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It is a remodeling within the Bon Pastor neighborhood to replace old, cheap single-family houses, which are being demolished, by blocks of official protection and public space to be urbanized. Moving from extensive land occupancy to high-rise housing blocks frees up a large number of square feet of green space.
22,000 m2, mostly waterproof, including the roofs of the new housing blocks, pour rainwater into 1,400m2 of vegetated flood areas or floodplains.
The neighborhood proximity to the Besòs river delta with sandy subsoil allows easy and very economical infiltration of virtually all of the rainfall without spillage into the unit systems in the vast majority of rainfall episodes. . These flower beds have overflows. overflows operate only when the capacity of water accumulation is exceeded in times of heavy rainfall.
Depending on the type of urban space, one or another type of Urban Sustainable Drainage Systems (SUDS) has been used.
Permeable pavement was installed on street tree alignments. This pavement consists of the surface below:

• a layer of 20 cm of permeable concrete
• a polyethylene mesh
• a polypropylene cell structure.

The mesh has the mission of preventing the concrete from filling the gaps in the cells. The cell structure forms an empty space 5 cm thick and allows water to be stored. From here the water passes to the structural land consisting of granite ballast and topsoil. this improves the substrate in which the trees will develop. This helps the trees, while also harnessing the water that runs along the sidewalks for irrigation, storage and filtration in this substrate.

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