1-2. Is the form (e.g., solid, sludge, liquid, or gas) of a waste important in deciding if it is
hazardous?
The form is not important from a strictly legal sense because it does not provide any information about
the character of a waste that cause it to be harmful to human health or the environment. As discussed in Chaps 4 and 14, form is important in determining the mobility of waste constituents, one of the factors in
determining risk. [See also p. 2]