Cal. Pub. Res. Code § 21083

(a) The Office of Planning and Research shall prepare and develop proposed guidelines for the implementation of this division by public agencies. The guidelines shall include objectives and criteria for the orderly evaluation of projects and the preparation of environmental impact reports and negative declarations in a manner consistent with this division.
(b) The guidelines shall specifically include criteria for public agencies to follow in determining whether or not a proposed project may have a “significant effect on the environment.” The criteria shall require a finding that a project may have a “significant effect on the environment” if one or more of the following conditions exist:
1. (1) A proposed project has the potential to degrade the quality of the environment, curtail the range of the environment, or to achieve short-term, to the disadvantage of long-term, environmental goals.
2. (2) The possible effects of a project are individually limited but cumulatively considerable. As used in this paragraph, “cumulatively considerable” means that the incremental effects of an individual project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.
3. (3) The environmental effects of a project will cause substantial adverse effects on human beings, either directly or indirectly.
(c) The guidelines shall include procedures for determining the lead agency pursuant to Section 21165.
(d) The guidelines shall include criteria for public agencies to use in determining when a proposed project is of sufficient statewide, regional, or areawide environmental significance that a draft environmental impact report, a proposed negative declaration, or a proposed mitigated negative declaration shall be submitted to appropriate state agencies, through the State Clearinghouse, for review and comment prior to completion of the environmental impact report, negative declaration, or mitigated negative declaration.
(e) The Office of Planning and Research shall develop and prepare the proposed guidelines as soon as possible and shall transmit them immediately to the Secretary of the Resources Agency. The Secretary of the Resources Agency shall certify and adopt the guidelines pursuant to Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, which shall become effective upon the filing thereof. However, the guidelines shall not be adopted without compliance with Sections 11346.4, 11346.5, and 11346.8 of the Government Code.
(f) The Office of Planning and Research shall, at least once every two years, review the guidelines adopted pursuant to this section and shall recommend proposed changes or amendments to the Secretary of the Resources Agency. The Secretary of the Resources Agency shall certify and adopt guidelines, and any amendments thereto, at least once every two years, pursuant to Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, which shall become effective upon the filing thereof. However, guidelines may not be adopted or amended without compliance with Sections 11346.4, 11346.5, and 11346.8 of the Government Code.