1. Definition
    Canada   United States    United Kingdom  

2. Locations and contaminants

3. Brownfield status by country
    United States  Canada  Denmark  France  Germany  United Kingdom 

4. Redevelopment
    Valuation and financing   Remediation strategies   Barriers 

5. Post-redevelopment uses
     Commercial and residential    Parks    Gas Works Park    [https://www.asla.org/awards/2006/06winners/309.html Alumnai Valley]    [https://www.asla.org/NewsReleaseDetails.aspx?id=53383 Zhongshan Shipyard Park] – Turenscape    [https://www.asla.org/awards/2004/04winners/entry557.html Seonyudo Park, Seoul] – SeoAhn Total Landscape    [https://www.asla.org/2016awards/173014.html Ningbo Eco-Corridor] – SWA Architects    [https://www.asla.org/2010awards/006.html Shanghai Houton Park] – Turenscape    [https://www.asla.org/awards/2008/08winners/201.html Lagoon Park] – Van Atta Associates Inc    [https://www.asla.org/2010awards/173.html Highline NYC] – James Corner Field Ops    [https://www.asla.org/2010awards/033.html Tianjin Qiaoyuan Park] – Turenscape    [https://www.asla.org/2010awards/015.html Qinhuangdao Beach Restoration] – Turenscape    [https://www.asla.org/2013awards/062.html Qianian Sanlihe Greenway] – Turenscape    [https://www.asla.org/2011awards/183.html The Steel Yard] – Klopfer Martin Design Group  

6. Regulation
    United States  United Kingdom 

7. See also

8. References

9. Further reading

10. External links

Definition

Canada

Environment Canada defines brownfields as "abandoned, idle or underutilized commercial or industrial properties [typically located in urban areas] where past actions have caused environmental contamination, but which still have potential for redevelopment or other economic opportunities."^[3]

United States

The US EPA has defined brownfield not simply as a potential improvement site which has been previously improved, but also one that has potential impediments to improvement, such as "the presence or potential presence of a hazardous substance, pollutant, or contaminant".^[4] This comports well with an available general definition of the term, which scopes to "industrial or commercial property".^[5]

The term brownfields first came into use on June 28, 1992, at a U.S. congressional field hearing hosted by the Northeast Midwest Congressional Coalition. Also in 1992, the first detailed policy analysis of the issue was convened by the Cuyahoga County Planning Commission. The United States Environmental Protection Agency selected Cuyahoga County as its first brownfield pilot project in September 1993.^[6]

The term applies more generally to previously used land or to sections of industrial or commercial facilities that are to be upgraded.^[7]

In 2002, President George W. Bush signed the Small Business Liability Relief and Brownfields Revitalization Act (the “Brownfields Law”) which provides grants and tools to local governments for the assessment, cleanup, and revitalization of brownfields. The motivation for this act was the success of the EPA’s brownfields program, which it started in the 1990s in response to several court cases that caused lenders to redline contaminated property for fear of liability under the Superfund. As of September 2015, the EPA estimates that the Brownfields program has resulted in 56,442 acres of land readied for reuse.^[8]

Mothballed brownfields are properties that the owners are not willing to transfer or put to productive reuse.^[9]{{failed verification|date=February 2017}}

Brownfield status is a legal designation which places restrictions, conditions or incentives on redevelopment and use on the site.{{citation needed||date=February 2017}}

United Kingdom

In the United Kingdom, the term 'brownfield' has a colloquial meaning roughly equivalent to the American usage described above, i.e. vacant or derelict land or property, usually industrial in nature. In terms of British Town and Country Planning, however, the meaning of 'brownfield' is more complex, and is often conflated with the technical term 'previously developed land' (PDL). PDL was originally defined in planning policy for housing development in England and Wales, and was carefully distinguished in such policy from 'brownfield', which was undefined but considered to be different.^[10]{{rp|26}} The definition from the 2012 National Planning Policy Guidance, which only applies to England, uses the terms 'brownfield' and 'previously developed land' interchangeably:^[11]

"Land which is or was occupied by a permanent structure, including the curtilage of the developed land (although it should not be assumed that the whole of the curtilage should be developed) and any associated fixed surface infrastructure. This excludes:

• land that is or has been occupied by agricultural or forestry buildings;
• land that has been developed for minerals extraction (mining) or waste disposal by landfill purposes where provision for restoration has been made through development control procedures;
• land in built-up areas such as private residential gardens, parks, recreation grounds and allotments; and
• land that was previously-developed but where the remains of the permanent structure or fixed surface structure have blended into the landscape in the process of time."

