The Integrated Waste Management District runs this site that is loaded with great information on not only landfills but trash pickup for your local area and even household hazardous waste locations.
This site is full of great fire safety information. It focuses mostly on ways to protect those homes located near the wildland/urban interface areas. It also includes lists of publications, videos, and downloads that quite helpful to the homeowner.
The CDF site focuses more on larger fire and fire safety programs available in the state as well as other forestry related issues. This site is pretty good at providing a view of the overall California firefighting apparatus.
The CNPS hosts this site that is loaded with all sorts of great information on the native plants of California. It’s colorful and interesting with lots of great photographs. There is also some very cool educational stuff for kids.