When the Department has reason to believe that there is a release or substantial threat of release into the environment of any hazardous substance, the Department may: Add the location of the release or the threatened release to the State Master List of proposed sites; Assess risk to human health and the environment; Decide whether a response should be carried out under State superfund or other enforcement authority; Evaluate and perform or manage removal or remedial response actions; and Request assistance from the federal or local governments.