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Parking lot paved with 'green' concrete
Porous surface absorbs pollutants in storm water
By Julia Scott, STAFF WRITER
Article Last Updated: 05/03/2007 08:57:07 AM PDT
MENLO PARK — Who says concrete can't help save the planet?
A local environmental group has paved a parking lot in Menlo Park with eco-friendly, porous concrete to reduce the amount of storm-water runoff that reaches San Francisquito Creek. The technology is new, but the group hopes to promote its use across the county.
The porous, or "permeable" concrete that now covers 5,500 square feet of a parking lot in downtown Menlo Park, looks almost the same as regular concrete, except that it absorbs storm water, with all its pollutants, instead of diverting it to the sewers and out to the creek and the Bay. Even at less than an acre, the permeable concrete is expected to reduce the amount of runoff flowing off of the site by 225,000 gallons a year, more than twice what an average Bay Area household uses in a year.
