Unlike brownfields, which feature actual or perceived levels of environmental contamination, greyfields typically do not require remediation in order to unlock value to an investor.
Remediation measures included installation of numerous internal drains, inclinometers, extensometers, and piezometers throughout the spillway and abutments.
Political de-emphasis of issues must therefore give way to the unvoiced neutrality of scientific ratiocination as a precondition for practical remediation strategies to take hold.
They are mainly suitable for bigger developments rather than individual sites, although most could be used if a joint approach to land remediation across adjoining properties was used.