West Yuma Mesa Drainage UPDATERFP.pdf

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PROPOSAL PAMPHLET

FOR

West Yuma Mesa Storm Drainage System Update (CIP# 3.2601)

AUGUST 2026

INCLUDES:

REQUEST FOR PROPOSAL

SCOPE OF WORK

PROPOSAL GUIDELINES

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YUMA COUNTY

DEPARTMENT OF

ENGINEERING, FLOOD CONTROL DISTRICT

REQUEST FOR PROPOSALS

West Yuma Mesa Storm Drainage System Update

(CIP#3.2601)

The Yuma County Department of Engineering, Flood Control District is seeking professional services from qualified Engineering Consultants to prepare an update to the West Yuma Mesa Storm Drainage System Plan & the 28th Street Storm Drainage Study Master Plan.

The update to the plan shall include the evaluation/adjustment of the drainage area limits with hydrological analysis, new possible basin locations with discharge outlets, field survey and inventory of existing drainage facilities. The study should also include proposed flood control improvements, cost estimates with proposed construction phasing.

Proposals will be received until 5:00 p.m. M.S.T. on September 4, 2026 at the Yuma County Department of Engineering, 2351 W. 26th Street, Yuma, Arizona 85364.

The request for proposal package may be obtained from the address stated above or by calling (928) 817-5090, also online at http://www.yumacountyaz.gov/RFP

Yuma County reserves the right to reject any and all proposals.

Yuma County Department of Engineering/Flood Control

BY:__//ORIGINALSIGNED// __________________________

Alan Quintero, P.E., Flood Control Manager

The Yuma Sun August 17th and 24th http://www.yumacountyaz.gov/RFP

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PROPOSAL PACKAGE

West Yuma Mesa Storm Drainage System Update

(CIP#3.2601)

REQUEST FOR PROPOSALS

I. SCOPE OF WORK

A. General Information B. Project Information C. Project Definition D. Description of work Elements

II. PROPOSAL GUIDELINES

A. Submittal Information B. Proposal Content C. Evaluation and Selection D. General RFP Information

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TABLE OF CONTENTS

SCOPE OF WORK

A. GENERAL PROJECT INFORMATION

Objective Agency Sub-Consultant and Associates Compensation and Insurance Project Documents Quality Control Project Related Correspondence Questions

B. PROJECT INFORMATION

Geographic Area Existing Site Available Data Applicable Standards Estimated Construction Cost

C. PROJECT DEFINITION

D. DESCRIPTION OF WORK ELEMENTS

Field Investigation Field Surveying Yuma County Water User’s Association/ Bureau of Reclamation Cost estimate Submittal and Reviews Periodic Meetings Acceptance of the Work

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I. SCOPE OF WORK

A. GENERAL PROJECT INFORMATION

OBJECTIVE

To provide the County of Yuma Flood Control District with the following:

The consultant shall review, evaluate and update the existing West Yuma Mesa Storm Drainage Discharge System Plan, prepared by Cella Barr Associates, dated September 1996. In addition, the consultant shall also familiarize themselves with the 28th Street Storm Drainage Study Master Plan Report prepared by Dibble & Associates dated November 1997. The consultant shall identify new stormwater basin/outfalls as the Smucker Basin will no longer take it the amount of storm water it was initially designed for.

The consultant will need to conduct data research, field/surveys verifications and limits.

Adjust these drainage area limits as necessary and complete hydrological analysis of the revised drainage area. The study identified the Smucker Park Detention Basin as an outfall for stormwater. The basin was originally design to retain approximately 188 acre-feet.

However, the Smucker Park basin capacity has been reduced to approximately 50 acre-feet. Any stormwater that was programmed to be delivered to this basin will now need to be addressed with other storm water detention facilities which need to be identified in this update.

Recommendations to these alternatives will be provided, including alignment and grade for the approaches, right-of-way constraints, TCE requirements, estimated construction cost for each alternative. No aerial topographic survey has also been completed for this project. Field topographic surveys will be necessary to supplement this work.

It is the intent of this RFP for the consultant to evaluate which alternative will minimize the disruption to City of Yuma operations, neighborhoods, traffic, minimize construction costs and evaluate construction feasibility.

