sparge well Articles
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Soil and Ground Water Remediation Case Study
On this State Funded Clean-Up project, Global was the project engineer and was responsible for the design of an air sparging/soil vapor extraction remediation system. The system included five soil vapor extraction wells and twelve sparging wells that operated on a rotating schedule. One of the soil vapor extraction wells and nine of the sparging wells were installed as horizontal wells beneath ...
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Horizontal Air Sparge Wells Solve Access Limitations beneath Air Field Tarmac
Air Force Base tarmac is a double-edged sword with respect to environmental remediation. Concrete thicker than at commercial airports virtually eliminates infiltration and limits migration of jet fuel constituents in groundwater, but source material in the vadose zone remains indefinitely, extending the life of the groundwater plume. Horizontal air sparge wells are an effective means of ...
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Air sparge system - Case Study
ERC was contracted to install an air sparge system in Central Ohio. Air sparging is an in situ remedial technology that reduces concentrations of volatile constituents in petroleum hydrocarbons adsorbed to soils and dissolved in groundwater. This involves the injection of contaminant-free air into the subsurface saturated zone, enabling a phase transfer of hydrocarbons from a dissolved state to a ...
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Horizontal Soil Vapor Extraction and Horizontal Air Sparge Wells Case Study-
Directional Technologies Is The Expert At Horizontal Soil Vapor Extraction A horizontal soil vapor extraction well and two horizontal air sparge wells rapidly remediate contamination in situ under a research and development facility. These horizontal wells were installed by environmental directional driller Directional Technologies with no access to inside this sensitve facility. This site was ...
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Project - Large in-situ groundwater treatment plant - Oil refinery, Saudi Arabia
Industry: Oil and Gas Timeframe: 9 Months Location: Saudi Arabia Value: €540K Challenge Geostream was asked to deliver a large in-situ groundwater treatment plant for a pilot trial on an oil refinery. The plant would target significant dissolved phase hydrocarbon contamination and LNAPL in groundwater across the site, using circa 100 recovery/sparge well points. Before installation ...
By Geostream UK
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Case study - Rapid removal of chloroethenes at industrial sites
Description Air sparging with trenches had failed to remove groundwater and soil contamination at an industrial Superfund site in Piedmont soils in South Carolina. The major contaminants of concern were cis 1,2-dichloroethene (DCE) and trichloroethene (TCE) ranging from 0.5 to 2.0 mg/L. The treatment area was approximately 15,000 square feet. Ozone sparging was chosen as preferred ...
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Case Study: Why Horizontal Ozone Sparge
To avoid costly business interruption and site disturbance, Ganesh Kurse with G & RK Consulting Associates, recommended a non-invasive remedial approach by installing horizontal ozone sparge wells with directional drilling techniques. Although horizontal ozone sparging wells were a new remedial technology to G & RK and the State of Alabama’s underground storage tank (UST) ...
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Evaluation of a Horizontal Well
Background: Air Sparging Air sparging is an in-situ remediation technology where air is injected into the saturated zone of an aquifer. It is an alternative to conventional ex-situ pump and treat systems for remediation of contaminated ground water. It is necessary to understand the pattern of air flow that will occur in the subsurface in order to determine the optimal placement, number, and ...
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Locating Discontinuous LNAPL Contamination GeoTrax Survey - Case Study
Bottom Line: Vertically oriented anomalies confirmed to be LNAPL and related dissolved phase contamination; these vertical features would be hard to detect/bound using wells alone (without a high resolution scanning tool like GeoTrax SurveyTM). Remediation was ongoing at this gas station site; horizontal air sparge/SVE wells had been installed and were operating before the GeoTrax ...
By Aestus, LLC
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DTI installs 3 blind horizontal remediation wells in cobble
The Issue An active retail gas station next to a wetland area has benzene and trimethylbenzene plumes in a water table aquifer containing sand, gravel and cobbles. Rock fragments and boulders several feet in diameter lie in the vadose zone, between the ground surface and the water table. Business at the gas station would slow down or stop for an extended period of time if a vertical air sparge ...
