Examples are groundwater , surface water , subsurface soil , and leachate . A source that is not associated with a specific point and is generally unmeasureable. Reports of poundage are based on estimates. Examples include a conveyor belt carrying raw materials or the dirt road network within a facility. Defines what the waste is.
Most wastes have more than one code.
Some wastes are only reported as the most elementary classes, causing difficulty in determininf waste hazardousness. Important information from these source documents has been abstracted into the Agency's HazDat database, and new information is added on a continous basis. The information provided in Internet HazDat will be expanded and updatd at regular intervals. Air emissions can take the form of particulate matter or liquids. Local rainfall and run-off patterns may be important for determining those neighboring populations which are most at risk.