环保署宣布内布拉斯加州 York 超级基金场地土壤清理达标，工期缩短十多年
美国环境保护署（EPA）2026年11月12日宣布，位于内布拉斯加州 York 的 PCE Southeast Contamination 超级基金场地第一操作单元（Operable Unit 01）土壤清理目标已经达成，较原估计大幅提前。
该单元又称 Seventh Street 源区。实验室分析确认，按场地决策记录设定的四氯乙烯（PCE）土壤清理目标，已在全部采样地点与深度达标。环保署采用原位热修复技术，把受污染土壤加热、使污染物汽化后处理，取代挖除污染土这一更昂贵、更耗时、扰动更大的方案；源区清理目标约两年即达成，而挖除方案估计需15年以上。
环保署第7区局长 Jim Macy 表示，用热修复系统在尽量减少对社区影响的同时加速清理，体现了环保署以高标准科学修复污染场地、把土地交还腹地社区的承诺。第一操作单元接下来转入恢复阶段，包括拆除热修复系统部件与工棚、移除场地旧混凝土垫层。
该场地的第二操作单元（Fifth Street 源区）已于2025年达成清理目标并在当年夏季开展恢复工作；两个源区均达标后，修复工作将转向第三操作单元的受污染地下水羽流。环保署2026年6月3日推出「超级基金解决方案」倡议，旨在加速全国1,340多处国家优先清单（NPL）超级基金场地的清理。（来源：美国环境保护署）
EPA Achieves Soil Cleanup Goals at PCE Superfund Site in York, Nebraska, More Than a Decade Early
The U.S. Environmental Protection Agency (EPA) announced on November 12, 2026, that it has achieved its soil cleanup goals in Operable Unit 01 at the PCE Southeast Contamination Superfund site in York, Nebraska, far ahead of the original estimate.
Laboratory analysis of soils at Operable Unit 01, also known as the Seventh Street source area, confirmed that the cleanup goals for tetrachloroethene (PCE) set out in the site's Record of Decision have been achieved at all sampling locations and depths. EPA used in-situ thermal remediation, which heated the contaminated soil and turned the contamination into vapor before treatment, replacing the more expensive, time-consuming and disruptive remedy of removing the contaminated soil. EPA estimates it took only about two years to meet the cleanup goals at the source areas, compared with an estimate of more than 15 years under the removal remedy.
EPA Region 7 Administrator Jim Macy said using the thermal remediation system to accelerate cleanup while minimizing impacts on the community demonstrates EPA's commitment to restoring contaminated sites and returning them to Heartland communities through gold-standard science. Operable Unit 01 will now transition to restoration activities, including removing components of the thermal remediation system and work trailers and removing the old concrete pad from the property.
Cleanup goals were met at the Fifth Street source area (Operable Unit 02) in 2025, with restoration activities taking place that summer. With both source areas complete, remediation at the site will now shift to the contaminated groundwater plume in Operable Unit 03. On June 3, 2026, EPA launched its Superfund Solutions initiative to accelerate cleanups of more than 1,340 Superfund sites on the National Priorities List. (Source: U.S. Environmental Protection Agency)
来源：美国环境保护署
发布：GSM·美国（发布链接）
图片来源：图：位于华盛顿特区的美国环境保护署（EPA）总部大楼（联邦固定图库）。 / Photo: U.S. Environmental Protection Agency (EPA) headquarters building in Washington, D.C. (federal asset library).
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