California Code, Business and Professions Code - BPC § 8730

(a) Officers and employees of the United States of America, practicing solely as those officers or employees, except when surveying the exterior boundaries of federal lands in this state.

(b) Insofar as he or she acts in the following capacity:

(c) Any officer or employee of an electric, gas, or telephone corporation, as defined in Sections 218, 222, and 234, respectively, of the Public Utilities Code, with annual revenues of twenty-five million dollars ($25,000,000) or more, whenever he or she prepares a legal description of an easement for utility distribution lines and service facilities, provided the following conditions are met:

(d) Any state, county, city, or city and county public safety employee investigating any crime or infraction for the purpose of determining or prosecuting a crime or infraction.  This exemption shall not permit a public safety employee to offer or perform land surveying as defined in Section 8726 for any purpose other than determining or prosecuting a crime or infraction.