Benzene is a known carcinogen. TLV-TWA and TLV-STEL of benzene are 0.5 ppm and 2.5 ppm, respectively. In a room of dimension 4m x 5m x10m a vapor concentration of 2.5 ppm (TLV-STEL) at 25C and 1 atm pressure? You may use the following physical property data for benzene: molecular weight, 78.11; and specific gravity, 0.877. If the room were used as workspace, as safety professional what would be your observations?