Soil Remediation HS-Chem/SmileCorp Collaboration

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Soil RemediationHS-Chem/SmileCorp Collaboration
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SmileCorp Smelting Facility

• located in Smileyville, NY
• zinc, tin and lead production
• recycling/recovery of metals
• large employer in area
• supply metals to many industries

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Our Facility

• In use for 50 years
• 50 acre site
• On Smileyville river
• recreational
• Near residential areas
• Near forested areas

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Smelting Byproducts

• Blast furnace slag
• considered harmless
• used in other products
• off site disposal
• Blast furnace stack
• dust containing lead
• Stored on site
• recycling
• disposal

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Past Practices

• Blast furnace slag
• may have been dumped in Smileyville river
• dispersed around site
• left in piles on site
• Blast furnace stack
• dust may not have been captured
• captured dust may be disposed of on site

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Subsurface
Depth of known lead contamination 4.5 feet
Depth to water table 5 feet
Depth 10 feet
Direction of flow
Ground water
Bedrock
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SmileCorp Options
H20 EDTA?
H20 Pb2

• Do nothing
• Pump and treat
• Pump and treat with additive (EDTA)

Ground water
Bedrock
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Lead - ligand Interaction
Pb2
Released into solution
Soil
Pb2
Pb2
Pb2
In solution
tied up by ligand
Pb2
EDTA
(ethylenediaminetetraacetic acid)
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SmileCorp Objectives

• Cost effective solution
• Least chance of fines from government or lawsuits
• Non-disruptive procedure

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HS-Chem

• Analyze data run experiments
• what will happen to lead on our site if left as
  is?
• should we consider pump and treat technology?
• would adding EDTA to the pump and treat system
  improve results?
• what is the best course of action for SmileCorp?