New York Times: An environmental advocacy group`s tests of river water and ash near the site of a huge coal ash spill in East Tennessee showed levels of arsenic, lead, chromium and other metals at 2 to 300 times higher than drinking water standards, the group said Thursday. The findings far exceed levels reported by the Tennessee Valley Authority, the Environmental Protection Agency or the Tennessee Department of Environment and Conservation. Those agencies have reported elevated levels of thallium, …