Short answer: the standard general liability form carries a pollution exclusion, and the definition of "pollutants" behind it is broad enough to reach herbicide applied to a restoration site, smoke from a prescribed burn and fuel spilled from field equipment. Conservation organizations that spray, burn or run equipment on their preserves generally need something added — an endorsement writing part of the exclusion back, or a separate pollution form — and the usual write-back carries a condition that is easy to miss.
This is not a technicality for land trusts and watershed groups. Invasive species control is the work. If the policy that answers for a trail injury steps aside on the herbicide program, the organization has insured its second-largest exposure and not its first.
What the exclusion actually says
The pollution exclusion sits in Coverage A of the standard commercial general liability form as Exclusion f. It removes bodily injury and property damage liability arising out of the actual, alleged or threatened discharge, dispersal, seepage, migration, release or escape of "pollutants."
The real work is done by the definition. "Pollutants" means any solid, liquid, gaseous or thermal irritant or contaminant, including smoke, vapor, soot, fumes, acids, alkalis, chemicals and waste. Read literally that is an enormous net, and courts have argued for decades over how far it stretches — one line of cases confining it to what most people picture as environmental pollution, another applying it to any irritant that escapes. The uncertainty is itself the problem: an argument over whether the exclusion applies is one the organization funds while it runs.
Why restoration work lands in the hardest branch
Exclusion f. is written in branches, and one fits this class uncomfortably well. Subparagraph (1)(d) reaches pollutants at or from a site where the insured, or contractors working on its behalf, are performing operations — where the pollutants were brought to that site in connection with those operations. That describes a stewardship crew arriving at a preserve with a tank of herbicide almost exactly.
Compare what the same policy handles comfortably: a visitor who trips on a boardwalk. That is an ordinary premises claim, and general liability is the line designed to address them, subject to the form, its exclusions and its limits. The distinction is not severity. It is whether a substance you brought to the land is part of the allegation.
The write-back that depends on staying licensed
There is a standard endorsement built for this, and it is the thing to look for on a declarations page. CG 22 64, "Pesticide Or Herbicide Applicator — Limited Pollution Coverage," turns off subparagraph (1)(d) for the described operations.
But read how it does it. That branch of the exclusion does not apply if the operations meet all standards of any statute, ordinance, regulation or license requirement of any federal, state or local government applying to those operations.
The condition is the whole story. The write-back is tied to compliance, which makes the licensing file and the insurance file the same file:
- Whether whoever pulls the trigger holds a current applicator license for that category of work.
- Whether volunteers and seasonal crew apply under the supervision the license actually contemplates, not the supervision everyone assumes.
- Whether the product is used consistent with its label, since label directions carry regulatory force.
- Whether records prove all of that for the application later in dispute.
A land trust with a lapsed certification is not only out of compliance. It may have quietly disabled the condition its coverage was resting on.
Burns, fuel and the rest of the field
Herbicide is the obvious case, but "irritant or contaminant" reaches past the chemical shed.
Prescribed burn smoke. Smoke is named in the definition. Some policies carry a total pollution exclusion, and some versions — CG 21 55 by name — restore coverage for heat, smoke or fumes from a hostile fire, meaning a fire that becomes uncontrollable or breaks out from where it was intended to be. Whether an escaped prescribed burn fits that has been litigated and is fact-specific. If you burn, raise it as its own line item.
Fuel and equipment. A UTV leaking into a creek, a fuel can tipping in a truck bed, a chainsaw refueled beside a wetland.
Crews on the road. Volunteers driving between preserves in personal vehicles create an exposure the business policy does not fully address on its own. Hired and non-owned auto liability is written for that pattern.
Where organizations get caught
The pattern is rarely a group that declined coverage. It is a group whose fieldwork outgrew the application it filled out. A watershed group adds a planting program, then the herbicide work that keeps the plantings alive. A trail organization buys its first brush cutter. The policy was accurate when issued and stopped matching the operation without anyone deciding it should.
The related trap involves volunteers. Volunteer status does not automatically establish workers’ compensation eligibility. State law and coverage elections control, so workers' compensation generally does not respond to a volunteer hurt on a work day — a distinction covered further in our nonprofit workers' compensation guide. Some states let an organization elect to bring volunteers in; many instead buy volunteer accident coverage, which pays medical expense without a finding of fault. Either way it is a decision someone has to make on purpose, and not making it is the gap we see most here.
What to check on your own policy
- Find the endorsement schedule. Look for anything titled with "pollution," "pesticide," "herbicide" or "applicator," and note whether it is an exclusion or a write-back. They look alike in a list and do opposite things.
- If a write-back is there, read its condition. Then confirm your certifications are current for the work you do now, not the work you did at binding.
- List every substance you bring onto the land. Herbicide, fertilizer, fuel, treated lumber, imported fill. That list, not your acreage, drives the conversation.
- Flag prescribed burns separately, including whether a contractor does the burning.
- Check that remote assets are scheduled. Kiosks, gates, boardwalks and equipment at distant preserves go missing from the commercial property schedule because nobody visits them at renewal.
How this fits the rest of the program
Pollution is the piece that behaves unusually here; the rest looks like a nonprofit program. Board decisions on land transactions, easement enforcement and advocacy are a directors and officers question, where defense cost is usually the real number — see why D&O matters for nonprofit boards. For how the whole program assembles, see our environmental and conservation nonprofit page and the nonprofit insurance checklist.
Frequently Asked Questions
Does our general liability policy cover herbicide application? Not on the base form, as a rule. It carries a pollution exclusion written broadly enough to reach chemical application, so groups doing this work typically add a write-back endorsement or a separate pollution form.
We only spray a few days a year. Does this still matter? Frequency is not the variable. The exclusion is written around what happens, not how often. One overspray onto adjacent property raises the same question as a full-season program.
Are our volunteer crews covered if someone is hurt clearing brush? Workers' compensation generally does not respond, because volunteers are not employees. Volunteer accident coverage is a separate product paying medical expense without regard to fault, and some states let an organization elect to cover volunteers.
What is the difference between a pollution endorsement and a pollution policy? An endorsement modifies the liability policy you already hold, narrowly and for described operations. A standalone pollution form is its own policy, with its own limits, definitions and broader reach, including cleanup costs.
Does hiring a licensed contractor to spray solve it? It moves part of the exposure without removing you from the claim. You will still want a certificate, the right contract language, and confirmation that the contractor's pollution coverage is real rather than assumed.
Have the schedule read before the next work day
If you would rather have someone read the declarations page with you, we will — the endorsement schedule, whether a pollution write-back is present, what condition it carries, and whether the fieldwork you run today matches the operations the policy was written around. Request a review or get in touch.
General information, not legal or insurance advice. Coverage, endorsements, exclusions and limits vary by carrier and by policy, and whether any particular claim is covered depends on the policy language and the facts.