LOS ANGELES (AP) — Two months after two men were arrested at an illicit marijuana farm on public land deep in the Northern California wilderness, authorities are assessing the environmental impact and cleanup costs at the site where trees were clear-cut, waterways were diverted, and the ground was littered with open containers of fertilizer and rodenticide.

A group including U.S. Forest Service rangers,
local law enforcement, scientists and conservationists hiked into the
so-called trespass grow where nearly 9,000 cannabis plants were
illegally cultivated on national forest land in the region known as the
Emerald Triangle, for the marijuana that has been produced there for
decades.

Authorities allege members of an international drug trafficking ring set up camp at the site as far back as 2015.

When
deputies raided the remote clearing in the woods Sept. 9, they found
hundreds of pounds of harvested marijuana, thousands of pounds of trash
and more than 3 miles (4.8 kilometers) of plastic irrigation piping,
according to the Trinity County Sheriff’s Office. They also discovered
bottles of carbofuran, a banned neurotoxicant used to kill rodents that
also has been linked to the deaths of spotted owls, fish and mountain
lions. A quarter-teaspoon can kill a 300-pound (136-kilogram) bear.

The case highlights some of the growing pains California has faced since kicking off broad legal sales in 2018. Its legal marijuana market has grown to more than $3 billion but remains dwarfed by a thriving illegal market, which rakes in nearly $9 billion annually. Limited resources mean officials can’t keep up with all the illegal sites that are remnants of the outlaw era, when much of the pot for the U.S. black market came from the Emerald Triangle.

Experts
say illegal sites like the one found in the Shasta Trinity National
Forest, about 100 miles (160 kilometers) from the Oregon line, siphon
valuable water, pollute legal downstream grows and funnel potentially
tainted cannabis onto the streets.

“These places are toxic garbage
dumps. Food containers attract wildlife, and the chemicals kill the
animals long after the sites are abandoned,” said Rich McIntyre,
director of the Cannabis Removal on Public Lands (CROP) Project, which
is dedicated to restoring criminal grow sites on state and federal
property in California. “We think there’s a public health time bomb
ticking.”

CROP is a coalition of conservation organizations,
tribes, elected officials, law enforcement agencies and federal land
managers. Also lending its support is the legal cannabis industry, which
says it’s being undercut by the criminal market. Officials estimate
that up to 70% of California’s illicit pot comes from trespass grows
mostly on public land.

“We see illegal grows as undermining the
legal cultivators and manufacturers” by reducing tax revenue, said
Lindsay Robinson, executive director of the California Cannabis Industry
Association, a trade group. “We’re seeing untested and unregulated
cannabis flooding the market.”

Black market marijuana is
potentially dangerous because traces of the toxic chemicals used at grow
sites are often found in the plants, she said.

“If you have an
illicit grow upstream from you, and you’re legal, that could end up
tainting your product and prevent it from entering the market,” Robinson
said.

CROP estimates that 9 billion gallons (34 billion liters)
of water are diverted to trespass grows in California each year — a
yearly supply for a city of 35,000 homes.

“In a state like
California where water battles and drought are a way of life, that
number is shocking,” McIntyre said. More than 60% of California’s water
comes from national forest land.

Authorities in 2018 made dozens
of arrests at trespass grows while seizing hundreds of thousands of pot
plants along with cash and guns. Criminal growers often use powerful
firearms to protect their operation, McIntyre said.

“There are
stories of people — hunters, fishermen, hikers — who find themselves
down the barrel of an AK-47” after stumbling on illegal grow sites, he
said.

The toxic chemicals were cleared from the Shasta site Oct.
16, and a “decommissioning” cleanup — removing everything brought in by
growers — should happen within a year. The goal is to restore illegal
grows to pristine condition complete with reseeding and replanting, but
that plan lacks funding.

CROP is lobbying for federal and state
money to clean and reclaim an estimated 2,000 sites, a process it says
could take seven to 10 years.

It’s also pushing to increase the
number of U.S. Forest Service rangers in California’s national forests.
Reclaiming each site costs an average of $40,000, requiring trained
crews, law enforcement resources and often National Guard air support to
remove tons of materials from remote areas, the group said.

The
group has a supporter in Democratic U.S. Congressman Jared Huffman,
whose Northern California district includes huge swaths of state and
federal property.

“We’ve seen firsthand how illegal grow
operations threaten visitors to our public lands, steal water and
contaminate streams, and kill wildlife on a landscape scale,” Huffman
said in a statement. He’s introduced legislation that would identify the
problem of trespass grows, expand land protections and free up funds to
address it.

CROP is also pushing lawmakers to increase penalties
for anyone who brings toxic chemicals to public lands. U.S. Attorney
McGregor Scott said last year that federal authorities are concentrating
their efforts on hazardous illegal grows.

Nine of every 10
illegal marijuana farms raided in California in 2018 contained traces of
carbofuran, researchers at the Integral Ecology Research Center in
northwestern California said last year.

That was a jump from chemicals found at about 75% of illegal growing operations discovered on public land in 2017, and it was six times as high as in 2012.

By Christopher Weber

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