With both feet sinking into damp dirt, urban planner Pascale Rouillé surveys a narrow strip of land that will soon be used to not only retain runoff, but also be bursting with greenery that the community can enjoy. Tucked in next to a warehouse known as Bâtiment 7 in the Montreal neighbourhood of Pointe-Saint-Charles, near the intersection of Le Ber and Sainte-Madeleine streets, the terrain will become what has been dubbed a "blue-green alley."