Advises on how to test for the presence of PCBs in the building. The document recommends that the air is tested first to determine if PCBs may be causing a potential public health problem. This initial step may help prioritize the steps and/or approaches for the renovation or repair work. If a PCB problem is identified, it will need to be characterized to determine the extent of PCB contamination. It is important to note that even if PCBs are not present in the air, they still may be present in the caulk and/or other building materials.
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