With a subaward funded by an EPA Region 3 grant to MARAMA, the City of Philadelphia retrofitted 68 fire engines with diesel oxidation catalysts (DOCs).  The retrofitted fire trucks serve 53 fire house throughout Philadelphia.  This demonstration project highlighted the emission reduction capability of DOCs on fire trucks and addressed potential installation and operational barriers.   Philly fire truck

philly emissions
  Since the retrofits were done during routine comprehensive preventive maintenance (PM) and loaner engines are provided for use during PM, the retrofits were completed without compromising public safety, which was of concern because most of Philadelphia’s fire stations have only one pumper truck, and none possess more than two.

  Total cost: $148,447 ($89,000 grant funded)