Locations and contaminants

Generally, brownfield sites exist in a city's or town's industrial section, on locations with abandoned factories or commercial buildings, or other previously polluting operations like steel mills, refineries or landfills.^[12]

Small brownfields also may be found in older residential neighborhoods, as for example dry cleaning establishments or gas stations produced high levels of subsurface contaminants.

Typical contaminants found on contaminated brownfield land include hydrocarbon spillages, solvents, pesticides, heavy metals such as lead (e.g., paints), tributyl tins, and asbestos.^[12] Old maps may assist in identifying areas to be tested.

Brownfield status by country

The primary issue facing all nations involved in attracting and sustaining new uses to brownfield sites is that industries are globally oriented and respond to global market forces.{{citation needed||date=February 2017}} This directly affects brownfield reuse, such as limiting the effective economic life of the use on the revitalized sites.{{citation needed||date=February 2017}}

United States

United States estimates suggest there are over 500,000 brownfield sites contaminated at levels below the Superfund caliber (the most contaminated) in the country.{{citation needed||date=February 2017}} While historic land use patterns created contaminated sites, the Superfund law has been criticized as creating the brownfield phenomenon where investment moves to greenfields for new development due to severe, no-fault liability schemes and other disincentives.{{citation needed||date=February 2017}} The Clinton-Gore administration and US EPA launched a series of brownfield policies and programs in 1993 to tackle this problem.{{citation needed||date=February 2017}}

Canada

The provincial governments have primary responsibility for brownfields.{{citation needed||date=February 2017}} The provinces´ legal mechanisms for managing risk are limited, as there are no tools such as "No Further Action" letters to give property owners finality and certainty in the cleanup and reuse process.{{citation needed||date=February 2017}} Yet, Canada has cleaned up sites and attracted investment to contaminated lands such as the Moncton rail yards.{{citation needed||date=February 2017}} A strip of the Texaco lands in Mississauga is slated to be part of the Waterfront Trail.{{citation needed||date=February 2017}} However, Imperial Oil has no plans to sell the {{convert|75|acre|adj=on}} property which has been vacant since the 1980s.

According to their 2014 report on federally contaminated sites, the Parliamentary Budget Officer estimated that the "total liability for remediating Canada’s contaminated sites reported in the public accounts [was] $4.9 billion."^[15]{{rp|1}} The report listed significant sites called the Big Five with a liability of $1.8 billion: Faro mine, Colomac Mine, Giant Mine, Cape Dyer-DEW line and Goose Bay Air Base. The Port Hope, Ontario site has a liability of $1 billion.^[14] Port Hope has the largest volume of historic low-level radioactive wastes in Canada, resulting from "radium and uranium processing in Port Hope between 1933 and 1988 by the former Crown corporation Eldorado Nuclear Limited and its private sector predecessors.^[17][15] By 2010 it was projected that it would cost well over a billion dollars for the soil remediation project, it was the largest such cleanup in Canadian history. The effort is projected to be complete in 2022.^[16] In July 2015 the $86,847,474 contract "to relocate the historic low-level radioactive waste and marginally contaminated soils from an existing waste management facility on the shoreline of Lake Ontario to the new, state-of-the-art facility about a kilometre north of the current site." was undertaken.^[17] There is also "$1.8 billion for general inventory sites" and "$200 million for other sites."^[14]{{rp|1}} The same report claimed the inventory currently lists 24,990 contaminated sites."

The federal government exercises some control over environmental protection, the "provincial and territorial governments issue the bulk of legislation regarding

contaminated sites."^[14]{{rp|4–5}} Under the Shared-Responsibility Contaminated Sites Policy Framework (2005), the government may provide funding for the remediation of nonfederal sites, if the contamination is related to federal government activities or national security. See Natural Resources Canada (2012)

Denmark

While Denmark lacks the large land base which creates the magnitude of brownfield issues facing countries such as Germany and the U.S., brownfield sites in areas critical to the local economies of Denmark’s cities require sophisticated solutions and careful interaction with affected communities. Examples include the cleanup and redevelopment of former and current ship building facilities along Copenhagen’s historic waterfront. Laws in Denmark require a higher degree of coordination of planning and reuse than is found in many other countries.

