
Assignment No. 1 for the Buckeye Area Drainage Master Plan Update (ADMP-U). The purpose of this 
work Assignment is to complete the preliminary efforts needed to support development of an updated 
drainage master plan for the study area.
Services under this work assignment will focus on project management and coordination, data collection 
and records review, identification and mapping of hydraulically significant facilities, preliminary mapping 
validation, and development of a preliminary hydrology and hydraulics modeling framework. The work 
will also include preliminary model validation, supporting documentation, and preparation of draft 
technical deliverables for review by the City of Buckeye.
This work assignment is intended to establish the preliminary technical basis for future phases of work. 
Final hydrology and hydraulics analyses, alternatives development, recommended improvements, 
design level refinement, and final reporting will be completed under subsequent work Assignments, as 
directed
GENERAL PROJECT TASKS
1.0
MEETINGS & COORDINATION
1.1
Project Management & Coordination: The Consultant will provide overall project 
management, including consultant coordination, project scheduling, invoicing, and 
monthly progress reporting, based on an anticipated five-month duration.
1.2
Adjacent Agencies & Stakeholder Coordination: The CONSULTANT will coordinate with 
adjacent agencies and key stakeholders, including the Flood Control District of Maricopa 
County (District), ADOT, Roosevelt Irrigation District, developers, and others as needed. 
This task includes up to four coordination meetings total, consisting of up to two 
meetings with adjacent agencies/stakeholders and up to two meetings with the 
DISTRICT. In addition, Huitt-Zollars will interview up to two stakeholders to identify 
known flooding issues, drainage concerns, and maintenance-related observations.
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
16

1.2.1 
Adjacent agencies & Stakeholder Coordination (2 total ) 
1.2.2 
Flood Control District of Maricopa County (2) 
 
1.3 
Meetings: The CONSULTANT will attend meetings and coordinate project teamwork 
efforts with the CITY. The following meetings are anticipated with this scope of work: 
1.3.1 
Kickoff Meeting (1);  
1.3.2 
Monthly Meetings (4); 
1.3.3 
Field Walk With Agency (1); 
1.3.4 
Comment Resolution Meetings (1);  
1.3.5 
GIS/Data Coordination Meetings (1);  
1.3.6 
Utility Coordination Meetings (1).  
2.0 
DATA COLLECTION: 
2.1 
GIS Data: The CONSULTANT shall collect and review as needed pertinent information 
available from the District, CITY, ADOT, SRP, and other stakeholders and sources.  The 
CITY and other sources will provide at no cost to the CONSULTANT the following project 
related references and information. The CONSULTANT will set up a meeting after the 
Pertinent data to 
be collected and reviewed may include, but not be limited to, the following: 
 
Available City of Buckeye GIS databases 
, 
 
Available Land use plans, 
 
As-built plans on an as needed basis, 
 
Available Hydrologic and hydraulic (H&H) studies from the CITY, FCDMC, and 
private developers, 
 
Green infrastructure and low impact development studies and reference 
materials, 
 
Storm drain maps and plans, 
 
Any Federal Emergency Management Agency (FEMA) approved floodplain 
delineation studies, and Letters of Map Amendment and/or Revisions, 
 
Future drainage improvement and development plans, 
 
Drainage complaints data and, other jurisdictional data, 
 
DTM or Raster DEM for the provided mapping in NAVD 1988  
 
Available aerial photos, 
 
Survey Control Reports (GDACS), 
 
Digital soil shapefile that encompasses the study area, 
 
Digital land use and zoning shapefiles, 
2.2 
Data Collection, Records Review, and Inventory: The CONSULTANT shall review 
relevant existing studies, plans, and reference documents for the study area, including 
land use plans, general plans, transportation plans, trail and park master plans, green 
infrastructure/LID studies, water conservation strategies, shade and tree master plans, 
and other applicable planning documents, to support the preliminary hydrology and 
hydraulics modeling. Additional data collection efforts and refinements will be 
performed under Work Assignment No. 2. 
2.3 
Inventory of Flooding and Drainage Problem Areas: The CONSULTANT shall collect 
available flooding and drainage complaint information for the project area to support 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
17

