This Solicitation opportunity from California was posted on August 24, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

Top

CalSim Model Development and Application

Closed

10220250State & Local

Submission Closed09/15/2026, 09:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

Active Opportunities Like This One

NAICS: 541330

New

Pure Water Southern California Direct Potable Reuse Testing Facility

Solicitation # pure-water-southern-california-direct-potable-reuse-testing-facility

Kiewit Infrastructure West Co. is soliciting proposals for the Pure Water Southern California Direct Potable Reuse Testing Facility project located in California. This opportunity is specifically set aside for small businesses, including SBA certified Veteran Owned, Service-Disabled Veteran Owned, and Women-Owned Small Businesses, falling under NAICS code 541330. The solicitation was posted on October 28, 2026, with a response deadline of November 3, 2026. Interested parties should coordinate with the primary point of contact, Sepideh Sippy Aria, for further details regarding the submission process and project requirements.

Kiewit Infrastructure West Co.

POSTED

DEADLINE

Business Impact Analysis and Update Disaster Recovery Plan Services – Inland Empire Utilities Agency

Solicitation # business-impact-analysis-update-disaster-recovery-plan-services-inland-empire-utilities-agency

Aanko Technologies Inc. is soliciting certified Disadvantaged Business Enterprise and Small Business Enterprise sub-consultants and suppliers to provide specialized professional services for the Inland Empire Utilities Agency in San Bernardino and Riverside Counties, California. The scope of work focuses on emergency management, business continuity planning, technical writing, data collection, and the updating of IT and disaster recovery plans. Relevant expertise should align with NAICS codes for administrative management, engineering services, computer systems design, and public relations. Interested parties must submit their responses by November 17, 2026. The primary point of contact for this solicitation is Liz Jordan-Wettstein. This opportunity is specifically targeted toward DBE certified firms to support critical infrastructure resilience and disaster recovery documentation within the state of California.

Aanko Technologies Inc.

POSTED

DEADLINE

Geotechnical Analysis and Stability Modeling

Upper Thames River Conservation Authority

POSTED

DEADLINE

Traffic Signal Installation Oversight and Quality AssuranceThe Traffic Signal Installation Oversight and Quality Assurance subcontract involves providing technical supervision and oversight for prime contractors working on regional signal synchronization projects for the City of Aliso Viejo. The selected provider will be responsible for conducting on-site field supervision to ensure that installation contractors adhere to approved plans, specifications, and estimates, as well as Caltrans signal installation standards. Key deliverables include the performance of post-construction walkthroughs and the submission of detailed installation compliance reports and walkthrough documentation. This project is located in Aliso Viejo, California, with a response deadline set for December 2, 2026.

POSTED

DEADLINE

Traffic Signal Infrastructure Design and PS&E PreparationThis subcontract opportunity involves providing professional engineering design services for regional signal synchronization projects within the City of Aliso Viejo, California. The selected contractor will support prime contractors by preparing comprehensive Plans, Specifications, and Estimates for traffic signal equipment and infrastructure improvements, while also developing technical responses and bid advertisements. A valid California Professional Engineer license is required to perform this work. The project culminates in the delivery of a complete PS&E package, with a response deadline set for December 2, 2026.

POSTED

DEADLINE

Traffic Data Collection and Field Study ServicesThis subcontract for Traffic Data Collection and Field Study Services supports prime contractors on regional signal synchronization projects for the City of Aliso Viejo. The scope of work involves comprehensive traffic analysis, including seven-day 24-hour machine counts, intersection turning movement counts, and floating car studies utilizing GPS and synchronized video analysis. All operations must be conducted within Caltrans right-of-way in strict accordance with 2026 CTFP Guidelines, with final deliverables consisting of field review memos and summarized count data provided in Excel format. The project is located in Aliso Viejo, California, under NAICS code 541330. Interested parties should note that the solicitation was posted on October 28, 2026, with a response deadline set for December 2, 2026.

POSTED

DEADLINE

Oso Parkway/Pacific Park Drive/Glenwood Drive Regional Traffic Signal Synchronization Project