The consultant will be required to work closely with the Flood Control District, City of Yuma and the Bureau of Reclamation/ YCWUA to discuss the proposed alternatives, obtain their reviews and timelines, design standards and ultimately obtain their concurrence for any proposed work affecting their facilities.

AGENCY

The Yuma County Department of Engineering/Flood Control District is the Agency sponsoring this project and the one who will be contracting for the work. All liaison and correspondence will be between the consultant and the Yuma County Department of Engineering.

SUBCONSULTANT AND ASSOCIATES

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Any subconsultants or associates proposed to perform services on this project must be listed and made a part of the Consultant’s proposal.

COMPENSATION AND INSURANCE

A fee is to be negotiated after a selection has been made. Subsequent to the selection of the consultant, an Agreement is to be executed by and between the consultant and Yuma County Flood Control District. This Agreement will include the fee provisions, payment period, insurance, etc. Periodic payment for work will be made after elements of work are completed. Yuma County will require public liability insurance $1,000,000 single limit (including auto), property damage $300,000/each occurrence (including auto) and professional liability (errors and omissions).

PROJECT DOCUMENTS

All documents including field investigation reports and notes, field survey notes, photographs, video tapes, mapping, hydrology report, hydraulic analyses, geotechnical and design reports, right-of-way maps and descriptions, engineering calculations, original plans, cost estimates, meeting notes and minutes, computer runs, reference information supplied by Yuma County and all other information generated by the Consultant for this project are to be property of Yuma County and are to be delivered to Yuma County before final payment.

QUALITY CONTROL

The Consultant has total responsibility for the accuracy and completeness of all plans, studies and related designs prepared under this project and shall check all such material accordingly. The consultant shall have an Approved Quality Control Plan in effect during the entire time work is being performed under the contract. The plan shall establish a process whereby calculations are independently checked, plans checked, corrected and back-checked. All plans, calculations, and documents submitted for review shall be clearly marked as being fully checked by a qualified individual other than the originator.

PROJECT RELATED CORRESPONDENCE

The Consultant shall furnish copies of all written correspondence between the Consultants and his Subconsultants and any party pertaining specifically to this project to the County for their records within one (1) week of the receipt or mailing of said correspondence. The Consultant is not to submit plans to utilities or agencies when it is for relocation, approval or requesting permits. Yuma County will handle this work, with plans and information provided by the Consultant. It will be up to the Consultant to provide the County with all necessary sketches, plans and whatever is required by the agency or utility to obtain approval, relocations and permits.

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QUESTIONS

Any questions regarding this proposal can be directed to Mr. Frank Sanchez, PE, CIP Manager (928) 817-5120.

B. PROJECT INFORMATION

GEOGRAPHIC AREA

Study Area:

The study drainage area for the West Yuma Mesa Drainage Plan encompasses a drainage area along the western edge of the Yuma Mesa in the City of Yuma approximately one mile wide (to approximately 4th Avenue) and seven miles in length beginning along the East Main Canal at City 3rd Street and extending south to the Gardenhire Drain at County 13 ½ Street. For the 28th Street Storm Drainage Study, the watershed encompasses the area from Avenue A (Smucker Park) east to Pacific Avenue (Ave 2E) and City 16th Street on the north to 32nd Street on the south.

The encompassing area is comprised primarily of residential and commercial area with some vacant land to the south.

The land to the west of the East Main Canal is residential/commercial with lands primarily used for agriculture on the southern end.

AVAILABLE DATA

The following information is available for review on the County website and at the County Engineer's office:

West Yuma Mesa Storm Drainage Discharge System Plan, dated September 1996:

Volume 1: Hydrologic & Hydraulic Design Report Volume 2: Appendix A Appendix B Volume 3: Appendix B (cont.)

Volume 4: Appendix C Volume 5: Appendix D 28th Street Storm Drainage Study Master Plan Report, date November 1997

East Yuma Mesa Master Drainage Plan

APPLICABLE STANDARDS

This project will be designed to Yuma County Public Work Standards, latest editions or appropriate federal manuals not covered by the YCPWS.

PROJECT BUDGET:

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The budget set aside for this project is $500,000.

