Rice from 5 Fukushima farms shows high radiation levels (Japan Today, Nov 26) | More Fukushima rice tainted with cesium (NHK, November 25)

Fukushima Prefecture says it has found rice tainted with radioactive cesium above the tentative government limit from five more farms.
The prefecture said on Friday that the five farms are in the Oonami district of Fukushima City, about 56 kilometers from the Fukushima Daiichi nuclear power plant.
The highest level of cesium detected was 1,270 becquerels per kilogram. The government’s maximum allowable level is 500 becquerels per kilogram.
Earlier this month, the prefectural government found rice samples from a field in the district also containing radioactive cesium above the limit.
Shipments of rice harvested from the area have been suspended by central government since last Thursday.
Fukushima Prefecture subsequently ordered tests on rice samples from all 154 farms in the Oonami district.

Cesium from nuke plant spread along mountains (NHK, November 25, 2011)

An aerial survey has shown that radioactive cesium from the Fukushima nuclear disaster has accumulated along the mountains of eastern Japan.
Japan’s science ministry released on Friday the results of the helicopter survey, covering 22 prefectures in eastern and central Japan.
The results are indicated in a colored map showing varying levels of cesium in soil. The radioactive substance has a long half-life, and is likely to affect the environment for decades.
Areas immediately northwest and south of the nuclear plant are indicated in red and yellow. This shows they have the highest concentrations of cesium, at above one-million becquerels per square meter. Areas in blue, with concentrations of 30,000 becquerels or more, are seen spreading out toward Miyagi Prefecture — about 60 kilometers to the north, and to Gunma Prefecture — about 200 kilometers southwest. The pattern appears to correspond to the location of mountain ranges in the region. In one of the routes of contamination, clouds carrying the radioactive substance apparently hit a mountain range northeast of the plant, before being carried by the wind to peaks far north of Tokyo. The science ministry says the mountains could have blocked the radioactive fallout from spreading further. The ministry plans to expand its aerial survey early next year, focusing on western Japan and the northernmost prefecture of Hokkaido.

Cesium levels hit tens of billions of becquerels at river mouth(Asahi, Nov 26)

Researchers have sounded the alarm over river water containing cesium levels at tens of billions of becquerels a day flowing into the sea near Fukushima Prefecture, site of the crippled nuclear power plant.

For more on this, see Enformable.com’s collated news extracts, see “River near Fukushima Daiichi found contaminated with over 50 Bq of Cesium a day” .

Earlier news:

Four cities and towns “dried shiitake mushrooms” exceed cesium limits (Minyu.net, November 23, 2011)

Four cities and towns have released the test results of cesium levels of “dried shiitake mushrooms” found in shiitake mushroom produced in ten cities and towns on the 22nd. Radioactive cesium exceeding the interim standard value (500 Bq per km) of a country was detected from five samples, Shirakawa, Nihommatsu, Motomiya, and Tanagura.

Cesium values of  1000-4900 Bq per kg detected from the samples.
According to the prefecture, the mushrooms have not been in circulation in the market.

From the Fukushima Diary blog: “Conjoined twins from a Fukushima mother” |  |  “50 locations exceeded mandatory decontamination limit in Arakawaku

Having measured 6.46 micro Sv/h at Shioiri elementary school in Arakawaku Tokyo, the ward government measured all the elementary schools, kindergarten, and nursery schools.

As a result, 50 of 82 locations turned out to be contaminated worse than0.23 micro Sv/h, which is the “decontamination limit”.

Even earlier news:

Cesium detected in air until August at 100 km from Fukushima plant (Asahi, Oct 18)

Radioactive cesium discharged from the Fukushima No. 1 nuclear power plant was detected some 100 kilometers from the stricken facility even until late August, research shows.

The finding was announced by a joint research team of the Geochemical Society of Japan, the Japan Geoscience Union and the Japan Society of Nuclear and Radiochemical Sciences.

The cesium concentration remained roughly constant at about 0.01 becquerel per cubic meter of air from June to August, but fell to 0.0001-0.0005 becquerel per cubic meter in late August and did not show up at all by the end of August.

Radioactive iodine, with a half-life of only 8 days, was detected only until July at a site 100 km from the plant used for measurements. No contamination was detected in August.

The study team conducted air measurements at 11 sites within 300 km of the Fukushima plant. It was scheduled to present its findings Oct. 18 at an atmospheric chemistry symposium in Uji, Kyoto Prefecture.

Mongolia imposes ban on import of Japanese vehicles radioactive materials detected from 18 sets of vehicles Translation of source: (Mainichi, November 24, 2011)
Ulan Bator — The nuclear energy office and the Ulan Bator customhouse office of the Mongolian government have decided to stop imports from Japan of cars which have not undergone radioactive material inspections from the 30th of this month.
When government authorities carried out the radioactive material inspection for all the cars imported from Japan in May and subsequently according to reliable sources, radioactivity was detected from 18 sets.
The [Japanese] Ministry of Foreign Affairs’ China and the Mongolian division is reportedly said to be checking on the situation with the Mongolian authorities.
According to their local news reports, radioactive materials were detected from the Japanese cars this month.