MAYVILLE — Modifications to upgrade the North Chautauqua Lake Sewer District’s treatment plant drew action from the legislature’s Audit and Control Committee.

On Thursday, legislators scheduled a public hearing for next month regarding plan and cost changes to phosphorus removal upgrades to the plant in Mayville. Two years ago, the County Legislature approved $2.8 million in spending to get the treatment plant in Mayville up to standards.

Since then, the county changed engineers from AECOM to O’Brien & Gere. Tom Carlson, director, acknowledged a change was made due to a dissatisfaction with the engineering product by AECOM, which in that time merged with another engineering firm in URS Corp.

Between the engineering change and a new DEC disinfection technology requirement, the project rose to around $3.9 million.

“We went with O’Brien & Gere and they’re doing the South and Center Sewer District and everything else in regards to the sewer (expansion),” Carlson said. “It was a good fit, but it put us back a little. The other component is the DEC now requires us to dechlorinate. Not only do we have to chlorinate to disinfect, but we have to dechlorinate.”

Rates won’t see further increases from the original plan, which proposed going from $94 to $472 to the typical single-family home within the district. Rates will instead go from $88 per year to $466 per year. The county was able to secure zero percent financing for the project, but a March deadline looms to submit an application.

With changes to disinfection procedure, the plan will also replace the existing emergency generator and the original mechanical bar. The plant’s roadway will also be milled and repaved under the plan.

Chairman Pierre Chagnon, R-Bemus Point, said the improvements are substantial with better phosphorus removal at the plant. In addition, he said the new plan is affordable with no-interest financing available.

The public hearing is set for Wednesday, Feb. 22 at 6:45 p.m. in the legislative chambers of the Gerace Office Building. County Attorney Steve Abdella said a notice would go out to property owners in the district regarding the public hearing.

A fixed-base operator and hangar lease agreement at the Jamestown Airport didn’t pass through committee with two members absent and legislator Charles Nazzaro, D-Jamestown, voting no. But the agreement with Jamestown Aviation will still make its way to the full County Legislature with approval from the Public Facilities Committee earlier this week.

The lease agreement will go to a public hearing at Wednesday’s legislature meeting at 6:35 p.m. Details show lease terms ending Dec. 31, 2029. Jamestown Aviation has the ability to terminate on two years notice if the Jamestown Airport has commercial air service, or a year notice if there’s no more passenger service.

Rent is $6,000 per month with an annual 2 percent increase and no commissions. In the past, the county received commissions for fuel, hangar rents, parking and tie-downs.

Nazzaro has placed concerns around the length of the agreement and no rights of termination for the county. Nazzaro has reiterated that he’s not criticizing the FBO for their service.

With legislative approval, the county would stay away from getting into the FBO and hangar lease business, which was recommended in an airport feasibility study released last year.