Glossary of Terms

Glossary of Terms and Abbreviations

Adaptive Reuse: The conversion of obsolescent or historic buildings from their original or most recent use to a new use.
Airport Land Use Compatibility Plan (ALUCP):  The ALUCP provides for the orderly growth of the areas within an airports noise contours, runway protection zones, approach zones, and Part 77 zones and describes appropriate land uses, maximum population density, maximum site coverage, height restrictions, and required notification/disclosure areas.
Airport Master Plan (AMP):  An AMP provides for the maintenance, development, and operation of the airport itself and includes operational forecasts, fleet mixes and the ultimate runway configuration and airport plan.
Best Management Practices: Methods or techniques found to be the most effective and practical means in achieving an objective (such as preventing or minimizing pollution) while making the optimum use of resources.
Building Intensity:  Building intensity includes both residential density, expressed as units per acre, and non-residential intensity, expressed as floor area ratio, which is the amount of building square feet in relation to the size of the lot.
Buildout:  Build-out is an urban planners estimate of the amount and location of potential development for an area.  Buildout for The Ontario Plan can be found in Exhibit LU-12.
Built Environment:  Human-made buildings and structures, as opposed to natural features.
Carbon Footprint:  A carbon footprint is a measure of the impact human activities have on the environment in terms of the amount of greenhouse gases produced
Carbon Sequestration:  The removal and storage of carbon from the atmosphere in carbon sinks (such as oceans, forests or soils) through physical or biological processes, such as photosynthesis.
CDBG (Community Development Block Grant):  A grant program administered by the U.S. Department of Housing and Urban Development (HUD) that provides federal grants directly to larger urban cities and counties for activities that benefit low- and moderate-income individuals, eliminate blight, or address a serious and immediate threat to public health and welfare.  States distribute CDBG funds to smaller cities and towns.  Grant amounts are determined by a formula based upon need.
Center City Redevelopment Area:  The Center City Project Area was established November 1, 1983, and, as amended, encompasses historic Downtown Ontario as well as East Holt Boulevard. Ontario’s City Hall and surrounding Civic Center, Senior Center, Main Library, the Museum of History and Art, and the Law School of the University of La Verne are all within the Center City project area. Many of the most historically significant and architecturally important buildings in Ontario are also located in historic downtown. In addition to the historic downtown, the Center City Redevelopment Area also includes East Holt Boulevard, which serves as the gateway to Ontario International Airport and the Ontario Convention Center. The current goals of the Center City Project include: improving aesthetics on major corridors, promoting the creation of a mixed-use urban village in the Civic Center area and preserving the Citys historic commercial structures, neighborhoods and housing stock. Other features of the Center City Redevelopment Area include the historic 400 Block of Euclid Avenue and the Emporia Arts District.
CEQA (California Environmental Quality Act):  A state law requiring state and local agencies to assess the environmental impacts of public or private projects they undertake or permit.  Agencies must mitigate adverse impacts of the project to the extent feasible.  If a proposed activity has the potential for significant adverse environmental impacts, and Environmental Impact Report (EIR) must be prepared and certified as legally adequate by the public agency before taking action on the proposed project.
CHAS (Comprehensive Housing Affordability Strategy):  A plan prepared by state or local agencies as a prerequisite for receiving assistance under certain U.S. Department of Housing and Urban Development (HUD) programs.
Cimarron Redevelopment Area: The Cimarron Redevelopment Project Area was established October 7, 1980. After amendments, it is comprised of nine noncontiguous areas, totaling 91 acres that are now mostly redeveloped.
Class I Trail:  A paved route not on a street or roadway and expressly reserved for bicycles traversing an otherwise unpaved area.
Class II Trail:  An on-street, striped and signed bicycle lane
Class III Trail:  An on-street, signed bicycle lane
COG (Council of Governments):  A single or multi-county entity created by a joint power agreement.  COG’s are responsible for determining the share of the regional need for housing for each of the counties and cities within the COG’s region.   In most cases, the COG also serves as the Regional Transportation Planning Agency (RTPA) responsible for preparing regional transportation plans and expenditure programs.
Community Noise Equivalent Level (CNEL):  A 24-hour energy equivalent level derived from a variety of single-noise events, with weighting factors of 5 and 10 dBA applied to the evening (7 p.m. to 10 p.m.) and nighttime (10 p.m. to 7 a.m.) periods to allow for greater sensitivity to noise during these hours.
Compass Blueprint:  Compass Blueprint is a new way to look at how we grow. The Compass Blueprint Growth Vision is a response, supported by a regional consensus, to the land use and transportation challenges facing Southern California now and in the coming years.The Growth Vision is driven by four key principles:

