Inside the Fight for Safe Cannabis for All

Jul 2, 2019    14 min read

Tainted grow operations are growing, but an unlikely group is doing whatever they can to stop it

Four members of the National Guard’s elite 95th Weapons of Mass Destruction Civil Support Team (WMD-CST) are stopped in a clearing deep in northern California’s Shasta-Trinity National Forest. They’re huddled together, decked in camouflage protective gear, chemically-resistant Butyl Rubber gloves and full-face respirators.

The team, who is usually tasked with addressing more traditional biological chemicals (think Sarin) just finished a hike up to an illegal cannabis grow operation dubbed Plummer for its close proximity to Plummer Peak. It is one of dozens in the area, believed to be established by cartels. But the crew—led by Drs. Mourad Gabriel and Greta Wengert of the Integral Ecology Research Center (IERC) and trailed by law enforcement—isn’t here because of the federally-banned mind-altering substance. Instead, at the center of their huddle is a vial of the fuschia-hued manmade pesticide Carbofuran.

“What they have in that vial could kill all of us,” Gabriel nods at the cholinesterase inhibitor, which attacks both the peripheral and central nervous systems. “A quarter of a teaspoon at 38 percent [concentration] is enough to kill a 600-pound lion. What they’re working with right now is about a tablespoon.” Nine one-liter bottles were discovered at Plummer; that’s a total of over 608 tablespoons of the hazardous nerve agent—which is sadly unsurprising given that the use of Carbofuran and similarly toxic pesticides has increased dramatically over the past several years. In 2012, the IERC ecologists detected Carbofuran at 15 percent of the trespass grows they visited. In 2018, that number was closer to 85 percent.

In large quantities, like what is measured at illegal grows, First Sergeant Justin Flood describes Carbofuran as “something that acts like a chemical weapon.” And then there is the environmental damage, which is what Wengert and Gabriel are here to measure; to take soil and water samples to determine the level of contamination. They will ultimately come to discover that they will need at least 15 people, trained in handling hazardous materials, for a span of 6-8 hours to reclaim the land.

Still, even though there is no legal use in the United States (Canada and the European Union have banned it outright), one manufacturer of Carbofuran is FMC Corporation in Pennsylvania. From FMC’s labs, it makes its way to willing countries and is then brought into California via the cartel’s foot soldiers, who camp in the forest for months at a time. Over a successful season, a trespass grow can yield thousands of pounds of cannabis with little knowledge of exactly how small traces of Carbofuran will affect consumers—although the Environmental Protection Agency has stated that no amount of Carbofuran is safe for consumers. “What they have there, that would be used for, like, a 100 gallon sprayer,” Gabriel gestures again to the tablespoon in the vial, this time talking to Wengert. “The whole bottle could be used for up to 3,000 gallons of water. We found nine of those bottles.”

“Why would you ever need that much?” Wengert muses.

A quarter of a teaspoon at 38 percent [concentration] is enough to kill a 600-pound lion. What they’re working with right now is about a tablespoon.

“To screw with these guys,” Gabriel says, gesturing to the law enforcement officers from the United States Forest Service, National Guard and local Trinity County Sheriff’s office.

It’s worked. In August of 2018, six members of an eradication team required hospitalization after Carbofuran exposure at a trespass grow in El Dorado National Forest. In one case, a Forest Service official went temporarily blind from the exposure and it’s unclear whether his sight will ever fully return. “I don’t think he was even cutting plants,” Wengert remembers of the incident. Because growers spray Carbofuran on marijuana plants as well as stir it into irrigation sources, handling plants is one of the easiest ways to become exposed. “He was bagging up trash at the site and…we don’t really know what happened,” she purses her lips. “He could have been doing everything right, that’s what’s so troubling.”

The incident resulted in the Forest Service being slapped with OSHA violations and, consequently, they’re reluctant to speak publicly about the dangers of their work. USFS denied requests for comment from Playboy.

While the 95th is seeing Carbofuran for the first time, Gabriel’s relationship with the pesticide began in 2009. He was tracking a threatened Pacific fisher (a kind of weasel that was being considered for endangered species listing) when he discovered a fisher carcass. When fishers die naturally in the wild, it’s typically from illness or injury, and evidence of either would be apparent on the carcass. But this fisher looked like it had been healthy and uninjured when it died. Gabriel brought it back to his lab for testing and determined it had been poisoned with rodenticide, or rat poison. As more poisoned fishers turned up—tracking collars indicated none of the fishers had gone near farms—Gabriel began reporting his findings, and his bafflement over the cause, at scientific conferences. At one of the conferences, a conservation officer told Gabriel about the rodenticides and pesticides often found at trespass cannabis grows. The mystery was solved and it would change the trajectory of the ecologist’s life.

