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Hazardous Waste from Small Businesses

The Delta Household Hazardous Waste Collection Facility has reopened with special COVID-19 safety requirements. Please be aware of the following requirements before visiting the facility:

  • Face coverings are optional when dropping off waste at the facility, except when entering the Reuse Room where face coverings are required at all times.  Contra Costa County recommends face coverings for all unvaccinated individuals.
  • Customers must remain in the vehicle at all times when dropping off waste.
  • All waste must be placed in the trunk, rear truck bed, or rear compartment of a van or hatchback.  No waste will be removed from vehicle cabs.
  • Please have your driver’s license available for verification of residency in the service area. Facility staff are utilizing a new contactless reader to collect information.  Place the backside of your license against the driver’s side window to be scanned.

Businesses Eligible for Program

Non-profit groups, landlords, condo operators, small businesses, and any other organization or commercial entity that meets the following criteria:

  • Be located in, and generate the waste in, the Cities and communities of Antioch, Bay Point, Bethel Island, Brentwood, Discovery Bay, Knightsen, Oakley, and Pittsburg.
  • Qualify as Conditionally Exempt Small Quantity Generator (CESQG) as defined in the California Health and Safety Code, section 25218.1, and the Code of Federal Regulation, Title 40, section 261.5.
  • Your business must produce less than 220 lbs, or 27 gallons in total* of hazardous waste per month, per location., and less than 2.2 lbs of Extremely or Acutely Hazardous Waste per month, per location.
  • You must have less than 2200 lbs (about five (5) 55 gallon drums) of all kinds of hazardous waste in storage at any one time.
  • You must produce less than 110 lbs of perchloroethylene per month.

Wastes that are not to be included in these volume requirements are the recyclable wastes of used motor oil, latex paint, antifreeze, and lead acid batteries.  (State, County, District, and local hazardous materials regulating agencies reserve the right to visit your organization to verify your qualifications as a CESQG.)

How to Start
All participants in the CESQG program MUST HAVE an EPA identification number unless you are only bringing universal waste such as fluorescent bulbs, batteries, and electronic waste.

  • To apply for a permanent ID number, fill out Department of Toxic Substances Control Form 1358.
  • To apply for a temporary ID number, call the California Environmental Protection Agency (CAL-EPA) at 1.800.618.6942.
  • If your business already has an EPA ID Number, go to the next step.

Fill Out and Return the Proper Forms
The enclosed Small Business Program Waste Inventory and Self-Certification Form is a legal document attesting to the fact that your business meets the criteria of a Conditionally Exempt Small Quantity Generator. The inventory sheet will be used to schedule your appointment and determine your total disposal costs based on inventory of material you plan to bring to the facility.  A Material Safety Data Sheet (MSDS) may be requested for some wastes.

If you FAX your form in, you will need to bring the originals to your appointment.

The Appointment
After we have reviewed your certification form, DHHWCF personnel will schedule your business for an appointment and mail or fax back the information to the contact person listed on the form.  To request a cancellation or change the date or time of your appointment, please call 925.756.1990 and press 6.

What Can I Bring?
We accept most common consumer type building maintenance, painting, cleaning, gardening, and auto products, as well as pure chemicals used in business or laboratory applications.  The DHHWCF staff may request copies of MSDSs forms based on the inventory submitted.  If you have any questions, call 925.756.1990 and press 6.

What Can't I Bring?

  • Compressed gases (except propane)
  • Medical Waste
  • Explosives
  • Radioactive Material
  • Unknown or Unlabeled Industrial Chemicals
  • PCB Ballasts or other PCB wastes
  • Contaminated Soil or Debris from Clean up Sites

How Much Does it Cost?
Delta Diablo (District) has established unit rates for most waste streams (see the Fee Schedule). District staff will estimate the costs based on the Waste Inventory and Self-Certification Form submitted by the small business.  The cost estimate will be included on the form when the District gives you an appointment time.

How Much Can I Bring?
State law limits an employee of your business to transport up to 220 pounds (about 27 gallons of liquid of average weight) of hazardous waste, or up to 2.2 pounds of acutely hazardous waste.  No individual container may be over 5 gallons or 50 lbs in weight.

How to Package
Package all wastes in original containers if possible.  If you have a leaking container, place it in a larger container (such as a plastic bucket available from paint or hardware stores); small leaking containers can be placed individually inside double, ziploc bags.  Include an original label, MSDS, or a note with as much information as possible about the material (including the brand name and ingredients).  Do not mix different wastes in the same container.  We can only empty used motor oil and antifreeze containers "while you wait", so package all other wastes in containers that can be left for disposal. Remember, no individual container may be over 5 gallons or 50 lbs in weight.

How to Transport
Place the materials upright in your vehicle and brace them so they will not slip or tip over.  For safety, transport the materials in your vehicle's truck or truck bed, away from the passenger compartment. Remember, no individual container may be over 5 gallons or 50 lbs in weight, and a copy of the variance must accompany the waste at all times during the transport.

Upon Your Arrival
Upon arriving at the facility, pull up into the off-loading area, and turn off your vehicle.  We are a full-service operation and our staff will offload your waste; please stay in your vehicle at all times.  Your waste will be checked against your Waste Inventory and Self-Certification Form, signed-off by staff, and fees collected (check or money order only).  A copy of the Waste Inventory and Self-Certification Form will be provided for your records.  Please keep the form for a minimum of three years to document proper disposal of your hazardous waste.

Download the entire Small Business Program Packet here (includes Information and Instruction, Waste Inventory and Self-Certification Form, Fee Schedule, and DTSC Form 1358).

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