#Radioactive Sludge by Children's Swimming Pool, Again, in Kawasaki City, Kanagawa

(UPDATE) According to Kanagawa Shinbun (8/26/2011), the radiation measurement of the sludge was: 1.70 microsievert/hour at 5 centimeters off the sludge, 0.42 microsievert/hour at 50 centimeters, and 0.21 microsievert/hour at 100 centimeters.)



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16,500 becquerels/kg of radioactive cesium, and the park officials and the Kawasaki City government are at a loss what to do. They don't know where it came from, they don't know what to do with it.



On August 18, the sludge by the swimming pool in Hirama Park in Kawasaki City was also found with 12,400 becquerels/kg of radioactive cesium (see my post here). The air radiation level near the compost was 0.90 microsievert/hour.



From Tokyo Shinbun Kanagawa Local version (8/26/2011):

高い空間放射線量の影響で、川崎市中原区の平間公園に続き、市営プールの利用が中止になった多摩区の稲田公園。市民らは身近な放射能汚染に驚き、調査に訪れた市職員は途方に暮れた。



Following Hirama Park in Nakahara-ku, Inada Park in Tama-ku in Kawasaki City has also shut down the swimming pool because of the high air radiation level. Residents are surprised at the radiation contamination in their neighborhood, and the city officials are at a loss what to do.



　国が汚泥処理の目安にしているのが一キログラム当たり八〇〇〇ベクレル。その二倍以上の同一万六五〇〇ベクレルが、夏休みに一日当たり約二百人もの子どもたちが遊びに来ていたプールの入り口脇で、検出された。



The national safety limit for radioactive sludge is 8,000 becquerels/kg for disposal. But 16,500 becquerels/kg of radioactive cesium, more than twice the national limit, was detected in the sludge near the swimming pool entrance. The swimming pool is used by about 200 children per day during the summer break.



　堆積していた汚泥は布や紙が交じり、多摩区道路公園センター整備課によると、出所は不明。市で公園の清掃などを委託している業者やプールの職員も「知らない」と話しており、プールから出た可能性は低いという。



Some cloth and paper were found mixed in the sludge, and the Tama-ku center for roads and parks says it doesn't know where the sludge came from. Cleaning contractor who cleans the parks and the pool staff say they don't know either. It is unlikely that the sludge was from the swimming pool, according to the officials.



　稲田公園の空間放射線量を自主的に測定していた市民グループ「ピース＆スマイルプロジェクト川崎」の男性は「自分の子どもが公園やプールに来るので周囲を何箇所か測ったら、基準値をはるかに超えた値が出た」と驚いていた。「市も測定してくれているが、枯れ葉のある場所に絞っていて、稲田公園は対象ではなかった。今後は対象範囲を広げてほしい」と話す。



A citizens' group called "Peace and Smile Project Kawasaki" has been measuring the air radiation levels in Inada Park. One member says he was surprised. "My child comes to this park and use the swimming pool, so I measured several locations and found very high radiation far exceeding the normal level." He also says, "Kawasaki City is also measuring radiation, but the city is focused on locations with fallen leaves, and Inada Park was not included. I hope they measure more locations from now on."



　空間放射線量を測定していた市職員の一人は「原因は落ち葉だと思っていたが、落ち葉でなかったことになると、どこまで調べればいいのか。あまりに想定外のことに戸惑っているし、範囲を広げれば日常業務に支障が出る。正直、測定は国がやってほしい」と頭を抱えていた。



One of the city officials who were measuring the air radiation at the site was totally at a loss. "We thought [the high radiation] was caused by fallen leaves. But it wasn't the fallen leaves. How much more should we investigate? We're confused because this is so beyond our expectation. If we expand the survey to many more locations, our regular daily work will be affected. To be honest, we would like the national government to do the survey".

The radioactive sludge at both parks were found by this volunteer group "Peace and Smile Project Kawasaki". Looking at their tweets on the Hirama Park sludge, the group has had such a struggle with the bureaucracy at the city offices and the Board of Education in Kawasaki City, who would rather not know about anything like highly radioactive sludge in the park. At one point, it seems the city was just going to have the sludge removed by a contractor and have it disposed as regular waste.



