На этих следах оборудованы площадки...

14:50 Dec 4, 2016 

14:49 Dec 4, 2016 

Not sure which aspect Simon found difficult; what I put in answer field is the part of the Kaz. gov. translation corresponding to what he wrote in question field.

На этих следах оборудованы площадки...
These contaminated areas have been rigged...
(Lit. On these residues test areas have been set up)

I think that "fitting" an "area" with equipment is not normal English wording, therefore was looking for how to say "set up as" a calibration reference point (test area), which is ~ what the Kaz. translation says.

I think "contaminated areas" is a good translation for "эти следы" in the prepositional phrase with "на"; otherwise, "следы" are normally called "residue" or "footprints."

Here's how a radiation testing co. describes two different calibration approaches. I think we have the first case.
"Tests involving contamination monitor response to levels of alpha or beta radiation are carried out using a range of large surface area traceable sources of radioactivity. ... Tests involving instrument response to specified radiation dose rates are carried out on a special calibration facility that allows the instrument to be exposed to a range of radiation dose equivalent values..."

12:33 Dec 4, 2016 

All due respect, but I don't think the Asker was having problems handling the "оборудованы площадки для калибровки" part.. Or was he? I think it's quite clear from the given excerpt that certain equipment, designed to calibrate (airborne?) radiometric devices (or whatever else purposes they had in mind) has been set up/installed/rigged/ within the area in question (where the "traces" were detected). Or, the area was fitted with certain equipment, which is just another way of saying the same thing, basically. I thought the problem for the Asker was whether to incorporate "следы" in the sentence (and, most importantly, how to incorporate, to make the sentence intelligible) or leave them out altogether.

12:16 Dec 4, 2016 

They use airplanes to monitor radioactive pollution. But on-board instruments cannot measure actual radiation levels on the ground and thus need to be calibrated with equipment installed in the polluted areas.

01:02 Dec 4, 2016 

*These* areas are fitted with equipment to calibrate radiometric devices. You can probably omit on these traces here, I think what they mean is that the areas where these traces were found are fitted with equipment.