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Contaminated Sites Closure

At DNA, we provide comprehensive contaminated sites management and environmental due diligence support by identifying and measuring environmental risks in order to maintain client Environmental reputations, plan accruals, and protect asset values.

 
 
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Site Assessment

When we assess a site, we use our comprehensive understanding of state and federal regulations to guide the generation of detailed, pertinent and actionable site data to inform the selection and design of efficient and cost-effective closure solution options.

We routinely conduct the following types of assessment work:

  • Initial and additional Site Characterizations

  • High Resolution Site Characterizations (HRSCs)

  • Environmental Sequence Stratigraphy (ESS) 

  • Groundwater plume delineation

  • Groundwater monitoring

  • Trend analysis

  • Vapor intrusion assessments

  • Historical land ownership & liability analysis

  • Conceptual Site Modeling (CSMs)

  • 3D visualization and modeling.

 
 
 
 
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Remediation & Closure

DNA has the experience to ensure a site moves quickly from the initial characterization and assessment phase towards active or passive remediation and regulatory closure. We combine the appropriate remediation technology, contaminant migration modeling tools, strategic project planning, and regulatory negotiations to quickly and astutely satisfy regulatory obligations.

We can help you generate the proper plans and reports, as well as conduct the work for:

  • Remedial Assessments

  • Remedial Actions

  • Removal Actions

  • Risk Calculations

  • Data gap characterizations

  • Application of ISCO technologies

 
 
 
 
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Decommissioning

DNA performs asset end-of-life decommissioning and divestiture planning. From single asset or facility impairment to regional oil and gas fields, DNA ties site assessment and characterization data with long-term remediation strategic planning and accrual estimates to aid in overall accrual management.

Typical assets we can help with:

  • UST removals

  • Oil/Water Separator removal

  • Shop Sump and Piping removal.

  • Injection Well (UIC Class V, etc.) removals and USEPA compliance

  • Groundwater well decommissioning