Description. Light industrial land uses are industrial facilities at which all operations (with the exception of loading operations): (1) are conducted entirely within an enclosed building; (2) are not potentially associated with nuisances such as odor, noise, heat, vibration, and radiation which are detectable at the property line; (3) do not pose a significant safety hazard (such as danger of explosion); and (4) comply with all of the performance standards listed for potential nuisances in Chapter 17.66. Light industrial land uses may conduct retail sales activity as an accessory use provided that the requirements of Section 17.20.090, are complied with.

Description. Heavy industrial land uses are industrial facilities which do not comply with one or more of the following criteria: (1) are conducted entirely within an enclosed building; (2) are not potentially associated with nuisances such as odor, noise, heat, vibration, and radiation which are detectable at the property line: and (3) do not pose a significant safety hazard (such as danger of explosion). More specifically, heavy industrial land uses are industrial land uses which may be wholly or partially located outside of an enclosed building; may have the potential to create certain nuisances which are detectable at the property line; and may involve materials which pose a significant safety hazard. However, in no instance shall a heavy industrial land use exceed the performance standards listed in Chapter 17.66. Examples of heavy industrial land uses include meat product producers; alcoholic beverage producers; paper, pulp or paperboard producers; chemical and allied product producers (except drug producers) including poison or fertilizer producers; petroleum and coal product producers; asphalt, concrete or cement producers; tanneries; stone, clay or glass product producers; primary metal producers; heavy machinery producers; electrical distribution equipment producers; electrical industrial apparatus producers; transportation vehicle producers; commercial sanitary sewage treatment plants; railroad switching yards; and recycling facilities not involving the on-site storage of salvage materials.

Description. Communication towers include all free-standing broadcasting, receiving, or relay structures, and similar principal land uses; and any office, studio or other land uses directly related to the function of the tower.

Description. Extraction uses include and land uses involving the removal of soil, clay, sand, gravel, rock, minerals, peat, or other material in excess of that required for approved on-site development or agricultural activities.