A Practical Approach for the Selection, Pilot Testing, Design, and Monitoring of In Situ Air Sparging/Biosparging Systems

Johnson, Paul C.; Leeson, Andrea; Johnson, Richard L.; Vogel, Catherine M.; Hinchee, Robert E.; Marley, Michael C.; Peargin, Tom; Bruce, Cristin L.; Amerson, Illa L.; Coonfare, Christopher T.; Gillespie, Rick D.

doi:10.1080/20018891079320

Cited by 13 publications

(14 citation statements)

References 12 publications

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“…Given these factors, it may be practical to install a large number of sparging points, and/or to progressively sweep a sparging system across the site (P.C. Johnson et al, 2001).…”

Section: Summary Of Pilot Test Results At Eielson Afbmentioning

confidence: 99%

“…Thus, for example, if high concentrations of SF 6 are observed at a distance of 15 ft, but not at 20 ft, the IAS Design Paradigm (P.C. Johnson et al, 2001) would then suggest that a well spacing of up to 30 ft might be appropriate, but greater than that would not be justified.…”

Section: Sf 6 Distribution Test (Pt7)mentioning

confidence: 97%

“…Furthermore, tasks PT7 and PT8 can provide the basis for decisions about well spacings larger than the standard 15-ft spacing recommended by P.C. Johnson et al (2001). In the case history described below, the pilot test procedures discussed above are applied to determine if IAS is practical at a site at Eielson AFB, Alaska.…”

Section: Interpretation Of Pilot Tests: Case History From Eielson Airmentioning

confidence: 98%

“…Johnson et al (2001). Initially, air was injected at 5 ft 3 /min into the shallow (6 ft below the water table) IAS well.…”

Section: Injection Pressure/flow Rate Test (Pt2)mentioning

confidence: 99%

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Diagnostic Tools for Integrated In Situ Air Sparging Pilot Tests

Johnson

Amerson

et al. 2001

Bioremediation Journal

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In situ air sparging (IAS) pilot test procedures have been developed that provide rapid, on-site information about IAS performance. The standard pilot test consists of six activities conducted to look for indicators of infeasibility and to characterize the air distribution to the extent necessary to make design decisions about IAS well placement. In addition, safety hazards that need to be addressed prior to full-scale design are identified. Two additional pilot test activities are described in those cases where air distribution must be more precisely defined. The test activities include both chemical tests (tracking contaminant concentrations, dissolved oxygen and tracers) and physical tests (air flow rate and injection pressure, groundwater pressure response).

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“…Given these factors, it may be practical to install a large number of sparging points, and/or to progressively sweep a sparging system across the site (P.C. Johnson et al, 2001).…”

Section: Summary Of Pilot Test Results At Eielson Afbmentioning

confidence: 99%

Section: Sf 6 Distribution Test (Pt7)mentioning

confidence: 97%

Section: Interpretation Of Pilot Tests: Case History From Eielson Airmentioning

confidence: 98%

“…Johnson et al (2001). Initially, air was injected at 5 ft 3 /min into the shallow (6 ft below the water table) IAS well.…”

Section: Injection Pressure/flow Rate Test (Pt2)mentioning

confidence: 99%

See 2 more Smart Citations

Diagnostic Tools for Integrated In Situ Air Sparging Pilot Tests

Johnson

Amerson

et al. 2001

Bioremediation Journal

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“…These data provide an indication of the spatial extent and directionality of the air distribution below the water table; information that can be critical for decisions about IAS well spacing. Helium tracer tests, along with transient pressure transducer measurements (Johnson et al, 2001b), are easily incorporated into short-term IAS pilot testing procedures Downloaded by [University of Arizona] at 06:33 07 June 2016 (Johnson et al, 2001). They can also be used for fullscale system diagnosis and optimization.…”

Section: Introductionmentioning

confidence: 99%

Helium Tracer Tests for Assessing Contaminant Vapor Recovery and Air Distribution During In Situ Air Sparging

Johnson

et al. 2001

Bioremediation Journal

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Helium tracer tests are used as an alternative to soil-gas pressure measurements to assess the effectiveness of soil vapor extraction (SVE) systems for capturing contaminant vapors liberated by in situ air sparging (IAS). The tracer approach is simple to conduct and provides more direct and reliable measures than the soil-gas pressure approach. The tracer test described here can be used to both determine SVE system capture efficiency and to evaluate air distribution during IAS pilot tests. The tests can also be conducted on operating, full-scale systems to confirm system performance. In addition, the tests can be easily repeated, which allows system parameters to be modified and the impact of those modifications to be quickly assessed. Whether used alone or in conjunction with other diagnostic tools, helium tracer tests provide an important measure of IAS system performance.

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Air Sparging for the Treatment of Chlorinated Solvent Plumes

Johnson

Bruce

2010

SERDP/ESTCP Environmental Remediation Technology

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A Practical Approach for the Selection, Pilot Testing, Design, and Monitoring of In Situ Air Sparging/Biosparging Systems

Cited by 13 publications

References 12 publications

Diagnostic Tools for Integrated In Situ Air Sparging Pilot Tests

Diagnostic Tools for Integrated In Situ Air Sparging Pilot Tests

Helium Tracer Tests for Assessing Contaminant Vapor Recovery and Air Distribution During In Situ Air Sparging

Air Sparging for the Treatment of Chlorinated Solvent Plumes

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