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Procurement

Tri Delta Transit is always interested in forging new partnerships with businesses to help provide better public transportation services to the residents of Eastern Contra Costa County.

The following is a partial list of commodities purchased by Tri Delta Transit through informal purchase:

  • Shop supplies (nuts, bolts, wire,wire connectors, tape, batteries, light bulbs, zip ties)
  • Personal protection gear (gloves, dust masks, safety glasses, safety vests, ear plugs)
  • Bus stop repair supplies (poles, brackets, signs, concrete, plexiglass, trash cans)
  • Bus parts (brake parts, coolant, oil, parts cleaner)
  • Janitorial supplies (toilet paper, paper towels, hand soap, garbage bags, air fresheners)
  • Detail supplies (soap for bus wash, vandalism remover, glass cleaner, brooms, brushes, mops)
  • Bus fuel (diesel, unleaded, renewable diesel)
  • Office supplies (pens, printer paper, etc)
  • Food catering
  • Gifts/promotional items

The following is a partial list of typical recurring formal bids:

  • Uniforms
  • Advertising
  • Schedule printing
  • HVAC maintenance
  • Shop equipment maintenance
  • Operations
  • Financial auditor

ECCTA allows for bid/proposal submission through BidExpress. Vendors must register with BidExpress before participating at www.bidexpress.com. Registration for ECCTA solicitations is free.

We also encourage businesses to sign up for our free Email/Text Alerts to receive notification of upcoming Invitation for Bids and Request for Proposals.

Vendor Form

Email/Text Alert Sign-Up

How to submit a bid/proposal

Each formal solicitation package includes the due date, time, and any additional information for your submittal, including the date and time bids will be publicly opened, if applicable. Formal bids are generally opened publicly at Tri Delta Transit’s administrative office, 801 Wilbur Avenue, Antioch, CA 94509. Staff announces the names of firms and the submitted bids.

If no bids/proposals are listed, then there are none open at this time.

Current open bid/proposals

IFB for Charging Station Removal/Replacement

Deadline: January 12, 2026 untill 4:00 pm

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Eastern Contra Costa Transit Authority (ECCTA), a Joint Powers Agency (JPA) located in eastern Contra Costa County, California, is accepting sealed bids for the removal and disposal of four old electric vehicle (EV) chargers and installation of three new EV chargers. This project shall include the furnishing of all labor, equipment, materials, testing, tools, training, and other services as required by the Scope of Work section and other contract documents.


Pre-Bid Conference
A pre-bid conference will be followed by a site tour at 10:00 a.m. local time, on Wednesday, December 17, 2025 in the ECCTA boardroom located at the address below. A site tour will be conducted after the meeting. All prospective bidders and subcontractors are encouraged to attend. The purpose of the site tour is to acquaint the bidders with any and all conditions at the work site.

Deadline for Receipt of Bids
Sealed bids will be received by Eastern Contra Costa Transit Authority (ECCTA) until 4:00 p.m. local time, on Monday, January 12, 2025. Bids may be submitted either electronically via Bid Express or via hardcopy mailed to ECCTA’s facility located at 801 Wilbur Avenue, Antioch, CA 94509. Bids received after the said time or at any other place other than the time and place stated in this IFB will not be considered. Bids must be received on the enclosed ECCTA bid form with the required certification forms listed in the bid documents. Bids submitted on any other forms will be considered non-responsive and will be rejected

download this documentCharging_Stations_Replacement_2025-04 download this documentProject_Plan_Documents Power Block download this documentProject_Plan_Documents Power Block Data sheet Express Plus download this documentProject_Plan_Documents Power Block Site design download this documentProject_Plan_Documents Installation

BID Due Date: January 12, 2026 4:00 pm