France

In France, brownfields are called "friches industrielles" and the Ministère de l'Écologie, du Développement Durable et de l'Énergie (MEDDE) maintains a database of polluted sites named BASOL, with "more than 4000 sites".^[18] of about 300 000 to 400 000 potentially polluted sites total (around 100 000 ha),^[19] in a historical inventory named BASIAS, maintained by the Agence de l'Environnement et de la Maitrise de l'Energie (ADEME).

Germany

Germany loses greenfields at a rate of about 1.2 square kilometres per day for settlement and transportation infrastructure. Each of the approximately 14,700 local municipalities is empowered to allocate lands for industrial and commercial use. Local control over reuse decisions of German brownfield sites ("Industriebrache") is a critical factor. Industrial sites tend to be remote due to zoning laws, and incur costly overhead for providing infrastructure such as utilities, disposal services and transportation.{{citation needed||date=February 2017}}

In 1989, a brownfield of the Ruhrgebiet became Emscher Park.^[20]

United Kingdom

In the UK centuries of industrial use of lands which once formed the birthplace of the industrial revolution have left entire regions in a brownfield status. New legislation in the UK may provide a needed incentive for brownfield cleanup and redevelopment. Cleanup laws are centered on the premise that the remediation should be "fit for the purpose".In 2018, the Campaign to Protect Rural England (CPRE) reported that the 17,656 sites (covering over 28,000 hectares of land) identified by local planning authorities at Brownfield Land Registers would provide enough land for a minimum of 1 million homes, which could rise to over 1.1 million once all registers are published. There is also brownfield capacity in areas in which the green belt is in danger, particularly in the Northwest, where local authorities have identified enough brownfield land to provide for 12 years of housing demand^[21].

Redevelopment

Valuation and financing

Acquisition, adaptive re-use, and disposal of a brownfield site requires advanced and specialized appraisal analysis techniques. For example, the highest and best use of the brownfield site may be affected by the contamination, both before and after remediation. Additionally, the value should take into account residual stigma and potential for third-party liability. Normal appraisal techniques frequently fail, and appraisers must rely on more advanced techniques, such as contingent valuation, case studies, or statistical analyses.^[22]{{failed verification|date=February 2017}} A 2011 University of Delaware study has suggested a 17.5:1 return on dollars invested on brownfield redevelopment.^[23]

A 2014 study of EPA brownfield cleanup grants from 2002 through 2008 found an average benefit value of almost $4 million per brownfield site (with a median of $2,117,982).^[24]

To expedite the cleanup of brownfield sites in the US, some environmental firms have teamed up with insurance companies to underwrite the cleanup and provide a guaranteed cleanup cost to limit land developers' exposure to environmental remediation costs and pollution lawsuits. The environmental firm first performs an extensive investigation.{{citation needed||date=February 2017}}

Remediation strategies

Innovative remediation techniques used at distressed brownfields in recent years include in situ thermal remediation, bioremediation and in situ oxidation. Often, these strategies are used in conjunction with each other or with other remedial strategies such as soil vapor extraction. In this process, vapor from the soil phase is extracted from soils and treated, which has the effect of removing contaminants from the soils and groundwater beneath a site. Binders can be added to contaminated soil to prevent chemical leaching.^[25] Some brownfields with heavy metal contamination have even been cleaned up through an innovative approach called phytoremediation, which uses deep-rooted plants to soak up metals in soils into the plant structure as the plant grows. After they reach maturity, the plants – which now contain the heavy metal contaminants in their tissues – are removed and disposed of as hazardous waste.{{citation needed||date=February 2017}}

Research is under way to see if some brownfields can be used to grow crops, specifically for the production of biofuels.^[26] Michigan State University, in collaboration with DaimlerChrysler and NextEnergy, has small plots of soybean, corn, canola, and switchgrass growing in a former industrial dump site in Oakland County, Michigan. The intent is to see if the plants can serve two purposes simultaneously: assist with phytoremediation, and contribute to the economical production of biodiesel and/or ethanol fuel.{{citation needed||date=February 2017}}

The regeneration of brownfields in the United Kingdom and in other European countries has gained prominence due to greenfield land restrictions as well as their potential to promote the urban renaissance.^[7] Development of brownfield sites also presents an opportunity to reduce the environmental impact on communities, and considerable assessments need to take place in order to evaluate the size of this opportunity.^[27]

Barriers

Many contaminated brownfield sites sit unused for decades because the cost of cleaning them to safe standards is more than the land would be worth after redevelopment. However, redevelopment has become more common in the first decade of the 21st century, as developable land has become less available in highly populated areas, and brownfields contribute to environmental stigma which can delay redevelopment.^[28] Also, the methods of studying contaminated land have become more sophisticated and costly.{{citation needed||date=February 2017}}

