- AELUP. Airport Environs Land Use Plan (a land use compatibility plan referred to in Public Utilities Code Section 21675).
- Accessibility. Accessibility refers to the ability to reach destinations. While mobility focuses on how to get to a particular destination, accessibility focuses on where you are going. For transportation purposes, accessibility also refers to the limitations of individuals to get to a particular destination.
- Accommodate. To make room for or provisions for something that is specifically intended to occur.
- Action. An activity, program, or initiative undertaken by the City or another stakeholder, typically to implement a policy or goal of the General Plan.
- Active transportation. Transportation conducted purely through direct human movement, such as walking, cycling, using a wheelchair, in-line skating, or skateboarding. An active transportation system refers to the pedestrian and bicycling paths that provide opportunities for human-powered transportation.
- Advocate. To openly support and promote an action, objective, or goal; also to speak on behalf of an individual or group.
- Adaptive reuse. A method by which a building is adapted/modified to a different use from its original use, while its general physical form is retained. See also historic rehabilitation for historical buildings.
- Agency. A governmental entity, department, office, or administrative unit responsible for carrying out regulations.
- Agriculture. Use of land for the production of food and fiber, including the growing of crops and/or the grazing of animals on natural prime or improved pasture land.
- Air basin. One of 14 self-contained regions in the United States, minimally influenced by air quality in contiguous regions. Santa Ana is located in the South Coast Air Basin.
- Air pollutants. Any airborne substance that could, in high enough concentration, harm animals, humans, vegetation, and/or materials. With respect to circulation, air pollutants fall into two main groups: (1) those emitted from identifiable sources (such as vehicles) and, (2) those formed in the air by interaction between pollutants and weather conditions.
- Air pollutant emissions. Discharges into the atmosphere, usually specified in terms of weight per unit of time for a given pollutant. The South Coast Air Quality Management District has identified primary pollutants including carbon monoxide, nitrogen dioxide, particulates (PM10), reactive organic gases, and sulfur dioxide.
- Air pollution control district (APCD). A single-or multi-county agency with legislative authority to adopt and enforce all rules and regulations necessary to control non-vehicular sources of air pollutants in its area. The South Coast Air Quality Management District (SCAQMD) is the designated APCD for the South Coast Air Basin.
- Air quality standard. A health-based standard for air pollution established by the federal government and the State. Santa Ana is located in the South Coast Air Basin which is considered a non-attainment area for ozone and a number of other pollutants.
- Airport. Any public or military airport, air station, or air facility.
- Allow. To be open to something occurring but without any particular effort to make it happen.
- ALUC. Airport Land Use Commission.
- Ambient air quality. The quality of the air at a particular time and place.
- Ambient noise level. The composite of noise from all sources near and far. In this context, the ambient noise level constitutes the normal or existing level of environmental noise at a given location.
- Americans With Disabilities Act (ADA). A federal law that prohibits discrimination based on disability. Titles II and III of the ADA Act of 1990 include enforceable accessibility standards called the 2010 ADA Standards for Accessible Design. The standards set minimum requirements for state and local government facilities, public accommodations, and commercial facilities to be readily accessible to and usable by individuals with disabilities
- Annexation. The means by which an incorporated city or town extends its corporate boundaries. Annexation of unincorporated land into an incorporated city or town is initiated by a petition of affected land owners or registered voters, or by resolution from the incorporated city or town. The process of annexation is overseen by the Local Agency Formation Commission (LAFCO).
- Analyze. To methodically examine the desirability or feasibility of something, with a view toward letting the evidence determine the appropriate level of commitment.
- APZ. Accident Potential Zone (zones established around some airports based on accident histories and operational characteristics).
- Arcade. An arched roof or covered passageway.
- Architectural character. The characteristic given to buildings by prominence derived from distinctive and attractive attributes in its architecture and ornamental detailing.
- Architectural feature. A prominent or significant part or element of a building, structure, or site,
- Architectural style. The characteristic form and ornamental detail of buildings of a particular period.
- Arterial street. A major street carrying the traffic of local and collector streets to and from freeways and other major streets, with controlled intersections that generally provide direct access to properties. Please refer to Master Plan of Arterial Highways for a detailed description.
- Articulation. Clear and distinct separation between design elements.
- Aspire. To direct one’s ambitions toward achieving something.
- Attractive. Having qualities that arouse interest and pleasure in the observer.
- Augment. To add to something that is already in place to make it more desirable, functional, or beneficial.
- Automatic aid. Automatic aid is assistance that is dispatched automatically by a contractual agreement between two emergency service departments, communities, or districts when an emergency occurs. It differs from mutual aid, which is arranged on an as-needed and requested basis.
- Avoid. To not enable something that will lead to an undesirable outcome.