Fish & G. Code, § 393

(a) A regularly employed law enforcement officer of an Oregon, Nevada, or Arizona state law enforcement agency, including, but not limited to, the Oregon State Police, the Nevada Department of Wildlife, or the Arizona Game and Fish Department, is a peace officer in this state, if all of the following conditions are met:

(1) The officer is providing, or attempting to provide, law enforcement services within this state, within a distance of up to 50 statute miles of the contiguous border of this state and the state employing the officer, or within waters offshore of this state in the Exclusive Economic Zone.

(2) The officer is providing, or attempting to provide, law enforcement services pursuant to either of the following:

(A) In response to a request for services initiated by a member of the department.

(B) In response to a reasonable belief that emergency law enforcement services are necessary for the preservation of life, and a request for services by a member of the department is impractical to obtain under the circumstances. In those situations, the officer shall obtain authorization as soon as practical.

(3) The officer is providing, or attempting to provide, law enforcement services for the purpose of assisting a member of the department in response to misdemeanor or felony criminal activity, pursuant to the authority of a peace officer as provided in subdivision (e) of Section 830.2 of the Penal Code, or, in the event of an emergency incident or other similar public safety problem, whether or not a member of the department is present at the scene of the event.

(4) An agreement pursuant to Section 392 is in effect between the department and the agency of the adjoining state employing the officer, the officer acts in accordance with that agreement, and the agreement specifies that the officer and employing agency of the adjoining state shall be subject to the same civil immunities and liabilities as a peace officer and his or her employing agency in this state.

(5) The officer receives no separate compensation from this state for providing law enforcement services within this state.

(6) The adjoining state employing the officer confers similar rights and authority upon a member of the department who renders assistance within that state.

(b) Notwithstanding any other provision of law, a person who is acting as a peace officer in this state in the manner described in this section shall be deemed to have met the requirements of Section 1031 of the Government Code and the selection and training standards of the Commission on Peace Officer Standards and Training, if the officer has completed the basic training required for peace officers in his or her state.

(c) A peace officer of an adjoining state shall not provide services within a California jurisdiction during a period in which officers of the department are involved in a labor dispute that results in a formal work slowdown or stoppage.