Some states and localities have spent considerable money assessing the contamination on local brownfield sites, to quantify the cleanup costs in an effort to move the redevelopment process forward. Therefore, federal and state programs have been developed to help developers interested in cleaning up brownfield sites and restoring them to practical uses.{{citation needed||date=February 2017}}

In the process of cleaning contaminated brownfield sites, previously unknown underground storage tanks, buried drums or buried railroad tank cars containing wastes are sometimes encountered. Unexpected circumstances increase the cost for study and clean-up. As a result, the cleanup work may be delayed or stopped entirely. To avoid unexpected contamination and increased costs, many developers insist that a site be thoroughly investigated (via a Phase II Site Investigation or Remedial Investigation) prior to commencing remedial cleanup activities.{{citation needed||date=February 2017}}

Post-redevelopment uses

Commercial and residential

Pittsburgh, Pennsylvania, has successfully converted{{when|date=February 2017}} numerous former steel mill sites into high-end residential, shopping, and offices. Examples of brownfield redevelopment in Pittsburgh include:

• In Pittsburgh's Squirrel Hill neighborhood, a former slag dump for steel mills was turned into a $243 million residential development called Summerset at Frick Park.
• In Pittsburgh's South Side neighborhood, a former LTV Steel mill site was transformed into Southside Works, a mixed-use development that includes high-end entertainment, retail, offices, and housing.
• In the Hazelwood (Pittsburgh) neighborhood, a former Jones and Laughlin steel mill site was transformed into a $104 million office park called Pittsburgh Technology Center.
• In Herr's Island, a {{convert|42|acre|ha|adj=on|order=flip}} island on the western bank of the Allegheny River, a former rail stop for livestock and meatpacking was transformed into Washington's Landing, a waterfront center for commerce, manufacturing, recreation and upscale housing

Parks

Some of the most striking examples of reclaimed brownfields are seen in park spaces.

Gas Works Park

• In Seattle, rusted remains of a gasworks were left in place to add character to Gas Works Park. In Providence, Rhode Island, The Steel Yard is a "landscape for learning" built over a once lead contaminated brownfield.^[30]

[https://www.asla.org/awards/2006/06winners/309.html Alumnai Valley]

• On the Wellesley College campus, parking lots were removed from Alumnae Valley to restore it into a wetlands.^[31]

[https://www.asla.org/NewsReleaseDetails.aspx?id=53383 Zhongshan Shipyard Park] – Turenscape

• Built on the site of the deserted shipyard, the Zhongshan Shipyard Park reflects the remarkable 50-year history of socialist China, including the Cultural Revolution. The challenging setting included fluctuating water levels, Remnant rust docks and machinery, and tree preservation, and concerns of flood control versus old trees protection.

[https://www.asla.org/awards/2004/04winners/entry557.html Seonyudo Park, Seoul] – SeoAhn Total Landscape

• On the island of Seonyudo in Seoul, Seonyudo Park is created from a retired water purification plant.^[32]

[https://www.asla.org/2016awards/173014.html Ningbo Eco-Corridor] – SWA Architects

• In Ningbo, China, a brownfield was turned into a 2 mile long urban filter and natural habitat, the Ningbo Eco-Corridor.^[33]

[https://www.asla.org/2010awards/006.html Shanghai Houton Park] – Turenscape

• In Shanghai, China, Houtan Park was once an industrial brownfield, but now treats polluted water.^[34]

[https://www.asla.org/awards/2008/08winners/201.html Lagoon Park] – Van Atta Associates Inc

• This park achieves aesthetics, function and sustainability on a limited budget. Created wetland habitats, an inviting place for students, and a system that filters and cleans runoff—all have been incorporated into a site that was once a gravel parking lot.

[https://www.asla.org/2010awards/173.html Highline NYC] – James Corner Field Ops

• The High Line is a precedent urban park that reclaims a former elevated railroad for new use, promoting timely principles of ecological sustainability, urban regeneration and adaptive reuse. Preservation and innovation come together to establish an urban corridor for habitat, wildlife and people.

[https://www.asla.org/2010awards/033.html Tianjin Qiaoyuan Park] – Turenscape

• Through regenerative design and by changing the landform, the natural process of plant adaptation and community evolution is introduced to transform a former deserted shooting range used as a garbage dump, into a low-maintenance urban park; providing diverse nature's services for the city including containing and purifying stormwater; improving the saline–alkali soil, providing opportunities for environmental education and creating a cherished aesthetic experience.

