Knowledge (XXG)

National Ambient Air Quality Standards

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254:(Pb): In the mid-1970s, lead was listed as a criteria air pollutant that required NAAQS regulation. In 1977, the EPA published a document which detailed the Air Quality Criteria for lead. This document was based on the scientific assessments of lead at the time. Based on this report (1977 Lead AQCD), the EPA established a "1.5 μg/m (maximum quarterly calendar average) Pb NAAQS in 1978." The Clean Air Act requires periodic review of NAAQS, and new scientific data published after 1977 made it necessary to revise the standards previously established in the 1977 Lead AQCD document. An Addendum to the document was published in 1986 and then again as a Supplement to the 1986 AQCD/Addendum in 1990. In 1990, a Lead Staff Paper was prepared by the EPA's Office of Air Quality Planning and Standards (OPQPS), which was based on information presented in the 1986 Lead/AQCD/Addendum and 1990 Supplement, in addition to other OAQPS sponsored lead exposure/risk analyses. In this paper, it was proposed that the Pb NAAQS be revised further and presented options for revision to the EPA. The EPA elected to not modify the Pb NAAQS further, but decided to instead focus on the 1991 U.S. EPA Strategy for Reducing Lead Exposure. The EPA concentrated on regulatory and remedial clean-up efforts to minimize Pb exposure from numerous non-air sources that caused more severe public health risks, and undertook actions to reduce air emissions. 260:(CO): The EPA set the first NAAQS for carbon monoxide in 1971. The primary standard was set at 9 ppm averaged over an 8-hour period and 35 ppm over a 1-hour period. The majority of CO emitted into the ambient air is from mobile sources. The EPA has reviewed and assessed the current scientific literature with respect to CO in 1979, 1984, 1991, and 1994. After the review in 1984 the EPA decided to remove the secondary standard for CO due to lack of significant evidence of the adverse environmental impacts. On January 28, 2011, the EPA decided that the current NAAQS for CO were sufficient and proposed to keep the existing standards as they stood. The EPA is strengthening monitoring requirements for CO by calling for CO monitors to be placed in strategic locations near large urban areas. Specifically, the EPA has called for monitors to be placed and operational in CBSA's (core based statistical areas) with populations over 2.5 million by January 1, 2015; and in CBSA's with populations of 1 million or more by January 1, 2017. In addition they are requiring the collocation of CO monitors with NO 1444: 223:): Ozone found on the surface-level, also known as tropospheric ozone is also regulated by the NAAQS under the Clean Air Act. Ozone was originally found to be damaging to grapes in the 1950s. The US EPA set "oxidants" standards in 1971, which included ozone. These standards were created to reduce agricultural impacts and other related damages. Like lead, ozone requires a reexamination of new findings of health and vegetation effects periodically. This aspect necessitated the creation of a US EPA criteria document. Further analysis done in 1979 and 1997 made it necessary to significantly modify the pollution standards. 246:, fine particles: 2.5 μm in size or less. Particulate Matter (PM) was listed in the 1996 Criteria document issued by the EPA. In April 2001, the EPA created a Second External Review Draft of the Air Quality Criteria for PM, which addressed updated studies done on particulate matter and the modified pollutant standards done since the First External Review Draft. In May 2002, a Third External Review Draft was made, and the EPA revised PM requirements again. After issuing a fourth version of the document, the EPA issued the final version in October 2004. 389:. Primary standards are designed to protect human health, with an adequate margin of safety, including sensitive populations such as children, the elderly, and individuals suffering from respiratory diseases. Secondary standards are designed to protect public welfare, damage to property, transportation hazards, economic values, and personal comfort and well-being from any known or anticipated adverse effects of a pollutant. A district meeting a given standard is known as an "attainment area" for that standard, and otherwise a "non-attainment area". 31: 207:
them that assess the latest available scientific information on nature and effects of ambient exposure to them; (3) to set primary NAAQS to protect human health with adequate margin of safety and to set secondary NAAQS to protect against welfare effects (e.g., effects on vegetation, ecosystems, visibility, climate, manmade materials, etc); and (5) to periodically review and revise, as appropriate, the criteria and NAAQS for a given listed pollutant or class of pollutants."
