Process Engineering Equipment Handbook

Waste management is a specialized science in itself and also has its own series of handbooks. However, if waste contaminates a site, it is possible that a process engineer may be held liable for the pollution, depending on whether mishaps in his or her plant's process caused it. For that reason, a definition of contaminated site classifications and a user's guide to classification of contaminated sites is included here.
Sites will not be ranked relative to one another. Sites will be classified on their individual characteristics and will be placed into classes (Class 1, 2, 3, or N, according to their priority for action, or Class I for sites that require further information before they can be classified). The classification groupings are as follows:
The available information indicates that action (e.g., further site characterization, risk management, remediation, etc.) is required to address existing concerns. Typically, Class 1 sites show a propensity to high concern for several factors, and measured or observed impacts have been documented.
The available information indicates that there is high potential for adverse off-site impacts, although the threat to human health and the environment is generally not imminent. There is probably no indication of off-site contamination; however, the potential for this was rated high and therefore some action is likely...