  • Mobility – Getting where we want to go
  • Livability – Creating positive communities
  • Prosperity – Long-term health for the region
  • Sustainability – Promoting efficient use of natural resources

To realize these principles on the ground, the Growth Vision encourages:

  • Focusing growth in existing and emerging centers and along major transportation corridors
  • Creating significant areas of mixed-use development and walkable communities
  • Targeting growth around existing and planned transit stations
  • Preserving existing open space and stable residential areas

Learn more at

Complete Community:  A diversity of housing choices and educational opportunities; jobs for a variety of skills and education; recreation and culture; a full-range of shopping, entertainment and services; and the opportunity to improve individual quality of life.
Crime Prevention Through Environmental Design (CPTED):  Crime Prevention through Environmental Design (CPTED) is the proper design and effective use of the built environment which may lead to a reduction in the fear and incidence of crime, and an improvement of the quality of life.” – National Crime Prevention Institute
Critical Facilities:  Facilities housing or serving many people, that are necessary in the event of an earthquake or flood, such as hospitals, fire, police, and emergency service facilities, utility lifeline facilities, such as water, electricity, and gas supply.  Critical Facilities within Ontario are shown on Figure S-5 of the Safety Element.
Emergency Communication & Dispatch Center:  The Dispatch center provides daily dispatch services for the Fire & Police Departments and contract fire agencies. The dispatch Center is also a designated facility as part of Californias Fire Rescue Mutual Aid System.
Environmental Infrastructure:  The basic facilities, services, and installations needed for the functioning of key systems such as the sewerage network, drainage systems as well as improvements made to water courses and habitats
Fire Conflagration:  An uncontrolled burning that threatens human life, health, property or ecology that may produce a firestorm, in which the central column of rising heated air induces strong inward winds, which supply oxygen to the fire.
Flash Flood :  A flash flood is a rapid flooding of geomorphic low-lying areas – washes, rivers and streams. It is caused by heavy rain associated with a thunderstorm, hurricane, or tropical storm. Flash floods can also occur after the collapse of an ice dam, or a human structure.
Flood Insurance Rate Map (FIRM):  For each community, the official map on which the Federal Insurance Administration has delineated areas of special flood hazard and the risk premium zones applicable to that community. 
Floor Area Ratio (FAR):  The gross floor area permitted on a site divided by the total net area of the site, expressed in decimals to one or two places.  
Focus Areas:Ontario Airport Metro Center. This area is envisioned as the most intensive concentration of development in the Inland Empire and includes the Convention Center and hospitality area along Vineyard Avenue; Ontario Mills; Guasti Village, the Events Center, and major office and urban residential centers. The area benefits from major transportation facilities including the I-10 and I-15 freeways, LAONT, and a variety of transit options.Downtown. This is the historic heart of Ontario and is a unique blend of historic, social and cultural uses set in a compact street grid. It includes our Civic Center, Library, diverse residential neighborhoods, and retail opportunities along Euclid Avenue, Holt Boulevard and B Street.New Model Colony Mixed Use Centers. These are the mixed use centers of the New Model Colony and are characterized by a combination of retail, office, and residential uses in a walkable environment.

Commercial/Residential Corridors. These older commercial corridors are envisioned as areas that transition to new residential uses. They are intended to provide new housing opportunities that will also provide increased demand for retail in more concentrated, strategic locations (e.g., at major intersections).

