The presence of CO in an auto park implies that other harmful fumes (e.g. benzene) will also be current. Because of this, the German authorities have lowered the limits for CO in vehicle parking facilities from 100 ppm to 50-60 ppm, dependant upon the federal point out in query. By https://basementventilation13344.snack-blog.com/36463955/not-known-facts-about-basement-ventilation