Doing Business with Tri Delta Transit

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.

If you would like to submit information to Tri Delta Transit about your organization and be added to our vendor list, please download and complete the vendor form. If you prefer to have the vendor form mailed to you, please call 925-754-6622 and ask to speak with the DBE Liaison Officer or email

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.

Email/Text Alert Sign Up

Disadvantaged Business Enterprise (DBE) Program

Eastern Contra Costa Transit Authority (ECCTA), also known as Tri Delta Transit, has established a Disadvantaged Business Enterprise (DBE) program in accordance with regulations of the U.S. Department of Transportation (DOT), 49 Code of Federal Regulations (CFR) Part 26. As a recipient of Federal financial assistance from the DOT, ECCTA has signed an assurance that it will comply with 49 CFR Part 26. It is the policy of ECCTA to ensure that DBEs, as defined in 49 CFR Part 26, have an equal opportunity to receive and participate in DOT-assisted contracts.

DBE Goals

ECCTA proposes an overall goal for the participation of DBEs in contracting opportunities that are expected to receive federal financial assistance. Please send comments via email to or via mail to DBE Liaison Officer, 801 Wilbur Avenue, Antioch, CA 94509.

DBE and SBE Resources

  • Search for a certified DBE firm
    (Hosted by the California Department of Transportation, Office of Business & Economic Opportunity)

  • Apply for DBE certification under the Unified Certification Program (UCP) of California
    (Hosted by the California Department of Transportation, Office of Business & Economic Opportunity)

  • NorCal Procurement Technical Assistance Center (PTAC)

  • U.S. DOT Office of Small and Disadvantaged Business Utilization (OSDBU) 

  • U.S. Small Business Administration (SBA) 

  • Business Outreach Committee (BOC)- ECCTA (Tri Delta Transit) is a member of the BOC in the San Francisco Bay Area. The BOC is a consortium of twenty five San Francisco Bay Area Transit and Transportation Agencies that assist small, disadvantaged and local firms in doing business with Bay Area transportation agencies. The BOC offers training, technical assistance, and relationship-building with agency staff and the contracting community of the San Francisco Bay Area. BOC newsletters are published quarterly and networking events are held throughout the year. For more information on the BOC, email or call 925-754-6622 and ask to speak with the DBE Liaison Officer.

  • Business Outreach Committee Contracting Newsletters
  • Winter 2019

    Business Outreach/Events

  • 2019 NorCal Procurement Expo – May 31, 2019 (flyer)
  • Tri Delta Transit will be an exhibitor at the 2019 NorCal Procurement Expo on May 31, 2019 at the Roundhouse Conference Center, 2600 Camino Ramon, San Ramon, CA 94583. Small and diverse businesses will have the opportunity to connect with local, state, and federal agencies, prime contractors, and resource partners at this event. Stop by Tri Delta Transit’s table and introduce your business to Tri Delta Transit staff. Learn about Tri Delta Transit’s Disadvantaged Enterprise (DBE) Program and proposed triennial overall DBE goal for Federal Transit Administration (FTA)- assisted contracts for Federal Fiscal Year 2020-2022. Review the goal setting process and provide input on the proposed goal.

  • Business Outreach Committee Public Participation Meeting- April 2, 2019 (flyer)
  • Tri Delta Transit, a member of the Business Outreach Committee, participated in the Public Participation Meeting on April 2, 2019 in Oakland, CA.

    Legal Notices

    Invitation for Bids

    Please check this site again in the future, as all invitation for bids will be posted here.

    Email/Text Alert Sign Up

    Request for Proposals

    Please check this site again in the future, as all requests for proposals will be posted here.

    Email/Text Alert Sign Up

    Bus Stop Spec Sheet