Abstract: A portable system (8) for handling gases when treating a surface within an interior space of an object. The object has one or more openings (20a, 22) that can be used as an inlet opening (26) and one or more openings that can be used as an outlet opening (28). The portable system includes a seal assembly (30) configured to substantially seal the outlet opening and an evacuation unit connected to the seal assembly. The seal assembly has the capability of being moved to the object. The evacuation unit (44) is configured to establish a flow of gases within the interior space of the object. The evacuation unit has the capability of being moved to the object. The flow of gases within the interior space of the object substantially removes particulates and/or volatiles from the interior space. The portable system also includes a filtering unit (50) which is configured to treat the gases. The filtering unit has the capability of being moved to the object.