Minnesota Supreme Court: Martin Marietta Standing in Quarry EIS Challenge

• The Minnesota Supreme Court is reviewing whether state agencies have standing to challenge a quarry expansion near the 7,000-year-old Jeffers Petroglyphs.
• Martin Marietta Materials plans to expand the Sioux Rock Quarry in Cottonwood County within a quarter mile of the sacred site, after receiving an interim-use permit without a full environmental impact statement (EIS).
• The Minnesota Pollution Control Agency and State Historic Preservation Office filed petitions, arguing the lack of an EIS impairs their regulatory duties and prevents proper project assessment.
• The mining company contends state agencies have shown no concrete injury and that other study tools exist to determine environmental impacts.
• Supreme Court justices appeared inclined to grant state agencies standing, with one justice noting that impaired regulatory ability could constitute sufficient injury.

It seems to me this is a governmental agency that has an impaired ability, the action is impairing their ability to carry out their regulatory obligations, how is that in and of itself not an injury?

A significant legal battle is unfolding in Minnesota concerning the proposed expansion of a quarry near a sacred Indigenous site, with the state's highest court currently weighing the authority of state agencies to intervene in local land-use decisions. The dispute centers on the Sioux Rock Quarry in Cottonwood County, an operation that has been active for decades. In 2023, Minnesota Paving Materials, which announced the permanent closure of 14 facilities and layoffs of nearly 300 workers effective December 19, 2025, and whose lease rights were later assigned to Martin Marietta Materials, put forth a plan to expand the quarry. This expansion would bring mining activities within a quarter mile of the Jeffers Petroglyphs, an ancient site featuring rock carvings that are thousands of years old and are considered vulnerable to dust damage.

Cottonwood County granted an interim-use permit to Minnesota Paving Materials for this expansion without requiring a full environmental impact statement (EIS). This decision prompted the Minnesota Pollution Control Agency (MPCA) and the State Historic Preservation Office (SHPO) to file initial petitions with the state court of appeals in May and June of 2025. These agencies challenged the county's permit approval, arguing that a comprehensive environmental review was necessary. The court of appeals subsequently issued conflicting rulings, affirming that state agencies possess standing to contest skipped environmental reviews, but simultaneously determining that the SHPO lacked the authority to challenge the land-use permit itself.

The core issue before the Minnesota Supreme Court on a recent Wednesday was Martin Marietta Materials' challenge to the state agencies' standing to demand an environmental impact statement. Representing the mining company, attorney Jeffrey Markowitz contended that the state agencies had failed to demonstrate any concrete injury, suggesting they were merely 'fishing' for potential environmental impacts that might not exist. Markowitz further argued that if the SHPO's claim were upheld, it could set a precedent allowing appeals of zoning and EIS decisions for any of the more than 100 historic sites across Minnesota, regardless of distance from a project, simply based on a claimed connection.

Markowitz also asserted that state agencies do not require an EIS to gather the information they seek, as other study tools are available to assess the mine's potential impacts. However, the justices appeared to express skepticism regarding this argument. Justice Anne McKeig notably questioned the company's position, stating, "It seems to me this is a governmental agency that has an impaired ability, the action is impairing their ability to carry out their regulatory obligations, how is that in and of itself not an injury?" This observation highlighted the court's inclination to consider the impairment of regulatory duties as a form of injury for state agencies seeking standing.

Assistant Attorney General Phil Pulitzer, representing both the MPCA and SHPO, countered the mining company's arguments by emphasizing the long-standing custom of environmental review in Minnesota. Pulitzer asserted that Cottonwood County and Martin Marietta were neglecting proper environmental review, a practice that has been integral to state law for over five decades. He suggested that the company and county were attempting to revert to a time when the full scope of a project's impacts was not adequately understood, leading to greater environmental consequences.

Pulitzer stressed that state agencies and project leaders typically collaborate to address environmental concerns and avoid litigation. He argued that the denial of an EIS directly injures the state agencies by depriving them of essential information needed to properly permit the project and to devise appropriate mitigation measures to safeguard the historic Jeffers Petroglyphs. Without a clear understanding of dust dispersion, for instance, Pulitzer maintained that it becomes impossible to accurately determine the project's impacts. The Minnesota Supreme Court justices appeared largely receptive to the state's arguments, suggesting a potential broadening of state agencies' standing in such disputes.

Lawyers advising developers or local governments in Minnesota should note the potential for state environmental and historic preservation agencies to gain broader standing to challenge local land-use permits and demand full environmental impact statements, even without demonstrating direct injury. This could increase regulatory scrutiny and litigation risk for projects near protected sites, requiring more robust environmental review processes upfront.

Source: Original reporting via Courthouse News Service