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

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. (

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. (

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. (

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. (

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. (

f) Require governmental agencies at all levels to develop standards and procedures necessary to protect environmental quality. (

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.