the preliminary hydrology and hydraulics modeling. This task will include review of 
available information provided by the CITY and through stakeholder input to identify 
documented flooding concerns and drainage deficiencies. The CONSULTANT shall 
prepare a Problem Area Map and GIS dataset showing the locations of identified 
flooding and drainage problem areas for inclusion in the final report. Further flooding 
and problem areas documentation will be performed as part of Work Assignment No. 2 
efforts 
2.4 
Preliminary Data Collection Documentation: The CONSULTANT shall prepare a brief 
memo summarizing the results of the research with a description of the specific findings 
of the proposed plans for the study area to be included in the final report. As part of the 
Preliminary Data Collection Report, the CONSULTANT shall provide a narrative 
description of the information collected, and sources consulted, flooding cause, extent, 
frequency, and qualitative risk, and maps and exhibits showing the locations of 
identified flooding and drainage issues. Further data collection documentation will be 
performed as part of Work Assignment No. 2 efforts. 
 
HYDRAULICALLY SIGNIFICANT FACILITY INVENTORY & MAPPING VALIDATION 
 
3.0 
HYDRAULICALLY SIGNIFICANT FACILITY INVENTORY & MAPPING VALIDATION: 
3.1 
In-Office Facility Inventory: The CONSULTANT shall use available data obtained through 
the data collection effort to develop a preliminary, spatially referenced inventory of 
hydraulically significant facilities within the study area to support the preliminary 
hydrology and hydraulics modeling. Facilities to be identified may include bridges, 
culverts, channels, storm drain systems, roadway crossings, berms, embankments, 
detention basins, retaining walls, irrigation features, and other structures deemed 
hydraulically significant by the CONSULTANT. The inventory will be developed using 
available GIS data, aerial mapping, record drawings, drainage studies, and other readily 
available information. This task is intended to support preliminary watershed level 
evaluation and does not include a final or exhaustive inventory of all drainage features. 
3.2 
Field Reconnaissance: The CONSULTANT shall perform limited field reconnaissance of 
select hydraulically significant facilities to support the preliminary hydrology and 
hydraulics modeling. Field observations may include general structure type, 
approximate size, material, inlet and outlet conditions, channel characteristics, visible 
obstructions, and other apparent hydraulic control features relevant to model 
development. Field reconnaissance is intended to supplement available mapping and 
record information and will be performed at a preliminary level. Additional detailed field 
investigation, structure measurements, and survey, if needed, shall be performed under 
a future Work Assignment. 
3.3 
Facility Inventory GIS Dataset & Documentation: The CONSULTANT shall prepare a 
preliminary GIS dataset and supporting documentation summarizing the hydraulically 
significant facilities identified through available records review, mapping review, and 
field reconnaissance. The dataset shall be developed for use in the preliminary 
hydrology and hydraulics modeling and for incorporation into the study documentation. 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
18

