The pipeline giant TransCanada, stymied in its attempt to drive Keystone XL through America\u0026#039;s heartland, is facing renewed opposition to its \u0022new and equally misguided proposal\u0022 to build the Energy East pipeline across Canada and ship tar sands oil via tankers along the U.S. East Coast to refineries in the Gulf of Mexico.\u0026nbsp;In partnership with a number of Canadian and U.S. environmental groups, the Natural Resources Defense Council (NRDC)—a major player in the fight to defeat Keystone XL—on Tuesday released a new report outlining how Energy East would \u0022effectively create a waterborne tar sands pipeline with hundreds of new oil tankers traversing the Atlantic coastline, making vast areas of the Eastern Seaboard vulnerable to a dangerous tar sands spill.\u0022Indeed, the group notes that the Gulf of Maine, Acadia National Park, and the Florida Keys are all in the pipeline\u0026#039;s \u0022crosshairs,\u0022 as well as iconic marine species and billion dollar commercial fisheries on the East Coast, including New England and Atlantic Canada\u0026#039;s lobster and sea scallops fisheries.And that\u0026#039;s on top of the pipeline\u0026#039;s climate impacts; according to the NRDC analysis, Energy East would bring a significant increase in carbon pollution—equivalent to the annual emissions of as many as 54 million passenger vehicles—and lock in high-carbon infrastructure expected to operate for at least 50 years.\u0022TransCanada\u0026#039;s Energy East proposal is truly Keystone XL on steroids,\u0022 said Joshua Axelrod, a co-author of the report and NRDC policy analyst. \u0022It\u0026#039;s all risk and no reward for millions of Canadians and Americans, iconic landscapes, valuable fisheries and our climate.\u0022With the report, entitled Tar Sands in the Atlantic Ocean: TransCanada\u0026#039;s Proposed Energy East Pipeline (pdf), the NRDC joins a chorus of existing Energy East opponents. The project is currently under consideration by the National Energy Board (NEB), with hearings expected to begin in Saint John, New Brunswick, on August 8.In making its argument, the NRDC leans on a 2016 study by Canada\u0026#039;s National Academy of Sciences (NAS), which found that large portions of diluted bitumen—which Energy East would transport—can be expected to sink if spilled in water. The same report found that current regulations and spill response techniques are incapable of managing the unique behavior and higher risks of tar sands diluted bitumen spill in water.A press statement (pdf) from Greenpeace Canada notes that the NEB refused to consider the same NAS study in its Kinder Morgan pipeline analysis.\u0022To be at all credible, the National Energy Board must give the NAS study a central role in its review of Energy East,\u0022 said Matt Abbott of the Conservation Council of New Brunswick.Meanwhile, the NRDC is calling for a tar sands oil tanker moratorium in U.S. and Canadian waters until appropriate spill response techniques are developed to address a diluted bitumen spill into water. But beyond that, many say the pipeline simply should not be built. Pointing to the devastating pipeline leak that flooded the North Saskatchewan River with 200,000 liters of tar sands crude last week, the Council of Canadians on Monday warned that spills are \u0022inevitable and permanent consequences of transporting oil.\u0022\u0022When thinking about the future we want, let us remember that the proposed Energy East pipeline crosses 90 watersheds, nearly 3000 waterways, and puts the drinking water of over 5 million people at risk along its route,\u0022 wrote energy and climate justice campaigner Daniel Cayley-Daoust.