soil vapor Articles | Environmental XPRT

Common Treatment Train for Nonhalogenated SVOCs

A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for nonhalogenated SVOCs is illustrated below. A thermally enhanced soil vapor extraction system is used to pull SVOC vapor from the contaminated soil. Electrodes are installed in the contamination zone to enhance the desorption of SVOCs from the contaminated soil. The ...

Dec. 31, 1996

By Federal Remediation Technologies Roundtable

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. ...

Jul. 5, 2011

By Directional Technologies, Inc.

In-situ Technology for Clean up of Halogen Contaminated Sites - Process West case study

Halogenated volatile organic solvents are found in the soil or ground-water at many former and active industrial sites. Fortunately highly effective remediation technologies are available to restore these former brownfields to a healthy state. The range of technologies includes the traditional approach where the contaminated soil is excavated and the volatile halogenated contaminants are ...

Nov. 30, 2013

By Bionomic Industries Inc.

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 ...

Sep. 2, 2016

By Global Environmental Engineering

Soil Sampling under Buildings and Solving Vapor Intrusion using Horizontal Drilling

The Issue: The New Jersey Department of Environmental Protection (NJDEP) mandated soil and groundwater sampling under an active pharmaceutical company manufacturing building in order to address vapor intrusion inside the building. Installation of vertical borings and wells through the building slab was not practicable without profound disruption of manufacturing activities inside the building. ...

Oct. 21, 2010

By Directional Technologies, Inc.

Vapor intrusion and indoor air quality due diligence during property transactions

Vapor intrusion (i.e. the migration of volatile chemicals from contaminated soil and/or ground water through the subsurface into overlying building structures) as a contributing indoor air has become a growing concern for property owners and prospective purchasers in recent years as it can cause significant indoor air quality problems. This is largely due to the increased focus on this issue by ...

May 17, 2009

By Environmental Waste Management Associates LLC (EWMA)

Superior voc protection for project situated on former railroad site case study

Project: Smith Performing Arts Center Location: Las Vegas, NV Products: Liquid Boot Gas Vapor Mitigation System, GeoVent™ Gas Venting System, Ultraseal Waterproofing System Background: Vapor intrusion has become a significant environmental issue for regulators, industry leaders, and concerned residents nationwide. The ...

Feb. 14, 2013

By CETCO

Release From Above Ground Storage Tank

Soils and Environment Services,Inc. conducted Petroleum Vapor Assessment, Vapor Remediation and Vapor Corrective Action Plan for a reported release from a residential Aboveground heating oil Storage Tank (AST) at a residence in Virginia. The fumes were found to reach the second level of the house and even in the electrical outlets as the release was apparently trapped in the cinder block wall. ...

Aug. 11, 2013

By Sarva Bio Remed, LLC

Thermally Enhanced Soil Vapor Extraction

Introduction Thermally enhanced SVE is a full-scale technology that uses electrical resistance/electromagnetic/fiber optic/radio frequency heating or hot-air/steam injection to increase the volatilization rate of semi-volatiles and facilitate extraction. Thermally enhanced SVE is normally a short- to medium-term technology. Electrical Resistance Heating Electrical resistance heating uses ...

Dec. 31, 1996

By Federal Remediation Technologies Roundtable

Common Treatment Train for Nonhalogenated VOCs

A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for nonhalogenated VOCs is illustrated below. A soil vapor extraction system is used to pull VOC vapor from the contaminated soil. An air sparging system delivers air below the water table to enhance bioremediation. After passing through a liquid/vapor separator, the VOC ...

Dec. 31, 1996

By Federal Remediation Technologies Roundtable

Redwood City Case (In Situ Gas Thermal Remediation + C3 Technology (GTR™+C3))

The former Dry Cleaner site was located in Redwood City, California, contaminated by tetrachloroethylene (PCE). Affected soils also contained low levels of PCE degradation byproducts, such as trichloroethylene (TCE), and were presumed to have an approximate extent of 384 square feet (16’ x 24’ area) to a depth of 10 feet beneath the building. The remediation goal was driven by vapor ...

