Cal. Health & Safety Code § 107115
(a) A person seeking to participate in on-the-job training for purposes of paragraph (1) of subdivision (a) of Section 106976, or clause (i) of subparagraph (A) of paragraph (4) of subdivision (d) of Section 107155, shall, prior to his or her participation, do both of the following:
(b) The application shall contain all of the following information:
(5) A letter from each facility where the applicant will perform the activities described in Section 106976 or 107155, as applicable. The letter shall be on facility letterhead that identifies the facility and its mailing and physical addresses, and shall include all of the following information:
(7)
(c)
(3)