Comal County residents are suing the Texas Commission on Environmental Quality to stop the construction of a quarry they say will pollute the air with a lung-damaging contaminate.

Stop 3009 Vulcan Quarry and Friends of Dry Comal Creek filed a lawsuit in Travis County court on Monday to overturn TCEQ’s permit for a Vulcan Materials Co. rock-crushing facility. The facility will be a piece of a proposed limestone quarry, which Vulcan plans to place on a 1,500 acre site in the Hill Country between New Braunfels and Bulverde.

TCEQ commissioners unanimously approved the project in November following the recommendation of a state administrative law judge.

“The Texas Government Code prohibits the Commission from substituting its own judgement in place of the ALJ’s judgement,” TCEQ Chairman Jon Niermann said at the time.

Read more from Jessica Corso with San Antonio Business Journal here.