Douglas W Scott, Maher Ali, Jafari Farhad
New Jersey Department of Transportation, Office of Maritime Resources, 1035 Parkway Avenue, PO Box 837, Trenton, New Jersey 08625, USA.
Integr Environ Assess Manag. 2005 Nov;1(4):355-64.
Since the 1997 local ban on ocean dumping of dredged sediments, the state of New Jersey has pursued a policy of environmentally sound solutions to the controversial problem of dredged material management, including beneficial use of dredged material stabilized with pozzolanic additives (SDM). A pilot study was initiated in 1998 to evaluate the use of SDM in the construction of highway embankments. Using 80,000 cubic yards of silty dredged material, 2 embankments were constructed from SDM on a commercial development area adjacent to the New York/New Jersey Harbor. This article presents the evaluation of the environmental effects of the SDM, including fugitive air emissions, leachate, and stormwater quality. Engineering properties, handling and management techniques of the SDM, constructability, and performance were also evaluated, the results of which are published elsewhere. The findings demonstrate that although there are measurable releases of contaminants to the environment from the SDM, these releases are not significant long-term threats to human health or the environment. Policies currently in place to regulate the management of SDM that include limiting placement options to previously contaminated sites with institutional and engineering controls will further reduce the potential for environmental impact and, in fact, have the potential to produce significant environmental benefit.
自1997年当地禁止向海洋倾倒疏浚沉积物以来，新泽西州一直推行一项政策，即采用环境友好型解决方案来处理疏浚物料管理这一颇具争议的问题，包括对用火山灰添加剂稳定化的疏浚物料（SDM）进行有益利用。1998年启动了一项试点研究，以评估SDM在公路路堤建设中的应用。利用8万立方码粉质疏浚物料，在纽约/新泽西港附近的一个商业开发区用SDM建造了2个路堤。本文介绍了对SDM环境影响的评估，包括无组织排放、渗滤液和雨水水质。还评估了SDM的工程特性、处理和管理技术、可施工性及性能，其结果已在其他地方发表。研究结果表明，虽然SDM会向环境中释放可测量的污染物，但这些释放对人类健康或环境并非重大的长期威胁。目前制定的监管SDM管理的政策，包括将放置选项限制在有制度和工程控制的先前受污染场地，将进一步降低环境影响的可能性，事实上，还有可能产生显著的环境效益。
