Complaints from residents near Denny Farms Inc. have put its conditional use permit to operate a four-wheel-drive mud run in Robertsville in jeopardy.

The Franklin County planning board will hold a hearing to consider revocation of the CUP at its next meeting Tuesday, June 18.

Planning and Zoning Director Scottie Eagan said two residents filed complaints after the last “mudfest,” held Saturday, May 4, because a large amount of mud was smattered on Rabbit Lane and nearby roads.

There also were complaints about heavy traffic that caused a bottleneck near the farm.

According to the conditions of the CUP, “traffic shall not be stacked onto county road, and the traffic shall be disbursed off the road before and during the event.”

The CUP also states that mud shall be cleaned and removed off all vehicles prior to departing off the property.

According to the mudfest website, free power washing is offered at the entrance to the farm, but chunks of mud were deposited on Routes N and O and the parking lot at Robertsville Elementary.

Meramec Valley R-3 School District Superintendent Randy George said Buchanan family members voluntarily came out and cleaned the lot.

“They cleaned it up and even squeegeed the lot,” he said.

George said the Buchanans have been helpful to the school, allowing the district to use their facility for fundraising events.

“They let students come out and powerwash vehicles to raise money for our football team,” he said. “They have always worked with us and have been very helpful to our district.”

Planning board member Eva Gadcke said a culvert was destroyed on Denny Lane and other repairs had to be made to the gravel road surface.

Gadcke said the county is looking into possibly recovering some of the cost from the Buchanans for the damage to the road and culvert, however, nowhere in the CUP does it state that Denny Farms Inc. would be held responsible for road repairs.

The Buchanans hold the four-wheel-drive events twice a year, in the spring and fall, and Jeff Buchanan said the family has appeared before the planning board in the past for similar reasons.

“It’s something we’re not too concerned about,” he said.

Buchanan said he hasn’t received any complaints directly from neighbors.