Wednesday, October 29, 2008

One Solution to Polluted Runoff

Fall and winter will, hopefully, bring much needed rain. Rain brings many benefits, however, in urban areas with a lot of pavement, rain also brings "runoff". Storm water runoff is a major concern. When it rains, pollution on driveways, parking lots, and roads washes into storm drains and into rivers, lakes or the ocean. This pollution can include: oil, brake dust, animal feces, cigarette butts, and trash.

One solution to reducing runoff is the use of porous pavement. Using larger aggregate than normal asphalt, porous pavement encourages rainwater to seep into the ground rather than running into storm drains. When water seeps into the ground, there is a natural filtration process that cleans the water, and ultimately recharges groundwater.

Porous pavement can help capture runoff which would be lost to the ocean for later use as it is pumped from the groundwater aquifer, and it helps protect our lakes, rivers and oceans from the polluted runoff.

This technology is being used in new construction, but if you're thinking about repaving your driveway, you might consider using environmentally-friendly porous pavement.

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