Project Information

Bid Title

5676 - Engineering Services for Storm Drain Master Plan Update

Issuing Agency

City of Redding

Location

California

Published Date

Feb 18, 2026

Closing Date

Mar 19, 2026

Government Level

State & Local

Status

Closed

Original Source

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Bid Documents

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Project Description

Open Date	Description	Close Date
February 17, 2026	5676 - Engineering Services for Storm Drain Master Plan Update OPEN	March 19, 2026

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February 17, 2026

REQUEST FOR PROPOSAL

FOR

ENGINEERING SERVICES FOR

STORM DRAIN MASTER PLAN UPDATE

FOR THE

CITY OF REDDING, CALIFORNIA

(Schedule Number 5676)

In accordance with the provisions of the Municipal Code of the City of Redding, sealed

proposals must be submitted to the City Clerk’s 3rd floor office located at City Hall, 777 Cypress

Avenue, Redding, California 96001 prior to 3:00 p.m. PT, Thursday, March 19, 2026, for

furnishing the City of Redding a proposal for providing Engineering Services for Storm Drain

Master Plan Update, per the scope of work and general conditions.

PROPOSALS RECEIVED AFTER THIS TIME AND DATE MAY NOT BE ACCEPTED

OR CONSIDERED.

The said proposals will be opened at 3:00 p.m. PT, on Thursday, March 19, 2026, in the

designated City Hall Conference Room as posted in the main lobby of City Hall, 777 Cypress

Avenue, Redding, California.

The bidder shall provide the original (unbound), six (6) copies and a USB drive with a PDF

copy of the proposal. Electronic submission of proposals will not be allowed. One (1) set of the

Fee Proposal is to be submitted in a separate, sealed envelope. Proposal package may be

obtained

from

the

City’s

website,

https://www.cityofredding.gov/government/departments/purchasing/bid_opportunities.php. The

City will award any resulting contract in a manner consistent with the City Purchasing Ordinance.

The cut-off date and time for receiving questions regarding this bid is 5:00 p.m. PT, on

Tuesday, March 3, 2026. All inquiries must be made in writing and may be submitted to the email

address shown below.

THE CITY OF REDDING

Purchasing Division

Michelle Kempley, Purchasing Officer

mkempley@cityofredding.gov

NOTE

If a potential bidder/proposer received this solicitation document through

some means other than surface mail from the City of Redding (such as from the City

of Redding Internet web site, or from another prospective bidder/proposer), it is the

responsibility of the potential bidder/proposer to advise the assigned City of Redding

Purchasing contact of its intention to submit a bid/proposal so that any addenda or

other correspondence related to this solicitation will be sent to the potential

bidder/proposer. When contacting the Purchasing Division, the bidder/proposer shall

provide the solicitation number located on the cover page of this document.

Transmittal of this information must be in writing, by U.S. Mail, or e-mail.

Transmittal of this information via telephone is not acceptable.

Please submit bid/proposal as directed in the RFP package. Forward to:

City of Redding

City Clerk

777 Cypress Avenue

Redding, CA 96001

Proposals must be received by the City Clerk’s office prior to 3:00 p.m. PT on the date

indicated below. Mailing envelope is to be clearly marked on the outside with the following

notation:

“Proposal for Schedule No. 5676; opening at

3:00 P.M., on Thursday, March 19, 2026”

Note: Signatures must be legible, indicating full first and last name.

The City of Redding

Purchasing Division

REQUEST FOR PROPOSALS

FOR

ENGINEERING SERVICES FOR

STORM DRAIN MASTER PLAN UPDATE

FOR THE CITY OF REDDING

Schedule Number: 5676

I. INTRODUCTION

The City of Redding Public Works Department is soliciting proposals to provide

professional engineering and hydrologic and hydraulic (H&H) services to prepare an

update of specific drainage basins within the Montgomery Watson City-Wide Master

Storm Drain Study (Project). It is the intent of the City to hire a qualified consultant who

can provide hydrologic and hydraulic modeling culminating in updated hydrology models

and associated hydraulic models for the Canyon Hollow, Oregon Gulch, Olney Creek,

Bonnyview Drain, and Churn Creek Basins, Storm Drain Study Report and associated

floodplain mapping.

The City currently maintains drainage basin model developed using HEC-1, which utilizes

the preprocessor named FLOW, and HEC-RAS. These models require updates to reflect:

 Recent land-use and impervious surface changes

 New topographic data

 New or rehabilitated stormwater infrastructure

 Requirements from regulatory agencies (FEMA, Caltrans, etc.)

The updated models will be used to support floodplain map revisions, mitigations project

development, and emergency management.