Global Gateway:  Ontario is increasingly identified for the competitive advantages it provides to businesses that want to succeed in the global marketplace and for its growing importance to the state, national and international economies. Ontario’s distinction as a Global Gateway is due to its strategic Southern California location at the center of a rapidly developing freight movement system that includes LA-Ontario International Airport (ONT), two railroads, four major freeways and an expanding network of freight forwarders. ONT is one of the fastest growing and ambitious cargo airports outside the booming Asia-Pacific market and home to United Parcel Services Western Regional Hub providing daily direct flights to China. The Ontario Foreign Trade Zone is also significant to businesses involved in international trade. This envied transportation network links Ontario-based companies to the Ports of Los Angeles and Long Beach as well as western, national and international markets.
Global Warming :  An increase in the earth’s atmospheric and oceanic temperatures widely predicted to occur due to an increase in the greenhouse effect resulting especially from pollution.
Greenhouse Gases (GHG):  A Greenhouse gas is one that contributes to the warming of the Earth’s atmosphere by reflecting radiation from the Earth’s surface. (e.g. carbon dioxide, ozone, or water vapor)
Green Infrastructure: Green infrastructure is strategically planned and managed networks of natural lands, working landscapes and other open spaces that conserve ecosystem values and functions and provide associated benefits to human populations.
Guasti Redevelopment Area:  This project area was established July 17, 2001, and comprises 19 contiguous parcels on approximately 180 acres between I-10 and the Ontario International Airport. It includes a number of historically significant structures. 
Hazard Mitigation Plan:  The Multi-Hazard Mitigation Plan is a comprehensive resource document that serves many purposes, including: enhancing public awareness and understanding, creating a decision tool for management, promoting compliance with State and Federal program requirements, enhancing local policies for hazard mitigation capability, and providing inter-jurisdictional coordination.  The Federal Disaster Mitigation Act of 2000 requires all local governments to create such a disaster plan in order to qualify for funding in the future.  
Hazardous Material:  Any substance that, because of its quantity, concentration, or physical or chemical characteristics, poses a significant present or potential hazard to human health and safety or to the environment if released into the workplace or the environment. The term includes, but is not limited to, hazardous substances and hazardous wastes.
HCD (California Department of Housing and Community Development):  A state agency that administers state housing programs.  HCD also administers the federal HOME and CDBG programs on behalf of jurisdictions that are not directly assisted by HUD.
HOME (HOME Investment Partnership Program):  A federal housing program that provides formula grants to states and localities.  Communities use the grants (often in partnership with local nonprofit groups) to fund a wide range of activities.   These include building, buying, or rehabilitating affordable housing for renters and homeowners, and providing direct rental
HUD (U.S. Department of Housing and Urban Development):  A federal, cabinet level department responsible for overseeing, implementing and administering U.S. government housing and urban development programs.
Impervious Surface:  A surface through which water cannot penetrate, such as a roof, road, sidewalk, or paved parking lot. The amount of impervious surface increases with development and establishes the need for drainage facilities to carry the increased runoff.
Jobs-Housing Balance:  The jobs/housing ratio divides the number of jobs in an area by the number of households.  A ratio greater than 1.0 indicates a net in-commute (job-rich community); less than 1.0 indicates a net out-commute (housing-rich community).
LAONT:  Los Angeles/Ontario International Airport.
Land Use District Boundary:  Where a boundary line is indicated as following a street or alley, the boundary line shall be construed as following the centerline of the right-of way. Where a street or alley is officially vacated or abandoned, the area within vacated street or alley on each side of the centerline shall be classified in the same land use district as the adjoining property.
Level of Service (Traffic):  A scale that measures the amount of traffic that a roadway or intersection can accommodate, based on such factors as maneuverability, driver dissatisfaction, and delay.
Multi-Purpose Trail:  An off-street trail that accommodates pedestrian and bicycle travel.
National Flood Insurance Program:  A federal program that authorizes the sale of federally subsidized flood insurance in communities where such flood insurance is not available privately.
Natural Ecosystem:  Natural ecosystem is a natural unit consisting of all plants, animals and microorganism in an area functioning together with all the non-living physical of the environment. That or, a place where plants and animals are dependent upon one another-and their particular surroundings-for survival.
Parkland:  Land used for public recreational and open space purposes.
Particulate Matter:  “Particulate matter,” also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets. Particle pollution is made up of a number of components, including acids (such as nitrates and sulfates), organic chemicals, metals, and soil or dust particles.