Solicitation # 20261026016

The City of Aliso Viejo is soliciting proposals for a professional licensed consultant to provide regional traffic signal synchronization services for the Oso Parkway, Pacific Park Drive, and Glenwood Drive corridor. The project involves coordinating traffic signals across multiple jurisdictions, including the Cities of Aliso Viejo, Laguna Hills, Mission Viejo, Laguna Niguel, the County of Orange, and Caltrans, extending from Moulton Parkway to the SR-241 Northbound On-Ramp. The projected period of performance is from April 1, 2027, to September 30, 2030. The selected consultant will be responsible for providing all necessary labor, materials, and equipment to implement optimized signal timing in accordance with the Regional Traffic Signal Synchronization Master Plan and the City's Local Signal Synchronization Plan. Proposals are due by December 2, 2026, and must be submitted as one hard copy and one electronic PDF on a USB drive, with the cost proposal in a separate sealed envelope. Award decisions will be based on a weighted evaluation of the consultant's ability and skills, character and reputation, cost reasonableness, ability to meet time requirements, financial resources, and previous experience with the vendor. The contract is governed by the laws of the State of California with venue in Orange County. Key requirements include compliance with California prevailing wage laws, adherence to the City's Minority Business Enterprise program, and the submission of annual political contribution disclosures.

POSTED

DEADLINE

Landscape Architecture and Public Space DesignerThis subcontract opportunity is for a Landscape Architecture and Public Space Designer to provide planning and conceptual design services for public parks on Atlanta Regional Commission projects. The selected professional will be responsible for advancing central gathering place planning to 30 percent completion, with a specific focus on integrating stormwater management and tree canopy considerations. Additionally, the scope includes the development of comprehensive placemaking strategies encompassing lighting, landscaping, wayfinding, and public art. To be eligible for this role, the contractor must hold a Professional Landscape Architect license. The primary deliverables for the engagement are a 30 percent Park Design Plan and a formal placemaking strategy document. This project is issued by the Buckhead Community Improvement District in Georgia, with a response deadline of November 13, 2026.

Buckhead Community Improvement District

POSTED

DEADLINE

Multimodal Transportation & Mobility SpecialistThis subcontract for a Multimodal Transportation and Mobility Specialist involves analyzing and designing transportation improvements for prime contractors on Atlanta Regional Commission projects. The scope of work includes assessing roadways, transit stops, trails, and bicycle or pedestrian infrastructure to develop a prioritized list of local, state, and federal projects. Using GIS and Complete Streets design standards, the specialist will create a walkable streetscape focus area and grid prototype developed to 30 percent completion. The project is issued by the Buckhead Community Improvement District in Georgia under NAICS code 541330. The primary deliverables consist of a comprehensive transportation framework and the 30 percent design prototype. Interested parties should note the response deadline of November 13, 2026.

Buckhead Community Improvement District

POSTED

DEADLINE

Buckhead CID Livable Centers Initiative Master Plan

Solicitation # 2026-10

The Buckhead Community Improvement District is soliciting proposals for the Buckhead Livable Centers Initiative Master Plan, a project aimed at updating the 2017 LCI plan to improve accessibility, walkability, and transit use. The scope of work focuses on the Buckhead and Lenox MARTA station areas and their connected mixed-use districts. Key deliverables include an existing conditions assessment report, a regulatory code study and audit, and the advancement of both a central gathering place/park plan and a walkable streetscape prototype to 30 percent completion. The total budget for this project is 300,000 dollars, with payments made via monthly invoices and progress reports. The project is funded through the Atlanta Regional Commission’s Livable Centers Initiative program and must adhere to federal regulations 49 CFR Part 18 and 49 CFR Part 26 regarding competitive procurement and Disadvantaged Business Enterprise participation. Additionally, the contractor must comply with the Georgia Security and Immigration Compliance Act and the Clean Air Act Amendments of 1990. The performance period begins with a notice to proceed on December 21, 2026, with a project kickoff in January 2027 and a final completion deadline of November 19, 2027. Selection will be based on the consultant's qualifications, prior experience, proposed approach, and understanding of the local Buckhead context.

Buckhead Community Improvement District

POSTED

DEADLINE

Wastewater System Engineering ConsultantThe Wastewater System Engineering Consultant subcontract involves providing technical analysis and preliminary design services for prime contractors working on sewerage system projects for the City of Alamo. The selected consultant will be responsible for analyzing existing system capacity and conditions, developing design alternatives, and calculating flow rates in strict accordance with state environmental standards and Georgia Department of Community Affairs guidelines. Key technical requirements include the use of GIS mapping tools and hydraulic modeling software to produce design calculations, technical data, and draft sections of the Preliminary Engineering Report. Qualified candidates must hold a valid Georgia Professional Engineer license to perform this work. This opportunity was posted on October 28, 2026, with a response deadline of November 30, 2026. The project falls under NAICS code 541330 and is focused on ensuring the city's wastewater infrastructure meets all necessary regulatory and performance benchmarks.

