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Ecology for Businesses

Bidding Opportunities

The Department of Ecology uses many different types of goods and services to meet its mission.


  • Encourages wide participation by the business community in the opportunities it has available.
  • Uses state master contracts developed by DES wherever possible.
  • Publishes all goods and services bidding opportunities through the Department of Enterprise Services (DES) bid notification system called WEBS.

 Washington’s Electronic Business Solutions (WEBS)

Benefits of Registering in WEBS, and Reminders

Supplier Diversity

Ecology supports DES Business Diversity and Office of Minority and Women's Business Enterprises (OMWBE) efforts to increase procurement with the following business groups.

  • Minority-owned
  • Small
  • Veteran-owned
  • Women-owned

For Bidding Questions

  • See specific bidding documents in WEBS for contact information.
  • For general bidding questions, contact Mark Gaffney, Contracts and Purchasing Unit Manager, 360-407-7031.

Public Inspection

Ecology makes available the following recent list of procurement documents for Public Inspection:

  • Sole source contracts
  • Emergency contracts
  • Interlocal agreements

Legal Notices

Ecology may publish legal notices of bidding opportunities and sole source purchases in the following newspapers:

Statewide Vendors/
Statewide Payees

A-19-1A Invoice Voucher


Environmentally Preferable Purchasing (EPP)

Information Technology Contractor Guidelines