Is it necessary to calibrate sensors during the performance period even if the manufacturer’s recommended interval didn't pass yet?

I am working on a project (shopping mall) that will have revolving door as the mail entrance and it will be equipped with a permanent walk-off system.

Should retail spaces in a shopping mall have CO2 sensors? Does anyone know if shops are treated as densely occupied spaces?

Are CO2 sensors required in locker rooms? Loker rooms are non-regularly occupied spaces but they are also densely-occupied spaces.

We are considering options for innovation credits.

My reinforcing steel supplier, which is a global company, sent me an EPD that is based on the american products (it seems to be downloaded from their US webpage).

I have two questiones: 1.

In the school's kitchen we have one separate faucet for washing the dishes (it's not pre-rinse spray, but for full washing) and one for filling the pots.

My Client is renovationg a few floors of his office. The renovated floors would only contain canteen, gym and conference rooms without any permanent work stations.

My project site is located next to one of the main arteries of Warsaw. Due to the high trafic the strip adjacent to the road is contaminated with petrol related substances (not much but still).