(A) Fences. All oil leaseholds, drill sites and sumps, sump holes, oil wells and production equipment having external moving parts found by the Secretary to be hazardous to life or limb shall be attended 24 hours a day by an adult having an understanding of oil production operations; or, in lieu of the attendance, shall be enclosed according to the following requirements.
(1) Individual drill sites. All such individual drill sites shall be enclosed by a solid masonry fence or a fence of equivalent quality and character, as determined by the Agency, such fence to have a height not less than six feet and not more than ten feet. The fence shall have a gate opening not less than 15 feet in width. Fully enclosed individual drill sites shall be designed to harmonize with the architectural character of a surrounding development or proposed development as indicated on the city’s general plan. The design shall have the prior approval of the city’s Planning Commission and Agency.
(2) Controlled drill site. Such a controlled drill site shall be enclosed on the boundary lines thereof by a ten foot wide landscaped area and a solid masonry wall or a wall of equivalent quality and character, as determined by the Agency. The wall is to have a height not less than six feet and not more than 15 feet. The wall shall have a gate opening not less than 20 feet in width. The nature of the required landscaping for such a site shall have the prior approval of the Secretary.
(3) Sumps, sump holes and oil wells and production – equipment having external moving parts hazardous to life or limb. All such sumps, sump holes, oil wells and oil production equipment shall be enclosed by a steel chain link type fence not less than six feet in height. The fence shall have gates located at nonhazardous locations and shall be locked at all times when unattended by a watchman or serviceman.
(B) Landscaping.
(1) Any drilling site, including an entire controlled drilling site, shall be adequately landscaped except for those portions of the site within the confines of required walls and those areas required for access and driveway. Plans showing the type and extent of such landscaping shall first be submitted to and approved by the Secretary.
(2) Upon the completion of the drilling of a well, the premises shall be placed in a clean condition and shall be landscaped with shrubbery and trees subject to the approval of the Secretary. The landscaping shall be maintained in good condition.
(3) No slope of cut or fill shall have a gradient steeper than a one-foot rise in a one-foot horizontal measure. If, by reason of the condition of the soil, the nature of the terrain or the size or length of the cut required, it is impractical to provide such gradient, the Agency may grant an exception to such requirement; provided, however, that it first finds that compliance with such requirement is impractical and that the architectural and aesthetic integrity of the surrounding neighborhood will be maintained if such exception is granted.
(4) All excavation slopes, cut and fill shall be planted and maintained with grasses, plants or shrubs during drilling and production operations in a manner comparable with the undisturbed surfaces in the vicinity of such excavations.
(`78 Code, § 14.20.090.)