The Hastings Mine is a mineral extraction site approximately 4.5 miles (7.2 km) northeast of the city of Vallejo , Solano County, California . The Hastings site on Sulfur Springs Mountain was used for extraction of cinnabar until the year 1930. The Hastings Mine is classified as a medium priority mine from the standpoint of environmental oversight. In the last inspection of the Hastings Mine in 1997, sediments in a drainage below the mine were found to contain ten parts per million of mercury ; furthermore, spring water below the mine exhibited a water concentration of .31 micrograms per liter (a violation of the state of California standard for receiving waters of .05 micrograms per liter). Miles of underground shafts were driven in the course of working the quicksilver deposits in the area. In 1989, Earth Metrics reviewed old 1918 maps of workings of the Hastings and St. John's Mines and found that mine shafts were not driven into the site prior to the year 1918.
32-509: Principal ongoing impact is from mercury contamination of spring water flowing beneath the site; moreover, historical analysis has shown that the volume of spring water itself has been greatly reduced from levels of a century ago. This reduction of spring flow has come about due to the extensive mine shafts driven to achieve the cinnabar extraction. 38°07′N 122°10′W / 38.12°N 122.17°W / 38.12; -122.17 This Solano County, California -related article
64-489: A general law county . The County government provides countywide services such as elections and voter registration, law enforcement, jails, vital records, property records, tax collection, public health, and social services. In addition the County serves as the local government for all unincorporated areas. The County government is composed of the elected five-member Board of Supervisors , several other elected offices including
96-547: A height of less than 40 centimeters. Their glabrous leaves, of length of approximately eight centimeters, are entire to pinnately lobed. Inflorescences appear in the form of solitary heads , with twelve to eighteen phyllaries fused at one third to less than mid length, a distinguishing hallmark for identification of this species. An involucre structure measures six to ten millimeters and may be somewhat hemispheric . The receptacle presents as dome-shaped or obconic . The yellow ray flowers may number six to thirteen petals, and
128-571: A political party. Democrats hold voter-registration advantages in all incorporated cities and towns in Solano County. However, Republicans lead in registration in the unincorporated communities of the county (40%-35%), making Solano the only county in the Bay Area where Republicans out-number Democrats in unincorporated communities. The Democrats' largest registration advantage in Solano is in
160-472: Is a stub . You can help Misplaced Pages by expanding it . Solano County, California Solano County ( / s ə ˈ l ɑː n oʊ / ) is a county located in the U.S. state of California . As of the 2020 census , its population was 453,491. The county seat is Fairfield . Solano County comprises the Vallejo–Fairfield metropolitan statistical area , which is also included in
192-593: Is acknowledged and protected under the Solano County Habitat Conservation Plan (HCP). The Solano County Habitat Conservation Plan encourages corridor preservation among vernal pool habitats, which are essential for this species' survival; in addition the HCP states the importance of recognizing genetic differences amongst various colonies of L. conjugens in order to protect the total species genetic diversity. Contra Costa goldfields
224-616: Is an endangered species of wildflower endemic to a limited range within the San Francisco Bay Area of the state of California , USA . Specifically this rare species occurs in Napa , Santa Barbara , Solano , Contra Costa , Santa Clara , Monterey and Alameda Counties . This annual herb typically flowers from March through June, and its colonies grow in vernal pool habitats at elevations not exceeding 100 meters above sea level. The Jepson Manual notes that
256-462: Is cross-pollinated. According to Greene, the chromosome characteristic is: 2n=12. Lasthenia conjugens relies upon insect pollination for fertilization, and dispersal of seed is largely by gravity . In undisturbed habitats, this and other species of Lasthenia are pollinated by specialist bee species, primarily in the genus Andrena . Studies in Solano County natural and restoration habitats have shown variability between visitation rates to
288-420: Is found almost exclusively in vernal pools, its behavior in controlled experiments indicates it prefers less than complete inundation. This implies that the plant actually prefers a theoretically drier environment, but is merely less successful than its competitors in surviving in drier (non-inundation) climate regimes. Lastenia conjugens is an herb whose stems are simple or freely branched and erect, attaining