This task may also include identification of notable data gaps and recommendations for 
additional field verification or data collection under a future Work Assignment. 
4.0 
MAPPING VALIDATION:  
4.1 
Topographic Data Collection: The CONSULTANT shall compile and review available 
topographic data for use in the preliminary hydrology and hydraulics modeling. 
Available data may include USGS elevation data, aerial mapping, publicly available 
terrain data, and other existing topographic information provided by the CITY or 
obtained through public sources. Areas identified as potentially outdated or insufficient 
for preliminary evaluation will be noted and, where practical, supplemented with the 
best available existing data. No design level topographic survey is included under this 
task. 
4.2 
Topographic Mapping validation: Using the City of Buckeye benchmark network values, 
The CONSULTANT will perform limited field verification of select topographic features to 
support a reasonableness review of the available mapping. Given the size of the study 
area, the CONSULTANT will check shots at select locations throughout the watershed to 
evaluate overall mapping reliability. This effort is intended for preliminary validation 
only and does not constitute a topographic survey. Additional mapping, if needed, will 
be conducted under a future Work Assignment. 
5.0 
PRELIMINARY HYDROLOGY AND HYDRAULICS ANALYSES 
Preliminary hydrology and hydraulics analyses will be performed to support evaluation of modeling 
approach, parameter selection, and development of a preliminary existing conditions H&H model for use 
in future Work Assignments. The resulting model and datasets will serve as the basis for subsequent 
detailed analyses. Final hydrology and hydraulics analyses are not included in Work Assignment No. 1. 
5.1 
Topography Interpolation and Discretization: Topographic data used for estimation of 
grid elevations will be a high-resolution DTM or raster DEM developed using best 
available data (USGS DEM derived mapping). The CONSULTANT will provide a 
Topography Changes Dataset to document any changes made, if any. 
5.2 
Rainfall Frequency, Duration and Distribution: Preliminary modeling will consist of 
analyzing the 100-year storm events. Based on preliminary modeling results, the 
CONSULTANT will make recommendations on which storm return frequencies to 
analyze in future Work Assignments. 
Duration: The CONSULTANT will run the base models with both 6-hour and 24-hour 
durations and evaluate the results. The CONSULTANT will compare peak discharges and 
flow depths throughout the entire watershed to determine where one storm duration 
may control. The CONSULTANT will recommend the use of one storm duration (if 
practical) or two storm durations (if necessary) for all later analyses to be completed in 
future Work Assignments.  
Distribution: The CONSULTANT will develop a GIS file for assigning spatially varied 
point rainfall based on the depth duration frequency ASCII grids from NOAA Atlas 14 as 
approved by the District. The Pattern No. 1 distribution will be used for the 6-hour 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
19

storm, and the SCS Type II distribution will be used for the 24-hour storm. Selection 
and application of the design of rainfall distributions shall be approved by the District 
and CITY prior to commencing modeling if other than the aforementioned distributions 
are utilized. 
5.3 
Area Reduction Factors: The CONSULTANT shall use the Surface Feature 
Characterization coverage to assign the area reduction factor (ARF) to be used in the 
preliminary H&H model.   
5.4 
Surface Feature Characterization: The CONSULTANT will develop spatially varied land 
coverage. The Surface Feature Characterization (SFC) coverage will include 
n-values (n-values) based on Surface Feature Characterization data and n-value 
guidance provided by the District. 
5.5 
Hydraulically Significant Structures (Culverts): For the preliminary modeling efforts, 
significant hydraulic structures (culverts) along major washes/channels will be modeled 
as deemed appropriate by the CONSULTANT and the City. Culverts will be modeled 
using culvert equations or HY-8 developed rating curves. Culvert inverts and roadway 
profiles will be estimated from the best available topographic data. Final detailed 
hydraulic structure modeling will be conducted under Work Assignment No. 2.  
5.6 
Hydraulically Significant Walls: The CONSULTANT will review the preliminary model 
results for initial identification of significant wall/obstruction results. Significant 
hydraulic obstructions (walls) will be used for the preliminary hydrology and hydraulics 
modeling. The CONSULTANT will identify walls crossing significant drainage corridors. 
The refinement of a significant wall file is anticipated for future Work Assignment No. 
2.  
5.7 
Preliminary Rainfall Losses: The CONSULTANT will use the Surface Feature 
Characterization coverage for the entire study area for estimation of rainfall loss 
parameters. The Green and Ampt rainfall loss method shall be utilized for the 
infiltration parameter inputs. The CONSULTANT will utilize available soil survey data 
and the District
parameters.  
The Surface Feature Characterization coverage includes land use values for initial 
abstraction (IA) and RTIMP. No vegetation-cover correction shall be applied to XKSAT. 
The CONSULTANT will develop spatially varied infiltration values (XKSAT and rock 
outcrop). The CONSULTANT will set the limiting infiltration depth to four (4) inches for 
the initial modeling. The CONSULTANT will coordinate with the District and CITY for 
approval of final rainfall loss parameter values. Final infiltration refinements will be 
conducted under Work Assignment No. 2. 
5.8 
Hydraulically Significant Embankment Refinement: The CONSULTANT will review the 
preliminary model results to identify potential overtopping locations. The locations will 
be reviewed and refined to represent embankment locations more adequately. Final 
embankment refinements will be conducted under Work Assignment No. 2. 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
20