C. PROJECT DEFINITION

West Yuma Mesa Storm Drainage System & 28th Street Storm Drainage Study Updates:

The project consists of updated said plans. The West Yuma Mesa Study conducted an engineering study that determined the feasibility of improving and utilizing the existing East Main Canal and the Yuma Valley Drain System to convey stormwater collected and discharged from existing and proposed stormwater facilities located along the West Yuma Mesa. These irrigation and drainage facilities are operated by the Yuma County Water Users Association and the U.S. Bureau of Reclamation for agricultural purposes. The goal of the plan was to implement a plan that would ultimately mitigate flooding that has been experienced along the West Yuma Mesa area. The Flood Control District currently has an existing inter-governmental agreement with the YCWUA and the U.S. BOR to utilize the Yuma Valley Drainage System for this purpose.

The West Yuma Mesa Storm Drainage System identified Smucker Park as a potential location for a stormwater detention basin. The 28th Street Drainage Plan further expanded the drainage area for the development of Smucker Park to a regional basin with a capacity of retaining 188 acre-feet of stormwater. However, Smucker Park will now be constructed to retain only 50 acre-feet. The change in capacity necessitates the evaluation of alternative solutions to account for the loss of the stormwater capacity at Smucker Park.

1. WYMSDS:

a. Update the plan

b. Inventory and update improvements identified in the plan

c. Hydrological Analysis, 100-yr, 6-hr & 24hr storm events

d. Update the construction sequencing/prioritization

e. Update construction cost estimates

2. 28th Street Storm Drainage Study Master Plan:

a. Update the plan

b. Develop and provide alternatives to capture storm water run-off that will no longer be directed to Smucker Park.

c. Recommend best alternative.

d. Coordinate with Yuma County Water User’s Association, Bureau of

Reclamation, City of Yuma, utilities and stake holders.

3. Incorporate updates and changes for both Plans into one plan.

D. DESCRIPTION OF WORK ELEMENTS

The following is a description of the minimum work to be performed.

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FIELD INVESTIGATION

Perform all necessary field investigation, geotech and survey work that needs to be done to verify and confirm compatibility and use in the design.

FIELD SURVEYING

Complete field surveys to determine or verify improvements, verify elevations and size of outlet structures, culverts, roads, the East Main Canal, flood control facilities along the East Main Canal, various irrigation control devices and spillways, the East Drain and East Drain Extension.

GEOTECHNICAL INVESTIGATION

A geotechnical investigation shall be performed as necessary to determine soil properties for percolation design.

YUMA COUNTY WATER USERS ASSOCIATION / BUREAU OF RECLAMATION:

Close coordination with the Yuma County Water Users Association and Bureau of Reclamation is essential to facilitate this project. The YCWUA have other irrigation structures that will need to be identified. Consultant will be required to work closely with both agency’s to obtain their design standards, plan review timelines and ultimately their approval of the selected alternative.

COST ESTIMATE

a) For the study area:

The Consultant will provide the potential options and comparative cost estimates for construction and land acquisition of property.

SUBMITTAL AND REVIEWS:

Review submittals for the project are scheduled to be at 60%, 90% and 100% completion stages. Submittals shall be sent to all stakeholders for review.

PERIODIC MEETINGS

A minimum amount of meetings with the Flood Control District, City of Yuma, BOR, YCWUA and the Consultant is to include a meeting of project beginning and in conjunction with each of the above review submittal, a review meeting is to be scheduled with the Yuma County Flood Control District to discuss any review comments of schedule requirements for the project. Comment review meeting can be virtual. Each review meeting should be set to occur after the all agencies have completed their review.

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ACCEPTANCE OF THE WORK

The reports, bid packet including the plans, and specifications, special provisions, contract documents, cost estimate and all project documents will be considered complete and acceptable after comments have been received from affected utilities and agencies and all required revisions have been completed with all approvals and permits obtained.

At the project completion a final set of the plan and reports, design notes and computations, sealed by a registered professional engineer, registered in the State of Arizona, shall be submitted.

II. PROPOSAL GUIDELINES

A. SUBMITTAL INFORMATION

Six (6) copies of the proposal are to be submitted in accordance with the request for proposals to the Yuma County Department of Engineering, 2351 W. 26th Street, Yuma, Arizona 85364 and clearly marked "West Yuma Mesa Storm Drainage Discharge System Plan Update". Proposals are due no later than 4:00 p.m. on August 31, 2026.