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pollutants. Also, in 2010, the EPA decided to ensure compliance by strengthening monitoring requirements, calling for increased numbers of monitoring systems near large urban areas and major roadways. On March 20, 2012, the EPA "took final action" to maintain the existing NAAQS as they stand. The national average of NO
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monitors in urban areas having a population of 1 million for more. As of May 2011 there were approximately 328 operational CO monitors in place nationwide. The EPA has provided some authority to the EPA Regional Administrators to oversee case-by-case requested exceptions and in determining the need
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family. The EPA first set primary and secondary standards in 1971. Dual primary standards were set at 140 ppb averaged over a 24-hour period, and at 30 ppb averaged annually. The secondary standard was set at 500 ppb averaged over a 3-hour period, not to be exceeded more than once a
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The EPA established the NAAQS according to Sections 108 and 109 of the U.S. Clean Air Act, which was last amended in 1990. These sections require the EPA "(1) to list widespread air pollutants that reasonably may be expected to endanger public health or welfare; (2) to issue air quality criteria for
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as needing standards on a national level. The Clean Air Act requires the EPA to set US National Ambient Air Quality Standards (NAAQS) for the six CAPs. The NAAQS are health based and the EPA sets two types of standards: primary and secondary. The primary standards are designed to protect the health
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affecting sensitive populations such as asthmatics. The Agency did not establish this new NAAQS and kept the existing standards. In 2010 the EPA decided to replace the dual primary standards with a new 1-hour standard set at 75 ppb. On March 20, 2012, the EPA "took final action" to maintain
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primary standard set at 100 ppb; the annual average of 0.053 ppm remained the same. Also considered was a new 1-hour secondary standard of 100 ppb. This was the first time the EPA reviewed the environmental impacts separate from the health impacts for this group of criteria air
297:, all of which are located in the Hawaii Volcanoes National Park. The violations occurred between 2007–2008 and the state of Hawaii suggested these should be exempt from regulatory actions due to an 'exceptional event' (volcanic activity). Since 1980 the national concentration of SO 265:
for additional monitoring systems above the minimum required. The EPA reports the national average concentration of CO has decreased by 82% since 1980. The last nonattainment designation was deemed in attainment on September 27, 2010. Currently all areas in the US are in attainment.
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were both set at an annual average of 0.053 ppm. The EPA reviewed this NAAQS in 1985 and 1996, and in both cases concluded that the existing standard was sufficient. The most recent review by the EPA occurred in 2010, resulting in a new 1-hour
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of 'sensitive' populations such as asthmatics, children, and the elderly. The secondary standards are concerned with protecting the environment. They are designed to address visibility, damage to crops, vegetation, buildings, and animals.
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system during the summer "ozone season". This is intended to reduce ground-level ozone in non-attainment areas downwind of industrial sources like power plants, incinerators, and industrial furnaces, often in other
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As of June 15, 2005, the 1-hour ozone standard no longer applies to areas designated with respect to the 8-hour ozone standard (which includes most of the United States, except for portions of 10 states).
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is reported to be averaging around 10–20 ppb, and is expected to decrease further with new mobile source regulations. Currently all areas of the US are classified as in attainment.
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family as it is of the most concern due to its quick formation and contribution to the formation of harmful ground level ozone. In 1971 the primary and secondary NAAQS for NO
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in the ambient air has decreased by 83%. Annual average concentrations hover between 1–6 ppb. Currently all ACQR's are in attainment for SO
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expected number of days per calendar year, with maximum hourly average concentration greater than 0.12 ppm, is equal to or less than 1
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An air quality control region is an area, designated by the federal government, where communities share a common air pollution problem.
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year. The most recent review took place in 1996 during which the EPA considered implementing a new NAAQS for 5-minute peaks of SO
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Standards are required to "accurately reflect the latest scientific knowledge," and are reviewed every five years by a
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cover many other chemicals, and require the maximum achievable reduction that the EPA determines is feasible.
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EPA Alumni Association Oral History Video "Early Implementation of the Clean Air Act of 1970 in California."
