SEADRIFT — On a warm, breezy afternoon last week, Diane Wilson stood at the front of a deep, metal storage shed, covered in a sheen of sweat. It was still full of stuff — blue tarps, file cabinets, luggage and plastic boxes filled with paperwork. But it had been far more crowded just days earlier.

Wilson had spent the week shuttling cardboard boxes and plastic bins into a borrowed livestock trailer. The containers were packed with baggies chock-full of thousands of milky plastic pellets and water bottles filled with chalky white powder. For years, Wilson — a retired shrimper whose family has lived on this part of the Texas Gulf Coast for more than a century — painstakingly collected the waste from a nearby bay and creek from her kayak and on foot.

On Monday, she’ll haul it into a federal courtroom in Victoria, where her pro-bono lawyers will present it as evidence of illegal dumping by Formosa Plastics Corporation, a Taiwanese petrochemical manufacturer that operates a sprawling, 2,600-acre plant in Point Comfort. After years of waging a grassroots war against the company — the community’s largest employer — Wilson is finally getting her day in court.

“There are pellets and powder in the bay, in the harbor, and it’s also on the shores. It’s at Magnolia Beach, Indianola Beach, Lighthouse Harbor, where people go to swim. You can find it anywhere you go, and it blows your mind,” Wilson said. “There needs to be light shown on the truth. Finally, people around here will know exactly what is going on.”

Wilson said she first learned about the plastic pellets in 2009 when a former Formosa employee asked her to meet in Rockport, 50 miles away, to determine if Wilson was trustworthy. The following year, she unsuccessfully asked state regulators to revise Formosa’s permit to include stricter language that would prevent unlawful discharges.

Eventually, she lodged formal complaints against the company with the U.S. Environmental Protection Agency and the U.S. Fish and Wildlife Service.

In 2009, the EPA fined Formosa $13 million for air, water and hazardous-waste violations. But Wilson said the company has continued to discharge pellets into the bays and still isn’t reporting it to the state, as required by law.

So in July 2017, Wilson sued Formosa in federal court under a law that allows citizens to sue industrial polluters when government regulators fail to act. She and her co-plaintiffs, the San Antonio Bay Estuarine Waterkeepers, are seeking penalties of up to $184 million — $104,828 per day for every day Formosa was allegedly out of compliance with state and federal environmental permits and laws that require companies to report such violations.

It’s the maximum penalty allowed under federal law, lawyers for the plaintiffs noted in the lawsuit. But Wilson said that amount only accounts for the past three years — not the entire 26 years she alleges Formosa has been discharging illegal amounts.

Formosa’s state permit prohibits the discharge of floating solids and “floating solids or visible foam in other than trace amounts.” Wilson’s suit argues the amount of discharge is clearly more than trace amounts.

In its initial response to Wilson’s complaint, Formosa denied violating its permits or the Clean Water Act.

“Formosa denies that it has illegally discharged or is illegally discharging or that it has harmed or is harming Cox Creek, Lavaca Bay, Matagorda Bay, the surrounding wetlands, beaches, or their wildlife,” the filing said.

Formosa declined to comment for this article.

But since Wilson and the Waterkeepers filed suit, Formosa has taken a variety of steps to tamp down on waste, including hiring private contractors to clean up the pellets and constructing buildings to store them.

In January, Formosa said it had formed an industry group called the Alliance to End Plastic Waste with the intended goal of “eliminating plastic waste in the environment.” Other alliance members include oil, gas and chemical companies like Dow, ExxonMobil, P&G, ChevronPhillips and Shell.

Also in January, the Texas Commission on Environmental Quality slapped Formosa with a $121,875 fine for failing to prevent the release of solids and properly analyze wastewater samples.

TCEQ said it does not comment on pending litigation. A spokesperson said a subsequent investigation is ongoing after the January fine.

Wilson said the fine was a nominal amount for an international company that plans to build a $9.4 billion facility in Louisiana.

Like her father, her uncles and her brothers, Wilson worked the Gulf waters as a shrimper — she retired in 2003 — and she takes water pollution personally. She says the plastics in the waterways have decimated the local fishing economy.

Across the bridge from the Point Comfort plant, Poor Boy Bait shop owner Dora Terry said the plastic pollution is partially to blame for a sharp decline in the amount of the shrimp, crabs and mullets in the bay that shop employees catch to sell as bait.

Terry said she first noticed a dramatic decline in shrimp hauls in 2015. Now, she says the amount people catch is so low, they have to truck some in from Galveston.

“We used to be able to go out there and catch 75, maybe 100 pounds a drag,” Terry said. But the other day, she said, an employee caught only 10 pounds in 12 hours.

Wilson, who is 70, said it’s traumatic seeing what’s happened to shrimping and fishing in the area.

“The water was our lifeblood, a community, a way of being,” Wilson said.