[20030904]RS21611_臭氧和颗粒空气质量：是否应延长实现目标的最后期限？.pdf

1Thereisavast andgrowingliteratureonthehealtheffectsofparticulates. Forabriefsummaryindicating some dimensions of the estimated premature mortality, see Statement of JonathanLevy, Harvard School of Public Health, at “Health Effects of PM-2.5 Emissions,” Hearing,Senate Environment andPublicWorksCommittee,October2, 2002. Professor Levyconcludedthatparticulateemissionsfrompowerplantsalonecause30,000prematuredeathsperyearintheUnited States. More recent research indicates a correlation between particulate concentrationsand infant mortality. See “Study Finds Drop in Infant Mortality Corresponds with Decrease in(continued.)Congressional Research Service The Library of CongressCRS Report for CongressReceived through the CRS WebOrder Code RS21611September 4, 2003Ozone and Particulate Air Quality: ShouldDeadlines for Attainment Be Extended?name r edactedSpecialist in Environmental PolicyResources, Science, and Industry DivisionSummaryOverthenextyear,CongressandtheEnvironmentalProtectionAgency(EPA)willconsiderwhethertomaintaintheCleanAirActsstrictrequirements forareas thathavenot attained air qualitystandards. These “nonattainment” areas, manyof which will beso designated for the first time a