Bair E Scott, Metheny Maura A
Department of Geological Sciences, Ohio State University, Columbus 43210, USA.
Ground Water. 2002 Nov-Dec;40(6):657-68. doi: 10.1111/j.1745-6584.2002.tb02553.x.
Remediation of ground water and soil contamination at the Wells G & H Superfund Site, Woburn, Massachusetts, uses technologies that reflect differences in hydrogeologic settings, concentrations of volatile organic compounds (VOCs), and costs of treatment. The poorly permeable glacial materials that overlie fractured bedrock at the W.R. Grace property necessitate use of closely spaced recovery wells. Contaminated ground water is treated with hydrogen peroxide and ultraviolet (UV) oxidation. At UniFirst, a deep well completed in fractured bedrock removes contaminated ground water, which is treated by hydrogen peroxide, UV oxidation, and granular activated carbon (GAC). The remediation system at Wildwood integrates air sparging, soil-vapor extraction, and ground water pumping. Air stripping and GAC are used to treat contaminated water; GAC is used to treat contaminated air. New England Plastics (NEP) uses air sparging and soil-vapor extraction to remove VOCs from the unsaturated zone and shallow ground water. Contaminated air and water are treated using separate GAC systems. After nine years of operation at W.R. Grace and UniFirst, 30 and 786 kg, respectively, of VOCs have been removed. In three years of operation, 866 kg of VOCs have been removed at Wildwood. In 15 months of operation, 36 kg of VOCs were removed at NEP. Characterization work continues at the Olympia Nominee Trust, Whitney Barrel, Murphy Waste Oil, and Aberjona Auto Parts properties. Risk assessments are being finalized that address heavy metals in the floodplain sediments along the Aberjona River that are mobilized from the Industri-Plex Superfund Site located a few miles upstream.
马萨诸塞州沃本的格氏和贺氏超级基金场地的地下水与土壤污染修复工作，采用了能反映水文地质环境差异、挥发性有机化合物（VOCs）浓度及处理成本差异的技术。WR格雷斯公司场地中覆盖在裂隙基岩之上的低渗透性冰川物质，使得必须使用间距紧密的回收井。受污染的地下水采用过氧化氢和紫外线（UV）氧化法进行处理。在优耐特公司，一口位于裂隙基岩中的深井抽取受污染的地下水，该水经过氧化氢、UV氧化及颗粒活性炭（GAC）处理。怀尔德伍德的修复系统整合了空气喷射、土壤气相抽提和地下水抽取。空气吹脱和GAC用于处理受污染的水；GAC用于处理受污染的空气。新英格兰塑料公司（NEP）采用空气喷射和土壤气相抽提从非饱和带和浅层地下水中去除VOCs。受污染的空气和水分别采用GAC系统进行处理。在WR格雷斯公司和优耐特公司运行9年后，分别去除了30千克和786千克的VOCs。在怀尔德伍德运行3年后，去除了866千克的VOCs。在NEP运行15个月后，去除了36千克的VOCs。奥林匹亚提名人信托公司、惠特尼桶厂、墨菲废油公司及阿贝乔纳汽车配件公司场地的特征描述工作仍在继续。针对从上游几英里处的工业综合超级基金场地迁移而来的阿贝乔纳河漫滩沉积物中的重金属，风险评估工作正在收尾。
