At 1:30 pm today, Tuesday February 21, 2012, the Indiana Department of Environmental Management (IDEM) intends to present its Remediation Closure Guide and Remediation Program Guide to the Indiana Solid Waste Management Board. This will mark the final step in the two-year process undertaken by IDEM, with private industry input, to overhaul their subsurface environmental investigation and remediation Non-Rule Policy guidance.
The soon to be replaced Risk Integrated System of Closure, or RISC program, has been in effect since February 2001 and has provided default cleanup levels for soil and groundwater in both residential and commercial/industrial scenarios in cookbook fashion. Groundwater levels were established largely on health-based levels deemed safe for human consumption in residential and industrial exposure scenarios. Soil levels were established primarily on the most conservative of direct contact, ingestion or migration to groundwater pathways, the latter of which was typically selected as default. Continue reading “Indiana Department of Environmental Management to Present Remediation Closure Guide and Remediation Program Guide to the Indiana Solid Waste Management Board”