RUSSIA
February 2020 - Moscow recorded a 60-fold excess of radiation levels in the area of the new highway. Ministry of Emergencies denies everything Evgenia Malyarenko, Natalya Telegin

Extracts:
Local residents and activists who are on duty on the slope of the Moscow River, where authorities are planning to build a new expressway - the Southeast Chord, recorded five surges in radiation over the past weekend in this area. They reported this to Open Media. The highest level - 18.06 microsievert per hour - the FSUE Radon sensor on the slope showed on the evening of February 9. The corresponding video on his Facebook page was published by the municipal deputy from the Pechatniki district Sergey Vlasov. He noted that the recorded indicators are 60 times higher than the norm.

A radiation repository in the construction area of ​​the new highway New Highway - the Southeast Chord, which, according to city authorities, should connect the Enthusiasts highway and the Warsaw highway, is being built in the south of the capital near the Kolomenskoye park. The project received wide publicity last summer, when activists found that the construction zone of the chord passes through a radioactive repository.

Comment:
Sixty times background is a very significant detection!
Quote:
"After that, the leadership of Radon arrived on the slope urgently, the parliamentarian said. Representatives of the enterprise suggested that such jumps were caused by "electrical interference", the deputy explained. Later, the director general of the Radon Federal State Unitary Enterprise Alexey Luzhetsky explained officially the failure of high radiation rates in the capital. “Since the sensor is still in setup mode, the readings may be confused."

Was the detection equipment malfunctioning?
This type of radiation detection equipment is already calibrated and tested, before it is located at a site.