§ 153.180  USES.
   (A)   If ambiguity arises concerning the appropriate classification of a particular use with the meaning and intent of this chapter, or with respect to matters of height, yard requirements, area requirements or zone boundaries, as set forth herein and as they pertain to unforeseen circumstances, including technological changes in processing of materials, it shall be the duty of the Planning Commission to ascertain all pertinent facts and by resolution set forth its findings and its interpretations, and therefore such interpretations shall govern.
   (B)   The provisions of §§ 153.180 through 153.185 shall not apply to poles, lines, or other structures or facilities used or usable by any irrigation district or public utilities company, solely for the purpose of producing, transmission and/or distribution of electricity, signal or communication circuits and shall not be construed to limit or interfere with the installation, maintenance and operation of public utility pipelines, and electric or telephone transmission lines or railroads when located in accordance with the applicable rules and regulations of the Public Utilities Commission of the State of California within rights-of-way, easements, franchise, or ownership of such public utilities.
   (C)   Accessory buildings appurtenant to a permitted use shall be allowed only when constructed concurrent with or subsequent to the main buildings.
(`67 Code, § 10-13-1)