Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The primary objective of this project was to test the performance of two different reactive media in the same aquifer. To satisfy this objective, Battelle designed, constructed, and monitored a pilot-scale permeable reactive barrier (PRB) in Area 5 at Dover Air Force Base, DE. The PRB was installed in December 1997 to treat a perchloroethylene plume and was monitored over 18 months of operation. The PRB is a funnel-and-gate system with two gates. Both gates contain granular iron as the reactive medium an were installed with the use of caissons. Gate 1 had a pretreatment zone (PTZ) consisting of 10% iron and sand, and Gate 2 had a PTZ consist in of 10% pyrite and sand. The PTZs were designed to remove dissolved oxygen before it entered the 100% iron reactive cell. The pyrite PTZ had the proposed benefit of pH control. However, monitoring showed that the reduced pH in the pyrite PTZ could not be sustained in the 100% iron reactive cell. The PRB is functioning as designed in terms of chlorinated solvent reduction, hydraulic performance, and geochemistry. The use of caissons was found to be a viable method for installing a PRB in the midst of several utility lines and in a relatively deep aquifer.
Design, Construction, and Monitoring of the Permeable Reactive Barrier in Area 5 at Dover Air Force Base
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The primary objective of this project was to test the performance of two different reactive media in the same aquifer. To satisfy this objective, Battelle designed, constructed, and monitored a pilot-scale permeable reactive barrier (PRB) in Area 5 at Dover Air Force Base, DE. The PRB was installed in December 1997 to treat a perchloroethylene plume and was monitored over 18 months of operation. The PRB is a funnel-and-gate system with two gates. Both gates contain granular iron as the reactive medium an were installed with the use of caissons. Gate 1 had a pretreatment zone (PTZ) consisting of 10% iron and sand, and Gate 2 had a PTZ consist in of 10% pyrite and sand. The PTZs were designed to remove dissolved oxygen before it entered the 100% iron reactive cell. The pyrite PTZ had the proposed benefit of pH control. However, monitoring showed that the reduced pH in the pyrite PTZ could not be sustained in the 100% iron reactive cell. The PRB is functioning as designed in terms of chlorinated solvent reduction, hydraulic performance, and geochemistry. The use of caissons was found to be a viable method for installing a PRB in the midst of several utility lines and in a relatively deep aquifer.
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The primary objective of this project was to test the performance of two different reactive media in the same aquifer. To satisfy this objective, Battelle designed, constructed, and monitored a pilot-scale permeable reactive barrier (PRB) in Area 5 at Dover Air Force Base, DE. The PRB was installed in December 1997 to treat a perchloroethylene plume and was monitored over 18 months of operation. The PRB is a funnel-and-gate system with two gates. Both gates contain granular iron as the reactive medium an were installed with the use of caissons. Gate 1 had a pretreatment zone (PTZ) consisting of 10% iron and sand, and Gate 2 had a PTZ consist in of 10% pyrite and sand. The PTZs were designed to remove dissolved oxygen before it entered the 100% iron reactive cell. The pyrite PTZ had the proposed benefit of pH control. However, monitoring showed that the reduced pH in the pyrite PTZ could not be sustained in the 100% iron reactive cell. The PRB is functioning as designed in terms of chlorinated solvent reduction, hydraulic performance, and geochemistry. The use of caissons was found to be a viable method for installing a PRB in the midst of several utility lines and in a relatively deep aquifer.
Design Guidance for Application of Permeable Reactive Barriers for Groundwater Remediation
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Battelle, under contract to the Air Force, has prepared a comprehensive update to the February 1997 version of a design guidance document for the proposed use of site managers, contractors, and regulators. The design guidance covers permeable barrier application to sites with contaminated groundwater. The document does not purport to replace the scientific judgment of the on-site engineer or hydrogeologist, but provides guidance on the issues and options that need to be considered based on the current understanding of the technology. The guidance addresses design, construction, and monitoring of permeable barriers in various hydrogeologic settings. This update includes the lessons learned during the design, construction, and monitoring of a permeable reactive barrier at Dover AFB, DE, as well as progress made at other sites. It also includes the advances in the technology since the completion of the previous version of the report.
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Battelle, under contract to the Air Force, has prepared a comprehensive update to the February 1997 version of a design guidance document for the proposed use of site managers, contractors, and regulators. The design guidance covers permeable barrier application to sites with contaminated groundwater. The document does not purport to replace the scientific judgment of the on-site engineer or hydrogeologist, but provides guidance on the issues and options that need to be considered based on the current understanding of the technology. The guidance addresses design, construction, and monitoring of permeable barriers in various hydrogeologic settings. This update includes the lessons learned during the design, construction, and monitoring of a permeable reactive barrier at Dover AFB, DE, as well as progress made at other sites. It also includes the advances in the technology since the completion of the previous version of the report.