On October 7, 2025, Council accepted and budgeted $1,000,000 in Federal funding for the

Project. The CDHCD – MIT grant provides $900,000 funding for design services that

includes consultant and staff design support. The successful consultant must be aware of

the financing limitations and be able to provide a clear plan for delivering documents that

meet the project goals within the aforementioned budget constraints.

The purpose of the storm water master plan update will be to fully analyze the drainage

basins using updated City contour data and area development since the Montgomery

Watson Study and the 2004 model update of the above-mentioned drainage basins.

A Consulting and Professional Services Contract (CPSC) is expected to be awarded in May

2026 and the scope of work to be completed by October 31, 2027. The period to complete

the work will be negotiated with the successful consultant. The City intends to select a

single consultant (team) for all aspects of the work necessary to complete all tasks of the

scope of work. Any consultant responding to the RFP must be willing to commit the

necessary resources to complete the work within a mutually agreed upon schedule.

II. GENERAL

In order for the consultant to be considered qualified, the firm or team must demonstrate

experience in project management, hydrologic and hydraulic modeling, familiarity with

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FEMA NFIP regulatory requirements, experience developing or updating city-wide

drainage basin models, and the ability to manage large datasets, GIS-based modeling, and

1D/2D flood simulations. Interested consultants are invited to submit qualifications in

accordance with the requirements of this Request for Proposals (RFP).

All work shall meet City of Redding standards for hydrologic and hydraulic modeling in

accordance with the current City of Redding Construction Standards

(https://www.cityofredding.gov/government/departments/public_works/engineering/const

ruction_standards___handouts/index.php), City of Redding Hydrology Manual, and the

requirements contained herein.

The consultant shall assure the City that it will comply with the Americans with Disabilities

Act (ADA), as well as all applicable regulations and guidelines issued pursuant to the ADA

(42 U.S.C. 12101 et seq.).

The consultant must comply with Government Code Section 8355 in matters relating to

providing a drug-free workplace.

III. SCOPE OF SERVICES

The following services will be required for the Canyon Hollow, Oregon Gulch, Olney

Creek, and Bonnyview Drain Basins:

Task 1: Project Management Review and Scheduling:

Provide all Contract Management and Quality Control Services throughout the duration of

the project including:

 All meetings, agendas, and summaries,

 Schedules and schedule updates;

 Prepare and submit monthly progress report with monthly progress payment. The

monthly progress report shall include:

 An overview of work accomplished during the previous month;

 A description of current key activities and an updated schedule for each task

and subtask.

 A list of tasks for the following month;

 A bar graph showing total contract budget, monthly invoiced amounts,

cumulative amount invoiced and project billings to end of project;

 An earned-value statement that shall clearly describe the relationship between

fee to date, percent work complete, and percent time remaining; and

 A Schedule Summary indicating whether the project is on schedule and any

schedule concerns or critical path items (a Recovery Plan/Schedule for any

activities that fall more than 2 weeks behind schedule).

 Develop a Quality Assurance/Quality Control Program including a formal project

specific Quality Plan,

 Correspondence and project file maintenance in accordance with City of Redding file

management.

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The consultant’s Project Manager shall play an active role in the management and

coordination of the project to include monthly meetings with City staff to discuss project

status, problems, budgeting, and other areas that have an adverse effect on the work.

Task 2: Data Collection and Review

Review City’s hydrologic and hydraulic information including;

 Relevant reports, studies, master plans, GIS data, maps, HEC-1 and HEC-RAS models

and other data gathered from meeting with staff.

 Related Capital Improvement Program (CIP) completed and planned projects.

 As-built culvert information

 LiDAR data

Task 3: Survey

The Consultant shall provide survey services, as necessary, to support the development and

refinement of the hydrologic and hydraulic models. Survey efforts shall be targeted and

limited to locations where existing data is insufficient for reliable modeling.

Survey tasks may include, but are not limited to:

 Collection of channel and overbank cross sections required for hydraulic and floodplain

modeling.

 Survey of bridges, culverts, and other drainage structures, including relevant geometric,

structural, and hydraulic features.

 Establishment of horizontal and vertical control consistent with City and applicable

regulatory standards.

 Integration of surveyed data into the hydraulic and floodplain models developed under

Task 4.

The Consultant shall coordinate proposed survey locations and limits with the City prior to

data collection and shall document all survey methods, assumptions, and deliverables.

Task 4: Hydrologic Modeling

The Consultant will be responsible for the following items:

 Update watershed boundaries, hydrologic parameters, and land-use conditions

 Revise existing hydrologic models using the City’s HEC-1 preprocessor FLOW to

reflect actual current conditions

 Revise HEC-1 Schematics as needed

 Update 10-, 25-, and 100-year peak flows

Deliverables: updated HEC-1 models

Task 5: Hydraulic Modeling

 Update hydraulic models using HEC-RAS

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Commodity Codes

• NAICS 541330Engineering Services

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