Absorption of chemicals into plant material or uptake generally is more of a concern with heavy metals contamination. VC and other VOCs do not readily absorb into plant matter, either through respiration or through the root structure. In fact, the use of phytoremediation is quite useful for shallow soil metal contamination as certain trees will clean the soil quite effectively. In those cases, the plant material itself is treated as potentially hazardous and is tested as such. Depending on the concentration in the plant material it may be deposited into a hazardous waste landfill or normal landfill but in most cases it is never burned.