The engines are cleaned in a special washing machine that filters out the toxic runoff.

Among these are the possibilities of toxic runoff from pesticides, herbicides and chemical fertilizers.

Humans may hinder E. proeliare's abundance by polluting its habitat with toxic runoff from paved roads and silt from logging causing erosion around streams.

"They will catch the toxic runoff from the street that now flows directly into the bay after a storm."

Noxious landfill gases are sometimes captured for use as fuel, but there is also the potential problem of toxic liquid runoff, even if the landfill has a liner.

She started peppering her conversation with words like 'ozone layer," sustainable forestry,' and 'toxic runoff.'

Organic farms do not contaminate groundwater, nor do they create toxic runoff.

Rivers and streams children have played in for centuries are now off-limits, clouded with toxic runoff.

A second water-related program would increase incentives for farmers in the Chesapeake Bay watershed to reduce toxic runoff from their fields.

Mining in its native river basins led to sediment and toxic runoff in the water.