Estimation of Air Impacts for Soil Vapor Extraction (SVE) Systems (revised). PDF Download

Author: Patricia I. Flores
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 40

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Author: United States. Environmental Protection Agency. Office of Air Quality Planning and Standards
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: United States Environmental Protection Agency (EPA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781725621435
Category :
Languages : en
Pages : 42

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Air-superfund National Technical Guidance Study Series Estimation Of Air Impacts For Soil Vapor Extraction (SVE) Systems

Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 40

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Author:
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Category : Soil remediation
Languages : en
Pages : 44

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Author:
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ISBN:
Category :
Languages : en
Pages : 856

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Author: United States. Environmental Protection Agency
Publisher:
ISBN:
Category : Environmental protection
Languages : en
Pages : 848

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Author: Us Army Corps Of Engineers
Publisher: Military Bookshop
ISBN: 9781780397702
Category : Technology & Engineering
Languages : en
Pages : 434

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This manual provides practical guidance for the design and operation of soil vapor extraction (SVE) and bioventing (BV) systems. It is intended for use by engineers, geologists, hydrogeologists, and soil scientists, chemists, project managers, and others who possess a technical education and some design experience but only the broadest familiarity with SVE or BV systems.

Author: Trevor Cristopher White
Publisher:
ISBN:
Category : Soil vapor extraction
Languages : en
Pages : 306

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"Since the inception of Soil Vapor Extraction (SVE) as a viable contaminated soil restoration strategy, operators of these systems have struggled with determining the best date to terminate operation of their systems. Using principles of soil-gas flow and mass transport through unsaturated soils, stochastic hydrogeology, uncertainty analysis, and a cost/risk decision model, a procedure that can determine the appropriate time to discontinue operation of SVE systems was developed. Modeling of physical characteristics and determination of mass removal of a SVE system was accomplished using statistical realizations of permeability (uncertainty model) and a 2D advective-dispersive finite element vapor transport program (VapourT). The results from subsequent Monte Carlo analysis of the mass removal simulations are then subjected to a cost/risk analysis (decision model) to determine the appropriate termination time for the system based on costs and the probability that the system will fail to reach the regulatory standard. The decision model provides information on the cost benefits associated with either the continued operation of a SVE system, or its replacement with a more economically feasible remediation system. The intention of this research is to validate a framework for the estimation of termination time for the operational phase of a selected soil vapor extraction system"--Leaves iii.

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Category :
Languages : en
Pages :

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Soil vapor extraction (SVE) is a prevalent remediation approach for volatile contaminants in the vadose zone. A diminishing rate of contaminant extraction over time is typically observed due to 1) diminishing contaminant mass, and/or 2) slow rates of removal for contamination in low-permeability zones. After a SVE system begins to show indications of diminishing contaminant removal rate, SVE performance needs to be evaluated to determine whether the system should be optimized, terminated, or transitioned to another technology to replace or augment SVE. This guidance specifically addresses the elements of this type of performance assessment. While not specifically presented, the approach and analyses in this guidance could also be applied at the onset of remediation selection for a site as a way to evaluate current or future impacts to groundwater from vadose zone contamination. The guidance presented here builds from existing guidance for SVE design, operation, optimization, and closure from the U.S. Environmental Protection Agency, U.S. Army Corps of Engineers, and the Air Force Center for Engineering and the Environment. The purpose of the material herein is to clarify and focus on the specific actions and decisions related to SVE optimization, transition, and/or closure.