NATO/CCMS pilot study
Author:
Publisher: DIANE Publishing
ISBN: 1428900144
Category : Water
Languages : en
Pages : 291
Book Description
Publisher: DIANE Publishing
ISBN: 1428900144
Category : Water
Languages : en
Pages : 291
Book Description
Performance Monitoring of the Permeable Reactive Barrier at Dover AFB
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
Book Description
Based on column tests conducted between February and June 1997, NERL recommended that in terms of effectiveness in achieving cleanup standards and kinetics, a pyrite-iron combination ranked as the best reactive medium (EPA, 1997). Based on this recommendation, in December 1997 Battelle designed and installed a funnel-and-gate type permeable barrier with two gates. Both gates consist of a reactive cell containing granular iron, preceded by a pre-treatment zone (PTZ). The PTZ in Gate 1 consists of a 1% iron-sand mixture; the PTZ in Gate 2 consists of a 10% pyrite-sand mixture. The aim of the PTZ is to improve the longevity of the reactive medium by scrubbing out oxygen from the groundwater before it reaches the 100% iron zone. In the column tests, EPA also reported potential for pH control when pyrite was used. Dissolved oxygen and high pH are detrimental to the longevity of the reactive medium because these conditions promote the formation of precipitates on the granular iron surfaces, thus potentially altering the reactivity and hydraulic performance of the barrier.
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
Book Description
Based on column tests conducted between February and June 1997, NERL recommended that in terms of effectiveness in achieving cleanup standards and kinetics, a pyrite-iron combination ranked as the best reactive medium (EPA, 1997). Based on this recommendation, in December 1997 Battelle designed and installed a funnel-and-gate type permeable barrier with two gates. Both gates consist of a reactive cell containing granular iron, preceded by a pre-treatment zone (PTZ). The PTZ in Gate 1 consists of a 1% iron-sand mixture; the PTZ in Gate 2 consists of a 10% pyrite-sand mixture. The aim of the PTZ is to improve the longevity of the reactive medium by scrubbing out oxygen from the groundwater before it reaches the 100% iron zone. In the column tests, EPA also reported potential for pH control when pyrite was used. Dissolved oxygen and high pH are detrimental to the longevity of the reactive medium because these conditions promote the formation of precipitates on the granular iron surfaces, thus potentially altering the reactivity and hydraulic performance of the barrier.
Risk, Regulatory, and Monitoring Considerations
Author: Godage B. Wickramanayake
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 456
Book Description
- Regulatory Perspectives and Decision-Making- Advances in Site Characterization- Environmental Data Management, Geostatistics, and GIS- Advances in Analytical and Detection Techniques- Risk-Based Analyses for Remediation- Human Health/Ecological Risk Assessment- Technical Impracticability- Long-Term Monitoring and Optimization- Innovative Monitoring and Control Systems.
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 456
Book Description
- Regulatory Perspectives and Decision-Making- Advances in Site Characterization- Environmental Data Management, Geostatistics, and GIS- Advances in Analytical and Detection Techniques- Risk-Based Analyses for Remediation- Human Health/Ecological Risk Assessment- Technical Impracticability- Long-Term Monitoring and Optimization- Innovative Monitoring and Control Systems.
Design, Construction and Monitoring of a Permeable Reactive Barrier Technology for Use at Rocky Flats Environmental Technology Site (RFETS)
Author: Brian P. Dwyer
Publisher:
ISBN:
Category : Permeable reactive barriers
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Permeable reactive barriers
Languages : en
Pages :
Book Description
Design, Construction and Monitoring of a Permeable Reactive Barrier Technology for Use at Rocky Flats Environmental Techonology Site (RFETS).
Permeable Reactive Barriers
Author: Genevieve A. Boshoff
Publisher:
ISBN: 9781901502237
Category : Science
Languages : en
Pages : 180
Book Description
Publisher:
ISBN: 9781901502237
Category : Science
Languages : en
Pages : 180
Book Description
Capstone Report on the Application, Monitoring, and Performance of Permeable Reactive Barriers for Ground-water Remediation
Author: Richard T. Wilkin
Publisher:
ISBN:
Category : Bioremediation
Languages : en
Pages : 160
Book Description
Publisher:
ISBN:
Category : Bioremediation
Languages : en
Pages : 160
Book Description
One Hundred Percent Remedial Design and Implementation Plan for A-Zone Permeable Reactive Barrier, Hookston Station Site, Pleasant Hill, California
Author: Environmental Resources Management (Firm)
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages :
Book Description