Laguna Hills Technology Branch Library

Laguna Hills (; Laguna, Spanish for "Lagoon") is a city in Orange County, California, United States. Its name refers to its proximity to Laguna Canyon and the much older Laguna Beach. Other newer cities nearby—Laguna Niguel and Laguna Woods—are similarly named.

Area code 949 is an area code in California that is contained within South Orange County California. On April 18, 1998, the southern cities of Orange County were split from 714, creating area code 949. It includes some of the wealthiest communities in California; including such cities as Newport Beach, Irvine, Lake Forest, Portola Hills, Coto de Caza, Dove Canyon, Aliso Viejo, Trabuco Canyon, Capistrano Beach, Corona Del Mar, Laguna Niguel, Laguna Hills, Laguna Woods, Newport Coast, Foothill Ranch, Robinson Ranch, Mission Viejo, San Juan Capistrano, Rancho Santa Margarita, Ladera Ranch, Dana Point, Laguna Beach, and San Clemente. The city of Costa Mesa is shared between the 949 and 714 area codes, being split at Wilson Street and along Newport Boulevard. A very small portion of Irvine is also in the 714 area code, from the north side of Culver Drive at the I-5 to Jamboree Road in the Marketplace, in the neighborhood of Northpark Irvine.

The Monterey Formation is an extensive Miocene oil-rich geological sedimentary formation in California, with outcrops of the formation in parts of the California Coast Ranges, Peninsular Ranges, and on some of California's off-shore islands. The type locality is near the city of Monterey, California. The Monterey Formation is the major source-rock for 37 to 38 billion barrels of oil in conventional traps such as sandstones. This is most of California's known oil resources. The Monterey has been extensively investigated and mapped for petroleum potential, and is of major importance for understanding the complex geological history of California. Its rocks are mostly highly siliceous strata that vary greatly in composition, stratigraphy, and tectono-stratigraphic history. The US Energy Information Administration (EIA) estimated in 2014 that the 1,750 square mile Monterey Formation could, as an unconventional resource, yield about 600 million barrels of oil, from tight oil contained in the formation, down sharply from their 2011 estimate of a potential 15.4 billion barrels. An independent review by the California Council on Science and Technology found both of these estimates to be "highly uncertain." Despite intense industry efforts, there has been little success to date (2013) in producing Monterey-hosted tight oil/shale oil, except in places where it is already naturally fractured, and it may be many years, if ever, before the Monterey becomes a significant producer of shale oil. The Monterey Formation strata vary. Its lower Miocene members show indications of weak coastal upwelling, with fossil assemblages and calcareous-siliceous rocks formed from diatoms and coccolithophorids. Its middle and upper Miocene upwelling-rich assemblages, and its unique highly siliceous rocks from diatom-rich plankton, became diatomites, porcelainites, and banded cherts.

Laguna Hills Mall was a shopping mall in Laguna Hills, California, in southern Orange County that is being redeveloped by the owners as Five Lagunas. The enclosed mall closed on December 31, 2018 and will be demolished. The exterior stores remain open. New retail, a movie theater, apartments, and a parking structure are currently planned to replace the old mall structure.

Aliso Viejo (Spanish for "Old Sycamore") is a city in the San Joaquin Hills of southern Orange County, California. It had a population of 52,176 as of the 2020 census, up from 47,823 as of the 2010 census. It became Orange County's 34th city on July 1, 2001, the only city in Orange County to be incorporated since 2000. It is bordered by the cities of Laguna Beach on the west and southwest, Laguna Hills on the east, Laguna Niguel on the southeast, and Laguna Woods on the north. It is similarly named to another nearby city, Mission Viejo.

Mission Viejo High School is a four-year comprehensive public high school located in Mission Viejo, California, United States, as part of the Saddleback Valley Unified School District. The school has served the area since 1966. Students within its attendance boundaries live in western Mission Viejo, southwest Lake Forest, Trabuco Canyon, Rancho Santa Margarita, and Laguna Hills. Its mascot is Pablo the Diablo and its colors are scarlet and gold. 230 credits are required to graduate. It is the home to one of the only agricultural farms on a high school campus in the Saddleback Valley Unified School District. In the 2014–2015 school year, the school had an enrollment of 2,438 students and 92.7 classroom teachers (on an FTE basis), for a student–teacher ratio of 26.3:1. There were 333 students (13.7% of enrollment) eligible for free lunch and 100 (4.1% of students) eligible for reduced-cost lunch.

Laguna Woods Village is an age-restricted community for persons aged 55 and over in Laguna Woods, California. The development, formerly known as Leisure World, was developed by Ross Cortese, a former fruit stand owner turned retirement community developer.

The Chet Holifield Federal Building, colloquially known as "the Ziggurat Building", is a United States government building in Laguna Niguel, California. It was built between 1968 and 1971 for North American Aviation/Rockwell International, and designed by William Pereira. Since 1974 it has been owned and managed by the General Services Administration. National Archives and Records Administration had holdings for the Pacific region stored here, but has since moved to another location. Primary tenants are now regional offices of the United States Department of Homeland Security and the Internal Revenue Service.

Rancho Niguel was a 13,316-acre (53.89 km2) Mexican land grant in the San Joaquin Hills, within present-day Orange County, California. It was granted in 1842 by Governor Juan B. Alvarado to Juan Avila. The rancho was named for a local Indian village called "Niguili." The grant extended along the Pacific coast from Laguna Canyon and Laguna Beach, past Aliso Creek to Dana Point and San Juan Creek. The rancho encompassed those present-day places and Laguna Niguel, Aliso Viejo, and Laguna Hills.

Silverado High School is a continuation high school in Mission Viejo, California, United States. It is part of the Saddleback Valley Unified School District.

Galivan (Spanish: Gavilán, meaning "Sparrow Hawk") is a location in Orange County, California. Most internet-based mapping websites locate Galivan as a neighborhood or small locale near the cities of Mission Viejo and Laguna Niguel, about two miles north of the Interstate 5-California State Route 73 interchange. A California State Highway Map from 1960 from the Department of Public works, Division of Highways, shows Galivan 5 miles north of Highway 74. Coordinates for the location are 33.569, -117.674. While Galivan's status varies from map to map, it is almost always located at the spot where old U.S. Highway 101 (now Camino Capistrano) crossed over the Santa Fe railroad tracks. Prior to the construction of Interstate 5, a two-lane road was sufficient to carry the traffic through the then-rural area. The "Galivan Overhead" transferred the highway from one side of the railroad tracks to the other. While the bridge no longer exists, the portion of old Highway 101 is still mostly intact, and a similar bridge (designed by the same architect) can be found in Del Mar, California, also on a portion of old Highway 101, and also used to carry the roadway over the railroad tracks. Nothing remains in the area that suggests if there was ever a village there, as the surrounding area has been heavily urbanized.

Aliso Niguel High School (ANHS), which is part of the Capistrano Unified School District, is located in the city of Aliso Viejo, California. Most of its students reside in the communities of Aliso Viejo and Laguna Niguel. The school is a California Distinguished School, a National Blue Ribbon School, and a New American High School. Aliso Niguel was ranked as number 252 in Newsweek's 2016 list of the top 500 high schools in the nation.