Small Quantity Generators (SQG)

Requirements for small quantity generators of hazardous waste.

A generator that produces less than 220 pounds of hazardous waste or less than 2.2 pounds of acutely hazardous waste in any calendar month is considered a Small Quantity Generator (SQG) and is required to participate in the Small Quantity Generator Self-Certification Program. The primary purpose of this education and compliance program is to improve environmental protection by requiring each SQG to review its hazardous waste management procedures, conduct a self-inspection of its facility and certify compliance to NHDES every three years. Program requirements include submittal of a fee of $270 at the time of certification ($90 each year for the three-year certification period).

The SQG Self Certification program was established because It was found that many SQGs weren’t aware of the hazardous waste rules that applied to them and performed very poorly in compliance inspections. This is a concern, because of the large number of SQGs in the state (approximately 2,000) and the fact that many are located within drinking water protection areas where their waste could be a potential contamination source if not managed correctly. Historically, approximately one third of all hazardous waste contaminated sites in New Hampshire were the result of mismanaged waste generated by SQGs. It is this program’s goal to provide businesses with the opportunity to become compliant prior to an inspection or site contamination, and is intended as an effective way to educate them and improve compliance and environmental stewardship with the least possible burden placed on them.

While the main benefit of the program is the education obtained through the self-inspection checklist, NHDES also provides outreach and training to assist SQGs in complying with hazardous waste management and certification requirements. Other benefits include making the workplace safer for employees and lessening future liability by reducing or eliminating hazardous waste generation, identifying ways to save money by reviewing current waste management practices, and improved communication and relationships between regulators and businesses.

For further information, refer to the following documents:


A Hazardous Waste Assistance Hotline is available for the regulated community and the public to ask questions concerning the New Hampshire Hazardous Waste Rules and compliance issues that affect hazardous waste management programs. The helpline is available Monday through Friday, 8:00 AM to 4:00 PM toll free at 1-866-HAZWAST (1-866-429-9278 in-state only) or at (603) 271-2942.

SQG Self-Certification Manager