5.9 
Model Scenarios: Preliminary modeling will consist of the 100-year storm events. The 
CONSULTANT will run the base models with both 6-hour and 24-hour durations and 
evaluate the results. The CONSULTANT will compare peak discharges and flow depths 
throughout the entire watershed to determine where one storm duration may control. 
The CONSULTANT will recommend the use of one storm duration (if practical) or two 
storm durations (if necessary) for all later analyses to be completed in future Work 
Assignments.  
6.0 
MODEL VALIDATION 
6.1 
Preliminary Validation & Calibration: The CONSULTANT will calibrate the preliminary 
existing conditions hydrology & hydraulics models using methodologies outlined by the 
Flood Control District of Maricopa County Anecdotal data, regression equation, and 
resident pictures will be used to verify the model results. The existing conditions H&H 
model will be calibrated and verified following procedure developed by the Flood 
Control District of Maricopa County. Final validation and calibration refinements will be 
conducted under Work Assignment No. 2. 
6.2 
Parameter Adjustments: Based on the results of the preliminary validation and 
calibration effort, the CONSULTANT shall make reasonable adjustments to selected 
model parameters, where justified, to improve the preliminary representation of 
watershed response. Parameter adjustments may include refinement of rainfall loss 
inputs, roughness characterization, wall and embankment representation, hydraulic 
structure representation, and other model inputs that materially affect planning level 
results. Parameter adjustments performed under WA#1 are intended to support 
development of a preliminary existing conditions model and do not constitute final 
calibrated parameter selection. Final parameter refinement shall be completed under a 
future Work Assignment. 
6.3 
Preliminary H&H Model Scenarios: After the preliminary validation and calibration, 
The CONSULTANT shall run the governing 10-year model for flow pattern 
determination purposes. Final models scenarios will be conducted under Work 
Assignment No. 2. 
6.4 
Draft Model QA/QC Checklist Review & Submittal: The CONSULTANT shall perform 
internal QA/QC of the preliminary H&H model and supporting datasets prior to 
submittal. QA/QC shall be performed in general accordance with applicable 
 
standards and guidance for modeling. A draft model review checklist shall be prepared 
to document the status of model development, preliminary validation, key 
assumptions, and items requiring future refinement. The CONSULTANT shall address 
internal QA/QC comments prior to submittal to the CITY. Final validation and 
calibration refinements will be conducted under Work Assignment No. 2. 
7.0 
DELIVERABLES 
7.1 
Updated GIS Dataset / Exhibit: The CONSULTANT shall prepare and submit updated 
preliminary GIS datasets, mapping, and exhibits developed under WA#1 to support the 
preliminary hydrology and hydraulics report and future Work Assignments. 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
21

