Radiation Levels in California
WASHINGTON – During a detailed analysis of four west coast RadNet air monitor filters, the U.S. Environmental Protection Agency (EPA) identified trace amounts of radioactive iodine, cesium, and tellurium consistent with the Japanese nuclear incident. These levels are consistent with the levels found by a Department of Energy monitor last week and are to be expected in the coming days.
EPA’s samples were captured by three monitors in California and one in Washington State on Friday, March 18 and sent to EPA scientists for detailed laboratory analysis. The data was reviewed over the weekend and the analysis was completed Monday night. The radiation levels detected on the filters from California and Washington monitors are hundreds of thousands to millions of times below levels of concern.
In addition, last night preliminary monitor results in Hawaii detected minuscule levels of an isotope that is also consistent with the Japanese nuclear incident. This detection varies from background and historical data in Hawaii. This isotope was detected at our fixed monitor in Hawaii, and it is far below any level of concern for human health. The sampling filter from this monitor is being sent to our national radiation lab for further analysis.
In a typical day, Americans receive doses of radiation from natural sources like rocks, bricks and the sun that are about 100,000 times higher than what we have detected coming from Japan. For example, the levels we’re seeing coming from Japan are 100,000 times lower than what you get from taking a roundtrip international flight.
EPA is in the process of conducting detailed filter analyses for fixed monitors located in Oregon.
EPA’s RadNet filter results for San Francisco, Seattle, Riverside and Anaheim, California detected minuscule quantities of iodine isotopes and other radioactive particles that pose no health concern at the detected levels. Below are the results of the detailed filter analysis. All of the radiation levels detected during the detailed filter analysis are hundreds of thousands to millions of times below levels of concern.
All units are in Picocuries per meter cubed.
- Filter results for Anaheim, Calif. found:
- Filter results for Riverside, Calif. found:
- Filter results for Seattle, Wash. found:
- Filter results for San Francisco, Calif. found:
EPA’s RadNet system is designed to protect the public by notifying scientists, in near real time, of elevated levels of radiation so they can determine whether protective action is required. In addition, an analysis of the filters in the monitors can identify even the smallest trace amounts of specific radioactive isotopes.
As part of the federal government’s continuing effort to make our activities and science transparent and available to the public, EPA will continue to keep RadNet data available at: http://www.epa.gov/japan2011/
Print This Article
Placer County News HeadlinesBig DoG Countdown: Placer Breast Cancer EndowmentBig DoG Countdown: Learn how Placer Breast Cancer Endowment impacts our community.
Free Seminar Targets Sexting, Child and Teen PornographyRoseville, CA -- Life Community Church is hosting a seminar entitled "Sexting and child and teen pornography.what's a parent to do?" on Sunday, April 27 from 2p.m. to 5 p.m. at its facilities, 10020 Foothills Blvd
Northern California Invitational Rugby Tournament On April 26 and 27, The Northern California Youth Rugby Association (NCYRA), in conjunction with Placer Valley Tourism, will host the 10th Annual Northern California Invitational Rugby Tournament
Roseville Crime Report Digest (4-24-14)The Roseville Police Department's crime report digest April 24, 2014.
The Great Banquet at Bayside Church May 17thJoni and Friends Sacramento will hold its annual special needs event called The Great Banquet at Bayside Church in Roseville on May 17. The free event will be a very special evening for people
Arrest in Rocklin $37K Embezzlement CaseFrederick Lacker is suspected of embezzling funds that had been entrusted to him for the daily operations of the non-profit organization.
Strategies for Move-up Home BuyersRoseville Realtor, Julie Jalone, writes about the growth of move-up buyers in the local real estate market and outlines some potential strategies and risks when selling a current home to buy a new one.
Big DoG Countdown: Gold Country Wildlife RescueBig DoG Countdown: Learn how Gold Country Wildlife Rescue impacts your community.
Placer County's Most Wanted: Christopher AcevedoRocklin, CA -- Placer County's Most Wanted highlights individuals being sought by police. 27 year old, Christopher Michael Acevedo, last known address of Rocklin, CA
Roseville Celebrate the Earth Festival 2014Enjoy free family fun at the 7th Annual Celebrate the Earth Festival from 10 a.m. to 3 p.m. on Saturday, April 26 at the Roseville Utility Exploration Center, 1501 Pleasant Grove Blvd., in Mahany Regional Park
Lumber Liquidators New Roseville Store on Fairway DriveWith the opening of its newest store at 9400 Fairway Drive Ste. 150, Lumber Liquidators has brought its low-cost, no-middleman flooring approach to Roseville
Get in Gear for May is Bike MonthIt's time to tune up your bikes and join your neighbors and coworkers in bicycling for work, school, errands, or recreation this May during the Sacramento region's annual May is Bike Month campaign.