A group trying to stop a large hog farm in mid-Missouri wants a judge to void a state permit for the project.

Friends of Responsible Agriculture has been fighting the proposed farm for two years. Callaway Farrowing wants to put 10,000 pigs in barns on 20 acres in western Callaway County.

The Columbia Daily Tribune reports the farm's opponents want Cole County Circuit Judge Daniel Green to issue an order to void a vote by the Missouri Clean Water Commission approving a permit for the farm. The opponents' lawyer says only three members of the seven-member commission supported the permit and four votes are required for approval.

Farm supporters want Green to recognize that a majority of the commissioners voted to issue the permit.

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