Wayne Hsiao

Modular Wetland System and Detention Basin Maintenance Services

The contract pertains to the provision of maintenance services for a Modular Wetland System and Detention Basin, aimed at ensuring their proper function and sustainability. Issued by OC Public Works under the California state jurisdiction, this solicitation invites bids for a project designed to support environmental management efforts through infrastructure upkeep. The contract was publicly posted on December 17, 2025, with a response deadline set for January 6, 2026. The solicitation, identified as IFB 080-2950403-WH, is managed by the Deputy Purchasing Agent, Wayne Hsiao. The scope of the work is primarily focused on the state of California, with administrative operations based in Santa Ana. This opportunity is open without any set-aside restrictions and falls under the category of SLED (State, Local, and Education) organizations. Interested parties are directed to submit their proposals electronically via the designated procurement portal.

CaliforniaCA, USA

NAICS

562910

Remediation Services

Source portal

OpenGov

Posted Dec 17, 2025

IFB 080-2950403-WH

Closed

State & Local5

Construction Site Flagger Services

The County of Orange, through OC Public Works, is seeking competitive electronic bids from qualified vendors to provide Construction Site Flagger Services under solicitation number IFB 080-2925107-WH. The contract aims to secure professional flagging services for construction sites across California, with project values estimated between $500,000 and $2,000,000. Bidders must submit their proposals exclusively through the County’s online bidding platform by September 22, 2025, and are encouraged to review all solicitation instructions, including the model contract and related attachments, prior to submission. Questions regarding the solicitation are to be directed via the designated Q&A section by September 11, 2025, before 2:00 pm, with no direct contact permitted with other County personnel. The contract emphasizes adherence to applicable labor laws and regulations, aligning with the broader oversight efforts of the Orange County District Attorney’s Office Public Works Unit, which enforces fair bidding practices and wage protections for public projects. The scope of work involves providing trained flaggers to ensure safety and compliance at construction sites, with the County acting as the primary contracting authority. The procurement process is fully electronic, and interested vendors can access additional project details through the provided online portal link. The contract’s successful execution will support the County’s commitment to safe, compliant, and efficient public infrastructure development within California.

CaliforniaCA, USA$500K–$2M est.

NAICS

561990

All Other Support Services

Source portal

HigherGov

Posted Sep 8, 2025

IFB 080-2925107-WH

Closed

State & Local3

On-Call Hazardous Materials Testing Services

The County of Orange through OC Public Works is seeking proposals from qualified firms to provide On-Call Hazardous Materials Testing Services under solicitation number RFP 080-2753801-WH. The contract aims to secure professional services for hazardous materials testing on an as-needed basis, with project sizes ranging from a minimum of $500,000 to a maximum of $2,000,000. Interested respondents must meet the specified minimum qualifications outlined in the RFP and demonstrate their capability to perform the scope of work effectively. The procurement process was initiated on March 26, 2025, with a deadline for responses set for April 28, 2025. The contract will be administered within California, under the NAICS code 562211, which pertains to hazardous waste treatment and disposal services. The primary point of contact for inquiries is Wayne Hsiao, reachable via email at [email hidden]. Additional details and the solicitation documents can be accessed through the provided procurement portal link. This opportunity is part of the County’s ongoing efforts to ensure environmental safety and compliance through specialized hazardous materials testing services.

CaliforniaCA, USA$500K–$2M est.

NAICS

562211

Hazardous Waste Treatment and Disposal

Source portal

HigherGov

Posted Mar 26, 2025

RFP 080-2753801-WH

Closed

State & Local4

Overhead Door, Electronic Gate and Sliding/Swinging Door Maintenance and Repair Services

