4.3 Storage, Transport, and Disposal Regulations

Storage, Transport, and Disposal Regulations

Quick Answer: Under 333 CMR, pesticide 'use' includes storage, transport, and disposal. Storage facilities must be locked, ventilated, dry, and reported annually to the local fire department. Transportation requires securing containers in a separate cargo compartment and carrying a spill kit. Disposal requires triple rinsing and puncturing empty containers.

Under the Massachusetts Pesticide Control Act (M.G.L. c. 132B) and the regulations of 333 CMR, the term 'use' is defined broadly to include the storage, transport, and disposal of pesticides. Therefore, improper storage or handling is not just a safety hazard; it is a regulatory violation. Safe management throughout the product lifecycle protects human health, prevents environmental contamination, and preserves chemical effectiveness.

Massachusetts Safe Storage Regulations

Pesticides must be stored in a dedicated, locked facility or room that is completely secure from unauthorized entry, children, and animals. The storage area must be dry, cool, and well-ventilated. Liquid pesticide formulations should be protected from freezing temperatures, which can crack containers or cause the active ingredient to precipitate out of solution, rendering it ineffective or difficult to mix.

Key storage requirements and best practices include:

• Original Containers: All pesticides must be stored in their original containers with the original, legible label intact. Transferring pesticides to food or beverage containers is strictly prohibited.
• Separation: Store pesticides away from food, animal feed, drinking water, seed, fertilizers, and personal protective equipment (PPE). Storing PPE in the same room as pesticides can contaminate the safety gear with airborne residues.
• Shelving: Use non-porous shelving materials, such as metal or heavy-duty plastic. Wood shelves should be avoided because they absorb liquid spills and become a permanent source of contamination. Store dry formulations on shelves above liquid formulations to prevent liquids from leaking onto dry bags.
• Signage: Clear warning signs must be posted at all entrances to the storage area. Signs should read: 'Pesticide Storage Area - Keep Out' or similar wording. Additionally, posting a National Fire Protection Association (NFPA) 704 hazard rating placard is recommended to alert emergency responders.
• Fire Department Notification: A major Massachusetts-specific requirement is that any applicator or business storing pesticides must notify the local fire department annually in writing. This notification must include the exact location of the storage area, a current inventory of the products stored, copies of the Safety Data Sheets (SDS) for those products, and the names and phone numbers of emergency contacts.
• Secondary Containment: Large-scale storage of bulk liquid pesticides (typically containers or tanks holding more than 55 gallons) requires a secondary containment system. This system usually consists of a liquid-tight concrete dike or basin designed to hold 110% of the volume of the largest stored tank, plus the volume occupied by any other tanks or equipment within the containment area, protecting the surrounding soil and water from massive leaks.

Pesticide Transportation

Transporting pesticides carries a high risk of accidental spills and exposure. Applicators must prepare their vehicles and secure their loads to mitigate these risks.

The most important transportation rule is that pesticides must never be carried inside the passenger compartment of a vehicle. Fumes can build up in enclosed spaces, exposing the driver and passengers, and a spill could cause severe injury. Pesticides must be secured in a truck bed, the cargo area of a van, or in a locked utility box.

Additional transport safety measures include:

• Securing the Load: Containers must be blocked, braces, or tied down to prevent them from shifting, sliding, rolling, or tipping over during transit.
• Vehicle Security: If the vehicle contains pesticides, it must be locked whenever it is left unattended. Unlocked vehicles present an unacceptable risk of theft or vandalism.
• Required On-Board Equipment: Every vehicle transporting pesticides should carry a binder containing the labels and SDS for all products on board, an emergency first aid kit, a working ABC-rated fire extinguisher, and a dedicated spill cleanup kit.
• Spill Kit Elements: The spill kit must contain personal protective equipment (nitrile gloves, safety goggles, and respirator), absorbent materials (such as bentonite clay, cat litter, or absorbent pillows), a broom, a dustpan, a shovel, and heavy-duty plastic garbage bags or a sealable recovery drum.

For commercial operations carrying large quantities of hazardous materials, federal Department of Transportation (DOT) regulations apply. These can include requirements for shipping papers, vehicle placarding, and a Commercial Driver's License (CDL) with a hazardous materials (HazMat) endorsement.

Disposal and Triple Rinsing

Pesticide waste—including empty containers, unused mixtures, and rinsates—must be disposed of in accordance with state and federal laws. Improper disposal can lead to severe groundwater contamination and heavy fines.

Empty pesticide containers are not considered hazardous waste only if they have been properly rinsed. The standard legal method is the triple-rinsing procedure:

1. Drain: Empty the pesticide container into the spray tank, allowing it to drain for at least 10 seconds after the flow decreases to a drip.
2. Fill: Fill the container approximately 1/4 full with clean water (or the carrier designated on the label).
3. Agitate: Replace the cap securely and shake, roll, or rotate the container vigorously for at least 30 seconds to rinse all interior surfaces.
4. Pour: Pour the rinsate from the container into the spray tank. Allow the container to drain for another 10 seconds.
5. Repeat: Repeat steps 2 through 4 two more times, for a total of three rinses.
6. Puncture: Puncture the bottom and sides of the container with a sharp tool, and crush it if possible. Puncturing is required to prevent the container from being reused for water, food, or other purposes.

Alternatively, some applicators use pressure-rinsing nozzles, which use a high-pressure stream of water to rinse the container interior while draining directly into the spray tank. This is equivalent to triple rinsing when performed according to label instructions.

Once triple-rinsed, plastic pesticide containers can be recycled through MDAR-sponsored agricultural container recycling programs. If recycling is unavailable, they can be disposed of in a sanitary landfill approved by the Massachusetts Department of Environmental Protection (MassDEP). Unused, concentrated pesticides must be treated as hazardous waste and disposed of through licensed hazardous waste haulers.