I have a subject property which abuts a high voltage power line easement. There is a tree buffer, but the lines are visible. I have searched back two years for sales abutting similar power lines with no results. I used google earth to track these particular lines, pulled up any home in tax records in similar proximity to the lines and came up empty, no recent sales. So, a matched pair analysis is not possible. Now what? Clearly there would be an impact on marketability, but if I cannot prove an adjustment, how should I handle this?