The County of Orange through OC Public Works is seeking competitive electronic bids from qualified vendors to provide maintenance and repair services for overhead doors, electronic gates, and sliding or swinging doors. The contract resulting from this solicitation will establish a formal agreement between the County and the selected contractor, adhering to specified model terms, conditions, and scope of work. The bidding process is exclusively electronic, requiring all submissions to be made through the County’s online bidding system, with no alternative submission methods accepted. Bidders are encouraged to thoroughly review all instructions, including the solicitation documents, attachments, and exhibits, prior to submitting their bids. The solicitation, identified as IFB 080-2756001-WH, was posted on January 29, 2025, with a response deadline of February 19, 2025. The contract is valued between $500,000 and $1,500,000 and falls under the NAICS code 238290, which pertains to other building equipment contractors. The services will be performed within California, and the primary point of contact for inquiries is Wayne Hsiao, accessible via email or phone. Interested vendors can find additional details and access the bidding portal through the provided online link.

CaliforniaCA, USA$500K–$1.5M est.

NAICS

238290

Other Building Equipment Contractors

Source portal

HigherGov

Posted Jan 29, 2025

IFB 080-2756001-WH

Closed

State & Local2

Trash and Debris Capture Devices

The County of Orange through OC Public Works is seeking proposals from qualified firms to supply Trash and Debris Capture Devices, with the goal of enhancing water quality and environmental management. The solicitation, identified as RFP 080-2736403-WH, was posted on January 22, 2025, with a deadline for responses set for February 18, 2025. Interested respondents must meet the specified minimum qualifications and demonstrate the capability to deliver the services outlined in the Scope of Work, which involves providing devices designed to capture trash and debris effectively. The contract is anticipated to be valued between $500,000 and $2,000,000, reflecting a significant investment in infrastructure to support environmental sustainability efforts within California. The primary point of contact for inquiries is Wayne Hsiao, accessible via email at [email hidden]. Additional details and the project portal can be accessed through the provided online link.

CaliforniaCA, USA$500K–$2M est.

NAICS

333998

All Other Miscellaneous General Purpose Machinery Manufacturing

Source portal

HigherGov

Posted Jan 22, 2025

RFP 080-2736403-WH

Closed

State & Local3

Emergency Management Plans and Related Services

The County of Orange through OC Public Works is seeking proposals from qualified firms to develop and implement Emergency Management Plans and provide related services. The contract, identified as RFP 080-2712602-JA-2, aims to secure professional expertise capable of fulfilling the scope outlined in the RFP, which includes comprehensive emergency preparedness, response, and recovery planning. Interested firms must meet the specified minimum qualifications and carefully review the detailed solicitation package, including instructions for proposal submission, to ensure compliance with the requirements. The project has a budget range between $500,000 and $2,000,000, reflecting the scope and scale of the emergency management services sought. Proposals are due by November 25, 2024, and should be submitted following the guidelines provided in the RFP. The primary point of contact for inquiries is Wayne Hsiao, whose contact details are included in the solicitation. The contract will be executed within California, with the services expected to be performed in the region. Respondents are encouraged to review the full solicitation through the provided online portal for comprehensive details on the scope of work, response requirements, and submission procedures.

CaliforniaCA, USA$500K–$2M est.

NAICS

624230

Emergency and Other Relief Services

Source portal

HigherGov

Posted Nov 4, 2024

RFP 080-2712602-JA-2

Closed

State & Local4

Hvac Equipment And Duct Cleaning Services

The County of Orange through OC Public Works is seeking competitive electronic bids from qualified vendors to provide HVAC equipment and duct cleaning services. The contract resulting from this solicitation will be governed by standard contractual terms, conditions, and scope of work outlined in the model agreement. Bidders must possess a valid California Contractors State License (C-20 or C61/D-64) and submit proof of licensing with their bid. Additionally, they are required to be registered with the Department of Industrial Relations and comply with prevailing wage laws for all work performed on County property. The procurement process is entirely electronic, with all questions and communications to be handled through the County’s online bidding platform, OpenGov, and bidders are responsible for monitoring any updates or addenda. The contract size is estimated to be between 500,000 and 2 million dollars, with the project located within California, and the response deadline is October 28, 2024. The project aims to ensure high standards of service for HVAC and duct cleaning, supporting the County’s public works and infrastructure maintenance efforts.

