Experimental bioreactor landfill operations at operating Municipal Solid Waste (MSW) landfills
can be approved under the research development and demonstration (RD&D) provisions of 40 CFR
258.4. To provide a basis for consistent data collection for future decision-making in support of the
newly promulgated RD&D requirements, this document outlines an approach for bioreactor landfill
monitoring. This document suggests technical guidance only, and is not intended to be used for
regulatory purposes. It should also be noted that this document should not take the place of sitespecific
considerations, nor imply that alternative professional determinations on monitoring and
analysis methods are not appropriate. The ongoing research and experience on bioreactor landfill
projects have provided the basis for this document; however, advances in monitoring and analysis
methods may be identified that warrant future updates to this document.