J. Environ. Sci. Institute of Environmental Studies and Research – Ain Shams University Vol. 10, No.2, June 2005 (1) Salem, M. A. I. (2) Hewehy, M. A. I. (3) Ehtuish, F. E. and (4) Al Haddad, A. S. 1) Faculty of Science, Ain Shams University. 2) Institute of Environmental Studies and Research, Ain Shams University. 3) Faculty of Medicine, El-Fateh University (Libya). 4) Faculty of Science, Misurata University (Libya). ABSTRACT This study is considered as one of the most important and useful studies in the field of environmental impact assessment for industry in general and printing industry sector in particular. Also a few studies were carried out in the Arab world in this field but in Libyan Arabic Jamahiriya; this study may be the first. On the other hand, the present study aims to study and evaluate the environmental and health impact of indoor pollutants in some printing presses in Libya and how to mitigate it, then we chose three cities (Sirte, Misurata and Tripoli) and two presses in each city. In the present study the concentration of the following pollutants at indoor air of the studied presses were estimated: * Gaseous pollutants (CO, SO2, NO3 and O3), the results indicated that the concentration of SO2, NO2, and O3 are in higher levels than Maximum Allowable Concentration (MAC). * Volatile Organic pollutants (Benzene, Xylene, Methanol, Acetone and Carbon tetrachloride), the results of the measurements showed that the concentration of both benzene and carbon tetrachloride exceeded the MAC. * Dusts of Heavy Metals and Total Suspended Particulates (TSP), the results showed that all the above issues are more than MAC.