The Legislature further finds and declares that it is the policy of the state to:

1. (a) Develop and maintain a high-quality environment now and in the future, and take all action necessary to protect, rehabilitate, and enhance the environmental quality of the state.
2. (b) Take all action necessary to provide the people of this state with clean air and water, enjoyment of aesthetic, natural, scenic, and historic environmental qualities, and freedom from excessive noise.
3. (c) Prevent the elimination of fish or wildlife species due to man’s activities, insure that fish and wildlife populations do not drop below self-prepetuating levels, and preserve for future generations representations of all plant and animal communities and examples of the major periods of California history.
4. (d) Ensure that the long-term protection of the environment, consistent with the provision of a decent home and suitable living environment for every Californian, shall be the guiding criterion in public decisions.
5. (e) Create and maintain conditions under which man and nature can exist in productive harmony to fulfill the social and economic requirements of present and future generations.
6. (f) Require governmental agencies at all levels to develop standards and procedures necessary to protect environmental quality.
7. (g) Require governmental agencies at all levels to consider qualitative factors as well as economic and technical factors and long-term benefits and costs, in addition to short-term benefits and costs and to consider alternatives to proposed actions affecting the environment.