You can search government documents from California specifically using Google.  By including the "site" command in your search, you limit your search to a particular site or range of sites. For example:

• site:.ca.gov   (searches the California state government and many California county governments)
• site:.ca.us   (searches many California city websites)

There are exceptions to these rules for counties and cities. Your safest bet is to search site:.gov and include the name of the city in the search as well as your topic keywords.

For recent EIR reports, typically you can put in the relevant location name, EIR, and add site:.gov

For example: Philips 66 Santa Margarita EIR site:.gov