Soil Vapor Extraction Articles on Environmental XPRT

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. ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Soil Vapor Extraction (Ex Situ)

Introduction: Ex situ soil vapor extraction (SVE) is a full-scale technology in which soil is excavated and placed over a network of aboveground piping to which a vacuum is applied to encourage volatilization of organics. Soil piles are generally covered with a geomembrane to prevent volatile emissions and to prevent the soil from becoming saturated by precipitation. The process includes a ...

Oct. 1, 1997

By Federal Remediation Technologies Roundtable

Horizontal Soil Vapor Extraction Wells

As part of a Corrective Action Plan (CAP) submitted to NYSDEC, a consultant selected Horizontal Soil Vapor Extraction Wells (HSVE) to expand an on-site vapor extraction system in New York. Directional Technologies worked with the consultant on the horizontal well screen design and well layout of three (3) HSVE wells, spaced 50-feet apart, and constructed with 4-inch Schedule 80 PVC materials. Due ...

Apr. 19, 2017

By Directional Technologies, Inc.

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 ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Steam Injection with Soil Vapor Extraction Remediation

Project description for soil vapor extraction / steam injection remediation by GWS Environmental Contractors Inc. The use and implementation of steam injection remediation on No 2. heating oil. Project Location: 18 Institute Street Freehold, NJ. Project: Residential Fuel Oil Remediation Project using Steam/SVE. I. Extent of Contamination: Fuel oil contamination exists in the rear yard ...

Mar. 12, 2015

By GWS Environmental Contractors Inc.

Off-Gas Treatment Technologies for Soil Vapor Extraction Systems: State of the Practice

Untitled Document EXECUTIVE SUMMARY This document provides state-of-the-practice information on off-gas treatment technologies for soil vapor extraction ...

Jun. 1, 2006

By US EPA - Environmental Protection Agency

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. 6, 2011

By Directional Technologies, Inc.

Chlorinated solvent soil vapor extraction (SVE) remediation case study 2005

Project Description An active industrial facility in South Central Los Angeles was impacted by tetrachloroethylene (PCE) and trichloroethylene (TCE; former staging area degreasing) operations as a part of its operations. A phased approach to soil vapor extraction (SVE) remediation was employed: the goal of Phase I was to attain high contaminant mass removal rates with very high VOC vapor ...

Oct. 13, 2010

By GEO Inc

Andover, Vapor Extraction and Refrigerated Condensation Case study

Vapor Extraction and Refrigerated Condensation was used as a primary source removal technology to remediate high concentrations of recalcitrant chlorinated solvent compounds at the WDE Site in Minnesota. The use of Refrigerated Condensation has achieved high mass removal rates and will reduce the lifecycle costs and time of remediation. History 6,600 drums of hazardous ...

May 13, 2014

By In-Situ Oxidative Technologies, Inc (ISOTEC) - Soil & Groundwater Remediation

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. 22, 2010

By Directional Technologies, Inc.

In-well Vapor Stripping - Technology Overview

In-well vapor stripping technology involves the creation of a ground-water circulation pattern and simultaneous aeration within the stripping well to volatilize VOCs from the circulating ground-water. Air-lift pumping is used to lift ground-water and strip it of contaminants. Contaminated vapors may be drawn off for aboveground treatment or released to the vadose zone for biodegradation. ...

Jan. 1, 1997

Detection of petroleum-contaminated soils using Equilibrium Headspace and Methanol Extraction

Petroleum spills and leaking underground storage tanks comprise a significant portion of remediation projects. Soil removal and disposal determined based on the contaminants and concentrations present. Specific target analytes are associated with this type of contamination. A number of these compounds are classified as volatile organics and are used to assess the severity of the contamination, ...

Oct. 28, 2011

By PerkinElmer, Inc.

Soil Fracturing

Introduction Fracturing is an enhancement technology designed to increase the efficiency of other in situ technologies in difficult soil conditions. The fracturing extends and enlarges existing fissures and introduces new fractures, primarily in the horizontal direction. When fracturing has been completed, the formation is then subjected to vapor extraction, either by applying a vacuum to all ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Significant Benefits of Augmenting an Extractive Remedial System with RegenOx™

Recently, in the United Kingdom, a combined strategy was implemented to synergistically increase the treatment rate and efficiency of subsurface remediation while also reaching an inflexible remedial deadline cost-effectively. Central to this was the novel exploitation of a feature of RegenOx that was initially designed for an alternative purpose. The remedial strategy is now being widely used on ...

Oct. 31, 2007

By REGENESIS

Soil and groundwater remediation

At a site in northern Indiana on behalf of a multinational client, Troy Risk operated a groundwater remediation system to cleanup the source of chlorinated solvent impact to a groundwater aquifer system. Prior to 1988, the site was occupied by a manufacturing facility. In March 1995, chlorinated volatile compounds (CVOCs) were detected pursuant to due diligence for real estate refinancing. From ...

Sep. 22, 2012

By Troy Risk, Inc.

Soil and Groundwater Clean-up

CLIENT: Homeowner/Insurance Company LOCATION: Hopatcong, NJ PROJECT TYPE: Soil and Groundwater Clean-up PROJECT DESCRIPTION: Brennan Environmental, Inc. was retained jointly by a homeowner and their insurance company to complete a soil and groundwater clean-up. An aboveground heating oil tank burst in the basement of their home, spilling approximately 200 gallons of oil onto the floor of ...

May 20, 2015

By Brennan Environmental, INC.

Vapor intrusion mitigated through solar-powered exhaust systems

EPA Region 6 undertook a Superfund removal action earlier this year at the Delfasco Forge site in Grand Prairie, TX, to address trichloroethene (TCE) vapor migrating from a groundwater plume. Region 6 and the State had determined after extensive site investigations that technologies such as soil vapor extraction or natural attenuation would require several years to remove or reduce the plume ...

Sep. 1, 2009

By USEPA - Technology Innovation and Field Services Division (TIFSD)

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. 17, 2013

By Epcon Industrial Systems, LP

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. 3, 2016

By Global Environmental Engineering

Data Requirements for Soil, Sediment, and Sludge

Site soil conditions frequently limit the selection of a treatment process. Process-limiting characteristics such as pH or moisture content may sometimes be adjusted. In other cases, a treatment technology may be eliminated based upon the soil classification (e.g., particle-size distribution) or other soil characteristics. Soils are inherently variable in their physical and chemical ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

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