In O districts, no building, structure or land shall be used, and no building or structure shall be hereafter erected, structurally altered or enlarged, except for the following purposes:
A. Principal Permitted Uses:
Agricultural and open uses of land.
Bridle trails.
Flood control structures.
Off street parking.
Public facilities and utilities.
Recreational uses.
B. Uses Permitted By Conditional Use Permit: The following uses may be permitted subject to approval of a conditional use permit:
Aggregate processing plants.
All principal permitted uses, whether public or private, involving the use of a building or structure, flood control structures excepted.
Asphalt batch plants.
Excavation and removing of rock, sand and gravel, including related equipment and apparatus therefor, and including accessory manufacturing uses which utilize the materials being excavated from the site as the primary component of the product. The site plan showing the location of all buildings, structures and storage areas shall be submitted to the county flood control district for its recommendations. In addition to compliance with the provisions of chapter 18.192 of this title, the commission shall establish any other conditions deemed necessary to adequately protect surrounding properties.
Ready mix concrete batch plants. (Ord. 2144 § 1, 1991: Ord. 1000 § 31.20, 1955)