"No estimate of the measure should be provided for institutional control remedies or the portions of remedies that may involve solely institutional controls. Such cases do not directly and physically address contaminants, and determining a volume to associate with such controls would be difficult to do in any consistent way."
Source: 12/12/03 "Final Methodology for Estimating Superfund and RCRA Corrective Action Case Conclusion Data Sheet (CCDS) Environmental Benefits", p. 7 of the guidance.
See Also
Volume of Contaminated Medium Addressed Definition
Volume of Contamiated Medium Addressed Guidance