Thursday 28 November 2013

The 2011 Radioactive Plume

When I looked for the original article I found that it has disappeared from the Net, so I am reproducing this for the historical record

Radioactive Plutonium And Strontium From Fukushima Bombarding US West Coast Since March 18th (EPA RADnet Reports)


24 April, 2011

EPA RADnet Reports Show Plutonium in US since March 18th

We found a more complete RADnet dataset for various radioactive isotopes we had previously not encountered.
[...]
Recently while searching the EPA RADnet database for radiation reports, we found a link to the main database.  It included the RADNet monitoring data  for many isotopes not released in the public reports.
Notice that:
  • RADnet began monitoring for Plutonium from Day 1
  • Plutonium was found from Alaska. to San Francisco California. and down into Guam from 03/18/2011
  • Strontium was detected in the United States on 03/18/2011
  • Isotopes found not released in public reports Plutonium, Strontium and Cesium
  • What do the negative values mean in the results column?

Plutonium Results

Update 12:01 EST April, 22nd 2011
Here are the results for Plutonium.
All results were detected by actinides extraction chromatography as part of either the RadNet Radiation Network Alert or the Fukushima deployables.
To fit the data on the web page I have moved some redundant columns .
I removed the half-life column which the EPA results report as 24131 years for Plutonium-239 and for 87.75 years for Plutonium-238.
I have also removed the unit column as all amounts reported are pCi/m3 or picocuries per cubic meter.
CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
GUAM GU 3/19/2011 3/31/2011 Plutonium-239 0.000012
SAIPAN CNMI 3/21/2011 3/31/2011 Plutonium-239 0.000009
SAN FRANCISCO CA 3/18/2011 3/24/2011 Plutonium-239 0.0000065
NOME AK 3/20/2011 3/31/2011 Plutonium-238 0.0000035
SEATTLE WA 3/18/2011 3/24/2011 Plutonium-238 0.0000025
RIVERSIDE CA 3/15/2011 3/24/2011 Plutonium-238 0.0000013
RIVERSIDE CA 3/15/2011 3/24/2011 Plutonium-239 0.0000013
SAIPAN CNMI 3/21/2011 3/31/2011 Plutonium-238 0
SAIPAN CNMI 3/24/2011 3/31/2011 Plutonium-239 0
NOME AK 3/20/2011 3/31/2011 Plutonium-239 0
SEATTLE WA 3/18/2011 3/24/2011 Plutonium-239 -0.0000013
ANAHEIM CA 3/15/2011 3/24/2011 Plutonium-239 -0.0000015
DUTCH HARBOR AK 3/19/2011 3/31/2011 Plutonium-239 -0.0000023
ANAHEIM CA 3/15/2011 3/24/2011 Plutonium-238 -0.000003
SAN FRANCISCO CA 3/18/2011 3/24/2011 Plutonium-238 -0.0000037
KAUAI HI 3/21/2011 3/31/2011 Plutonium-239 -0.0000043
DUTCH HARBOR AK 3/19/2011 3/31/2011 Plutonium-238 -0.0000069
SAIPAN CNMI 3/24/2011 3/31/2011 Plutonium-238 -0.000008
GUAM GU 3/19/2011 3/31/2011 Plutonium-238 -0.000008

Strontium Results

Update 1:07 EST April, 22nd 2011
Strontium-89 and 90 were detected in Environmental Matrices.
Again the half-life column has been removed to fit the data on this page. The EPA reports the half-life for the Strontium-89 is 50.55 years and the half-life for the Strontium-90 at 28.6 years.
All Strotium detections were from the RadNet Radiation Alert Network.
Agian all units reported are pCi/m3 or picocuries per cubic meter.
CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036
ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036

Cesium Results

Update 1:29 EST April, 22nd 2011
I will be posting the cesium results in 3 seperate tables – Air, Milk and Rain so the data can be fit here.
All Cesium samples were detected using Gamma Spectrometry.

Cesium Air Result

All units for cesium air samples are pCi/m3.
CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
NOME AK 3/24/2011 3/24/2011 Cesium-134 0.144 PCI/M3
NOME AK 3/24/2011 3/24/2011 Cesium-137 0.1261 PCI/M3
KAHUKU HI 3/21/2011 3/21/2011 Cesium-137 0.116 PCI/M3
NOME AK 3/24/2011 3/24/2011 Cesium-137 0.115 PCI/M3
KAHUKU HI 3/21/2011 3/21/2011 Cesium-134 0.0929 PCI/M3
KAHUKU HI 3/21/2011 3/21/2011 Cesium-137 0.0915 PCI/M3
DUTCH HARBOR AK 3/22/2011 3/22/2011 Cesium-137 0.0876 PCI/M3
KAUAI HI 3/21/2011 3/21/2011 Cesium-137 0.086 PCI/M3
KAUAI HI 3/21/2011 3/21/2011 Cesium-134 0.0788 PCI/M3
KAUAI HI 3/21/2011 3/21/2011 Cesium-137 0.0752 PCI/M3
DUTCH HARBOR AK 3/22/2011 3/22/2011 Cesium-134 0.072 PCI/M3
SAIPAN CNMI 3/21/2011 3/21/2011 Cesium-134 0.068 PCI/M3
DUTCH HARBOR AK 3/19/2011 3/19/2011 Cesium-137 0.0625 PCI/M3
BOISE ID 3/23/2011 3/23/2011 Cesium-137 0.0618 PCI/M3
LAS VEGAS NV 3/24/2011 3/24/2011 Cesium-137 0.058 PCI/M3
DUTCH HARBOR AK 3/22/2011 3/22/2011 Cesium-137 0.053 PCI/M3
DUTCH HARBOR AK 3/19/2011 3/19/2011 Cesium-137 0.053 PCI/M3
LAS VEGAS NV 3/21/2011 3/21/2011 Cesium-134 0.0516 PCI/M3
LAS VEGAS NV 3/21/2011 3/21/2011 Cesium-137 0.0477 PCI/M3


