Improving The CostBenefit Ratio For Source Remediation Projects

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Improving The Cost/Benefit Ratio For Source
Remediation Projects

• Dwight Patterson, President
• XITECH Instruments Inc.
• Placitas, NM

XITECH Instruments Inc
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Remediation Direction Past, Present, and Future

• Past Groundwater Remediation
• Present Source Remediation
• Future ????

XITECH Instruments Inc
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The Present

• Source Remediation
• Gismo Itis, Which one is best?
• Watch out for Raising that ratio!
• Lets consider another direction!

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If Money Is More Important

• Less expense comes from extended time action
  plans
• Current market is not supporting this choice

XITECH Instruments Inc
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If Time Is More Important

• Here are 3 ways for Increasing Recovery Rate
• Installing Source Only Wells
• Performing Source Only Well Development
• Combining Skimming with Low Vacuum

XITECH Instruments Inc
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Install A Source Only Extraction Well

• Larger diameter well annulus fill material
• Larger width slotted casing
• Smaller well boring

XITECH Instruments Inc
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XITECH Instruments Inc
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Focus on Well Preparation

• Poor preparation can lead to false negatives
• Focus needs to be on slotted area

XITECH Instruments Inc
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XITECH Instruments Inc
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Vacuum Enhanced Recovery

• Low Vacuum Increases LNAPL Recovery

XITECH Instruments Inc
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Other Difficult Source Removals

• The afterlife of TCE
• Once used as a popular cleaning solvent, now
  resides under the water
• Thorough Phase I investigation to local actual
  source

XITECH Instruments Inc
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Another Difficult Source

• Dealing with Coal Tar
• Remains of old town gas production systems
• A Lot of Patience and New Ideas

XITECH Instruments Inc
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Another Difficult Source

• What to do with MTBE?
• Gasoline additive from oxygenated fuels
• Use Skimmers and Ozone injection

XITECH Instruments Inc
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The Future

• 2.1 million miles of US pipelines over 45 years
  old
• Pipelines are rated for only 50 years
• What to do?

XITECH Instruments Inc
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LNAPL Recovery Past, Present, and Future

• Past Groundwater Remediation
• Present Source Removal
• Future ????

XITECH Instruments Inc
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QUESTIONS?

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Cost/Benefits of Source Remediation

• Dwight Patterson, President
• XITECH Instruments Inc.
• Placitas, NM
• Xitech Web Site xitechinc.com

XITECH Instruments Inc
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