The ongoing federal investigation includes the Federal Bureau of Investigation (FBI), the EPA Office of Criminal Investigation and the EPA Office of the Inspector General (EPA OIG).
Uchunguzi wa shirikisho unaoendelea unajumuisha Ofisi ya Shirikisho ya Upelelezi (FBI), Ofisi ya Upelelezi wa Jinai ya EPA na Ofisi ya Mkaguzi Mkuu wa EPA (EPA OIG).