3. Type of impact assessment statements: A preliminary impact assessment statement on the environment and social milieu referred to in sections 158 to 163 of the Act evaluates, with the help of existing data and information obtained through exploration work or analysis, the alternatives for the site of a project and provides the required information to legislate with respect to the necessity of presenting a detailed analysis of the accepted solution and the nature of such a statement.
A detailed impact assessment statement of the environment and social milieu referred to in sections 158 to 163 of the Act evaluates, through an advanced knowledge of the natural and social milieu, all the effects of the accepted project on the environment and social milieu.
R.R.Q., 1981, c. Q-2, r. 11, s. 3.