My project is to be built on top of a landfill that was closed in 1961. I have a very comprehensive "Final Closure and Post-Closure Maintenance Plan" that details required monitoring of the site for excessive methane, etc. I would describe this as the brownfield remediation plan. However, I don't have any official document that states "this site is a brownfield." My question is, would a record that the site was used as a landfill for many years serve as sufficient evidence of brownfield status? I mean, what could be more of a brownfield than a landfill?