Monday, February 16, 2015

Is it possible to repurpose polluted land?

Ex-shipyard in Amsterdam houses shops and offices

Polluted land doesn't have to stay
abandoned, experts say.
Although Amsterdam’s latest urban experiment, De Ceuvel, is built on solid ground, there’s much that reminds its denizens — artists, entrepreneurs, designers, sustainability experts — of its past as a commercial shipyard.

Converted rowboats serve as benches, stranded houseboats are used as buildings and — raised 90 centimeters, or 35 inches, off the polluted ground — a quay-like walkway constitutes the sidewalk.

De Ceuvel officially opened this summer after a team of architects, landscapers, sustainability experts and entrepreneurs created 1,250 square meters, or 13,450 square feet, of office, studio and commercial space on a polluted plot of land in the city’s industrial north.

Besides producing its own power and minimizing waste, the design aims to create a fertile ground for community interaction, while letting the area’s physical ground recuperate from its industrial past, explained Pieter Theuws, the lead landscape architect on the project.

“Our challenge is to connect streams of waste and energy and people into a circular city model,” he said.

Commitment to urban experimentation

The project is an example of Amsterdam’s commitment to urban experimentation. A few kilometers north of the centuries-old city center, artist spaces and urban experiments like De Ceuvel and NSDM, another large abandoned industrial harbor space turned into studios, or Ijburg, a community of floating houses moored off reclaimed land, are part of the city’s innovative growth initiatives.

The physical pieces needed to create De Ceuvel were 16 old houseboats, phytoregenerative plants, bio water filters, a thermophilic compost, solar panels and the long pathway. The human contribution, its creators say, included lots of physical labor, a willingness to fight administrative bureaucracy and a desire to share the place with the public.

“All of it is to attract a lot of people, to get a lot of people here, so that they get in contact with the sustainability stories,” said Sascha Glasl, who dreamed up the project and is its lead architect.

De Ceuvel won the Frame Public Dutch Design award in October. The annual prize, ultimately decided by a voting public (both online and at the Dutch Design week) is given to innovative designers. “De Ceuvel gives the impression of a utopia that has actually been accomplished,” wrote the prize selection committee.

Project focused on houseboats

Houseboats were always the soul of the project, Mr. Glasl said. Not only were they ideally suited to be plotted, without foundation, on land best left untouched, but they could be converted into innovative spaces before being towed up harbor and placed on the site by crane. This allowed the designers leeway, since city housing permits are not required to bring houseboats on land.

The original tenants were found through an advertisement on Marktplaats, a Dutch ad site, which asked potential tenants to chose one of the houseboats on sale that week, pretend that they could buy it for one euro and explain what they would do with it.

And, in fact, most of the houseboats were acquired for that nominal sum. As Amsterdam’s canals gentrify, and moorings are being leased by wealthier and more demanding residents, old boats are being scrapped to make way for new.

The offer to take the boats for a euro proved so popular that Mr. Glasl, a principal with the Amsterdam architectural office Space & Matter, and his team had to choose among offers.

The project was funded by the city through a 250,000-euro, or $313,000, start-up grant and a further €200,000 bank loan that it guaranteed. Those funds paid for materials, plants and some of the professional services required to make De Ceuvel a reality. Both volunteers and the development partners invested hundreds of hours of work, ultimately bringing down the price tag.

The tenants, who often share the boats, pay approximately €65 per square meter of workspace each year — a song in comparison with commercially available art spaces which, in Amsterdam, can fetch that much each month. The proceeds, Mr. Glasl said, are being used to pay off the guaranteed loan over the next nine years.

While the houseboats retain their original shapes, much has been done to make the interiors suitable for modern offices. Some roofs have been raised and outside paneling renewed, in some cases using freshly felled Dawn Redwood from a nearby street enlargement.

Designed to ease pollution

Many aspects of the design are positive for the polluted land on which it sits, said Mr. Theuws, an associate at Delva, a Dutch-Belgian landscape architectural firm responsible for landscaping and choosing the area’s flora.

Grasses, fireweed, foxglove, black willow and eastern cottonwood were chosen either to digest pollutants in the ground or absorb metals left behind.

Despite all the pollution — before the area housed a shipyard, Amsterdam dumped its canal sludge there in the 19th century — the ground, he says, is actually not particularly poisonous to humans.

Solar panels have been installed on roofs and biofilters installed to clean waste water from the sinks. Each boat has been equipped with a composting toilet, making them independent from the city sewer system.

Capturing rainwater to make drinking water was blocked by the city because that would have meant licensing the community as a drinking water provider — which was too complex and costly. In the end the community opted to bring in city water, although the ateliers are not connected to the sewer system. Commercial spaces and the cafe are connected.

Source: NY Times; Please note: The article appearing here has been edited for length.

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