POSTED

DEADLINE

CITY OF ALAMO FY27 CDBG SEWERAGE

Solicitation # PE-66394-NONST-2027-000000011

The City of Alamo is soliciting statements of qualifications and proposals from engineering firms licensed in the State of Georgia to provide professional services for the improvement of the city's sewerage system. The scope of work involves providing preliminary design services for a potential FY27 Community Development Block Grant (CDBG) project, with the requirement that a draft Preliminary Engineering Report be submitted by January 15, 2027. If funding is secured, the selected firm will also be responsible for the subsequent design and construction management services. Proposals are due by November 30, 2026, and must include the firm's history, CDBG/EIP/RDF experience, key personnel qualifications, current workload, proposed scope of service, references, and associated fees or percentages. Evaluation of respondents is based on a point system assessing the firm's ability to provide necessary disciplines, experience with similar projects, quality of references, and price competitiveness. Additionally, firms must confirm they possess Errors and Omissions insurance and can meet the PER deadline. All contracts are subject to the provisions of the Georgia Department of Community Affairs and must comply with various federal and state laws regarding HUD Assisted Projects, including the Build America, Buy America Act, the Americans with Disabilities Act, and the Civil Rights Act of 1964. The primary point of contact for this solicitation is Bethany Newby.

City of Alamo

POSTED

about 7 hours ago

DEADLINE

in about 1 month

AI Contract Overview

The California Department of Water Resources Division of Modeling Support Office is seeking qualified firms to submit a Statement of Qualification for the CalSim Model Development and Application project. The selected contractor will provide specialized engineering services to develop, enhance, and apply various CalSim modeling tools, including CalSim 3, CalLite, CalSimHydro, CS3RimInflow, and the CalSim 3 Historical Hydrology Model. This technical work is designed to support the simulation of Central Valley Project and State Water Project system operations, involving the improvement of the WRIMS simulation engine and the modeling of water use across agricultural, urban, and refuge sectors. Key responsibilities include simulating streamflow and surface runoff from rim watersheds and valley floor areas, as well as supporting the calibration and validation of CalSim 3 surface and groundwater hydrology. The estimated contract value for these services ranges from $1,000,000 to $10,000,000. Interested parties must submit their qualifications by the closing deadline of September 15, 2026, at 2:00 PM. All inquiries regarding the specific requirements and content of this solicitation should be directed to the designated contact at the Department of Water Resources.

General Info

California seeks engineering firms for CalSim model development services valued up to $10,000,000.

Agency

State of California

NAICS

541330 - Engineering Services

Place of Performance

CA, USA

Set-Aside

NONE

Documents

No documents available

Documents will appear here when they are available.

AI Contract Breakdown

Uniform Contract Format

No documents to break down

The breakdown needs solicitation documents. None were found from this contract's source.

Timeline

PhaseClosed

PostedAug 24

Solicitation

Response DeadlineSep 15

Deadline has passed

Submission Closed

09/15/2026, 09:00:00 PM UTC

Find active opportunities like this

Get full access to discover similar active contracts, track opportunities, and build proposals with AI assistance.

Organization & Contact Information

AgencyState of California

Contacts1 person available

OfficeN/A

Organization / AgencyState of California

Office AddressN/A

Contacts

Contracting Officer

contact@example.gov

Full Description

State of California CalSim Model Development and Application Tender # 10220250 Closing Date : 09/15/2026 at 14:00 PM Contact: Contact: James Tedeschi Phone: 916/803-6196 Email: contact@example.gov Details: The Department of Water Resources (DWR), Division of Modeling Support Office, invites qualified firms to submit a Statement of Qualification (SOQ). Contractor will provide engineering services to develop, enhance, and apply the CalSim modeling tools, including CalSim 3, CalLite, CalSimHydro, CS3RimInflow, and the CalSim 3 Historical Hydrology Model (CS3HIST), to support simulation of CVP and SWP system operations and their service areas. This work includes improving and applying the WRIMS simulation engine, modeling water use for agriculture, urban, and refuge needs, and simulating streamflow and surface runoff from rim watersheds and valley floor areas. Contractor will also support calibration and validation of CalSim 3 surface and groundwater hydrology. Estimated Contract Value: $1,000,000 - $10,000,000 Disclaimer: This bid is researched and provided for information purposes only. To participate in this bid opportunity, interested vendors are sometimes required to register on the State of California's website. Please refer to the originating organization for any information relating to this. Direct all queries pertaining to the language, the content or any missing or inaccurate information within this abstract to its originator, as indicated in the advertisement. Note: When you click on the link below, a new window will open to the site where you can locate more information regarding this bid. You may need to search the site to locate the bid. View Bid Information Biddingo.com is not responsible for the contents of the third party site and does not make any representations regarding the content or accuracy of materials on such third party web sites. If you decide to access them, you do so at your own risk.