Kaufman Martin M, Murray Kent S, Rogers Daniel T
Dep. of Earth and Resource Science, Univ. of Michigan-Flint, Flint, MI 48502, USA.
J Environ Qual. 2003 Mar-Apr;32(2):490-9. doi: 10.2134/jeq2003.4900.
A model is created for assessing the redevelopment potential of brownfields. The model is derived from a space and time conceptual framework that identifies and measures the surface and subsurface risk factors present at brownfield sites. The model then combines these factors with a contamination extent multiplier at each site to create an index of redevelopment potential. Results from the application of the model within an urbanized watershed demonstrate clear differences between the redevelopment potential present within five different near-surface geologic units, with those units containing clay being less vulnerable to subsurface contamination. With and without the extent multiplier, the total risk present at the brownfield sites within all the geologic units is also strongly correlated to the actual costs of remediation. Thus, computing the total surface and subsurface risk within a watershed can help guide the remediation efforts at broad geographic scales, and prioritize the locations for redevelopment.
创建了一个用于评估棕地再开发潜力的模型。该模型源自一个时空概念框架，该框架识别并测量棕地场地存在的地表和地下风险因素。然后，该模型将这些因素与每个场地的污染程度乘数相结合，以创建再开发潜力指数。在一个城市化流域内应用该模型的结果表明，五个不同近地表地质单元的再开发潜力存在明显差异，其中含有粘土的单元对地下污染的脆弱性较小。无论有无范围乘数，所有地质单元内棕地场地存在的总风险也与实际修复成本密切相关。因此，计算流域内的地表和地下总风险有助于在广泛的地理尺度上指导修复工作，并对再开发地点进行优先排序。
