“Accessory dwelling unit” or “ADU” means a residential structure as defined in California Government Code Section 65852.2(j)(1).

“Agricultural crop” means any annual field product grown and harvested for human consumption in its natural or processed condition.

“Agricultural irrigation conveyance system” means an artificial ditch, channel, or other manmade feature serving as a water conveyance for agricultural irrigation purposes as recognized by the applicable watermaster in the geographical areas covered by an existing surface water decree or other surface water decree that may be in effect or where no surface water decree exists, as recognized by a field inspection by the Planning Department and consultation with the applicable watermaster and/or the California Department of Water Resources.

“Agriculture” means the art and science of large scale cultivation of the ground, including harvesting of crops and rearing and managing livestock; tillage; husbandry; farming; horticulture; and forestry; the art and science of the production of plants useful to man.

“Airport” means an area maintained for the landing, takeoff, storage, repair, and/or shelter of aircraft and so designated by the state of California, Division of Aeronautics and Sierra County.

“Airport airspace” means the space lying above and adjacent to an airport.

“Airport approach zone” means a portion of the airspace, the lower limit being a fan-shaped inclined plane, longitudinally centered on the extended runway centerline and located at each end of the primary surface. The slope and horizontal dimensions of the approach zone will vary based on the type of approach available and/or type planned for that runway. The inner end width is that of the primary surface.

“Airport clear zone” means a rectangular horizontal area located at each end of the primary surface, longitudinally centered on the runway centerline, and extending outward along centerline for a distance of 1,000 feet. The width of the clear zone is that required for the primary surface.

“Airport conical zone” means a portion of the airspace, the lower limit extending outward and upward from the periphery of the lower limit of the horizontal zone at a slope of twenty to one (20:1) horizontal to vertical ratio for a horizontal distance of 4,000 feet.

“Airport glideslope” means the path of flight followed by an aircraft when approaching a runway. This path is aligned above the extended runway centerline and varies in slope according to the type of approach available and/or planned for that runway.

“Airport hazard” means any structure or natural feature or use of land which obstructs the required airspace for the flight of aircraft in landing or taking off at an airport.

“Airport horizontal zone” means a portion of the airspace, the lower limit being an oval-shaped horizontal plane 150 feet above the established airport elevation. The perimeter of the horizontal zone is determined by swinging arcs of a specified radii from the center of each end of the primary surface and connecting the adjacent arcs with lines tangent to the arcs. The radius of the arcs varies according to the type of approach available or planned for that runway.

“Airport landing area” means the area in and adjacent to the airport for the landing, taxiing, maneuvering, or take-off of aircraft.

“Airport noninstrument approach zone” means an area having a width of 250 feet at a point 200 feet beyond each end of the runway, widening thereafter uniformly to a width of 2,250 feet at a distance of 10,200 feet beyond each end of the runway, its centerline being the continuation of the centerline of the runway.

“Airport primary surface” means a rectangular surface longitudinally centered on and extending 200 feet beyond both ends of an airport runway. The elevation of the primary surface is the nearest point on the runway centerline. The width of the primary surface will vary according to the type of approach available and/or type planned for that runway.

“Airport transitional zone” means a portion of the airspace, the lower limit being an inclined plane, extending outward and upward from the primary surface and lower limits of the approach surface at right angles to the runway centerline. The transitional zone also includes that airspace from the runway centerline extended, at a slope of 7:1, until it intersects with the lower limit of the horizontal zone.

“Apartment” means a room, or suite of two or more rooms, which is designated for, intended for, or occupied by one family doing its cooking therein, and containing its own toilet and bathing facilities. (Ord. 1117, eff. 1/1/23)