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Vadose Articles & Analysis
72 articles found
Hartman wrote investigation work scope, oversaw soil gas sampling program to define PCE vadose zone contamination, conducted on-site indoor air analysis, set up continuous monitoring of indoor air in the commercial building, oversaw indoor air canister sampling programs of building & ...
Frequently after ground water is remediated, seasonal fluctuation of the water table through the contaminated vadose zone recharges the concentrations of these compounds. The result is seasonal fluctuation in the ground water concentrations. ...
Case Summary After three underground storage tanks were removed from the location of a convenience store, investigation showed that petroleum contamination was present in a small area near the former dispenser island. The vadose-zone contaminated soil was excavated and disposed off-site. Ground water monitoring showed that the ground water impact was limited to a small area near ...
Remediation Goals: 483 lbs VOC removal or 1,640,000 kWh ...
Convenience Store, Hamilton County, Florida, FDEP ID 8518526 After three underground storage tanks were removed from the location of a convenience store, investigation showed that petroleum contamination was present in small area near the former dispenser island. The vadose-zone contaminated soil was excavation and disposed off-site. Ground water monitoring showed that the ground ...
Between April and December 2004, approximately 16,000 pounds (lbs) of VOC’s were removed from the vadose and shallow groundwater zones. In October 2004, a remedial action plan and WDR permit were approved to inject sodium and potas-sium permanganate. ...
They have been used to deliver chemicals to the subsurface both in the vadose zone and beneath the water table or used to simply air sparge a shallow groundwater system to aid in the removal of hydrocarbons. ...
Pump and treat methods fail to address the source of the contamination in the vadose zone. Although the construction of passive permeable treatment walls containing zero. ...
Hydrologist/Soil Scientist for Stevens Water Monitoring Systems Course Syllabus History/ About Stevens Water Monitoring: 20 Minutes History of Stevens, founded in 1911 Our mission to serve the customer Communication products update Sensors and accessories Soil Geomorphology: 10 Minutes Soil taxonomy Soil development Horizons and vertical profiles Global ...
Once the water is in the aquifer, it will travel down gradient and eventually discharge into a stream or lake. The vadose zone is the soil above the water table and represents a hydrological regime that can hold large amounts of water. Once water enters the vadose zone, it will only move in one dimension – up and down. In unsaturated soils, water will ...
Each AS well was coupled with a horizontal SVE well installed directly above the AS well at depths of approximately 20 feet BLS within the vadose zone. The horizontal AS/SVE wells were constructed of 4-inch HDPE with software engineered well screen for desired airflow rates. ...
Horizontal injection wells can be used to treat vadose zone contamination with ISCO, bio-amendment injection, or high vacuum SVE. ...
A one-dimensional vadose zone model was used to simulate flow under natural boundary conditions. ...
The source area was aggressively treated using soil vapor extraction for impacted vadose zone soils and a downgradient in situ treatment barrier – sparge curtain – at the property boundary. ...
Moisture distribution in vadose zone soil is the most important parameter for land productivity and vegetation status of ecological systems, and is sensitive to temperature variation. ...
Paul Bianco Lithology: Clean sand in both the vadose and saturated zones. Hydrology: Groundwater depth at 12 ft below grade surface (bgs). ...
The site soil lithology in the vadose and saturated zones is described as an overburden fill and/or urban fill material underlain by glacial till. ...
He is a past President of the Texas Council of Chapters of the Soil and Water Conservation Society, and past associate editor of Agronomy Journal and of the Vadose Zone Journal, and he currently is on the Editorial Board of Agricultural Water Management. ...
Remedies to address this challenge recently involved excavation and offsite disposal of remaining filter cake and contaminated shallow surface soil, in situ thermal remediation (ISTR) of deeper vadose zone and saturated zone soil and groundwater, and in situ enhanced anaerobic bioremediation (EAB) of groundwater. ...
Army Corps of Engineers (USAGE) Environmental Remediation Services Multiple Award Task Order Contract (MATOC), to perform electrical resistance heating (ERH) for the remediation of volatile organic compounds (VOCs) in the vadose zone soil and shallow groundwater at Operable Unit 1 (Well 12A) of the Commencement Bay - South Tacoma Channel Superfund site in Tacoma, Washington. ...