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Report: Response to EPA Administrator’s Request for Investigation into Allegations of a Cover-up in the Risk Assessment for the Coal Ash Rulemaking

Report #10-N-0019, November 2, 2009

What We Found

We closed this investigation because we found no evidence warranting additional inquiry into the rulemaking process for CCW disposal in landfills or surface impoundments.

Report Materials

Full Report (pdf) (86.83 KB)

Report: Response to EPA Administrator’s Request for Investigation into Allegations of a Cover-up in the Risk Assessment for the Coal Ash Rulemaking

Office of Inspector General