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In Situ Physical/Chemical Treatment for Ground Water and Leachate
The main advantage of in situ treatments is that they allow ground water to be treated without being brought to the surface, resulting in significant cost savings. In situ processes, however, generally require longer time periods, and there is less certainty about the uniformity of treatment because of the variability in aquifer characteristics and because the efficacy of the process is more ...
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Active Taxiway Remediation
Introduction: How do you remediate beneath an active airport taxiway without interfering with commercial airliners and United States Air Force cargo planes taxiing through your work area at 60 miles per hour? This was the problem facing the Department of Defense (DoD) at a site impacted with jet fuel. To solve the problem, our long-time client, FPM Remediations, Inc., used their knowledge of ...
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Remediation of Free Product with Horizontal Bioremediation Systems - Case Study
Project Location: Northern New York Client: Private Corporation – Petroleum Distribution Center Contamination: Gasoline Site Size: 10+ Acres Project Description: Seeking to excavate a trench to install an underground pipe, the client’s contractor severed a buried, and greatly mislocated, 10-inch gasoline header. The header was under significant head pressure, being fed by a ...
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Introduction to Ozone Injection Technology
Untitled Document Ozone is a highly reactive chemical that has proven to be effective in destroying a wide variety of organic chemicals, including MtBE and chlorinated VOCs. Ozone destroys organic chemicals through the process of chemical oxidation, which breaks the targeted organic chemical down into carbon dioxide and water. Ozone is commonly used in aboveground ...
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Case study - An air/ozone Sparge curtain to protect a municipal supply well
Description Releases of petroleum contaminants from a retail gasoline station in a medium-sized California Central Valley town threatened a municipal supply well immediately adjacent and approximately 200 ft downgradient to the station. Methyl tert-butyl ether (MTBE) was present in groundwater concentrations up to 30,000 micrograms per liter (µg/L) and GRO up to 33,000 µg/L in the ...
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Gasoline pipeline break - Sun Oil Company
LOCATION: Ambler, PAPROJECT DATE: July, 1972 to January, 1974CLIENT: Sun Oil Company BACKGROUND: A pipeline break spilled an estimated 3,186 barrels of high octane gasoline into an aquifer composed of a highly fractured dolomite. The gasoline was contained by pumping nearby wells. Physical recovery of the gasoline continued until no longer productive an estimated 1,000 barrels (42,000 ...
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Case study - World`s largest remediation site
Overview Hong Kong's Kai Tak Airport, the world's busiest airport in 1997, became the world's largest remediation site once it was closed. When the airport was decommissioned in 1999 in favor of the new Chek Lap Kok Airport, the government planned to rapidly clean up the site for commercial and residential development. After many years of soil penetration by various fuels and chemicals, the site ...
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Rushing Remediation - Cometabolic bioremediation accelerates natural degradation of groundwater and soil contaminants
Untitled Document Field studies have shown that many organic contaminants degrade naturally by microorganisms present in soil and groundwater. This naturally occurring bioremediation, known as natural attenuation, has been accepted as a passive remediation process for contaminated soil and groundwater. When the natural degradation is insufficient to meet remediation ...
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Bioremediation With Horizontal Injection for BTEX and Naphthalene Remediation - Case Study
In situ remediation is a contact sport, requiring contact between the microbes and contamination. Clay-rich soils are particularly challenging as the low permeability limits effective distribution of inoculants. While numerous closely-spaced injection points can improve the distribution of inoculants, this approach is often not possible at active properties and can be costly. Horizontal drilling ...
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VC2 Vertebrae AS/SVE under highway - Case Study
SITE Active Fueling Station and Farm Store, Greeley Colorado CONTAMINATION Diesel and Gasoline range organics including LNAPL. The LNAPL plume is approximately 20,000 square feet. The dissolved-phase plume, above RBSLs, is approximately 40,000 square feet. OBJECTIVE The design involved 5 VertebraeTM well systems to provide targeted air sparging (AS) utilizing 29 independent well segments and ...
By EN Rx, Inc.
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