Potable Water:  Water of sufficient quality to serve as drinking water, whether it is used for drinking or not.
Project Area 1:  Project Area 1 was established on July 18, 1978, as the Agency’s initial project area and was later amended to include additional areas. Originally blighted and disused, the project area now includes the Ontario Auto Center, containing 25 auto dealerships; the Ontario Mills, a super-regional retail outlet shopping and entertainment complex; the Ontario Center, a large-scale office, retail and hospitality complex; and a substantial number of warehouse and distribution facilities.
Project Area 2:  Project Area 2 was established October 5, 1982, and was amended in December 1994. The original project area consists of 17 noncontiguous subareas, totaling 414 acres, which consist of primarily residential uses and are mostly developed. The area covered by Amendment No. 1 consists of 285 acres of predominately commercial and retail uses. This area now includes the Ontario Mountain Village Entertainment Complex, the Ontario Plaza/Seasons Gateway commercial center, and the Gateway at Mountain Village commercial center.
Public (Noun):  Residents, business, visitors and travelers.
Rare or Endangered Species:Rare:  A native California plant (species, subspecies or variety) is rare when, although not presently threatened with extinction, it is in such small numbers throughout its range that it may become endangered if its present environment worsens (Section1901, Fish and Game Code). Since 1985, this designation applies to plants only.Endangered:  A native California bird, mammal, fish, amphibian, reptile, or plant (species, subspecies or variety) is endangered when it is in serious danger of becoming extinct throughout all, or a significant portion of its range due to one or more causes, including loss of habitat, change of habitat, over-exploitation, predation, competition or disease (Section 2062, Fish and Game Code).
Recycled Water: Recycled Water is former wastewater (sewage) that has been treated to remove solids and certain impurities, and then allowed to recharge the aquifer or used for non-potable purposes rather than being discharged to surface water.
Renewable Energy:  Renewable energy is energy that is virtually inexhaustible in duration but limited in the amount of energy that is available per unit of time. Renewable energy includes biomass, hydropower, geothermal, solar, wind, ocean thermal, wave action, and tidal action.
SANBAG:  San Bernardino County Association of Governments.
SCAG:  Southern California Association of Governments.
Sensitive Land Uses:  Uses that by their nature and characteristics can be significantly impacted by the noise, odor, vibration, air quality and inherent hazards associated with other uses near it.  Sensitive uses include, but are not limited:  single family residences, schools, churches, hospitals, day care facilities and nursing homes. 
Sensitive Species:  Sensitive” refers to naturally-reproducing fish and wildlife species, subspecies, or populations which are facing one or more threats to their populations and/or habitats. 
Solar Access:  The provision of direct sunlight to an area specified for solar energy collection when the suns azimuth is within 45 degrees of true south. 
Solid Waste:  Any unwanted or discarded material that is not a liquid or gas. Includes organic wastes, paper products, metals, glass, plastics, cloth, brick, rock, soil, leather, rubber, yard wastes, and wood, but does not include sewage and hazardous materials.  Organic wastes and paper products comprise about 75 percent of typical urban solid waste.
Sustainable Development :  Development that maintains or enhances equity, economic opportunity, and community well-being while protecting and restoring the natural environment upon which people and economies depend. Sustainable development meets the needs of the present without compromising the ability of future generations to meet their own needs.
Urban Run-off:  Urban runoff is surface runoff of rainwater over impervious surfaces.  During rain storms and other precipitation events (including run-off from overwatering landscape areas), these surfaces (built from materials such as asphalt, cement, and concrete), along with rooftops, carry polluted stormwater to storm drains, instead of allowing the water to percolate through soil. This causes lowering of the water table (because groundwater recharge is lessened) and flooding since the amount of water that remains on the surface is greater.
Waste Diversion:  The act of preventing garbage from being disposed of in landfills or incinerators by reducing the amount of materials that you use or buy, reusing products, recycling or composting.
Wastewater  Spent or used water with dissolved or suspended solids, discharged from homes, commercial establishments, farms, and industries.
Williamson Act :  Known formally as the California Land Conservation Act of 1965, it was designed as an incentive to retain prime agricultural land and open-space in agricultural use, thereby slowing its conversion to urban and suburban development.  The program entails a ten-year contract between the City or County and an owner of land whereby the land is taxed on the basis of its agricultural use rather than its market value. The land becomes subject to certain enforceable restrictions, and certain conditions need to be met prior to approval of an agreement.