Technology Status Report: In Situ Flushing - CLU-IN

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In Situ Flushing Project Summaries GWRTAC Case Study Database GWRTAC ID: FLSH0076 Project Name: UST Site, Shawnee, OK City: Shawnee State/Province: OK Primary GWRTAC Personal Communication Source (Name/Organization): Project Summary: Mark Hasegawa Report(s)/Publication(s) (GWRTAC Source): None Surbec Environmental Services The following text was excerpted from marketing information provided by Surbec Environmental, Norman, Oklahoma, in October 1998: Surface remediation can be a cost effective method for removal of residual subsurface petroleum hydrocarbons. When used in conjunction with Risk Based Corrective Action (RBCA) this technology can be used to remediate to Site Specific Target Levels (SSTLs). In order to quantify the potential cost of this application, a pilot test is being conducted in Shawnee, Oklahoma. Results of the flush will be used for future design and cost analysis purposes. Predesign analysis, Modflow analysis, tracer test analysis, surfactant selection and optimization, surfactant recovery design, fate transport analysis, and process design were conducted by Surbec. A treatability study was conducted to evaluate surfactant-enhanced recovery of BTEX and TPH. This study focused on separating the contaminant from the waste stream and Micellar Enhanced Ultrafiltration (MEUF) for surfactant reconcentration. Numerical 3-D flow and 2-D fate and transport modeling to identify injection/capture zones was also conducted. Surfactant injection/recovery project included re-injection of treated surfactant. Demonstrated 92% recovery of injected surfactant. A surfactant-contaminant separation process and surfactant reconcentration system (MEUF) was designed and implemented. The effective application of foam fractionation for tertiary surfactant recovery was demonstrated. Report(s)/Publication(s) (Additional Information Sources): Ground-Water Remediation Technologies Analysis Center Operated by Concurrent Technologies Corporation Appendix - Page 152 of 164 Copyright GWRTAC 1998 Revision 1 Tuesday, November 17, 1998
In Situ Flushing Project Summaries GWRTAC Case Study Database GWRTAC ID: FLSH0077 Project Name: Coast Guard Facility, Elizabeth City, NC City: Elizabeth City State/Province: NC Primary GWRTAC Personal Communication Source (Name/Organization): Project Summary: Mark Hasegawa Report(s)/Publication(s) (GWRTAC Source): None Surbec Environmental Services The following text was excerpted from marketing information provided by Surbec Environmental, Norman, Oklahoma, in October 1998: Surbec supervised and conducted field screening to determine the feasibility of surfactantenhanced removal of chromium and chlorinated solvents. A surfactant screening analysis was conducted for removal of chromium from the subsurface at the Coast Guard Facility in Elizabeth City, NC. The project included a predesign analysis, Moc analysis, tracer test analysis, surfactant selection and optimization, surfactant recovery design, and fate transport analysis. Treatability studies were conducted to evaluate surfactant-enhanced recovery of chromium. The results indicated that the addition of surfactant and a complexing agent increased chromium (chromate ion) removal by over 1 order of magnitude over water flushing alone. Report(s)/Publication(s) (Additional Information Sources): Ground-Water Remediation Technologies Analysis Center Operated by Concurrent Technologies Corporation Appendix - Page 153 of 164 Copyright GWRTAC 1998 Revision 1 Tuesday, November 17, 1998
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Technology Status Report Technology
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ABSTRACT This technology status rep
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LIST OF TABLES Table Title Page 1 I
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1.0 INTRODUCTION / PURPOSE OF STATU
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a laboratory-scale project. As illu
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3.1 Flushing Solutions 3.0 ANALYSIS
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(approximately eight) full-scale pr
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Table 1. In Situ Flushing - Summary
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Table 3 In Situ Flushing - Geology
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Table 4 In Situ Flushing - Recovere
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Full-Scale/Commercial 26% Figure 2.
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Site Remediation 25% Figure 4. In S
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NAPL Removal 34% Figure 6. In Situ
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Figure 8. In Situ Flushing - Distri
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Number of Projects 35 30 25 20 15 1
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Number of Case Studies 45 40 35 30
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25 ft and 50 ft and 10 ft and 100 f
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Unconfined Aquifer 65% Figure 16. I
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In Situ Flushing Project Summaries
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Technology Status Report: In Situ Flushing - CLU-IN

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