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Michigan Department Of Environmental Quality, January 2004. What is an Air Contaminant Pollutant? Fact Sheet
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US counties that are designated "nonattainment" for the Clean Air Act's NAAQS, as of September 30, 2017
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the existing NAAQS as they stood. Only three monitoring sites have exceeded the current NAAQS for SO
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In April 2023, the EPA finalized its "Good Neighbor Plan", which phases in tighter standards for NO
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EPA has set NAAQS for six major pollutants listed as below. These six are also the
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The six criteria air pollutants were the first set of pollutants recognized by the
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can designate a measurement device using an established technological basis as a
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Annual fourth-highest daily maximum 8-hour concentration, averaged over 3 years
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Fact Sheet – Air Quality Designations for the 2010 Primary Nitrogen Dioxide (NO
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Los Angeles County Flood Control District v. Natural Resources Defense Council
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99th Percentile of 1-hour daily maximum concentrations, averaged over 3 years
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concentrations has dropped by 52% since 1980. The annual concentration for NO
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http://www.epa.gov/airquality/nitrogenoxides/designations/pdfs/20120120FS.pdf
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is of greatest interest and is used as the indicator for the entire SO
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Baltimore Gas & Electric Co. v. Natural Resources Defense Council
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refers to the oxides of sulfur, a highly reactive group of gases. SO
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Not to be exceeded more than once per year on average over 3 years
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Scenic Hudson Preservation Conference v. Federal Power Commission
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is the oxide measured and used as the indicator for the entire NO
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Weyerhaeuser Company v. United States Fish and Wildlife Service
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Babbitt v. Sweet Home Chapter of Communities for a Great Oregon
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98th percentile of 1-hour daily maximum, averaged over 3 years
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National Association of Manufacturers v. Department of Defense
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National Association of Home Builders v. Defenders of Wildlife
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National Association of Home Builders v. Defenders of Wildlife
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HollyFrontier Cheyenne Refining v. Renewable Fuels Association
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US Environmental Protection Agency - Criteria Air Pollutants
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Coeur Alaska, Inc. v. Southeast Alaska Conservation Council
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S. D. Warren Co. v. Maine Board of Environmental Protection
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South Florida Water Management District v. Miccosukee Tribe
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National Emissions Standards for Hazardous Air Pollutants
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National Emissions Standards for Hazardous Air Pollutants
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showing non-attainment, maintenance, and attainment areas
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EPA summary of the National Ambient Air Quality Standards
1350:"The latest chapter in EPA vs environmental science saga" 1181:"Sulfur Dioxide | Air & Radiation | US EPA" 185:
National Emissions Standards for Hazardous Air Pollutants
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Metropolitan Edison Co. v. People Against Nuclear Energy
