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Development of a Remote External Repair Tool for Damaged or Defective Polyethylene Pipe Final Report Reporting Period: October 1, 2003 – June 30, 2006 Principal Authors: Kenneth H. Green, Willie E. Rochefort, Nick Wannenmacher, John A. Clark, Kevin Harris February 2007 Contract/Grant No. DE-FC26-03NT41879 Submitted by: Timberline Tool 2594 Montana Highway 35 Kalispell, MT 59901 Significant Subcontractor: Oregon State University Chemical Engineering Department Corvallis, OR