According to FingerLakes1.com, Casella Waste Systems Inc. has offered to drop all plans to spread sewage sludge on fields in Thurston if the Steuben County town will allow to operate a composting facility instead at its Bonny Hill Organics site. But Town Supervisor Michael Volino said Sunday that Thurston won’t be accepting that informal offer made to him in an Aug. 5 letter from Tom West, the company’s attorney.