320-529: Is named after the Spanish Franciscan missionary , Father Francisco Solano . "Solano" is a common surname in the north of Spain, especially in Navarra, Zaragoza, and La Rioja. Travis Air Force Base is located just east of Fairfield. Between 2017 and 2023, California Forever purchased over 50,000 acres of land in the county for an estimated $ 900 million to develop a new city. Solano County
352-725: Is one of declining numbers as well as shrinking range. According to Jepson, the historic range includes areas not in the present range: parts of the North Coast, more eastern reaches of the Sacramento Valley , more southerly parts of the San Francisco Bay Area and parts of the South Coast. Moreover, the U.S. Fish and Wildlife Service alludes to historic populations in Contra Costa County and Santa Clara County . More specifically another source defines
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#1732779816859384-584: Is the easternmost county of the North Bay . As such, it is sometimes reported by news agencies as being in the East Bay . Additionally, a portion of the county extends into the Sacramento Valley , geographically. According to the U.S. Census Bureau , the county has a total area of 906 square miles (2,350 km ), of which 84 square miles (220 km ), comprising 9.3%, are covered by water. Solano County had several cinnabar mines that were worked in
416-588: The California State Assembly , Solano County is split between the 4th Assembly District , represented by Democrat Cecilia Aguiar-Curry , and the 11th Assembly District , represented by Democrat Lori Wilson . In the California State Senate , it is in the 3rd Senate District , represented by Democrat Bill Dodd . On November 4, 2008, Solano County voted 55.82% in favor of Proposition 8 , which amended
448-598: The San Jose – San Francisco – Oakland , combined statistical area . Solano County is the northeastern county in the nine-county San Francisco Bay Area region. A portion of the South Campus at the University of California, Davis , is in Solano County. Solano County was one of the original counties of California , created in 1850 at the time of statehood. At the request of General Mariano Guadalupe Vallejo ,
480-698: The Sheriff-Coroner , District Attorney , Assessor /Recorder, Auditor-Controller , and Treasurer /Tax Collector/County Clerk, and numerous county departments and entities under the supervision of the County Administrator. As of March 2023, the members of the Solano County Board of Supervisors were: Solano County has been a Democratic stronghold in presidential and congressional elections, with Californians Richard Nixon (in 1972) and Ronald Reagan (in 1980 and 1984) being
512-400: The 130,403 households 39.9% had children under the age of 18 living with them, 55.7% were married couples living together, 13.8% had a female householder with no husband present, and 25.3% were non-families. 19.6% of households were one person and 6.5% were one person aged 65 or older. The average household size was 2.90 and the average family size was 3.33. The age distribution was 28.3% under
544-861: The 5th most racially diverse county in the United States, behind Aleutians West Census Area and Aleutians East Borough in Alaska, Queens County in New York, and Alameda County in California. The 2010 United States Census reported that Solano County had a population of 413,344. The racial makeup of Solano County was 210,751 (51.0%) White, 60,750 (14.7%) African American, 3,212 (0.8%) Native American, 60,473 (14.6%) Asian, 3,564 (0.9%) Pacific Islander, 43,236 (10.5%) from other races, and 31,358 (7.6%) from two or more races. Hispanic or Latino of any race were 99,356 persons (24.0%). At 52,641 Filipinos in
576-680: The California Constitution to ban same-sex marriages. It was the only Bay Area county to approve the initiative. In the 2008 presidential election that day, Barack Obama carried the county by a 28.5% margin over John McCain , a larger margin than statewide (24%). According to the California Secretary of State , as of February 10, 2019, Solano County has 236,028 registered voters. Of those, 106,452 (45.1%) are registered Democrats, 50,006 (21.2%) are registered Republicans , and 66,558 (28.2%) have declined to state
608-411: The age of 18, 9.2% from 18 to 24, 31.3% from 25 to 44, 21.7% from 45 to 64, and 9.5% 65 or older. The median age was 34 years. For every 100 females there were 101.5 males. For every 100 females age 18 and over, there were 100.2 males. The median household income was $ 54,099 and the median family income was $ 60,597. Males had a median income of $ 41,787 versus $ 31,916 for females. The per capita income for
640-428: The city of Vallejo , wherein there are only 8,242 Republicans (14.6%) out of 56,313 total voters compared to 33,753 Democrats (59.9%) and 12,157 voters who have declined to state a political party (21.6%). The population ranking of the following table is based on the 2020 census of Solano County. † county seat Lasthenia conjugens Lasthenia conjugens , commonly known as Contra Costa goldfields ,
672-427: The county making up 12% of the population, Solano County has the largest percentage Filipino population of any county in the United States. At the 2000 census there were 394,542 people, 130,403 households, and 97,411 families in the county. The population density was 476 inhabitants per square mile (184/km ). There were 134,513 housing units at an average density of 162 per square mile (63/km ). The racial makeup of
