California Code, Public Utilities Code - PUC § 21676

(a) Each local agency whose general plan includes areas covered by an airport land use compatibility plan shall, by July 1, 1983, submit a copy of its plan or specific plans to the airport land use commission.  The commission shall determine by August 31, 1983, whether the plan or plans are consistent or inconsistent with the airport land use compatibility plan.  If the plan or plans are inconsistent with the airport land use compatibility plan, the local agency shall be notified and that local agency shall have another hearing to reconsider its airport land use compatibility plans.  The local agency may propose to overrule the commission after the hearing by a two-thirds vote of its governing body if it makes specific findings that the proposed action is consistent with the purposes of this article stated in Section 21670.  At least 45 days prior to the decision to overrule the commission, the local agency governing body shall provide the commission and the division a copy of the proposed decision and findings.  The commission and the division may provide comments to the local agency governing body within 30 days of receiving the proposed decision and findings.  If the commission or the division's comments are not available within this time limit, the local agency governing body may act without them.  The comments by the division or the commission are advisory to the local agency governing body.  The local agency governing body shall include comments from the commission and the division in the final record of any final decision to overrule the commission, which may only be adopted by a two-thirds vote of the governing body.

(b) Prior to the amendment of a general plan or specific plan, or the adoption or approval of a zoning ordinance or building regulation within the planning boundary established by the airport land use commission pursuant to Section 21675, the local agency shall first refer the proposed action to the commission.  If the commission determines that the proposed action is inconsistent with the commission's plan, the referring agency shall be notified.  The local agency may, after a public hearing, propose to overrule the commission by a two-thirds vote of its governing body if it makes specific findings that the proposed action is consistent with the purposes of this article stated in Section 21670.  At least 45 days prior to the decision to overrule the commission, the local agency governing body shall provide the commission and the division a copy of the proposed decision and findings.  The commission and the division may provide comments to the local agency governing body within 30 days of receiving the proposed decision and findings.  If the commission or the division's comments are not available within this time limit, the local agency governing body may act without them.  The comments by the division or the commission are advisory to the local agency governing body.  The local agency governing body shall include comments from the commission and the division in the public record of any final decision to overrule the commission, which may only be adopted by a two-thirds vote of the governing body.

(c) Each public agency owning any airport within the boundaries of an airport land use compatibility plan shall, prior to modification of its airport master plan, refer any proposed change to the airport land use commission.  If the commission determines that the proposed action is inconsistent with the commission's plan, the referring agency shall be notified.  The public agency may, after a public hearing, propose to overrule the commission by a two-thirds vote of its governing body if it makes specific findings that the proposed action is consistent with the purposes of this article stated in Section 21670.  At least 45 days prior to the decision to overrule the commission, the public agency governing body shall provide the commission and the division a copy of the proposed decision and findings.  The commission and the division may provide comments to the public agency governing body within 30 days of receiving the proposed decision and findings.  If the commission or the division's comments are not available within this time limit, the public agency governing body may act without them.  The comments by the division or the commission are advisory to the public agency governing body.  The public agency governing body shall include comments from the commission and the division in the final decision to overrule the commission, which may only be adopted by a two-thirds vote of the governing body.

(d) Each commission determination pursuant to subdivision (b) or (c) shall be made within 60 days from the date of referral of the proposed action.  If a commission fails to make the determination within that period, the proposed action shall be deemed consistent with the airport land use compatibility plan.