§ 6-13 Programmatic Environmental Impact Statements.

   (a)   Whenever possible, agencies shall identify programs or categories of actions, particularly projects or plans which are wide in scope or implemented over a long time frame, which would most appropriately serve as the subject of a single EIS. Broad program statement, master or area wide statements, or statements from comprehensive plans are often appropriate to assess the environmental effects of the following;

      (1)   a number of separate actions in a given geographic area;

      (2)   a chain of contemplated actions;

      (3)   separate actions having generic or common impacts;

      (4)   programs or plans having wide application or restricting the range of future alternative policies or projects.

   (b)   No further EIS's need be prepared for actions which are included in a programmatic EIS prepared pursuant to subdivision (a) of this section. However:

      (1)   a programmatic EIS shall be amended or supplemented to reflect impacts which are not addressed or adequately analyzed in the EIS as originally prepared; and

      (2)   actions which significantly modify a plan or program which has been the subject of an EIS shall require a supplementary EIS;

      (3)   programmatic EIS's requiring amendment and actions requiring supplementary EIS's pursuant to this section shall be processed in full compliance with the requirements of this chapter.