From the Highlights: "The Federal Emergency Management Agency (FEMA) awarded the City of New Orleans (City) and the Sewer & Water Board of New Orleans (S&W Board) $785 million to repair damages to infrastructure. FEMA approved an additional $1.25 billion to the City and the S&W Board to complete infrastructure repairs. [...] FEMA should disallow $2.04 billion--the initial award of $785 million, plus the additional $1.25 billion award."
Department of Homeland Security, Office of Inspector General, Report No. OIG-17-97-D
Department of Homeland Security Office of Inspector General: https://www.oig.dhs.gov/