CaliforniaCA, USA$500K–$2M est.

NAICS

561790

Other Services to Buildings and Dwellings

Source portal

HigherGov

Posted Oct 7, 2024

IFB 080-2684802-WH

Closed

State & Local3

Street Sweeping Services

The County of Orange through OC Public Works is seeking competitive electronic bids from qualified vendors to provide street sweeping services under solicitation number IFB 080-2713401-WH. The contract resulting from this process will establish a formal agreement between the County and the selected contractor, adhering to specified model terms, conditions, and scope of work. The project has a contract value estimated between $500,000 and $2,000,000, with performance to be carried out within California. Bidders must submit their proposals exclusively through the County’s online bidding system by the deadline of October 10, 2024, and are encouraged to review all solicitation instructions, attachments, and the model contract carefully before submission. The scope of work involves comprehensive street sweeping services required by OC Public Works, with the primary point of contact being Wayne Hsiao, whose contact details are provided for any inquiries. The solicitation emphasizes the importance of electronic submission and adherence to the outlined procedures, ensuring a transparent and competitive bidding process. Interested vendors can access additional project details and the bidding portal through the provided online link.

CaliforniaCA, USA$500K–$2M est.

NAICS

488490

Other Support Activities for Road Transportation

Source portal

HigherGov

Posted Sep 26, 2024

IFB 080-2713401-WH

Closed

State & Local5

Construction Manager At Risk (CMAR) For Urea Conversion Project

Orange County is seeking proposals from qualified contractors to serve as Construction Manager at Risk (CMAR) for the UREA Conversion Project located at 525 North Flower Street, Santa Ana, California. The project involves providing pre-construction and construction management services with negotiated Guaranteed Maximum Prices (GMPs) for each phase. The County has completed approximately 60% of the construction documents, and the estimated project budget is around $1.6 million. The scope includes managing the project from early planning through construction, ensuring cost control within the GMPs, and coordinating various project elements to meet the County’s objectives. The solicitation, identified as RFP 080-2659603-WH, was posted on July 31, 2024, with a response deadline of September 13, 2024. The contract size is expected to range between $1,440,000 and $1,760,000. Proposals will be evaluated based on a cost scoring formula that considers the budget cost multiplied by the total construction percentage, emphasizing cost efficiency and project management capabilities. Interested parties can contact Wayne Hsiao via email for further details and access the full RFP package through the provided procurement portal link.

CaliforniaCA, USA$1.4M–$1.8M est.

NAICS

333924

Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing

Source portal

HigherGov

Posted Jul 31, 2024

RFP 080-2659603-WH

Closed

State & Local4

Two (2) 8 Passenger Vans

This solicitation from OC Public Works is a fully electronic bid process for the one-time purchase of two 8-passenger vans, with a contract value estimated between $60,000 and $100,000. Bidders must register via the OpenGov procurement platform before accessing the detailed documents and submitting their bids. The process requires careful review of the county’s terms and conditions, insurance requirements, scope of work, and payment details outlined in attached documents. Bidders are mandated to complete and submit various certification and reference forms, including vehicle specifications, to ensure responsiveness. The bid price must encompass all associated costs, such as fees, shipping, and assembly, as no additional compensation will be provided. The contract emphasizes compliance with prevailing wage laws for work performed on county property, and all questions related to the bid must be submitted through the OpenGov platform by May 24, 2024, with bids due by May 31, 2024. The county promotes local small business and disabled veteran business enterprise preferences, encouraging eligible vendors to participate according to the outlined policies. Upon award, the successful contractor will need to sign a formal contract and provide proof of insurance within seven days. The procurement process is managed by Wayne Hsiao, with contact details provided for further inquiries. The overarching goal is to ensure a transparent, fair, and compliant purchasing process aligned with county policies and legal requirements.

CaliforniaCA, USA$60K–$100K est.

NAICS

333924

Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing

Source portal

HigherGov

Posted May 20, 2024

IFB 080-2655201-WH

Closed