CCTV (Channel 17 in Burlington, Vermont), published Jun 20, 2016 (emphasis added):

• Margaret Harrington, host: I know you mentioned Arnie Gundersen, the chief engineer at Fairewinds, and he said that he measured the radiation there, too. Could you talk about that a little bit?
• Maggie Gundersen, Fairewinds Energy Education founder and CEO: He’s working with some other scientists who are studying — both Japanese scientists, the samples that they took, and the US scientists who are evaluating the samples — and they’re finding astronomical amounts of radiation, even in downtown Tokyo outside of METI’s door. METI is the regulatory agency over nuclear power… When he and others were downtown in Tokyo, they took samples right there in a garden right outside the door and on the front doormat, and these are really, really high samples. Frightening, because people walking in Tokyo will then be inhaling that dust. What was the film we saw from Japan that had the mothers who were in an area where kids play and run from middle school?
• Caroline Phillips, Fairewinds Energy Education: It’s a fantastic video… it’s a mothers organization, they live in the Fukushima Prefecture and they’re actually using Geiger counters that have been issued by the government. They’re walking along the river [in Fukushima City.]
• Maggie Gundersen: What’s so tragic about it – kids are running along dirt paths doing gym class and track and things like that and the mothers are right down in areas that are not posted and the kids can go after school and play, and people do nature hikes and stuff. And the radiation readings are horrific.

Gendai Business Online (article in Japanese here), Jun 14, 2016: [J]ust before the 5th anniversary of the triple meltdown at Fukushima Daiichi, a group of young girls in the city of Minami-Soma rode their bikes to school past a shocked and saddened pedestrian. That upset observer was Arnie Gundersen, nuclear reactor expert… “What surprised me at this visit to Japan… is that the decontaminated area is contaminated again,” Mr. Gundersen said while explaining why it was such as sad shock to witness the girls on their bicycles. “This was not what I had expected. I had thought that we would not find such high doses of radiation in the decontaminated area. But, sadly, our results prove otherwise.”… Gundersen collected samples of dust [though] the official data cannot be released before the publication of formal scientific papers, it is evident that high doses of radiation, usually found in nuclear waste, was detected from these samples. “This means that highly radioactive dust is flying around the city. In other words, the decontaminated land is contaminated again. Little girls are affected by the radiation 20 times as much as adult men. The Japanese government’s standard of 20 mSv is based on exposure assessments for adult men. The girls on their bicycles are actually being affected by a radiation dose equivalent to as much as 400 mSv.” Mr. Gundersen also pointed out that human lungs are heavily affected by internal exposures to radiation. “At this visit, I wore a radiation proof mask that can filter out 99.98% of radiation for six hours. I sent my filter to the lab, and they found a high dose of Cesium. But, unfortunately, the Japanese government only cares about the number on a Geiger counter and does not consider the internal exposure. This has resulted in a hazardous downplay of this kind of data and human lungs are affected by the serious internal exposure.”… [T]he radiation from the mountains are coming back to the city by way of wind and rain. Mr. Gundersen noted the extreme radioactive contamination of the mountains… vegetables grown in that area exceed the government’s standard by 1500 Bq. These vegetables were sold at the MichinoEki in Tochigi prefecture, and the bamboo shoot grown in this contaminated region was used for elementary school lunches in Utsunomiya. These school lunches contained more than twice as much radiation as the government’s standard… However, the government continues to push for the end of people’s relocation and force the return to recontaminated areas… Mr. Gundersen also found that Tokyo remains contaminated. He measured dust… and found a high dose of radiation. That dust is in the air that will be inhaled by the visitors and athletes of the 2020 Olympic Games. Needless to say, the current residents are inhaling it every day…

Watch the CCTV Channel 17 interview here