Initially, rodenticides were the more prevalent poisons and, while they’re still used, pesticides like Carbofuran have become the primary concern. It’s useful to the growers in a variety of ways: the pesticide is so potent in its concentrated form that a few bottles go a long way. That’s appealing to growers who hike in and camp for months at their grow sites. Further, Carbofuran is a systemic pesticide. Instead of just protecting the area where the poison is placed, Carbofuran is absorbed by the plants and soil, contaminating (and thus protecting) the entire plant from predators. Plus, it makes it dangerous for law enforcement to come into contact with the sites.

Once IERC understood the cause of the fishers’ poisoning, they connected with law enforcement and, in 2015, entered into a cooperative agreement with counter-drug officers. Law enforcement deals with the illegal aspects of the grows; IERC focuses on the environmental consequences. Gabriel is the expert on navigating the chemical dangers of trespass grows. Briefing law enforcement about cannabis grows, however, is not a place Gabriel ever expected to land. It’s the first time the 95th has been to a cannabis grow. They’re here to see if two handheld devices can accurately detect Carbofuran; IERC and law enforcement are in desperate need of a portable chemical detection device.

There’s no clear trail entrance, only a small dirt path near a fallen log. Before beginning the hike, Gabriel briefs the crew on what to do in the event of exposure. “We have an ER binder in the truck. If we have to medi-vac someone out, break the window, I don’t give a shit, and grab the binder because that binder should be transported with the individual. It will have all the MSDS [Material Safety Data Sheet] for every chemical we’ve ever detected, and it has a physician’s guide for pesticide poisoning. You’d be surprised, but [the nearest hospitals] have no clue about pesticide poisoning.”

Despite raiding Plummer months prior with law enforcement, Gabriel is sure they will find more of the toxic chemical. Just then, he stumbles across a tequila bottle filled with it. “It was like a freaking clown car of Carbofuran. The [apprehended grower] told me there were one or two bottles, but I kept finding more,” he recalls. He is so sure Plummer will remain contaminated because a different site, that was reclaimed in 2015, “is still testing positive for Carbofuran.”

One of the identically clad officers on the WMD team murmurs in surprise, “No shit?”

Using hazardous pesticides in high concentrations has a dual purpose, says Lieutenant DeWayne Little of California Fish and Wildlife: it keeps animals away from plants and law enforcement away from grows. Growers paint around the base of the plant with toothbrushes soaked in Carbofuran; small animals that try to eat the plants will die almost instantly. “You’ll see mice and rats doing backflips on the ground,” he says. Larger animals might have a few minutes before succumbing: a telltale sign of a nearby trespass grow is animal carcasses with no obvious injuries.

As for law enforcement, Little says, “Growers know that if we know the plants are contaminated, we’re less likely to touch it or eradicate it.” Little sighs, “if they can hurt law enforcement, that’s even better. We’ll find a contaminated grow, we’ll lock it down and sometimes walk away from it [for safety]. If we don’t catch the growers, they’ll come back and harvest it.”

The grower at Plummer told Gabriel as much. “I asked why he had so much Carbofuran. He said, ‘We use it because we know you know what it is.’ He doesn’t mean me specifically,” Gabriel clarifies. “He thought I was law enforcement.”

“There are a lot of law enforcement who won’t work on illegal marijuana grows anymore,” Gabriel says. Which is, of course, the point.

The expense of getting into the legal cannabis market and the prevalence of drug trafficking in the area has resulted in overall confusion about unpermitted cannabis grows. “Trespass grows are always bad,” says Casey O’Neill, co-owner of HappyDay Farms in Mendocino County, “but it’s important to distinguish among trespass grows, unpermitted grows on private land that use [restricted/banned] pesticides, and unpermitted grows on private land that aren’t using them.”

We’ll find material labeled with specific tape and specific writing on it in one county in one national forest, and we’ll find material labeled with the exact same specific tape and writing in another county and another national forest. That’s how coordinated and organized this is.

In the Emerald Triangle (Humboldt, Mendocino, and Trinity Counties, which comprise the largest cannabis producing region in the country), O’Neill says, there are plenty of unpermitted grows that aren’t harming the environment and get unfairly lumped into the ones that do. Gabriel and Little believe that the worst of the pesticides are being used by people affiliated with foreign cartels. “I think local [unpermitted] growers have a vested interest in not poisoning the land that their family has lived on for generations,” Gabriel says. It’s expensive to get into the regulated market, O’Neill says. There are many farmers for whom the cost is simply too high. O’Neill, who grows food on his farm as well as cannabis, says the regulatory cost of cannabis compared to food is astronomical. “You’ve got things like a $150 per pound agriculture tax, that I don’t have for the salad mix I grow right in the next bed.” These are not unrelated problems. “What makes it valuable to hike into public land and do one of these trespass grows,” he explains, “is the expense of producing [white market] cannabis.” Law enforcement and growers like O’Neill disagree about the size of the barrier to getting into the white market, but they are unwavering in their agreement that, as O’Neill says, “there’s no place for horrific poisons in agriculture.” While wildlife and law enforcement bear the brunt of the damage from these toxicants, residents of nearby towns (and smokers of contaminated black market weed) are also at risk. Three months after a Mendocino County Detective was hospitalized after being exposed to a similar pesticide, Metamidofos, nearby Trinity County issued a warning to the public about “a potential spill of suspected Carbofuran, Methamidophos, and Avermectin B1 pesticides into Mill Creek, a tributary to the Trinity River.” Residents were encouraged to seek medical treatment if they experienced symptoms like “nausea, vomiting, diarrhea, labored breathing, cyanosis, convulsions, and unconsciousness.”

