” A citizens group said it measured high radiation levels at candidate venues for the 2020 Tokyo Olympics, but the metropolitan government disputes the data and the International Olympic Committee has shown little interest.
The group said some of the potential venues for the Summer Games had radiation levels exceeding the Tokyo metropolitan government’s standards for decontamination: 0.23 microsievert per hour 1 meter above ground or a hot spot that measures at least 1 microsievert per hour higher than the surrounding areas.
The site with the highest airborne radiation level was Yumenoshima Stadium in Tokyo’s Koto Ward. Located within Yumenoshima Park, the site has a nearby canal where yachts are anchored.
For the 2020 Games, the stadium and the 12 adjacent baseball fields will be plowed over. Facilities are planned there for equestrian events, such as dressage and jumping.
Group members said a reading of 0.484 microsievert per hour was detected 5 centimeters above ground in shrubs next to an entrance on the southern side of the stadium. They said they did not know why such a high reading was found. … ”
Japan Safety : Nuclear Energy Updates 