Peter Edwards Eagle Project in Westford For his Eagle project, Peter Edwards of Troop 437 in Westford built this bridge on the Wilson Conservation Land, which owned by the Westford Conservation Trust. The area is right off Preservation Way. Peter used ACQ treated Preserve® and Preserve® Plus®. ACQ does not contain arsenic or chromium. Preserve® treated wood provides long-term protection against decay and termites; and Preserve® Plus® offers built-in water repellent, plus preservative protection, to provide long term performance against decay, termites and weathering.