The presence of CO in a car park implies that other hazardous fumes (e.g. benzene) can also be existing. Due to this, the German authorities have reduced the bounds for CO in auto parking facilities from a hundred ppm to fifty-sixty ppm, dependant upon the federal condition in issue. Another https://basementventilation68900.vblogetin.com/42427080/the-2-minute-rule-for-car-park-ventilation