Cal. Code Regs. tit. 14, § 15065
(a) A lead agency shall find that a project may have a significant effect on the environment and thereby require an EIR to be prepared for the project where there is substantial evidence, in light of the whole record, that any of the following conditions may occur:
(4) The environmental effects of a project will cause substantial adverse effects on human beings, either directly or indirectly.
(b)(1) Where, prior to the commencement of public review of an environmental document, a project proponent agrees to mitigation measures or project modifications that would avoid any significant effect on the environment specified by subdivision (a) or would mitigate the significant effect to a point where clearly no significant effect on the environment would occur, a lead agency need not prepare an environmental impact report solely because, without mitigation, the environmental effects at issue would have been significant.
(2) Furthermore, where a proposed project has the potential to substantially reduce the number or restrict the range of an endangered, rare or threatened species, the lead agency need not prepare an EIR solely because of such an effect, if:
(B) the state or federal agency approved the habitat conservation plan or natural community conservation plan in reliance on an environmental impact report or environmental impact statement; and
(C)1. such requirements avoid any net loss of habitat and net reduction in number of the affected species, or
(c) Following the decision to prepare an EIR, if a lead agency determines that any of the conditions specified by subdivision (a) will occur, such a determination shall apply to:
Note: Authority cited: Section 21083, Public Resources Code. Reference: Sections 21001(c) and 21083, Public Resources Code; San Joaquin Raptor/Wildlife Center v. County of Stanislaus (1996) 42 Cal.App.4th 608; Los Angeles Unified School District v. City of Los Angeles (1997) 58 Cal.App.4th 1019, 1024; and Communities for a Better Environment v. California Resources Agency (2002) 103 Cal.App.4th 98.
1. Amendment of subsection (a) and Note filed 5-27-97; operative 5-27-97 pursuant to Government Code section 11343.4(d) (Register 97, No. 22).
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. Amendment of section and Note filed 9-7-2004; operative 9-7-2004 pursuant to Public Resources Code section 21083(e) (Register 2004, No. 37).
4. Change without regulatory effect amending subsections (b)(1) and (c) and amending Note filed 10-6-2005 pursuant to section 100, title 1, California Code of Regulations (Register 2005, No. 40).
5. Amendment of subsection (b)(1) filed 2-16-2010; operative 3-18-2010 (Register 2010, No. 8).