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Upper Occoquan Sewage Authority
The Millard H. Robbins, Jr. Water Reclamation Plant, which is operated by the Upper Occoquan Service Authority (UOSA), is located in Centreville, Virginia and it was formerly known as the Upper Occoquan Sewage Authority. UOSA serves the western portions of Fairfax and Prince William Counties, and the Cities of Manassas and Manassas Park. The sewage treatment plant includes primary-secondary treatment and the following advanced wastewater treatment processes: chemical clarification, two-stage recarbonation with intermediate settling, multimedia filtration, granular activated carbon adsorption, chlorination for disinfection and dechlorination. The plant’s rated capacity is per day (mgd). Discharge permit UOSA operates under a Virginia Pollutant Discharge Elimination System (VPDES) Permit, which is issued by the Department of Environmental Quality (DEQ). The Permit limitations listed in the table below are among the most stringent in the State of Virginia and possibly in the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centreville, Virginia
Centreville is a census-designated place (CDP) in Fairfax County, Virginia, United States and a suburb of Washington, D.C. The population was 73,518 as of the 2020 census. Centreville is approximately west of Washington, D.C. History Colonial period Beginning in the 1760s, the area was known as Newgate due to the popularity of the conveniently located Newgate tavern. William Carr Lane operated the tavern and was co-proprietor of a nearby store with James Lane, Jr. The Lanes sold convicted servants, which may explain why the tavern had the same name as a London prison. The small stream that passed near the tavern was named the River Thames, another London association. Another reason for it being named Newgate, was the fact that it was a "new gate" to the western territories. Federal period The town of Centerville (shortly thereafter spelled Centreville) was established in 1792 on the turnpike road at the village of Newgate by the Virginia General Assembly in response to petit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algal Bloom
An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. The term ''algae'' encompasses many types of aquatic photosynthetic organisms, both macroscopic multicellular organisms like seaweed and microscopic unicellular organisms like cyanobacteria. ''Algal bloom'' commonly refers to the rapid growth of microscopic unicellular algae, not macroscopic algae. An example of a macroscopic algal bloom is a kelp forest. Algal blooms are the result of a nutrient, like nitrogen or phosphorus from various sources (for example fertilizer runoff or other forms of nutrient pollution), entering the aquatic system and causing excessive growth of algae. An algal bloom affects the whole ecosystem. Consequences range from the benign feeding of higher trophic levels to more harmful effects like blocking sunlight from reaching other organ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Battle Of Bull Run
The First Battle of Bull Run (the name used by Union forces), also known as the Battle of First Manassas (the name used by Confederate forces), was the first major battle of the . The battle was fought on July 21, 1861, in , just north of the city of Manassas and about thirty miles west-southwest of Washi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Civil War
The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States. It was fought between the Union ("the North") and the Confederacy ("the South"), the latter formed by states that had seceded. The central cause of the war was the dispute over whether slavery would be permitted to expand into the western territories, leading to more slave states, or be prevented from doing so, which was widely believed would place slavery on a course of ultimate extinction. Decades of political controversy over slavery were brought to a head by the victory in the 1860 U.S. presidential election of Abraham Lincoln, who opposed slavery's expansion into the west. An initial seven southern slave states responded to Lincoln's victory by seceding from the United States and, in 1861, forming the Confederacy. The Confederacy seized U.S. forts and other federal assets within their borders. Led by Confederate President Jefferson Davis, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reclaimed Water
Water reclamation (also called wastewater reuse, water reuse or water recycling) is the process of converting municipal wastewater Sewage (or domestic sewage, domestic wastewater, municipal wastewater) is a type of wastewater that is produced by a community of people. It is typically transported through a sewer system. Sewage consists of wastewater discharged from residen ... (sewage) or Industrial wastewater treatment, industrial wastewater into water that can be reused for a variety of purposes. Types of reuse include: urban reuse, agricultural reuse (irrigation), environmental reuse, industrial reuse, planned potable reuse, de facto wastewater reuse (unplanned potable reuse). For example, reuse may include irrigation of gardens and agricultural fields or replenishing surface water and groundwater (i.e., groundwater recharge). Reused water may also be directed toward fulfilling certain needs in residences (e.g. Flush toilet, toilet flushing), businesses, and industry, and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodbridge, Virginia
Woodbridge is a census-designated place (CDP) in Prince William County, Virginia, United States, located south of Washington, D.C.. Bounded by the Occoquan and Potomac rivers, Woodbridge had 44,668 residents at the 2020 census. Woodbridge offers a variety of amenities for residents and visitors, including Potomac Mills shopping mall and Stonebridge at Potomac Town Center. Woodbridge is served by the Prince William County Public Schools, and the Woodbridge campus of Northern Virginia Community College borders the district. Sentara Northern Virginia Medical Center, a non-profit hospital, formerly Potomac Hospital, recently expanded and now has the capacity to serve 183 patients. Transportation includes access to Interstate 95, two VRE commuter train stations, bus service, and a local "slugging" system, offering residents a variety of transit options. Woodbridge offers a wide range of recreational opportunities for resident and visitors. The Occoquan Bay National Wildlife Refu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lorton, Virginia