Cesium Milk Results

All amounts are pCi/L.
CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
HILO HI 4/4/2011 4/4/2011 Cesium-134 24.3
HILO HI 4/4/2011 4/4/2011 Cesium-137 19.1
MONTPELIER VT 3/30/2011 3/30/2011 Cesium-137 1.91
RENO NV 4/4/2011 4/4/2011 Cesium-137
BUFFALO NY 4/1/2011 4/1/2011 Cesium-137
DOVER DE 4/1/2011 4/1/2011 Cesium-137
ATHENS TN 3/31/2011 3/31/2011 Cesium-137
CINCINNATI OH 3/31/2011 3/31/2011 Cesium-137
CLEVELAND OH 3/31/2011 3/31/2011 Cesium-137
KNOXVILLE TN 3/31/2011 3/31/2011 Cesium-137
PITTSBURGH PA 3/31/2011 3/31/2011 Cesium-137
RENO NV 3/31/2011 3/31/2011 Cesium-137
TRENTON NJ 3/31/2011 3/31/2011 Cesium-137
BALTIMORE MD 3/30/2011 3/30/2011 Cesium-137
CHARLESTON WV 3/30/2011 3/30/2011 Cesium-137
DALLAS TX 3/30/2011 3/30/2011 Cesium-137
JEFFERSON CITY MO 3/30/2011 3/30/2011 Cesium-137
LITTLE ROCK AR 3/30/2011 3/30/2011 Cesium-137
LOUISVILLE KY 3/30/2011 3/30/2011 Cesium-137


Cesium Rain

All amounts are pCi/L.
CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
BOISE ID 3/27/2011 3/27/2011 Cesium-134 42
BOISE ID 3/27/2011 3/27/2011 Cesium-137 36.4
BOISE ID 3/27/2011 3/27/2011 Cesium-137 35.6
BOISE ID 3/27/2011 3/27/2011 Cesium-134 34.3
BOISE ID 3/22/2011 3/22/2011 Cesium-137 11.6
BOISE ID 3/22/2011 3/22/2011 Cesium-134 11.2
OAK RIDGE/Y12 E TN 4/4/2011 4/4/2011 Cesium-137 2.1
JACKSONVILLE FL 3/31/2011 3/31/2011 Cesium-134 1.45
SALT LAKE CITY UT 3/28/2011 3/28/2011 Cesium-134 1.45
OAK RIDGE/Y12 E TN 3/31/2011 3/31/2011 Cesium-137 1.44
OAK RIDGE/MELTON TN 3/28/2011 3/28/2011 Cesium-137 1.42
OAK RIDGE/MELTON TN 3/28/2011 3/28/2011 Cesium-134 1.33
OAK RIDGE/Y12 E TN 3/31/2011 3/31/2011 Cesium-134 1.28
OAK RIDGE/K25 TN 3/31/2011 3/31/2011 Cesium-137 1.21
LANSING MI 4/4/2011 4/4/2011 Cesium-137 1.15
JACKSONVILLE FL 3/31/2011 3/31/2011 Cesium-137 1.09
SALT LAKE CITY UT 3/28/2011 3/28/2011 Cesium-137 1.09
OAK RIDGE/MELTON TN 3/31/2011 3/31/2011 Cesium-137 0.87
LITTLE ROCK AR 3/28/2011 3/28/2011 Cesium-137 0.6

Lucas has also put a Google spreadsheet of his EPA radnet search showing where Plutonium, Strontium, and Cesium have been detected online with all of the original columns from the EPA data.
I will update this post with a more user-friendly view of the EPA result data.
In the mean time, you can get to the EPA data yourself, though it is rather confusing.
  1. Then simply enter 3/11/2011 as the start date and today’s date as the end date.
  2. Scroll down click the radionuclides to include in the results, for example plutonium.
  3. Finally click search database to view the results or download to CSV to save the results on your PC.
Again h/t to Lucas for making the original discovery that the EPA had hidden this data from the public results they have been compiling.

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Radiation in Northwest US Rainwater from Fukushima



1 comment:

  1. From the RadNet Search User Guide: "A negative result occurs when random effects and limitations in the measurement process cause the measured value for the sample to be less than that of the laboratory blank or background, which is subtracted from the sample measurement. Although negative radioactivity is physically impossible, the inclusion of negative results allows better statistical analysis of the data."

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