In a green alley, water is allowed to penetrate the soil through the pavement itself, which consists of the relatively new but little-used technology of permeable concrete or porous asphalt. Then the water, filtered through stone beds under the permeable surface layer, recharges the underground water table instead of ending up as polluted runoff in rivers and streams.
- NY Times (read full story here)
Needs some serious cost vs. benefit analysis.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment