Replacement HVAC ductwork for the Warren County Health Department was approved Tuesday afternoon in a special meeting of the county’s Building and Grounds Committee.The replacement of the ductwork will cost $1,400.The committee also approved modification of an interior door to include a window. The maximum cost for this project will be under $350.Committee chairman Carl E. Bouldin and Commissioners Carolyn Miller, David Rhea, Kenny Roberts, and Michael Shane Wilcher voted unanimously to approve the improvements.Plans to trim a pine tree and clean vines off an electric pole were also made.County Executive Herschel Wells and county maintenance director Greg Bowdoin were also in attendance. County custodian Billy Ralph was not present.