CA Govt Code § 126 (2021)
2021 California Code|Government Code - GOV|TITLE 1 - GENERAL|DIVISION 1 - SOVEREIGNTY AND PEOPLE OF THE STATE|CHAPTER 1 - Sovereignty of the State|ARTICLE 2 - Territorial Jurisdiction|Section 126.

126.  (a) Notwithstanding any other provision of law, general or special, the Legislature of California, acting through the State Lands Commission, hereby cedes concurrent criminal jurisdiction to the United States within lands identified and held by the United States upon and subject to each and all of the following express limitations, conditions, and reservations, in addition to any other limitations, conditions, or reservations prescribed by law:(1) Before making a cession, the State Lands Commission shall make the following findings: (A) The United States has requested in writing the state to cede concurrent criminal jurisdiction within the identified lands. (B) The lands are held by the United States for the erection of forts, magazines, arsenals, dockyards, and other needful buildings within the purview of clause 17 of Section 8 of Article I of the United States Constitution, or for any other federal purposes. For purposes of this section, lands held by the United States are defined as: (i) lands acquired in fee by purchase or condemnation, (ii) lands owned by the United States that are included in the military reservation by presidential proclamation or act of Congress, (iii) any other lands owned by the United States, including, but not limited to, public domain lands that are held for a public purpose, and (iv) leaseholds acquired by the United States over private lands or state-owned lands that are held for a public purpose. (C) The cession is made pursuant to and in compliance with the laws of the United States. (D) A notice of the proposed cession has been given to the clerk for the board of supervisors of the county in which the federal lands are located at least 15 days before the proposed cession. (E) The proposed cession is in the best interests of the State of California. (F) The United States has agreed to bear all costs and expenses incurred by the State Lands Commission in making the cession. (2) The cession shall continue only so long as the lands are owned by the United States and used for the purposes for which jurisdiction is ceded or for 10 years, whichever period is less. (3) The cession shall be made at a publicly noticed meeting of the State Lands Commission. The cession shall vest when the State Lands Commission has received notice of the United States’ acceptance of the cession and certified copies of the State Lands Commission’s orders or resolutions making the findings described in paragraph (1) have been recorded in the office of the county recorder of each county in which any part of the land is situated. The State Lands Commission shall keep copies of its orders or resolutions in its records and make them available to the public upon request. (b) In ceding concurrent criminal jurisdiction, the Legislature and the state reserve jurisdiction over the land, water, and use of water with full power to control and regulate the acquisition, use, control, and distribution of water with respect to the land affected by the cession. (Amended by Stats. 2014, Ch. 512, Sec. 1. (AB 2764) Effective January 1, 2015.)