What is acceptable as a second proof of residency?

For all pistol purchases in California, state law requires the purchaser provide a second proof of residency listed here (http://oag.ca.gov/firearms/resprf).

Per the BATF, if the purchaser’s address on their ID does not match their address stated on the 4473, we need a document issued by a government entity, dated within the last 90 days and showing their current address, in order to satisfy the requirements of the ATF.