Minnesota Supreme Court weighs state agencies' standing in quarry expansion near ancient petroglyphs

Minnesota Supreme Court justices appeared inclined to grant standing to the Minnesota Pollution Control Agency and the State Historic Preservation Office in a dispute over the Sioux Rock Quarry’s expansion near the Jeffers Petroglyphs, a site dating back roughly 7,000 years. The quarry, operated by Minnesota Paving Materials and later leased to Martin Marietta Materials, filed for an interim-use permit in 2023 without completing a full environmental impact statement, prompting the agencies to challenge the county’s decision.

The mining company, represented by attorney Jeffrey Markowitz, argued the agencies have not shown a direct injury and warned that allowing such suits could open the floodgates to countless challenges of local zoning. Justice Anne McKeig questioned whether the agencies’ inability to perform their regulatory duties constituted an injury, while Assistant Attorney General Phil Pulitzer emphasized that Minnesota has required comprehensive reviews for over five decades.

The justices noted that a ruling favoring the agencies could reshape how state and local bodies interact in future environmental cases, potentially leading to the revocation of the land-use permit even if standing is denied. The outcome may set precedent for protecting historic sites from industrial projects across the state.