Deliverables may include, as applicable, updated problem area mapping, hydraulically 
significant facility inventory mapping, topography change documentation, model input 
coverage summaries, and other preliminary exhibits prepared as part of the WA#1 
analyses. These materials are intended to support planning level review and future 
refinement and are not final deliverables for design or final report purposes. 
7.2 
Preliminary Hydrology & Hydraulics Report: The CONSULTANT shall prepare a 
preliminary hydrology and hydraulics report with exhibits documenting the preliminary 
modeling approach, assumptions, input parameters, available data reviewed, 
preliminary validation efforts, and preliminary results developed under WA#1. The 
report shall be prepared to support planning level decision making and future Work 
Assignments and is not intended to serve as a final hydrology and hydraulics report. 
This task includes one draft submittal, one comment resolution meeting, and one 
model/report update based on consolidated review comments. Final Hydrology & 
Hydraulics Report will be conducted under Work Assignment No. 2. 
7.3 
QA/QC Checklist Review & Submittal: The CONSULTANT shall finalize and submit the 
QA/QC checklist associated with the preliminary H&H model and supporting 
documentation prepared under WA#1. The checklist shall summarize the status of 
model development, internal QA/QC review, key assumptions, completed preliminary 
validation steps, and items identified for future refinement under subsequent Work 
Assignments. This task is limited to preparation and submittal of the preliminary 
checklist package associated with WA#1 deliverables. 
8.0 
REIMBURSABLE & ALLOWANCES: 
8.1 
Allowances: This may include data acquisition feed or if during the process of 
completion of Work Assignment 1, additional work may become necessary due to 
situations unforeseen at this time. This optional work by the CONSULTANT is not 
authorized with the Notice to Proceed of Work Assignment 1, and must be authorized 
in writing by the CITY based upon a written scope of work as determined by the CITY 
during the contract period. Optional items under this Work Assignment include 
additional field investigations, submittals, work tasks, and any other CONSULTANT 
services needed to meet the design intent of this Work Assignment. 
9.0 
ASSUMPTIONS & EXCLUSIONS: 
9.1 
Utility Maps: The CITY will provide utility maps. 
9.2 
Reimbursables: It is assumed the CITY will provide for reproduction costs and review 
fees, or direct costs attributable to the project.  
9.3 
Geotechnical Evaluation: No Geotechnical Evaluation will be done as part of WA#1.   
9.4 
Topographic Survey  No design level topographic survey will be done as part of 
WA#1.   
9.5 
Public Outreach  No public outreach will be done as part of WA#1.   
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
22

9.6 
1D Channels  No 1D channels will be modeled as part of WA#1. 
10.0 
WORK ASSIGNMENT NO. 2 (WA#2) PLANNING 
10.1 
WA2 Detailed Scope and Fee: The CONSULTANT will prepare a detailed scope of work 
and fee for Work Assignment No. 2 based on the WA#1 findings and 
recommendations. 
10.2 
Project Work Plan Update: The CONSULTANT will prepare a PWP Update that will be 
used as a roadmap for the next Work Assignment. 
Buckeye Area Drainage Master Plan Update 
Contract No. 32600104 
Huitt-Zollars, Inc.
23

etings
18,300.00
$    
12
              
36
              
-
             
40
              
-
             
-
             
-
             
-
             
a Collection
21,210.00
$    
4
                 
20
               
6
                 
68
               
24
               
-
              
-
              
-
              
Data
3,340.00
$       
-
              
4
                 
-
              
12
               
4
                 
-
              
-
              
-
              
a Collection, Records Review, and Inventory
7,180.00
$       
-
              
8
                 
4
                 
24
               
4
                 
-
              
-
              
-
              
entory of Flooding and Drainage Problem Areas
3,940.00
$       
4
                 
4
                 
-
              
12
               
-
              
-
              
-
              
-
              
iminary Data Collection Documentation
6,750.00
$       
-
             
4
                
2
                
20
              
16
              
-
             
-
             
-
             
LY SIGNIFICANT FACILITY INVENTORY & MAPPING VALIDATION
draulically Significant Facility Inventory
43,740.00
$    
1
                 
