The article discusses the facts about National Ambient Air Quality Standards (NAAQs) and its application to electricity generating units in the U.S. It explains the two types of NAAQs, primary standards and secondary standards, for six pollutants including carbon monoxide, lead, and nitrogen. It ...
National Ambient Air Quality Standards Primary Standards Level 9 ppm (10 mg/m3) 35 ppm (40 mg/m3) 0.15 µg/m3 (2) 1.5 µg/m3 53 ppb (3) (Arithmetic Average) 100 ppb 150 µg/m3 Secondary Standards Level None Pollutant Carbon Monoxide Averaging Time 8-hour (1) Averaging Time 1...
Primary standards set limits to protect public health, including the health of "sensitive" populations such as asthmatics, children, and the elderly. Secondary standards set limits to protect public welfare, including protection against decreased visibility, damage to animals, crops, vegetation, and ...
NationalAmbientAirQualityStandards PrimaryStandardsSecondaryStandards PollutantLevelAveragingTimeLevelAveragingTime Carbon Monoxide 9ppm (10mg/m 3 ) 8-hour (1) None 35ppm (40mg/m 3 ) 1-hour (1) Lead0.15µg/m 3 (2) Rolling3-MonthAverageSameasPrimary 1.5µg/m 3 QuarterlyAverageSameasPrimary...
Standards(NAAQS) 《国家环境空气质量标准》(NAAQS) EPAsetsambientstandardstoprotectpublichealthandwelfare 环保署设置了旨在保护公共健康和福祉的环境标准 AreaDesignations 地区划分 EPAdesignatesareasasattainingornotattainingthestandards 环保署将各个地区划分为达标或未达标地区 Summaryof...
plans to quickly attain the standards, and to maintain attainmentnEPA reviews and approves the SIPsn州级实施计划 (SIP)n各州制定旨在快速达标并保持达标状态的计划n环保署 审查和批准 SIPNAAQS 国家环境空气标准国家环境空气标准nEPA sets national standards for pollutants without considering costnPrimary ...
sensitive" populations such as asthmatics, children, and the elderly. such as asthmatics, children, and the elderly. such as asthmatics, children, and the elderly. SecondarystandardsSecondarystandardsSecondarystandards set limits set ...
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(ppm). Further, API supports EPA's proposal to retain the form of the secondary standard equal to the primary standard, in this instance at 0.075 ppm. API finds that the science does not support a change in these standards and that the current standards protect public health and welfare ...
Last November, the US Environmental Protection Agency (EPA) proposed a rule that would lower the eight-hour primary and secondary ozone standards from the current level of 75 parts per billion to a level between 70 and 65 parts per billi... Greene,Jon - 《Natural Gas & Electricity》 被引...