Tampered Diesel Pickup Trucks: A Review of Aggregated Evidence from EPA Civil Enforcement Investigations

This is the letter and footnotes on Tampered Diesel Pickup Trucks: A Review of Aggregated Evidence from EPA Civil Enforcement Investigations.

• Tampered Diesel Pickup Trucks: A Review of Aggregated Evidence from EPA Civil Enforcement Investigations (pdf) (2.68 MB)

  • Eastern Research Group, Inc., Investigation Summary Report: H&S Performance (pdf) (12.78 MB) (Sept. 26, 2013)

  •   Eastern Research Group, Inc., Investigation Summary Report: H&S Performance, SCT Performance, and Spartan Diesel Technologies (pdf) (6.99 MB) (July 2, 2014)

  • Eastern Research Group, Inc., Summary Report: Derive Entities Emissions Testing (pdf) (15.9 MB) (April 12, 2016)