1.   Daloia said EPA investigators had found no remaining traces of airborne chemical toxins at the site, and no sign of ground water contamination.

2.   The remaining traces of an ephemeral history will be recovered.

3.   A few hours after the blast, the bus frame was hauled away and a street-cleaning vehicle was vacuuming away the remaining traces of the blast.

4.   But when they looked around his thyroid for remaining traces of cancer, there were none.