Yellow Pages |   News Updates |   Local Jobs |   Events Calendar |   Movie Times | Recycling
Rocklin and Roseville Today Local Events
contact add event advertise 

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:
            Cesium-137: 0.0017
            Tellurium-132: 0.012
            Iodine-132: 0.0095
            Iodine-131: 0.046

- Filter results for Riverside, Calif. found:
            Cesium-137: 0.00024
            Tellurium-132: 0.0014
            Iodine-132: 0.0015
            Iodine-131: 0.011
- Filter results for Seattle, Wash. found:
            Cesium-137: 0.00045
            Tellurium-132: 0.0034
            Iodine-132: 0.0029
            Iodine-131: 0.013

- Filter results for San Francisco, Calif. found:
            Cesium-137: 0.0013
            Tellurium-132: 0.0075
            Iodine-132: 0.0066
            Iodine-131: 0.068

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/





Placer County News Headlines

Roseville Crime Report Digest Update (8.28.15)Roseville, CA - Weekly crime report update digest summary for Roseville, August 28, 2015.

California Water Use Drops over 31 Percent in JulyDrought Watch: Despite continued hot conditions, Californians surpassed June's conservation rate and reduced water use by 31.3 percent during July, exceeding Governor Edmund G. Brown Jr.'s 25 percent

California Fire Update Summary (8-27-15)California Fire Updates 2015:Over 9,000 firefighters are battling 16 active wildfires across California. Warmer weather over the past couple of days has hampered containment efforts

Roseville Optometry Business BurglarizedRoseville Police asking for the public's help identifying the two people in these surveillance pictures.

Teacher Arrested for Child Pornography DistributionA Nevada County teacher was arrested for distribution of child pornography. Ethan Lewis, 32, was booked into the Nevada County Jail after turning himself in.

Lake Tahoe: Labor Day Weekend Events and BeyondTahoe South's late-summer of festivals, music, homegrown food and fireworks will ride the hot August wave of indoor and outdoor adventures now through Labor Day

Roseville Ranked #51 for Female Entrepreneurs to Launch BusinessThe city of Roseville, CA was ranked #51 in a new report by data-science group GoodCall as one of the best cities in the U.S. for women entrepreneurs to launch their business.

Mentoring Success Story: Child Advocates of Placer CountyTwo years ago, 17-year-old Nicole had no drive in her life."I was really depressed, but my mom was good at finding resources for me," Nicole says

Johnny Cash Trail Art Experience Master Plan ApprovedThe Folsom City Council unanimously approved a master plan for the Johnny Cash Trail Art Experience

William Jessup University Begins Fall SemesterAt William Jessup University, the start of fall semester doesn't seem official until the annual group photo is taken.

Dominick Casey appointed Roseville Assistant City ManagerRoseville, CA - Acting Roseville City Manager Rob Jenson today appointed Dominick Casey as Assistant City Manager on a permanent basis.

Explosive Device at a Roseville Middle School: Police Seek InformationHomemade explosive devices safely disabled on Roseville middle school campus; no injuries reported.


NEWS: In Case You Missed It