USDA-Forest Service, Southern Research Station, Piedmont Aquatic Research Laboratory, Department of Biology, Wake Forest University, Winston-Salem, North Carolina 27109, United States.
Environ Sci Technol. 2012 Aug 21;46(16):8595-600. doi: 10.1021/es301467q. Epub 2012 Aug 9.
This analysis examines wildlife poisoning from coal combustion waste (CCW) in the context of EPA's proposed policy that would allow continued use of surface impoundments as a disposal method. Data from 21 confirmed damage sites were evaluated, ranging from locations where historic poisoning has led to corrective actions that have greatly improved environmental conditions to those where contamination has just recently been discovered and the level of ecological impacts has yet to be determined. The combined direct and indirect cost of poisoned fish and wildlife exceeds $2.3 billion, which is enough money to construct 155 landfills with state-of-the-art composite liners and leachate collection systems. This cost is projected to increase by an additional $3.85 billion over the next 50 years, an amount that would construct 257 landfills. Evidence revealed through this study indicates the following: (1) for the past 45 years, environmental damage has been a recurring theme with surface impoundment of CCW, (2) the National Pollutant Discharge Elimination System has not been effective in preventing serious environmental damage from CCW, (3) EPA's Regulatory Impact Analysis of the costs and benefits of pollution control options fails to include benefits of avoided damages to natural resources, specifically, poisoned fish and wildlife, and (4) surface impoundments pose unacceptably high ecological risks regardless of location or design. Regulators should no longer ignore rigorous science and the lessons from multiple case examples. EPA and the United States need to show leadership on this issue by prohibiting surface impoundments, particularly since the rise in coal use in developing countries is leading to the same CCW pollution problems on a global scale.
本分析报告审视了在美国环保署(EPA)拟议政策背景下,因燃煤废弃物(CCW)导致的野生动物中毒事件。该政策允许继续将地表储池作为一种处置方法。本报告评估了 21 个确认的受损地点的数据,范围从历史上因中毒而采取纠正措施,大大改善了环境状况的地点,到最近才发现污染且生态影响程度尚未确定的地点。受污染鱼类和野生动物的直接和间接损失合计超过 23 亿美元,这足以建造 155 座配备最先进复合衬垫和渗滤液收集系统的垃圾填埋场。预计在未来 50 年内,这一成本将增加 38.5 亿美元,足以建造 257 座垃圾填埋场。本研究揭示的证据表明:(1)在过去的 45 年中,地表储池储存 CCW 一直是环境破坏的一个反复出现的主题;(2)国家污染物排放消除系统未能有效防止 CCW 造成严重的环境破坏;(3)EPA 对污染控制选项的成本和效益的监管影响分析未包括避免自然资源(特别是中毒鱼类和野生动物)损害的效益;(4)无论地点或设计如何,地表储池都构成了不可接受的高生态风险。监管机构不应再忽视严格的科学和多个案例的教训。EPA 和美国需要在这个问题上发挥领导作用,禁止地表储池,特别是因为发展中国家煤炭使用量的增加正在导致全球范围内出现同样的 CCW 污染问题。