英语翻译Abstract:EPA Administrator Stephen Johnson proposed changes to the National Ambient Air Quality Standard (NAAQS) for ozone on June 20,2007; the proposal appeared in the Federal Register July 11.NAAQS are standards for outdoor (ambient) ai

英语翻译Abstract:EPA Administrator Stephen Johnson proposed changes to the National Ambient Air Quality Standard (NAAQS) for ozone on June 20,2007; the proposal appeared in the Federal Register July 11.NAAQS are standards for outdoor (ambient) ai
英语翻译
Abstract:EPA Administrator Stephen Johnson proposed changes to the National Ambient Air Quality Standard (NAAQS) for ozone on June 20,2007; the proposal appeared in the Federal Register July 11.NAAQS are standards for outdoor (ambient) air that are intended to protect public health and welfare from harmful concentrations of pollution.If the standard is changed as proposed,EPA would be concluding that protecting public health and welfare requires lower concentrations of ozone pollution than it previously judged to be safe.This report discusses the standard-setting process,the specifics of the ozone standard,and issues raised by the proposal,and it describes the steps that will follow EPA’s proposal.
The ozone standard affects a large percentage of the population:about half the U.S.population currently lives in ozone “nonattainment” areas (the term EPA uses for areas that violate the standard),156 million people in all.If the standard is strengthened as a result of the current review,as proposed,more areas would be affected,and those already considered nonattainment might have to impose more stringent emission controls.
The proposal would lower the current standard from 0.08 parts per million (ppm) averaged over 8 hours to something in the range of 0.070 to 0.075 ppm.At the lower end of that range,533 counties (83% of all counties with ozone monitors) would violate the proposed standard using the most recent three years of monitoring data.Only 104 counties exceed the current standard.Thus,a change in the standard could have widespread impacts in areas across the country.
The proposal follows a multi-year review of the science regarding ozone’s effects on public health and welfare.If promulgated in the range proposed,the new standard will set in motion a long and complicated implementation process that has far-reaching impacts for public health,for sources of pollution in numerous economic sectors,and for state and local governments.
A number of issues arise as a result of the proposal,including whether the agency’s proposed ranges for the primary and secondary standards are backed by the available science,and,within those ranges,where EPA should set the final standard.(In general,the proposed ranges are somewhat weaker than those proposed by an independent scientific review panel established under the Clean Air Act.) Whether the standards should lead to stronger federal controls on the sources of ozone pollution precursors is another likely issue,if the NAAQS is strengthened in the range proposed.EPA,the states,and Congress may also wish to consider whether the current monitoring network is adequate to detect violations of a more stringent standard.Only 639 of the nation’s 3,000 counties have ozone monitors in place.With most of those monitors showing violations of the proposed standard,questions arise as to air quality in unmonitored counties.

英语翻译Abstract:EPA Administrator Stephen Johnson proposed changes to the National Ambient Air Quality Standard (NAAQS) for ozone on June 20,2007; the proposal appeared in the Federal Register July 11.NAAQS are standards for outdoor (ambient) ai
摘要：EPA管理员斯蒂芬・约翰逊在2007年6月20日的臭氧的会议中提出了对全国自由流通的空气质量标准(NAAQS)的变动; 提案出现于7月11日,NAAQS是室外的联邦公报(四周)空气的标准意欲保护公共卫生和福利免受污染的有害的集中.如果标准按照提议被改变,EPA认为,将保护公共卫生,并且福利比它以前判断臭氧污染安全的要求更低更集中.这个报告谈论立标准过程、臭氧标准的提案提出的具体和问题,并且它描述将跟随EPA’s提案的步.
The臭氧标准影响人口的大百分比：一半美国人口在臭氧“nonattainment”区域(违犯标准)的区域的期限EPA用途,156总计的百万人民当前住.由于当前回顾,如果标准被加强,如提议,更多区域是受影响,并且那些已经考虑了nonattainment也许必须强加更加严密的排出物控制.
提案将降低从0.08部分的当前标准每百万(ppm)平均8个小时对某事在0.070到0.075 ppm范围内.在那个范围的末端,533个县(83%有臭氧显示器的所有县)使用最近三年监视数据,将违犯提出的标准.仅104个县超出当前标准.因此,在标准上的一个变化在区域能全国各地有普遍冲击.
The提案跟随科学的几年的回顾关于ozone’s作用的对公共卫生和福利.如果公布在提出的范围,新的标准在行动有广远的冲击公共卫生的,污染源的在许多经济部门和州和当地政府的一个长和复杂的实施过程中将设置.
由于提案,一定数量的问题出现,包括agency’s是否提议主要和次要标准的范围由可利用的科学支持,和,在那些范围之内,EPA应该规定最后的标准.(一般来说,一个独立科学复查小组比那些有些微弱提议的提出的范围建立在空气清洁法案之下.) 标准是否应该导致在臭氧污染前体的来源的更强的联邦控制是另一个可能的问题,如果NAAQS在提出的范围被加强.EPA、状态和国会也许也希望考虑当前监视网络是否是充分的查出侵害一个严格的标准.仅639 nation’s 3,000县有到位臭氧显示器.显示侵害提出的标准的大多那些显示器,问题出现至于空气质量在不受监控的县.