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USA coastal communiities monitoring sea-borne Fukushima radiation plume

Fukushima radiation concerns coastal communities Tracy Loew, Statesman Journal 25 June 14, Talk in the Oregon coast town of Bandon often turns to the approaching plume of sea-borne radiation from Japan’s crippled Fukushima nuclear power plant.

“We’ve been worried about it and worried about it,” said Zac Adams, owner of Bandon Designsconstruction company. “We’re really concerned about it affecting the fisheries, the wildlife, the tourism, and most importantly our health.”…….

The radiation is expected to hit the U.S. this year at very low levels that wouldn’t harm humans or the environment. But no federal agency is monitoring it.

So Adams joined a citizen-science project, crowd-sourcing funds in his community to test a sample of seawater that he will soon collect.

Four hours north, the Tillamook Estuaries Partnership has funded two collection sites, in Tillamook and Pacific City.

“Over the last year-and-a-half, it’s been an issue that’s been raising in prominence along the coastline,” said Lisa Phipps, executive director of the partnership. “In our area, there have been groups that have been coming together to talk about what is happening in the ocean.”

And fund-raising is underway for two more sites, in Newport and Winchester Bay.

Altogether about 30 sites, from Alaska to Baja, Calif., have been funded, said Ken Buesseler, a chemical oceanographer at the Woods Hole Oceanographic Institution who put together the project, called “How Radioactive is Our Ocean?”

It uses crowd-sourced money and volunteers to collect water samples along the Pacific Coast, then ship them to Buesseler in Massachusetts to be analyzed on an $80,000 instrument………

Buesseler is looking for increased levels of Cesium-137, which already is in all oceans from previous nuclear testing and accidents; and for Cesium-134, a “fingerprint” of Fukushima.

Because of its short, two-year half-life, any Cesium-134 could only have come from the plant, he said.

So far, Buesseler said, no samples have indicated that the plume has reached the West Coast.

Buesseler posts results on the project’s website. They show Cesium-134 and increased levels of Cesium-137 off the coast of Japan and across the ocean.

“We know it’s out there,” Buesseler said. “We’ve seen it more than halfway across the Pacific.”

Northwest of Hawaii, for example, Buesseler has found Cesium-134 at concentrations as high as 3.8 becquerels per cubic meter.

But to put that in context, he said, the U.S. drinking water limit is 7,400 of those units.

“Every additional radiation exposure causes additional risks for cancer,” he said. “But when the numbers are in the one to 10 range, that’s a very small additional risk.”

That’s the range that is expected to hit our shores, with lower levels coming first.

“As the contamination arrives, we expect the concentrations to go up over the next two years,” Buesseler said……..http://www.statesmanjournal.com/story/tech/science/environment/2014/06/25/fukushima-radiation-concerns-coastal-communities/11377463/

June 26, 2014 - Posted by Christina MacPherson | oceans, Reference, USA