Nov 15, 2006 — International Paper has canceled a controversial plan to burn tire chips as an alternative fuel source at the company's mill in Ticonderoga. IP announced yesterday that had concluded a test of tire-derived fuel nearly a week early. The test was also halted briefly last week when emissions threatened to exceed mandated levels. Spokeswoman Donna Wadsworth says preliminary test data indicates that long-term use of tire-derived fuel would not be economically feasible. While burning tires at a third of the target rate, the boiler was already producing particulate pollution close to the permitted environmental limit. State officials in Vermont -- including Governor Jim Douglas -- opposed the test and filed a lawsuit to block it. They worried that increased pollution would blow across Lake Champlain. Yesterday, pro-environment groups praised IP's decision to cancel the project. BJ Ernst is executive director of the Northeast Clean Air Coalition in Vergennes Vermont. She spoke last night with Brian Mann.