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OLEAN – Since 2001, the state Department of Environmental Conservation has been urging City of Olean officials to fix problems with untreated water being discharged into the Allegheny River. The Common Council unanimously adopted resolutions Tuesday to begin the process. The $19.25 million in renovations will be the first since the 1970s.

The repair plan, according to Mike Manning, of Syracuse-based O’Brien and Gere, the engineering firm for the project, and Tom Windus, city director of public works, would see the replacement of the influent pumping system. The current three pumps, used to bring the water into the station, were upgraded in the 1970s.

According to industry recommendations, Windus said, the addition of two pumps would be needed to handle larger flows, when heavy rains or spring runoff occurs.

Replacement of the screening system would also be on the slate for work, Manning said. The current system is able to partition out materials of an inch-and-a-half or larger. The proposed process would filter to a quarter of an inch. To achieve this result, however, new screens, a new press and an addition on the current screening building would be needed.

“This is the largest works project I can remember,” Windus said of the project.

It will be paid for principally by borrowing through the sale of bonds.