BPA 1100 kV Transmission System Development-Environmental Studies

Environmental studies are an integral part of the Bonneville Power Administration Lyons 1200-kV prototype line test program being conducted at Lyons, Oregon. Through the first two growing seasons following energization, these studies have documented the lack of significant impact of the facility on tree and crop growth, cattle, honeybees and wildlife. Douglas fir trees left growing near the line have experienced some damage due to induced corona which is similar to that documented for EHV lines.