In 2007, PC Construction Special Projects Group awarded GW Tatro construction, Inc. with Phase 1 of the Marshfield Penstock Replacement Project. This would be the first of 5 phases over the next several years and in 2011 GW Tatro had successfully installed over 6,700 LF of 72” Diameter Steel Penstock in Marshfield alone. Since then GW Tatro has completed several other Penstock Replacement Projects across Vermont and New England, totally over 10,000 LF. The largest diameter installed to date was 144” in 2012 in Pepperell, MA. Let us utilize our experience to help you design or budget your next penstock project.