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Marine Protection, Research, and Sanctuaries Act of 1972
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Congressional Budget and Impoundment Control Act of 1974
396:(CASAC), consisting of "seven members appointed by the 3013:
United States Fish and Wildlife Service v. Sierra Club
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Alaska Department of Environmental Conservation v. EPA
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Friends of the Earth v. Laidlaw Environmental Services
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Emergency Daylight Saving Time Energy Conservation Act
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National Institute for Occupational Safety and Health
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Alien Species Prevention and Enforcement Act of 1992
1103:"Air Quality Criteria for Lead (Final Report, 2006)" 152:). These are typically emitted from many sources in 4847: 4705: 4586: 4446: 4437: 4247: 4042: 3955: 3925: 3874: 3865: 3649: 3601: 3369:
Federal Insecticide, Fungicide, and Rodenticide Act
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Consolidated Farm and Rural Development Act of 1972
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Federal Supplemental Educational Opportunity Grants
1871: 1694: 1549: 52: 3499:Emergency Planning and Community Right-to-Know Act 848:. A complete list of FRMs and FEMs is available. 3553:Coalition for Responsible Regulation, Inc. v. EPA 77:) are limits on atmospheric concentration of six 3611:Agency for Toxic Substances and Disease Registry 3375:Marine Protection, Research, and Sanctuaries Act 2741:BP P.L.C. v. Mayor and City Council of Baltimore 1416:Gilliam, Joseph H.; Hall, Eric S. (2016-07-13). 2413:National Oceanic and Atmospheric Administration 2275:Agriculture and Consumer Protection Act of 1973 1241: 1239: 1237: 89:, and other health hazards. Established by the 3621:National Highway Traffic Safety Administration 2865:Department of Transportation v. Public Citizen 2787:Department of Transportation v. Public Citizen 2097:National Highway Traffic Safety Administration 4972:United States Environmental Protection Agency 3843: 3631:United States Environmental Protection Agency 3281:Watershed Protection and Flood Prevention Act 2658: 2155:Occupational Safety and Health Administration 1526: 1445:"Document Display | NEPIS | US EPA" 327:), all of which are covered in the NAAQS. NO 172:. In many cases they are the products of the 91:United States Environmental Protection Agency 8: 2841:Chevron v. Natural Resources Defense Council 108:, for which limits are set in the NAAQS are 3487:Uranium Mill Tailings Radiation Control Act 2803:Winter v. Natural Resources Defense Council 2795:Norton v. Southern Utah Wilderness Alliance 2369:Federal Environmental Pesticide Control Act 1982:Health Maintenance Organization Act of 1973 1947:Equal Educational Opportunities Act of 1974 647:Not to be exceeded more than once per year 623:Not to be exceeded more than once per year 476:Not to be exceeded more than once per year 4709: 4443: 3871: 3850: 3836: 3828: 3481:Surface Mining Control and Reclamation Act 2889:American Electric Power Co. v. Connecticut 2881:Environmental Defense v. Duke Energy Corp. 2833:Train v. Natural Resources Defense Council 2748: 2665: 2651: 2643: 2215:Securities Investor Protection Corporation 1533: 1519: 1511: 3239:North Pacific Fur Seal Convention of 1911 3208:Forest Service Organic Administration Act 2849:Whitman v. American Trucking Associations 2185:Lead-Based Paint Poisoning Prevention Act 1263:) National Ambient Air Quality Standards 3202:Yellowstone National Park Protection Act 1954:Equal Employment Opportunity Act of 1972 1504:) is being considered for deletion. See 535:9.0 μg/m (12 μg/m prior to May 6, 2024) 409: 29: 3636:United States Fish and Wildlife Service 2478:Water Resources Development Act of 1974 2303:Trans-Alaska Pipeline Authorization Act 2192:Poison Prevention Packaging Act of 1970 2171:U.S. Consumer Product Safety Commission 1130:http://www.epa.gov/ncea/pdfs/coaqcd.pdf 914: 589:98th percentile, averaged over 3 years 394:Clean Air Scientific Advisory Committee 27:US EPA limits on certain air pollutants 4947:Environmental law in the United States 3729:National Ambient Air Quality Standards 3572:Infrastructure Investment and Jobs Act 3469:Resource Conservation and Recovery Act 3457:Hazardous Materials Transportation Act 3131:County of Maui v. Hawaii Wildlife Fund 2376:National Ambient Air Quality Standards 2054:Legislative Reorganization