10
               
8
                 
136
             
132
             
-
              
-
              
-
              
Office Facility Inventory
11,750.00
$    
1
                 
4
                 
-
              
40
               
32
               
-
              
-
              
-
              
eld Reconnaissance
23,690.00
$    
-
              
2
                 
-
              
80
               
80
               
-
              
-
              
-
              
ility Inventory GIS Dataset & Documentation
8,300.00
$       
-
              
4
                 
8
                 
16
               
20
               
-
              
-
              
-
              
pping Validation
23,980.00
$    
2
                 
12
               
4
                 
12
               
20
               
4
                 
16
               
6
               
ographic Data Collection
4,070.00
$       
1
                 
4
                 
-
              
-
              
20
               
-
              
-
              
-
              
ographic Mapping validation
19,910.00
$    
1
                
8
                
4
                
12
              
-
             
4
                
16
              
6
              
HYDROLOGY & HYDRAULICS MODELING
del Input Parameters
79,690.00
$    
9
                 
44
               
20
               
164
             
260
             
-
              
-
              
-
              
opography Interpolation and Discretization
9,480.00
$       
2
                 
4
                 
8
                 
20
               
20
               
-
              
ainfall Frequency, Duration and Distribution
5,580.00
$       
-
              
4
                 
-
              
12
               
20
               
-
              
-
              
-
              
rea Reduction Factors
5,050.00
$       
-
              
2
                 
-
              
8
                 
24
               
-
              
-
              
-
              
urface Feature Characterization (SFC) 
9,580.00
$       
-
              
4
                 
-
              
20
               
40
               
-
              
-
              
-
              
ydraulically Significant Structures (Culverts)
10,760.00
$    
-
              
8
                 
-
              
40
               
20
               
-
              
-
              
-
              
ydraulically Significant Walls
3,930.00
$       
-
              
2
                 
-
              
8
                 
16
               
-
              
-
              
-
              
reliminary Rainfall Losses
11,910.00
$    
1
                 
8
                 
4
                 
20
               
40
               
-
              
-
              
-
              
ydraulically Significant Embankment Refinement
11,580.00
$    
4
                 
8
                 
4
                 
12
               
40
               
-
              
-
              
-
              
Model Scenarios
11,820.00
$    
2
                 
4
                 
4
                 
24
               
40
               
-
              
-
              
-
              
del Validation
25,970.00
$    
-
              
10
               
24
               
36
               
84
               
-
              
-
              
-
              
reliminary Validation & Calibration
7,910.00
$       
-
              
2
                 
4
                 
20
               
24
               
-
              
-
              
-
              
arameter Adjustments
7,900.00
$       
-
              
2
                 
2
                 
16
               
32
               
-
              
-
              
-
              
reliminary H&H Model Scenarios
4,310.00
$       
-
              
4
                 
2
                 
-
              
20
               
-
              
-
              
-
              
raft Model QA/QC Checklist Review & Submittal
5,850.00
$       
-
             
2
                
16
              
-
             
8
                
-
             
-
             
-
             
cumentation & Deliverables
27,330.00
$    
6
                 
22
               
24
               
40
               
56
               
-
              
-
              
-
              
dated GIS Dataset / Report / Exhibit
4,860.00
$       
2
                 
4
                 
4
                 
-
              
16
               
-
              
-
              
-
              
iminary Hydrology and Hydraulics Report
17,680.00
$    
4
                 
16
               
8
                 
40
               
32
               
-
              
-
              
-
              
/QC Checklist Review & Submittal
4,790.00
$       
-
             
2
                
12
              
-
             
8
                
-
             
-
             
-
             
Total Hours
39
178
90
496
576
4
16
6
SUBTOTAL FEES
248,610.00
$  
$11,310.00
$43,610.00
$23,850.00
$74,400.00
$80,640.00
$1,080.00
$2,320.00
$11,400.0
E & ALLOWANCES:
mbursables
1,000.00
$      
0
0
0
0
0
0
0
mbursable & Allowances (TBD)
1,000.00
$       
-
              
-
              
-
              
-
              
-
              
-
              
-
              
-
              
-
$                
-
              
-
              
-
              
-
              
-
              
-
              
-
              
-
              
SUBTOTAL ALLOWANCE FEES
1,000.00
$      
$0.00
$0.00
$0.00
$0.00
$0.00
$0.0
NOT TO EXCEED TOTAL WITH ALLOWANCES
249,610.00
$   
$11,310.00
$43,610.00
$23,850.00
$74,400.00
$80,640.00
$1,080.00
$2,320.00
$11,400.0