Jan 04 2012
From the “Technology Innovation News Survey”
Entries for November 1-30, 2011
Case Study of Dual Tanker Spill Events onto a Roadway Embankment with Assessment of Multiple Remediation Strategy Effectiveness and Carbon Footprint Analysis
Timothy L. Harman, P.E.
Handex Consulting & Remediation - Southeast LLC
17th Annual Florida Remediation Conference
13 & 14 October | Orlando, FL
A spill from a fuel tanker rollover generated an emergency response on a Florida roadway. The spill involved fuel impacts to the travel lanes, the embankment supporting the on ramp, and the retention pond at the toe of the embankment. Subsequent interim source removal activities included soil excavation, free-product recovery, multiphase extraction, and a series of chemical oxidation injections, performed as a remediation pilot study. As the cleanup progressed and a remedial action plan was being considered, a second spill event occurred at the same location 2.5 years after the first one. The second event underwent additional assessment, and two parties moved forward with a shared remediation design and implementation. The remediation plan implementation consisted of two chemical injection events into the shallow portion of contaminated groundwater. The first injection event consisted of a chemical oxidation reagent and the second event of injection of a mixture of chemical oxidation and biostimulation reagents. A third injection event consisted of a deeper injection interval with a biostimulation reagent only. This case study chronicles the implementation of multiple assessments and remediation implementations for multiple spill events for a similar location, for a site with multiple stakeholders and multiple constraints, including work alongside an active roadway and in advance of a proposed roadway construction corridor project.
Contact Tim Harman, P.E.
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