Act of 1970 40:National Ambient Air Quality Standards 3817:Uranium Mill Tailings Remedial Action 3338:Environmental Quality Improvement Act 3115:Army Corps of Engineers v. Hawkes Co. 2725:Lujan v. National Wildlife Federation 2332:Environmental Quality Improvement Act 2104:Urban Mass Transportation Act of 1970 1989:Drug Abuse Prevention and Control Act 1147: 1145: 897:Portable emissions measurement system 834:National Exposure Research Laboratory 7: 3546:Energy Independence and Security Act 3517:National Environmental Education Act 1894:Minority Business Development Agency 1396:U.S. Environmental Protection Agency 1292:"Air Quality Planning and Standards" 1247:"Air Quality Planning and Standards" 1228:"Air Quality Planning and Standards" 1153:"Air Quality Planning and Standards" 1117:"Air Quality Planning and Standards" 1097: 1095: 947: 945: 920: 918: 902:Toxic Substances Control Act of 1976 3789:Significant New Alternatives Policy 3641:U.S. Global Change Research Program 2951:Southern Union Co. v. United States 2897:Utility Air Regulatory Group v. EPA 2811:Monsanto Co. v. Geertson Seed Farms 2436:Great Lakes Water Quality Agreement 2201:Public Health Cigarette Smoking Act 1908:Alaska Native Claims Settlement Act 1839:Prevention of Nuclear War Agreement 1348:Goldstein, Bernard D (2018-12-11). 565:Annual mean, averaged over 3 years 541:Annual mean, averaged over 3 years 4937:Air pollution in the United States 3566:America's Water Infrastructure Act 3556:(D.C. Cir. Court of Appeals, 2012) 3275:Fish and Wildlife Coordination Act 3035:United States v. Riverside Bayview 2973:Tennessee Valley Authority v. Hill 2943:City of Philadelphia v. New Jersey 2289:Emergency Petroleum Allocation Act 2208:Securities Investor Protection Act 2141:Occupational Safety and Health Act 2125:Economic Stabilization Act of 1970 2047:District of Columbia Home Rule Act 979:"Criteria Air Pollutants | US EPA" 25: 3582:(5th Cir. Court of Appeals, 2022) 3344:National Environmental Policy Act 3322:(2nd Cir. Court of Appeals, 1965) 3083:Entergy Corp. v. Riverkeeper Inc. 3043:SWANCC v. Army Corps of Engineers 2404:Reorganization Plan No. 3 of 1970 2339:National Environmental Policy Act 1508:to help reach a consensus. › 4911: 4910: 3769:Presidential Climate Action Plan 3749:New Source Performance Standards 3616:Council on Environmental Quality 3505:Emergency Wetlands Resources Act 2390:New Source Performance Standards 2325:Council on Environmental Quality 48: 3405:Water Resources Development Act 3362:Coastal Zone Management Program 2674:United States environmental law 2427:Coastal Zone Management Program 2348:Environmental Protection Agency 2111:Federal-Aid Highway Act of 1973 2026:Federal Contested Elections Act 2010:Drug Enforcement Administration 1968:End Stage Renal Disease Program 1424:Environmental Protection Agency 1374:Environmental Protection Agency 882:Atmospheric dispersion modeling 200:Environmental Protection Agency 3696:Environmental impact statement 3676:Corporate average fuel economy 3560:Lautenberg Chemical Safety Act 2981:Lujan v. Defenders of Wildlife 2464:Endangered Species Act of 1973 2457:Endangered Species Act of 1969 2061:Congressional Research Service 1641:VP confirmation of Gerald Ford 227:Atmospheric particulate matter 118:atmospheric particulate matter 1: 2282:Federal Energy Administration 2033:Federal Election Campaign Act 1818:Anti-Ballistic Missile Treaty 977:EPA, OAR, US (9 April 2014). 93:(EPA) under authority of the 3876:Pollution / quality 3475:Toxic Substances Control Act 2443:Marine Mammal Protection Act 2355:Clean Air Amendments of 1970 1975:Supplemental Security Income 1917:Education Amendments of 1972 1305:US EPA, OA (15 March 2023). 380:The standards are listed in 323:O), and nitrogen dioxide (NO 4962:Natural resource management 4942:Air pollution organizations 3734:National Climate Assessment 3681:Discharge Monitoring Report 3534:Food Quality Protection Act 3356:Coastal Zone Management Act 2420:Coastal Zone Management Act 2178:Consumer Product Safety Act 1961:National Cancer Act of 1971 1599:1970 Lincoln Memorial visit 1542:Presidency of Richard Nixon 1501:Presidency of Richard Nixon 525:Fine particulate matter (PM 4988: 3511:Global Change Research Act 3161:United States v. Bestfoods 2582:Senate Watergate Committee 2162:Permissible exposure limit 1940:Rehabilitation Act of 1973 1685:Presidential Proclamations 852:Air quality control region 812: 4906: 4712: 4447:Types / location 3784:Section 608 Certification 3724:Maximum contaminant level 3661:Best available technology 3307:(1963, 1970, 1977, 1990) 3287:Air Pollution Control Act 3251:Migratory Bird Treaty Act 2614: 2471:Oil Pollution Act of 1973 2090:Fair Credit Reporting Act 1887:Revised Philadelphia Plan 1846:Threshold Test Ban Treaty 842:Federal Equivalent Method 719: 661: 603: 524: 432: 180:or industrial processes. 