REMEDIATING COMPLEX CONTAMINATED SITES: A FLORIDA CASE HISTORY - - PowerPoint PPT Presentation
REMEDIATING COMPLEX CONTAMINATED SITES: A FLORIDA CASE HISTORY July 24, 2014 Environment & Health Presentation Outline 2 Site History Conceptual Site Model Remediation Options Questions I hope to provide you with a
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Site History Conceptual Site Model Remediation Options Questions
I hope to provide you with a perspective on:
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1888 to 1960: Operated as a Manufactured Gas Plant 1960 to Present: Property uses and ownership change. 1995 to present: Current property owners, the City and
2013: USEPA selects remedy for OU1 (top 60 feet);
January 2016: Projected start date for OU1
Based on Sanborn Fire Insurance Maps (1897-1973) and 1948 Plant Engineering Drawing
Common Sense Geology Hydrogeology Microbiology Toxicology Chemistry Site History
Review past and current site activities and properties Identify site and contaminant characteristics that affect fate and transport Identify existing and potential receptors Define the current distribution of contaminants Screen potential risk management options Screen various remediation options Identify information gaps Collect more information and refine the Conceptual Site Model
TIME
RGB 128/143/165
No direct exposure No imminent risk
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Groundwater movement is very slow, no surface water nearby.
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Contaminants: Benzene, naphthalene, ethylbenzene,
Objectives:
Prevent contact with contaminated soil and groundwater Prevent migration of impacted groundwater Remove or treat the contaminated soil Use safe, implementable and proven technologies, be
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LNAPL Impacted soil to 15 ft bgs LNAPL Impacted soil to 15 ft bgs
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