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The Conceptual Site Model. Kyle Newman VDEQ. What Is It?. A description of hypothesized relationships between sources, the environment, and receptors. What has happened What is happening What will happen. Example Conceptual Site Model. Figure of Conceptual Site Model. - PowerPoint PPT Presentation
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The Conceptual Site Model
Kyle NewmanVDEQ
What Is It?A description of hypothesized
relationships between sources, the environment, and receptors
•What has happened• What is happening• What will happen
Example Conceptual Site Model
Figure of Conceptual Site Model
Vapor Intrusion Conceptual Model
IRTC, 2007
Why Create a Formal CSM?• Helps plan site investigations• Provides context for site• Helps evaluate efficacy of
investigation• Allows reviewers to evaluate
the “same” site
CSM and Project Planning• Should be created before site investigation
(“Problem Formulation”)• Identification of data gaps- Phase I and UST needs vs. VRP SCR and Risk Assessment needs• Complete CSM will help determine type,
location, and number of samples required• Account for VRP Risk Assessment assumptions
What Makes a “Good” CSM?
• Site history full documented• Locations and types of potential releases
identified• Fate and transport of environmental
contaminants examined• All Potential current and future receptors
identified• Iterative- CSM changes as data are collected
Presentation
• Useful as separate section in SCR• Provide as a narrative• Figures helpful
Questions?
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