The word of the year in Japan for 2011 must be "想定外(soh-tei-gai)" - beyond expectation, unforeseen. From Kawasaki City officials to TEPCO officials to the national government ministers, it has been one big "beyond expectation" ever since March 11. (At least so they say.)

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High Radiation Right Next to Children's Swimming Pool in Kawasaki City

The government authorities, whether national or municipal, say they've been measuring the radiation at parks and schools where children go, but they've been criticized for picking the least contaminated locations to measure.



Here's a case in Kawasaki City, where a citizens' group measured on their own, found a high radiation location in a park that the city said it had measured, and alerted the city about the highly radioactive dirt right next to the swimming pool that children are using since early July.



From Kanagawa Shinbun local site (8/18/2011):

　川崎市は18日、同市中原区上平間の平間公園内にある児童プール脇で放射線量を測定し、文部科学省の目標値（１時間当たり０・19マイクロシーベルト以下）を大幅に上回る０・90マイクロシーベルトを計測した。県危機管理対策課によると、県内で計測された大気中の放射線量としては最高値という。



Kawasaki City announced it measured 0.90 microsievert/hour at the side of the swimming pool in Hirama Park in Kamihirama, Nakahara-ku (special ward), exceeding the target level of 0.19 microsievert/hour set by the Ministry of Education and Science. According to the [Kanagawa] prefectural crisis management division, it is the highest level of air radiation measured in Kanagawa.



　市が同所で土などを採取して測定したところ、１キログラム当たり１万２４００ベクレルの放射性セシウムを検出したため、19日からプールの利用を一時中止することを決めた。



The city collected the dirt from the location to have it analyzed, and 12,400 becquerels/kg of radioactive cesium was found. The city has decided to close the swimming pool temporarily, starting August 19.



政府は下水道処理施設などの汚泥について８千ベクレル以下であれば埋め立て可能としている。市はブルーシートなどで飛散防止を図るとともに、専門家と相談しながら撤去方法などを検討する方針だ。



The national government allows sewer sludge to be buried as long as the amount of radioactive materials is 8,000 becquerels/kg and lower. The city has put the plastic tarp over the dirt, and will decide how to dispose the radioactive dirt after consulting with the experts.



　　高い放射線量が計測されたのは、プール利用者の更衣室などがある管理棟のすぐ横で、フェンスの向こうはプールサイド。市公園管理課によると、日ごろから落ち葉などを集積する場所になっており、プール開き前の７月７日に実施したプール清掃後も、落ち葉や土などを広さ約15平方メートルのスペースに置いていた。



The location where the high radiation was measured is right next to the building in which the dressing rooms for the swimming pool users are located. The poolside is just beyond the fence nearby. According to the park management, the area is used to store collected leaves. After cleaning the pool on July 7 to prepare for the pool opening, the leaves and dirt were stored in the 15 square-meter area.



　市民有志でつくる「ピース・アンド・スマイル・プロジェクト・カワサキ」（須藤有紀代表）が今月14日、この場所で土の表面などを測定した際、地上５センチで０・50マイクロシーベルトを計測したため、市に連絡。市も調査を始めた。15日の調査では０・66マイクロシーベルト（地上５センチ）、18日の調査では０・90マイクロシーベルト（同）を計測した。ただ、プールの入り口付近やプールサイドでは、いずれも目標値を下回った。



The citizen volunteer group "Peace and Smile Project Kawasaki" measured the near-surface radiation in this area on August 14, which measured 0.50 microsievert/hour at 5 centimeters off the ground. The group alerted the city. When the city measured the same area on August 15, it was 0.66 microsievert/hour (5 centimeters off the ground), and it was 0.90 microsievert/hour on August 18. The radiation levels at the pool entrance and the pool side were below the target level.



　市公園管理課は「この場所の放射線量が高い原因は分からない」としている。



The park management says, "We don't know why the radiation is so high in this area".



　市は６月に市内の公園や学校など４４７カ所で放射線量を測定したが、最高値は０・17マイクロシーベルトで、いずれも目標値を下回っていた。



Kawasaki City measured the radiation levels at 447 locations including parks and schools in June, but they were all below the target level [of 0.19 microsievert/hour]; the maximum level measured was 0.17 microsievert/hour.

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