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#1732779816859704-490: The county was $ 21,731. About 6.1% of families and 8.3% of the population were below the poverty line , including 10.3% of those under age 18 and 6.3% of those age 65 or over. The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense (2011). The Government of Solano County is defined and authorized under the California Constitution and law as
736-415: The county was 56.4% White, 14.9% Black or African American, 0.8% Native American, 12.8% Asian, 0.8% Pacific Islander, 8.0% from other races, and 6.4% from two or more races. 17.64% of the population were Hispanic or Latino of any race. 8.5% were of German , 6.4% Irish and 6.0% English ancestry according to Census 2000 . 75.7% spoke English , 12.1% Spanish and 6.6% Tagalog as their first language. Of
768-706: The county was named for Chief Solano of the Suisun people , a Native American tribe of the region and Vallejo's close ally. Chief Solano at one time led the tribes between the Petaluma River and the Sacramento River . The chief was also called Sem-Yeto , which signifies "brave or fierce hand." The chief was given the Spanish name Francisco Solano during baptism at the Catholic Mission, and
800-506: The extended historic San Francisco Bay Area range to have extended from Richmond to Palo Alto By the year 1995 the populations of L. conjugens had declined to the point where there were only five colonies extant, all of which were within Napa and Solano Counties. Contra Costa goldfields has been studied extensively with regard to genetic diversity of colonies. Some early findings were that repeated seedings in restoration colonies enhanced
832-564: The first half of the twentieth century, including the Hastings Mine and St. John's Mine . Solano County has a number of rare and endangered species , including the Delta green ground beetle , the wildflower Lasthenia conjugens , commonly known as Contra Costa goldfields, and the annual plant Legenere limosa or false Venus' looking glass. Solano County is served by several transit agencies: Each agency interconnects with
864-410: The five to ten millimeter ligules are yellow as well. The yellow disk flowers are numerous, and anther tips are linear to somewhat ovate. Style tips are triangular. The corollae are typically five-lobed. Style tips may be triangular or round, but typically hair-tufted. The glabrous club-shaped fruits are less than 1.5 millimeters across, black or gray in color, absent a pappus structure. The species
896-645: The only Republicans to win the county since 1928. However, the northern area of Solano County including Vacaville and Dixon have begun shifting right as evidenced by the 2022 midterms, voters in Congressional District 4 favored the Republican candidate 50.3% to 49.7%. Solano County is split between California's 4th , 7th and 8th congressional districts, represented by Mike Thompson ( D – St. Helena ), Doris Matsui ( D – Sacramento ) and John Garamendi ( D – Walnut Grove ) respectively. In
928-602: The others, enabling transit trips throughout the county. Service also connects with BART stations in Contra Costa County. Transit links are provided to Napa, Yolo and Sacramento counties as well. Greyhound and Amtrak provide long-distance intercity service. General aviation airports in Solano County that are open to the public are the Nut Tree Airport and Rio Vista Municipal Airport . A 2014 analysis by The Atlantic found Solano County to be
960-532: The present distribution is limited to the deltaic Sacramento Valley , principally Napa and Solano Counties, but the historic range of L. conjugens is known to be significantly wider. In any case, historically the range has included parts of the North Coast , Sacramento Valley, and San Francisco Bay Area as well as the South Coast. Alternatively and less frequently this taxon has been referred to as Baeria fremontii var. conjugens . Even though this plant
992-414: The resultant population of Lasthenia conjugens and hence ultimate survival. The subsequent finding has been made that genetic diversity has been able to be replicated for introduced colonies in a restoration environment, implying favorable long-term stability and viability for introduced colonies. In addition to the federal status as an endangered species it gained on June 18, 1997, Lasthenia conjugens
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1024-516: The two types of colonies; however, plant propagation rates were found to be similar between natural colonies and introduced ones, implying pollination is not a limiting factor of propagation. An alternative conclusion is that members of one particular insect family, Sciaridae , are also efficient pollinators of L. conjugens , since it was the only insect family to visit the restoration colonies in significant numbers (the specialist bees are absent from these areas). The population trend for L. conjugens
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