Two groups have sued the Louisiana Department of Environmental Quality, alleging the department violated its constitutional public trust duties, the Clean Air Act and state regulations when approving permits for a planned $7.5 billion ammonia plant in Ascension Parish.

Following a public hearing earlier this year, LDEQ granted Clean Hydrogen Works (CHW) an air permit and a permit required for large facilities building in areas that meet or exceed federal air quality limits. That company intends to construct Ascension Clean Energy, an ammonia plant that utilizes carbon capture and sequestration technology near Donaldsonville and the community of Modeste.

The lawsuit was filed Nov. 24 by the Donaldsonville-based Rural Roots Louisiana and the New Orleans group Louisiana Bucket Brigade. It

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