On a quiet stretch of the Nolichucky River near the tiny Poplar community, an unpermitted open-pit quarry has carved into the riverbank and started dumping sediment and discolored runoff into the water, according to residents and regulators. Horizon 30 LLC began blasting and hauling rock in early 2025 while the gorge was still trying to recover from Hurricane Helene, and inspectors and environmental lawyers say the activity has already left hefty sediment deposits in the channel. Locals warn the river - home to rare species and a modest but important recreation economy - could face long-term damage if the site is not properly stabilized.
State Timeline and Inspections
State mining inspectors first showed up at the Carter Quarry on February 6, 2025, and reported new roads and roughly four acres of disturbed land, part of a timeline the Department of Environmental Quality has released publicly. The agency says Horizon 30 submitted a partial permit application on April 11. By April 23, inspectors say the disturbed footprint had grown to about 10 acres despite repeated orders to stop work. DEQ reports that it issued notices of violation and pursued enforcement as the operation expanded, which eventually led to court action, according to NC DEQ.
How the Operation Grew and the Court Order
Neighbors told reporters that blasting started in late January or early February 2025, and inspections later documented that mining activity spread to as much as 30 acres of the roughly 50-acre property by August. The state sued, and on August 11, 2025, a superior court judge ordered Horizon 30 to stop removing material. The company’s permit application was later denied after the agency found the operation out of compliance. Company officials and the property owners did not respond to requests for comment, according to the News & Observer.
Evidence of Pollution and Species at Risk
A 60-day notice filed by the Southern Environmental Law Center includes aerial photos, site images and lab results that show sediment fans and an orange-tinged discharge flowing from the quarry into the Nolichucky through culverts and channelized conveyances. The filing argues those flows include acid-mine drainage and heavy metals and documents sediment deposits that in some spots extend far into the river and form bars that narrow and shift the channel. That is not a small detail for the Nolichucky Gorge, which provides habitat for sensitive wildlife such as the eastern hellbender and the endangered Appalachian elktoe mussel. Sedimentation can smother habitat and choke aquatic life, according to the Southern Environmental Law Center.
State and Legal Pressure
The state’s mining division issued a civil-penalty assessment of roughly $460,000 in December 2025 for unpermitted mining, and agency filings show DEMLR has asked the courts to enforce reclamation actions at the site. Environmental groups followed up with a formal notice of intent to sue under the federal Clean Water Act in February 2026, warning that continued discharges could spark federal litigation seeking daily penalties, attorney fees and an injunction. Regulators and advocates say both the state enforcement case and the potential federal suit are aimed at forcing Horizon 30 to complete meaningful stabilization work rather than quick temporary fixes, as reported by WUNC.
What Locals Are Seeing
Residents and river outfitters say the mine piled on to the devastation left by Hurricane Helene, coating houses and gear in dust and making recovery work that much harder. “They came in literally in the dark of night,” a Poplar resident told reporters, describing how the operation ramped up. Other locals reported repeated blasting and visible sediment in the river. Outfitters and guides who depend on the Nolichucky worry about long-term ecological and economic fallout if the site is not properly reclaimed, according to the News & Observer.
What Happens Next
DEQ says it approved a modified reclamation plan in December 2025 and directed operators to install ground cover, repair slopes and stabilize the site, according to NC DEQ. Inspectors and environmental groups say much of that work remains incomplete, according to the Southern Environmental Law Center. With SELC’s 60-day notice running and state enforcement still active, the dispute is expected to head back to court this spring, where judges will weigh whether reclamation has gone far enough and whether federal Clean Water Act claims should move forward. Until then, downstream communities and river users remain on alert while inspections, water sampling and legal filings continue to stack up.
