More information about utility pole wood preservatives: Pentachlorophenol

In April 2014, the Agency of Natural Resources (ANR) requested an investigation into the discovery of pentachlorophenol in a water supply of a Monkton, Vermont, residence near one of VELCO's transmission lines. The site investigation was conducted on behalf of VELCO by consultants Vanasse Hangen Brustlin (VHB).

To view the report, click here. 

VELCO is committed to addressing the health and environmental concerns linked to VELCO's treated wood poles. After the detection of penta in a shallow water supply in Monkton, VELCO completed a review of its entire electric transmission system to identify shallow drinking water sources located within 100 feet of our treated-wood transmission structures. VELCO will review planned pole maintenance work near identified springs used for drinking water, and consult with landowners prior to performing such work. For springs that are no longer used, VELCO will collaborate with landowners to properly abandon shallow water supplies. 

In July 2014, ANR proposed that the Vermont Public Service Board (PSB) seek a larger investigation into the statewide use of penta by utilities through a collaborative process by which a stakeholder working group, led by ANR and appointed by the PSB, would develop a set of proposed pentachlorophenol best management practices for adoption in Vermont.

The final report of the collaborative working group was filed on 1/11/2016 and is available here.