It was found, for all VOCs of interest, that toluene concentrations are the highest at all environments, followed by mp-xylene, and finally, o-xylene. However, in no case did the measurements exceed the international safety NIOSH and/or OSHA norms. Micro-environmental benzene concentrations are 3–9-fold higher as compared to the mean mp-xylene concentrations, which are, in all cases, two to three-fold higher than the o-xylene ones.