Cal. Code Regs. tit. 14 § 15162 : Natural Resources — Resources Agency — Guidelines for Implementation of the California Environmental Quality Act — Types of EIRs — Subsequent EIRs and Negative Declarations

(a) When an EIR has been certified or a negative declaration adopted for a project, no subsequent EIR shall be prepared for that project unless the lead agency determines, on the basis of substantial evidence in the light of the whole record, one or more of the following:
(1) Substantial changes are proposed in the project which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects;
(2) Substantial changes occur with respect to the circumstances under which the project is undertaken which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; or
(3) New information of substantial importance, which was not known and could not have been known with the exercise of reasonable diligence at the time the previous EIR was certified as complete or the negative declaration was adopted, shows any of the following:
(A) The project will have one or more significant effects not discussed in the previous EIR or negative declaration;
(B) Significant effects previously examined will be substantially more severe than shown in the previous EIR;
(C) Mitigation measures or alternatives previously found not to be feasible would in fact be feasible and would substantially reduce one or more significant effects of the project, but the project proponents decline to adopt the mitigation measure or alternative; or
(D) Mitigation measures or alternatives which are considerably different from those analyzed in the previous EIR would substantially reduce one or more significant effects on the environment, but the project proponents decline to adopt the mitigation measure or alternative.
(b) If changes to a project or its circumstances occur or new information becomes available after adoption of a negative declaration, the lead agency shall prepare a subsequent EIR if required under subdivision (a). Otherwise the lead agency shall determine whether to prepare a subsequent negative declaration, an addendum, or no further documentation.
(c) Once a project has been approved, the lead agency's role in project approval is completed, unless further discretionary approval on that project is required. Information appearing after an approval does not require reopening of that approval. If after the project is approved, any of the conditions described in subdivision (a) occurs, a subsequent EIR or negative declaration shall only be prepared by the public agency which grants the next discretionary approval for the project, if any. In this situation no other responsible agency shall grant an approval for the project until the subsequent EIR has been certified or subsequent negative declaration adopted.
(d) A subsequent EIR or subsequent negative declaration shall be given the same notice and public review as required under Section15087 or Section 15072. A subsequent EIR or negative declaration shall state where the previous document is available and can be reviewed.

Cal. Code Regs. Tit. 14, § 15162

Note: Authority cited: Section 21083, Public Resources Code. Reference: Section 21166, Public Resources Code; Bowman v. City of Petaluma (1986) 185 Cal.App.3d 1065; Benton v. Board of Supervisors (1991) 226 Cal.App.3d 1467; and Fort Mojave Indian Tribe v. California Department of Health Services et al. (1995) 38 Cal.App.4th 1574.

1. Amendment of section heading, text and Note filed 8-19-94; operative 9-19-94 (Register 94, No. 33).
2. Amendment of subsection (c) and Note filed 10-26-98; operative 10-26-98 pursuant to Public Resources Code section 21087 (Register 98, No. 44).
3. Change without regulatory effect amending subsections (b)-(c) and Note filed 10-6-2005 pursuant to section 100, title 1, California Code of Regulations (Register 2005, No. 40).