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Brownfield redevelopment, particularly for new housing, is viewed by authorities and the electorate as preferable to building on greenbelt or floodplains. However, in many cases, brownfield sites have suffered from historical contamination by metals, acidity and/or hydrocarbons. Conventional approaches to remediation, including soil washing and excavation, often make remediation options financially prohibitive. Under the New Regime, identified land contamination needs to be treated such that potential migration of contaminants to human receptors is reduced to an acceptable risk level. Conventionally a variety of stabilisation techniques are used to retain contaminants, notably metals, in place. These include treatment with lime, pulverised fuel ash (PFA) or other materials, many of which are harmful to handle, transient in their treatment effectiveness, or are themselves detrimental to the ecological recovery of the treated area.

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Date Of Record Release 2010-01-17 16:31:44
Description Brownfield redevelopment, particularly for new housing, is viewed by authorities and the electorate as preferable to building on greenbelt or floodplains. However, in many cases, brownfield sites have suffered from historical contamination by metals, acidity and/or hydrocarbons. Conventional approaches to remediation, including soil washing and excavation, often make remediation options financially prohibitive. Under the New Regime, identified land contamination needs to be treated such that potential migration of contaminants to human receptors is reduced to an acceptable risk level. Conventionally a variety of stabilisation techniques are used to retain contaminants, notably metals, in place. These include treatment with lime, pulverised fuel ash (PFA) or other materials, many of which are harmful to handle, transient in their treatment effectiveness, or are themselves detrimental to the ecological recovery of the treated area.
Classification
Resource Type
Format
Subject
Source Environmental Thinking
Keyword Soil contamination, Cleanup, Treatment, Remediation, Brownfields, Hazardous substances
Date Of Record Creation 2010-01-17 16:26:13
Education Level
Date Last Modified 2010-01-18 15:51:14
Creator Stephen Young
Language English
Date Record Checked: 2010-01-17 00:00:00 (W3C-DTF)

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