Add another $25,200 to the cost of the expansion project at Sandusky's wastewater treatment plant.
City commissioners approved an eighth change order Monday night, allowing contractors to replace insulation in part of the roof at the wastewater plant on Harrison Street.
Earlier this month, workers from Mosser Construction, of Fremont, found insulation in the roofs was saturated and no longer effective. The change order puts the city's portion of the expansion project at about $16.8 million, up from the projected $13.4 million when the project started two years ago.
Earlier this year, wastewater plant supervisor Jeff Meinert said the improved facility will help attract business.
"It's actually one of the better moves the city has made," Meinert said. "If you don't have good utilities, it's hard to attract outside companies. That's one of the first things they look for."
All told, the project is now expected to cost $20.5 million, with Erie County picking up about $3.7 million.
The upgrade will increase the plant's peak volume from 24 million gallons a day to an EPA-mandated 42 million gallons. The goal is to dump less contamination into Sandusky Bay.
These days, a prolonged rain shower causes the wastewater treatment plant to exceed its 24-million-gallons-per-day capacity. The excess water is dumped into the bay.
That happens about a dozen times a year -- sometimes several dozen times -- and the city must limit dumps to four or less per year, officials said. Construction on the expansion project started in November 2008. The targeted finish date is May 15.