Oct. 28, 2014

By GEO Environmental Remediation Company

Trailer Mounted Afterburner for Soil Remediation

The Problem A major Vapor & Odor Control company needed a portable solution to clean the soil leftover at old fuel stations. The Process Soil Remediation Afterburners & Oxidizers are manufactured to treat soil containing contaminates such as petroleum hydrocarbons, with diesel oil, gasoline, aromatic hydrocarbons, solvents and many other ...

Sep. 16, 2013

By Epcon Industrial Systems, LP

Air Sparging - Technology Overview

Air sparging involves injecting a gas (usually air/oxygen) under pressure into the saturated zone to volatilize groundwater contaminants and to promote biodegradation in saturated and unsaturated soils by increasing subsurface oxygen concentrations. Vola tilized vapors migrate into the vadose zone where they are extracted via vacuum, generally by a soil vapor extraction system. The term ...

Dec. 31, 1995

By Groundwater Remediation Technologies Analysis Center

How Close to Contamination does a Property need to be for Vapor Intrusion to be a Concern?

Cinnaminson, NJ, February 19, 2013 There are numerous sites across North America that have contaminated soil or groundwater due to manmade pollution. Some of these sites have been a problem for decades and as communities have grown, more and more residential and commercial properties have been built above or near these areas. A major issue for properties built near these contaminated ...

Feb. 18, 2013

By EMSL Analytical, Inc.

Soil remediation system - Trailer mounted portable afterburner

The Problem A major Vapor & Odor Control company needed a portable solution to clean the soil leftover at old fuel stations. portable afterburner The Process Soil Remediation Afterburners & Oxidizers are manufactured to treat soil containing contaminates such as petroleum hydrocarbons, with diesel oil, gasoline, ...

Oct. 14, 2011

By Epcon Industrial Systems, LP

Properties and Behavior of Fuels

Fuel contaminants are generally nonhalogenated. Information presented for nonhalogenated VOCs and nonhalogenated SVOCs may also be appropriate for many of the fuel contaminants presented in this subsection. Contamination by fuel contaminants in the unsaturated zone exists in four phases: vapor in the pore spaces; sorbed to subsurface solids; dissolved in water; or as NAPL. The nature and extent ...

Dec. 31, 1996

By Federal Remediation Technologies Roundtable

Soil Vapor Extraction (In Situ)

Introduction Soil vapor extraction (SVE) is an in situ unsaturated (vadose) zone soil remediation technology in which a vacuum is applied to the soil to induce the controlled flow of air and remove volatile and some semivolatile contaminants from the soil. The gas leaving the soil may be treated to recover or destroy the contaminants, depending on local and state air discharge regulations. ...

Dec. 31, 1996

By Federal Remediation Technologies Roundtable

PCE and TCE Remediation Continues Years After Injection

Site Summary Subsurface investigations at this dry cleaning facility revealed elevated levels of PCE and TCE in groundwater and soil. Accelerated bioremediation using HRC was selected for use at the subject site as it offered a groundwater remediation method that would not interrupt on-going facility operations while effectively supporting the degradation of the contaminants. Approximately 250 ...

Dec. 31, 2003

By Regenesis

Prominant developer chooses cetco gas vapor barrier for chromium protection case study

Project: Droyers Point Location: Jersey City, NJ Products: Liquid Boot® Gas Vapor Mitigation System Background: During the summer of 2004, construction commenced on a multi-family housing plan, developed by K. Hovnanian Homes. This 23-acre Brownfield redevelopment project included 30 new three-story townhouse buildings ...

Feb. 14, 2013

By CETCO

CETCO vapor mitigation system chosen as voc protection barrier for school campus case study

Project: Mott Haven School Location: Bronx, NY Products: Liquid Boot® Gas Vapor Mitigation System Background: The Mott Haven School Campus was to be built on a former manufacturing site with residual contaminants in the soil. Challenge: The site for the school development underwent a series of ...

Feb. 14, 2013

By CETCO

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