Lorton is a census-designated place (CDP) in Fairfax County, Virginia, United States. The population was 18,610 as of the 2010 census. History Lorton is named for a village in the Lake District National Park, Cumbria, in England. Joseph Plaskett of the Cumbrian village settled in southern Fairfax County, running a general store and opening the Lorton Valley Post Office on November 11, 1875. Before the identity of Lorton, the commercial center was Colchester, and the spiritual and historical center of the community around which the leading citizens of the time revolved was Pohick Church, where George Washington and George Mason were at times members of the vestry. From the early 20th century until November 2001, Lorton was the site of a District of Columbia correctional facility called the Lorton Reformatory which, among other things, detained approximately 168 women from the women's suffrage movement from the Washington, D.C. area from June to December 1917. For the 2010 census ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Water
Surface water is water located on top of land forming terrestrial (inland) waterbodies, and may also be referred to as ''blue water'', opposed to the seawater and waterbodies like the ocean. The vast majority of surface water is produced by precipitation. As the climate warms in the spring, snowmelt runs off towards nearby streams and rivers contributing towards a large portion of human drinking water. Levels of surface water lessen as a result of evaporation as well as water moving into the ground becoming ground-water. Alongside being used for drinking water, surface water is also used for irrigation, wastewater treatment, livestock, industrial uses, hydropower, and recreation. For USGS water-use reports, surface water is considered freshwater when it contains less than 1,000 milligrams per liter (mg/L) of dissolved solids. There are three major types of surface water. Permanent (perennial) surface waters are present year round, and includes lakes, rivers and wetlands (marshe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairfax County Water Authority
Fairfax County Water Authority (FCWA or more recently Fairfax Water for short) is the main water company in the Northern Virginia region of the United States, and one of the four major water providers in the Washington, D.C. metropolitan area (the other three being Virginia American Water, the Washington Aqueduct and the Washington Suburban Sanitary Commission). Fairfax Water serves most of the populated areas of Fairfax County, and also serves neighboring communities of Alexandria, Prince William County, Virginia and Loudoun County, Virginia through an interconnection with Virginia American Water, which purchases water through wholesale agreements. It serves drinking water to 1.5 million people. FCWA does not provide sanitary sewer service; this is left to the individual jurisdictions it serves. History FCWA traces its history back to the 1950s. At the time, Fairfax County was a mostly rural county that was quickly becoming suburban, and was served by a number of small, privately ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drinking Water
Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity level, age, health-related issues, and environmental conditions. This 2004 article focuses on the USA context and uses data collected from the US military. Recent work showed that the most important driver of water turnover which is closely linked to water requirements is energy expenditure. For those who work in a hot climate, up to a day may be required. Typically in developed countries, tap water meets drinking water quality standards, even though only a small proportion is actually consumed or used in food preparation. Other typical uses for tap water include washing, toilets, and irrigation. Greywater may also be used for toilets or irrigation. Its use for irrigation however may be associated with risks. Water may also be unacceptable due to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bull Run (Occoquan River)
Bull Run is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 15, 2011 tributary of the Occoquan River that originates from a spring in the Bull Run Mountains in Loudoun County, Virginia, and flows south to the Occoquan River. Bull Run serves as the boundary between Loudoun County and Prince William County, and between Fairfax County and Prince William County. Bull Run is primarily associated with two battles of the American Civil War: the First Battle of Bull Run (July 21, 1861) and the Second Battle of Bull Run (August 28–30, 1862), both Confederate victories. A narrow part of the creek called Yates Ford (near Manassas) is the scene of the Battle of Occoquan, and downstream about one mile is the current Yates Ford Road bridge between Fairfax and Prince William counties. See also *List of rivers of Virginia This is a list of rivers in the U.S. state of Virginia. By drainage basin This list is arranged by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metcalf And Eddy
AECOM (, ; formerly AECOM Technology Corporation) is an American multinational infrastructure consulting firm. AECOM has approximately 51,000 employees, and is number 157 on the 2019 Fortune 500 list. The company's official name from 1990 to 2015 was AECOM Technology Corporation, and is now AECOM. The company is listed on the New York Stock Exchange (NYSE) under the ticker symbol ACM and on the Frankfurt Stock Exchange under the ticker symbol E6Z. In August 2021, AECOM announced plans to relocate its global headquarters from Los Angeles, California to Dallas, Texas. History AECOM traces its origins to Kentucky-based Ashland Oil & Refining Company, which in turn grew out of Swiss Drilling Company, founded in Oklahoma in 1910 by J. Fred Miles. He gained control of some 200,000 acres and formed Swiss Oil Company in Lexington. In 1924, Miles launched a refining operation called Ashland Refining Company, headed by Paul Blazer. While the parent company struggled, leading ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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