Question: What coast does the state, in which the Rancho Jurupa land grant divided areas, boarder? 

Context paragraphs:
Rancho Cañada de Raymundo: Rancho Cañada de Raymundo was a 12545 acre Mexican land grant in present-day San Mateo County, California given August 4, 1840 to Raimundo (also known as Raymundo), a native of Baja California, who was sent out by the padres of Mission Santa Clara to capture runaway Mission Indians in 1797.  On the 1856 Rancho de las Pulgas and 1868 Easton maps, the valley of Laguna Creek was referred to as the "Cañada de Raymundo".  Laguna Creek was also alternatively known as "Cañada Raimundo Creek".  In 1841 Rancho Cañada de Raymundo was granted to John Coppinger by Governor Juan Alvarado for helping in the revolt led by Alvarado against the Mexican authorities in Monterey.  The two and one half league long by three-quarter league wide grant consisted the eastern slopes and valleys in the present-day Woodside area.  The grant began at Alambique Creek, the north border of Rancho Corte de Madera, and extended north to Rancho Feliz.  Rancho Cañada de Raymundo was bounded on the east by Rancho de las Pulgas.  The rancho contained Laguna Grande (now Upper Crystal Springs Reservoir), then a natural lake that was the campsite of the Portolà expedition on November 5, 1769, and was bisected by Laguna Creek, which flowed from southeast to northwest through the lake on its way to San Mateo Creek.

California: California ( , ) is the most populous state in the United States and the third most extensive by area.  Located on the Pacific coast, California shares borders with Oregon to the north, Nevada and Arizona to the east, and the Mexican state of Baja California to the south.  The state capital is Sacramento.  Los Angeles is California's most populous city, and the country's second largest after New York City.  The Greater Los Angeles Area and the San Francisco Bay Area are the nation's second- and fifth-most populous urban regions, respectively.  California also has the nation's most populous county, Los Angeles County, and its largest county by area, San Bernardino County.

Rancho La Sierra (Yorba): Rancho La Sierra (also called La Sierra de Santa Ana) was a 17769 acre Mexican land grant in present-day Riverside County, California, United States.  In 1846 governor Pio Pico issued the grant to Bernardo Yorba.  The grant lay between Rancho Jurupa and Rancho El Rincon, and included the present-day city of Corona.

Louis Rubidoux: Louis Rubidoux (1796–1868, born Louis Robidoux) was an early European settler in the area of modern-day Riverside, California, United States.  He was son of Joseph Robidoux III and Catherine Marie Rollet.  He arrived in California in 1844.  He bought Rancho San Jacinto y San Gorgonio from James (Santiago) Johnson in 1845, and a portion of the Rancho Jurupa from Benjamin Wilson in 1849.  Rubidoux became a successful rancher.  He built the first grist mill in the area, operated a winery, and became one of San Bernardino County's first three supervisors.  The town of Rubidoux and Mount Rubidoux in Riverside County, California are named for him.

Rancho Jurupa: Rancho Jurupa was a 40569 acre Mexican land grant in California, United States, that is divided by the present-day counties of Riverside and San Bernardino.  The land was granted to Juan Bandini by Governor Juan B. Alvarado in 1838.  Located along both banks of the Santa Ana River in southern California, the rancho included much of the land in the present day city of Jurupa Valley, as well as the downtown area in the city of Riverside.

Rancho Rincon de la Brea: Rancho Rincón de la Brea (also called "Rancho Cañada de la Brea") was a 4452 acre Mexican land grant in present day Los Angeles County, California given in 1841 by Governor Juan Alvarado to Gil Maria Ybarra.  The name means "Tar Gully Ranch" in Spanish.  The one square league grant extended southward from San Jose Creek into the hills of Brea Canyon.  Known as "Rancho la Canada de la Brea" when application for the grant was originally made in 1841, it was subsequently referred to as "Rancho Rincon de la Brea" and "Rancho de los Ybarras".  The rancho was situated in present day unincorporated Los Angeles County: east of Rowland Heights, south of La Puente, west of Diamond Bar, and north of Brea.

Rancho Ex-Mission la Purisima: Rancho Ex-Mission la Purisima (also called Rancho Purisima) was a 14736 acre Mexican land grant in present-day Santa Barbara County, California given in 1845 by Governor Pio Pico to Jonathan Temple.  The rancho derives its name from the secularized Mission La Purísima, but was called ex-Mission because of a division made of the lands held in the name of the Mission— the church retaining the grounds immediately around, and all of the lands outside of this are called ex-Mission lands.  The grant was north of the Santa Ynez River and present-day Lompoc and encompasses present-day Vandenberg Village.  The grant was defined by the boundaries of the earlier surrounding grants, viz: Rancho Mission Vieja de la Purisma, Rancho Jesús María, Rancho Lompoc, Rancho Los Alamos, and Rancho Santa Rita.

Rancho San Juan de Las Secuas: Rancho San Juan de Las Secuas also known as Rancho Secuan or Rancho Sequan was unusual in that it was originally a Mission land grant to Apolinaria Lorenzana and its next owner Juan Bautista Lopez failed in an attempt establish it as a Mexican land grant rancho of Alta California and abandoned it.

Rancho El Rincon: Rancho El Rincón was a 4431 acre Mexican land grant in present-day San Bernardino County and Riverside County, California given in 1839 to Juan Bandini by Governor Juan Alvarado.  El rincón means "the corner" in Spanish.  The grant, located south of present-day Chino, was bounded on the east by Rancho Jurupa, on the south by the Santa Ana River, on the west by Rancho Cañón de Santa Ana, and extending northerly from the river one league.  The rancho lands include Prado Regional Park.

Rancho Santa Anita: Rancho Santa Anita was a 13319 acre land grant in present-day Los Angeles County, California given to naturalized Scottish immigrant Hugo Reid and his Tongva wife.  Reid built an adobe residence there in 1839, and the land grant was formally recognized by Governor Pio Pico in 1845.  The land grant covered all or portions of the present day cities of Arcadia, Monrovia, Sierra Madre, Pasadena and San Marino.  A small portion of the rancho has been preserved as the Los Angeles County Arboretum and Botanic Garden.

Supporting paragraphs: Rancho Jurupa California
Answer: Pacific