What Counts as Cannabis Waste Management Under Missouri Law
Managing cannabis waste in Missouri comes with set requirements at every step. Regulations outline how waste must be evaluated, rendered, stored, and documented throughout this process. For licensed operators, understanding what qualifies as cannabis waste management is necessary for keeping operations on track and avoiding costly missteps.
Classifying Cannabis Waste
Every licensee is responsible for complying with 40 CFR 262.11 to determine whether their waste is hazardous or non-hazardous. Cannabis plant material, such as stalks, flowers, trim, leaves, stems, extracts, and spent solvents, may be hazardous if treated or contaminated with a hazardous waste constituent.
Rendering Cannabis Waste Unusable
Before leaving a licensed facility, cannabis waste must be rendered unusable.
Non-Hazardous Waste
Regulations require non-hazardous waste to be ground and mixed with at least 50% non-cannabis material, such as pine chips, cardboard, or paper, by volume. Pine chips are often preferred because they help control odors and reduce the risk of attracting pests.
Other methods to render it unusable must be approved in writing by the Department of Health and Senior Services (DHSS) before implementation. Once rendered unusable, it may be disposed of at a permitted solid waste facility for final disposition. Other final disposition locations must be approved in writing by the department before implementation.
Hazardous Waste
Plant waste treated with solvents such as butane, propane, and ethanol must be off-gassed in a C1D1 room before being rendered unusable. It can take 24 hours, up to 48 hours, or longer.
Cannabis businesses in Missouri need to use an LEL (Lower Explosive Limit) meter to check vapor levels. They must comply with hazardous waste regulations for waste storage, transportation, and disposal methods set by the Environmental Protection Agency (EPA) and the Missouri Department of Natural Resources (MO DNR).
Hemp Waste
Hemp waste is worth a mention. Technically, hemp is a cultivar of the Cannabis sativa plant, but federal law doesn’t consider it a controlled substance. Marijuana is cannabis with more than 0.3% THC, while hemp contains 0.3% THC or less.
The disposal of hemp waste is different. In 2019, the Missouri Department of Agriculture (MDA) launched an industrial hemp program. On December 31, 2022, the state-run program was discontinued. All licensing and regulation in Missouri was transferred to the U.S. Department of Agriculture (USDA) under the Domestic Hemp Production Program.
Storing Cannabis Waste Before Pickup
Cannabis waste must be stored in locked, tamper-resistant receptacles, either in a limited-access indoor space or in a locked, covered area outside. State law also requires that storage areas be monitored at all times from at least two camera angles.
Keeping Detailed Records
Licensees must keep records of the final disposition of all such wastes for at least five years or longer if required by federal, state, or local law.
In a marijuana waste disposal log, licensees must indicate the date and time, location, video camera names that captured the two angles of destruction, method of destruction, mixing medium, and agent IDs of the employees who destroyed the marijuana product.
Wastewater generated during marijuana product production and processing must be disposed of in compliance with applicable state, tribal, local, and municipal laws and regulations.
Leverage Monarch’s Compliant Solutions
Cannabis operators in Missouri must follow strict regulations, and even small oversights in waste handling can result in costly violations. Monarch Waste Co. delivers solutions that safeguard facilities, protect staff, and streamline operations while remaining compliant. Our team members:
Provide clean waste barrels before inspections and replace damaged receptacles on the day of pickup.
Render all collected waste on-site and record it in the marijuana waste disposal log.
Deliver the rendered waste for final disposal to one of our composting, disposal, or recycling partners for processing.
Carry valid agent IDs issued by the DHSS, demonstrating they are qualified and authorized to work in cannabis facilities.
Offer guidance on waste separation, odor control, off-gassing protocols, and recordkeeping, along with audit support to keep facilities inspection-ready.
To set up services that keep your facility running smoothly, contact us today!