Hazardous Waste Disposal Services in Santa Clara, San Mateo, San Francisco, Alameda, Contra Costa, Marin, Napa, Sonoma, and Solano Counties

The California Department of Transportation (Caltrans) is requesting bids for hazardous waste disposal services across 38 maintenance facilities and specialty yards in Santa Clara, San Mateo, San Francisco, Alameda, Contra Costa, Marin, Napa, Sonoma, and Solano Counties, with bids due July 9, 2026 at 2:00 p.m. A 5% Small Business or Micro Business preference (capped at $50,000) and a 5% Disabled Veteran Business Enterprise incentive (capped at $100,000 combined with all incentives and preferences) apply to certified firms.

Bidders must hold a valid California Department of Motor Vehicles Motor Carrier Permit; a Class A General Engineering License with Hazardous Substance Removal Certification from the California Contractors State License Board; and hazardous materials certifications from the U.S. Department of Transportation, California Highway Patrol, Cal Recycle, the Department of Toxic Substances Control, and the EPA. These certifications are mandatory eligibility filters.

The scope encompasses bin rental, delivery, pickup, removal, transport, and final disposal or recycling of hazardous, biological, and environmentally regulated waste. Services include treated wood waste and tire bins at designated sites. The bid structure comprises 38 line items for disposal costs and 38 line items for monthly per-bin rental rates over the 36-month contract term. Services must be delivered during normal work hours (6:30 a.m. to 3:30 p.m., Monday through Friday) with four-hour emergency response availability. Bid rates must include labor, equipment, personal protective equipment, travel, incidentals, bin maintenance, disposal documentation, and manifest preparation. Subcontracting is permitted only for laboratory services.

The contract runs August 1, 2026 through July 31, 2029, with an anticipated award date of July 23, 2026. Written questions are due July 1, 2026 at 1:00 p.m. Bid opening occurs July 9, 2026 at 2:30 p.m.