Cal. Code Regs. tit. 2, § 2122 – Lease Operation Offshore. For all wells drilled from filled land or other drill sites or structure or structures located seaward of the ordinary high water mark, operations that may be conducted shall conform with the following:

(a) The lessee shall remove the derrick from each well within sixty (60) days after lessee has ceased making use of such derrick in its operations on and with respect to such well.
(b) In the discretion of the commission, all permanent operating sites shall be landscaped with shrubbery, or fenced, so as to screen from public view as far as possible the tanks, pumps or other permanent equipment.
Such landscaping and shrubbery, or fencing, are to be kept in good condition.
(c) Oil, tar, or other residuary products of oil, or any refuse of any kind from any well or works, shall be disposed of on shore in a dumping area in conformance with local regulatory requirements.
(d) Suitable and adequate sanitary toilet and washing facilities shall be installed and maintained in a clean and sanitary condition at all times for the use of lessee's personnel.
(e) All drilling and production operations shall be conducted in such manner as to eliminate as far as practicable dust, noise, vibration, or noxious odors.
(f) Pollution and contamination of the ocean and tide lands and all impairment of and interference with bathing, fishing, or navigation in the waters of the ocean or any bay or inlet thereof is prohibited, and no oil, tar, residuary product of oil or any refuse of any kind from any well or works shall be permitted to be deposited on or pass into the waters of the ocean or any bay or inlet thereof.
(g) No permanent filled lands, piers, platforms, or other fixed or floating structures in, on, or over the tide and submerged lands covered by the lease or otherwise available to the lessee shall be permitted to be constructed, used, maintained, or operated where service of less than 20 wells is provided for, without specific authority by the commission. Operating wells not meeting the foregoing requirement shall be completed below such elevation as may be required in each case by the United States, the State, or other competent authority, with the production piped along or below the floor of the ocean to such receiving points as the commission may determine or approve. For nonoperative wells the structures or facilities used for their drilling shall be removed to the satisfaction of the commission within ninety (90) days' time after such wells have been determined to be nonoperative unless a longer period is approved by the commission.