Cal. Health & Safety Code § 11361.8

(a) A person currently serving a sentence for a conviction, whether by trial or by open or negotiated plea, who would not have been guilty of an offense, or who would have been guilty of a lesser offense under the Control, Regulate and Tax Adult Use of Marijuana Act had that act been in effect at the time of the offense may petition for a recall or dismissal of sentence before the trial court that entered the judgment of conviction in their case to request resentencing or dismissal in accordance with Sections 11357, 11358, 11359, 11360, 11362.1, 11362.2, 11362.3, and 11362.4 as those sections have been amended or added by that act.
(b) Upon receiving a petition under subdivision (a), the court shall presume the petitioner satisfies the criteria in subdivision (a) unless the party opposing the petition proves by clear and convincing evidence that the petitioner does not satisfy the criteria. If the petitioner satisfies the criteria in subdivision (a), the court shall grant the petition to recall the sentence or dismiss the sentence because it is legally invalid unless the court determines that granting the petition would pose an unreasonable risk of danger to public safety.
1. (1) In exercising its discretion, the court may consider, but shall not be limited to evidence provided for in subdivision (b) of Section 1170.18 of the Penal Code.
2. (2) As used in this section, “unreasonable risk of danger to public safety” has the same meaning as provided in subdivision (c) of Section 1170.18 of the Penal Code.
(c) A person who is serving a sentence and is resentenced pursuant to subdivision (b) shall be given credit for any time already served and shall be subject to supervision for one year following completion of their time in custody or shall be subject to whatever supervision time they would have otherwise been subject to after release, whichever is shorter, unless the court, in its discretion, as part of its resentencing order, releases the person from supervision. Such person is subject to parole supervision under Section 3000.08 of the Penal Code or postrelease community supervision under subdivision (a) of Section 3451 of the Penal Code by the designated agency and the jurisdiction of the court in the county in which the offender is released or resides, or in which an alleged violation of supervision has occurred, for the purpose of hearing petitions to revoke supervision and impose a term of custody.
(d) Under no circumstances may resentencing under this section result in the imposition of a term longer than the original sentence, or the reinstatement of charges dismissed pursuant to a negotiated plea agreement.
(e) A person who has completed their sentence whether by trial or open or negotiated plea, who would not have been guilty of the conviction offense under the Control, Regulate and Tax Adult Use of Marijuana Act had that act been in effect at the time of the offense, may file an application before the trial court that entered the judgment of conviction in their case to have the conviction dismissed and sealed because the prior conviction is now legally invalid or redesignated as a misdemeanor or infraction in accordance with Sections 11357, 11358, 11359, 11360, 11362.1, 11362.2, 11362.3, and 11362.4 as those sections have been amended or added by that act.
(f) The court shall presume the petitioner satisfies the criteria in subdivision (e) unless the party opposing the application proves by clear and convincing evidence that the petitioner does not satisfy the criteria in subdivision (e). Once the applicant satisfies the criteria in subdivision (e), the court shall redesignate the conviction as a misdemeanor or infraction or dismiss and seal the conviction as legally invalid as now established under the Control, Regulate and Tax Adult Use of Marijuana Act.
(g) Unless requested by the applicant, no hearing is necessary to grant or deny an application filed under subdivision (e).
(h) Any felony conviction that is recalled and resentenced under subdivision (b) or designated as a misdemeanor or infraction under subdivision (f) shall be considered a misdemeanor or infraction for all purposes. Any misdemeanor conviction that is recalled and resentenced under subdivision (b) or designated as an infraction under subdivision (f) shall be considered an infraction for all purposes.
(i) If the court that originally sentenced the petitioner is not available, the presiding judge shall designate another judge to rule on the petition or application.
(j) Nothing in this section is intended to diminish or abrogate any rights or remedies otherwise available to the petitioner or applicant.
(k) Nothing in this and related sections is intended to diminish or abrogate the finality of judgments in any case not falling within the purview of the Control, Regulate and Tax Adult Use of Marijuana Act.
(l) A resentencing hearing ordered under the Control, Regulate and Tax Adult Use of Marijuana Act shall constitute a “post-conviction release proceeding” under paragraph (7) of subdivision (b) of Section 28 of Article I of the California Constitution (Marsy’s Law).
(m) The provisions of this section shall apply equally to juvenile delinquency adjudications and dispositions under Section 602 of the Welfare and Institutions Code if the juvenile would not have been guilty of an offense or would have been guilty of a lesser offense under the Control, Regulate and Tax Adult Use of Marijuana Act.
(n) The Judicial Council shall promulgate and make available all necessary forms to enable the filing of the petitions and applications provided in this section.