(1) A substantial portion of public funds allocated for the project have not been spent, and it is still feasible to modify the project to mitigate potentially adverse environmental effects, or to choose feasible alternatives to the project, including the alternative of “no project” or halting the project; provided that a project subject to the National Environmental Policy Act (NEPA) shall be exempt from CEQA as an on-going project if, under regulations promulgated under NEPA, the project would be too far advanced as of January 1, 1970, to require preparation of an EIS.

(2) A public agency proposes to modify the project in such a way that the project might have a new significant effect on the environment.

(1) CEQA does not prohibit a public agency from considering environmental factors in connection with the approval or disapproval of a project, or from imposing reasonable fees on the appropriate private person or entity for preparing an environmental report under authority other than CEQA. Local agencies may require environmental reports for projects covered by this paragraph pursuant to local ordinances during this interim period.

(2) Where a project was approved prior to December 5, 1972, and prior to that date the project was legally challenged for noncompliance with CEQA, the project shall be bound by special rules set forth in Section 21170 of CEQA.

(3) Where a private project has been granted a discretionary governmental approval for part of the project before April 5, 1973, and another or additional discretionary governmental approvals after April 5, 1973, the project shall be subject to CEQA only if the approval or approvals after April 5, 1973, involve a greater degree of responsibility or control over the project as a whole than did the approval or approvals prior to that date.