[https://www.asla.org/2010awards/015.html Qinhuangdao Beach Restoration] – Turenscape

• Using various regenerative design techniques, a heavily eroded, badly abused and decaying beach has been ecologically recovered and successfully transformed into an aethestically pleasing and well-visited place, demonstrating landscape architects can professionally facilitate the initiatives of rebuilding a harmonious relationship between man and nature through ecological design.

[https://www.asla.org/2013awards/062.html Qianian Sanlihe Greenway] – Turenscape

• The Qian'an Sanlihe Greenway is transformed from the former garbage dump and sewage drainage. It exemplifies how a neglected landscape can be recovered as an green infrastructure and everyday landscape with restored ecosystem providing multiple services.

[https://www.asla.org/2011awards/183.html The Steel Yard] – Klopfer Martin Design Group

• The Steel Yard’s cleanup is a showcase for regenerative design in a tough environment. Within industrial Providence, our project is a public intervention that upends commonly held notions of blighted neighborhoods and shows the potential for real, actively engaged—not simply ‘adaptive’—re-use.

Regulation

United States

In the United States, Brownfield regulation and development is largely governed by state environmental agencies in cooperation with the Environmental Protection Agency (EPA). In 1995, the EPA launched the Brownfields Program, which was expanded in 2002 with the Brownfields Law.^[24]

The EPA, together with local and national government, can provide technical help and some funding for assessment and cleanup.^[24] From 2002 through 2013, the EPA awarded nearly 1,000 grants for clean up, for a total of almost $190 million. It can also provide tax incentives for cleanup that is not paid for outright; specifically, cleanup costs are fully tax-deductible in the year they are incurred.^[35] Many of the most important provisions on liability relief are contained in state codes that can differ significantly from state to state.^[36]

United Kingdom

In the United Kingdom, regulation of contaminated land comes from Part IIA of the Environmental Protection Act 1990; responsibility falls on local authorities to create a "contaminated land register". For sites with dubious past and present uses the Local Planning Authority may ask for a desktop study, which is sometimes implemented as a condition in planning applications.^[37]

See also

• Brockton Brightfield (brownfield turned into a solar power plant)
• Greyfield land
• HUD USER
• Industrial nature
• Love Canal
• Redevelopment of Mumbai mills (unused mills being re-developed)
• Regulatory Barriers Clearinghouse
• Small Business Liability Relief and Brownfields Revitalization Act
• Waste (law)

References

Further reading

• {{cite report|url=http://www.cabernet.org.uk/resourcefs/427.pdf|title=Sustainable Brownfield Regeneration|work=Concerted Action on Brownfield and Economic Regeneration Network|publisher=University of Nottingham|year=2006|isbn=0-9547474-5-3|p=3|deadurl=yes|archiveurl=https://web.archive.org/web/20150402092802/http://www.cabernet.org.uk/resourcefs/427.pdf|archivedate=2015-04-02|df=}}

External links

• United States EPA Brownfields Homepage
• Environment Agency, United Kingdom search for Brownfield
• Polluted and Dangerous: America's Worst Abandoned Properties and What Can Be Done About Them.(University of Vermont Press)
• [https://web.archive.org/web/20110210204726/http://www.emagazine.com/magazine/dirty-secrets-under-the-schoolyard Parents Demand Curbs on Schools Built on Contaminated Land]
• Photographies of French Brownfields.
• Photographies of German Brownfields.
• [https://web.archive.org/web/20050326111815/http://www.brownfieldsconference.org/ National Brownfields Conference] cosponsored by the U.S. EPA and ICMA
• Sustainability Toolkit: Environmental Models
• [https://www.asla.org/sustainablelandscapes/Vid_Brownfields.html From Industrial Wasteland to Community Park]
• [https://www.asla.org/awards/2006/06winners/309.html From Brownfield to Greenfield: A New Working Landscape for Wellesley College Wrenched from its Toxic Past]
• The Brownfields Center at Carnegie Mellon University
• [https://link.springer.com/chapter/10.1007/978-3-319-71321-2_44 Browninfo Methodology and Software for Development of Interactive Brownfield Databases]
• {{dmoz|Science/Environment/Sustainability/Community_Sustainability/Brownfields_Utilization|Brownfield Land}}

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