The cartels’ sophistication makes them difficult to combat, Gabriel says. “We’ll find material labeled with specific tape and specific writing on it in one county in one national forest, and we’ll find material labeled with the exact same specific tape and writing in another county and another national forest. That’s how coordinated and organized this is.” It doesn’t help that recreational legalization has depleted law enforcement’s resources for combating illegal weed. “In a lot of drug task forces, a lot of the marijuana components have been disbanded,” Lieutenant Little says, “They’re not getting the funding they used to.”

Still, officials are more concerned with heavily concentrated toxicants killing endangered and threatened animals and poisoning nearby creeks, water theft and diversion, land erosion from irrigation, and the sheer amount of trash that simply requires more resources than these crews have. Getting a helicopter into a site for 3-4 hours to airlift out the thousands of pounds of trash and irrigation costs between $10,000–$12,000. That’s a tall order for counter-drug officials with dwindling cannabis resources, and a non-profit funded almost entirely by grants.

Public support for trespass grow eradication efforts is hard to come by because most people know how they feel about marijuana; 65 percent of Americans favor legalization. “They hear that you’re busting illegal grows and they think you’re a shill for the war on drugs,” Gabriel says.

This perception once earned Gabriel and Wengert the derision of their neighbors: living in the Emerald Triangle means a significant number of people in their community depend on the cannabis industry. But as the locals increasingly became aware of the environmental problems–like the 2018 pesticide spill in the Trinity River, public opinion is changing.“It used to be that putting out a press release about a cleanup would get 80 percent negative feedback, 20 percent positive.” Gabriel says, “Now, if a story [about our work] runs locally, the reactions are 60 percent positive, 40 percent negative. If it runs nationally, it’s going to be the opposite. Nationally, people still think ‘they’re perpetuating the drug war.’”

Neither of the ecologists relish seeing the growers arrested. “It bothers me that the people who are getting apprehended, they’re the lowest of the low [in the organization’s hierarchy].” Wengert says, “They should be held accountable. But they’re not the source of the problem.” They’re also very likely becoming ill from chronic pesticide poisoning.

Stricter penalties for using these toxicants would help; being caught with Carbofuran or a similarly restricted pesticide generally results in a fine. Gabriel gestures to the hillside where marijuana plants used to be, “Yeah, if you’re growing weed illegally on public land, there should be a punishment–-maybe 4-5 months.” He shrugs, “illegal is illegal. But if you get caught with a bottle of Carbofuran?” he frowns, “7-10 years.”

In the meantime, Gabriel stands in the arrested growers’ abandoned camp, just down the hill from where the 95th is conducting their tests. It’s littered with empty cans of tuna and beans, bags of fertilizer, pots and pans, plastic cups, toothbrushes, boxes of latex gloves, bottles of miracle grow, and sleeping bags. Despite being surrounded by massive, dense trees, the air smells faintly metallic. Gabriel thinks this is the scent of malathion, another pesticide. Black irrigation tubes sprawl across the hillside, connected to an impressively constructed cistern up the hill.

All of this will be up to the ecologists and law enforcement to clean-up during the reclamation process. In addition to getting a helicopter for the pounds of trash and irrigation, legally Carbofuran has to be airlifted out by either the Forest Service or Department of Transportation officials trained in handling hazardous materials. Today is part of the assessment: taking soil and water samples to determine the level of contamination, and evaluating how much manpower will be needed to reclaim it (they ultimately decide it will take 15-20 people trained in hazardous materials working 6-8 hours).

They know that there are thousands of sites like Plummer they won’t be able to get to this year; they know that animals will continue to die, hikers will be in danger, water sources will be contaminated, and tainted weed will flood the black market. It often feels like a very big, very dangerous game of whack-a-mole. But if they don’t do it, no one will.

Cookies are important to the proper functioning of a website. We use cookies to enhance website performance and to monitor website traffic. We also share information about your use of our site with our advertising and analytic partners for marketing purposes. Visit our Cookie Policy to learn more about our use of Cookies.

Sign up for the New Playboy Weekly

By clicking “JOIN” you agree to receive emails from Playboy, certify that you are at least 18 years of age, and have read and agree to our Privacy Policy and Terms of Use.