B. PROPOSAL CONTENT

Proposals are not to be more than 10-pages (8 ½” x 12”) including appendix. Pages can be double sided. Transmittal cover letter shall be a single page and is not included within the 10-page limit. The proposal shall contain the following information to aid in the selection of the best qualified firm:

a. EXPERIENCE: Itemize and briefly describe similar projects and work which have been successfully completed by your firm. Describe experience of the professional and technical staff. Include names and phone numbers of client contacts. If subconsultants and/or associates are proposed provide experience information. (15 pts)

b. QUALIFICATIONS: Provide name of person who will be in charge of the project, provide names of people who would be doing the majority of the work and provide names of other key personnel that will work on the project.

Provide name of any subconsultants and/or associate who would be involved in completing with work. Provide qualifications of all personnel. Provide the availability of proposed team members. (20 pts)

c. ISSUES AND OBJECTIVES: Provide a description of what you see are the project issues and needs and what is necessary to be accomplished to meet the objective. (20 pts)

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d. PROJECT APPROACH: Provide a description of how you would approach the project and the scope of work you would intend to perform if awarded the contract. (20 pts)

e. TIME: Provide a time schedule to complete the work, after notice to proceed is issued. (10 pts)

f. FAMILIARITY WITH THE PROJECT AREA: Indicate if you are familiar with the general area and your knowledge of the local conditions applicable to each location. (10 pts)

g. ADDITIONAL INFORMATION: List any other pertinent information you feel would be helpful to us in determining your qualifications. (5 pts)

Note: Any section omitted from your submittal will result in no points being awarded for that section.

C. EVALUATIONS AND SELECTION

A selection panel will be established, will review the written material submitted and select a short list of qualified respondents. The selected firms may be requested to make a presentation of their qualifications to a panel. The panel will then determine the best qualified, the second and third best-qualified firm with its recommendation being forwarded to the Board of Supervisors for approval.

If the County is unsuccessful in negotiating a contract with the best-qualified team, the County may then proceed and negotiate with the second or third most-qualified team until a contract is executed, or may decide to terminate the selection process. The unsuccessful firms may be used as a linear list for future work.

D. GENERAL RFP INFORMATION:

Instructions: Yuma County shall not be held responsible for oral instructions. Any changes to this Request for Proposals will be in the form of an addendum, which shall be furnished to all registered Request for Proposal holders.

Any addenda or clarifications will be sent out to those who have registered and obtained this RFP from Yuma County Engineering. Firms must register as a Request for Proposal holder at the Yuma County Department of Engineering located at 2351 W. 26th Street, Yuma, AZ 85364, fill out and submit the attached “Receipt Acknowledgement Form” or call

(928) 817-5123 to register by phone.

County Rights: Yuma County reserves the right to reject any or all Statements of Qualifications, to waive any informality or irregularity in any Statement of Qualifications received, and to be the sole judge of the merits of the respective Statements of Qualifications received.

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Contact with County Employees: All firms / teams interested in this Project (including the firm’s employees, representatives, agents, lobbyists, attorneys, and sub-consultants) shall refrain, under penalty of disqualification, from direct or indirect contact for the purpose of influencing the selection or creating bias in the selection process with any person who may play a part in the selection process, including the evaluation panel, County Elected Officials, the County Administrator, the County Engineer/Flood Control Manager, County Department Heads, and other staff. This policy is intend to create a “level playing field” for all potential firms, assure that contract decisions are made in public and to protect the integrity of the selection process. All contact on this selection process should be addressed to the authorized County representative identified below.

County Representative: All inquiries and questions pertaining to this selection process or contract issues can be directed to Mr. Frank Sanchez, PE, CIP Manager (928) 817-5120, 2351 W. 26th Street, Yuma, AZ 85364, (928) 817-5121.

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P:\ENGINEERING\PROJECTS\3-2601 WEST YUMA MESA DRAINAGE PLAN UPDATE\RFP\WEST YUMA MESA DRAINAGE UPDATE-RFP.DOC