18:Criteria air contaminants 3812:Toxicity category rating 3807:Total maximum daily load 3744:National Priorities List 3626:Office of Surface Mining 3451:Federal Noxious Weed Act 3352:(1972, 1977, 1987, 2014) 3326:Solid Waste Disposal Act 3067:Rapanos v. United States 2621:← Johnson administration 2254:Agricultural Act of 1970 1797:1973 Chilean coup d'état 1506:templates for discussion 1338:(see p4). July 12, 2016. 838:Federal Reference Method 235:, coarse particles: 2.5 4957:Environmental chemistry 3774:Renewable Fuel Standard 3592:Inflation Reduction Act 3399:Safe Drinking Water Act 2519:Saturday Night Massacre 2261:Farm Credit Act of 1971 2231:Alternative minimum tax 405:criteria air pollutants 102:criteria air pollutants 3387:Endangered Species Act 3332:Endangered Species Act 3214:Rivers and Harbors Act 2763:United States v. SCRAP 2709:Vermont Yankee v. NRDC 2573:United States v. Nixon 2224:Tax Reform Act of 1969 1901:Native American policy 1880:Family Assistance Plan 784:Primary and Secondary 730:Primary and Secondary 696:Primary and Secondary 672:Primary and Secondary 580:Primary and Secondary 501:Primary and Secondary 166:electricity generation 35: 4952:Environmental science 3712:Executive Order 13990 3706:Executive Order 13432 3701:Environmental justice 3586:CHIPS and Science Act 3293:Fish and Wildlife Act 3169:Guam v. United States 2701:Sierra Club v. Morton 2630:Ford administration → 2132:Smithsonian Agreement 1655:Judicial appointments 887:Contamination control 757:0.100 ppm (188 μg/m) 733:0.053 ppm (100 μg/m) 699:0.070 ppm (140 μg/m) 641:9 ppm (10 mg/m) 470:0.5 ppm (1,300 μg/m) 33: 4822:remnant natural area 4459:storage and recovery 4125:habitat conservation 3943:Deforestation (REDD) 3795:State of the Climate 3463:Magnuson–Stevens Act 3269:McSweeney-McNary Act 2921:West Virginia v. EPA 2873:Massachusetts v. EPA 2535:White House Plumbers 930:ohioepa.custhelp.com 892:Clean Air Act (1990) 675:0.12 ppm (235 μg/m) 428:Regulatory Citation 4776:Earth Overshoot Day 4350:Marine conservation 4331:non-timber products 3759:Not-To-Exceed (NTE) 3691:Environmental crime 3686:Effluent guidelines 3447:, 2014, 2016, 2022) 3187:federal legislation 2693:Missouri v. Holland 2589:impeachment process 2505:Operation Sandwedge 2240:Revenue Act of 1971 2040:1970 VRA Amendments 1788:Shanghai Communiqué 1781:1972 visit to China 1733:Paris Peace Accords 1705:International trips 1585:Second inauguration 793:Not to be exceeded 425:Exceedance Criteria 106:criteria pollutants 4761:Ecosystem services 3884:Ambient standards 3579:Louisiana v. Biden 3493:CERCLA (Superfund) 3401:(1974, 1986, 1996) 2717:Hughes v. Oklahoma 2512:Operation Gemstone 1811:1972 Moscow Summit 1567:First inauguration 1200:2016-04-15 at the 1136:2011-02-12 at the 1008:2020-02-29 at the 492:Particulate matter 217:Ground level ozone 36: 4924: 4923: 4902: 4901: 4701: 4700: 4380:genetic resources 4316:genetic resources 3951: 3950: 3859:Natural resources 3825: 3824: 3754:New Source Review 3540:Energy Policy Act 3523:Oil Pollution Act 3393:Oil Pollution Act 3381:Noise Control Act 3311:Acid Rain Program 3299:Oil Pollution Act 3263:Oil Pollution Act 3257:Clarke–McNary Act 3179: 3178: 3139:Sackett v. EPA II 2640: 2639: 2565:White House tapes 2556:list of opponents 2397:Noise Control Act 1996:Shafer Commission 1862:Space exploration 1832:Washington Summit 1726:Cambodian bombing 1634:1974 SOTU Address 1627:1973 SOTU Address 1620:1972 SOTU Address 1613:1971 SOTU Address 1606:1970 SOTU Address 1575:Bring Us Together 1082:"EPA - TTN NAAQS" 872:Air quality index 828:Detection methods 807: 806: 790:Rolling 3 months 398:EPA administrator 16:(Redirected from 4979: 4914: 4913: 4865: 4812:Natural heritage 4771:overexploitation 4710: 4444: 4390:herbal medicines 4370:FAO Plant Treaty 3910: 3887: 3872: 3852: 3845: 3838: 3829: 3671:Clean Power Plan 3603:Federal agencies 3245:Weeks–McLean Act 3099:Sackett v. EPA I 2749: 2667: 2660: 2653: 2644: 2633: 2624: 2607: 2600: 2591: 2584: 2577: 2567: 2558: 2551: 2544: 2537: 2530: 2521: 2514: 2507: 2500: 2480: 2473: 2466: 2459: 2452: 2445: 2438: 2429: 2422: 2415: 2406: 2399: 2392: 2385: 2378: 2371: 2364: 2357: 2350: 2341: 2334: 2327: 2305: 2298: 2291: 2284: 2277: 2270: 2263: 2256: 2249: 2242: 2233: 2226: 2217: 2210: 2203: 2194: 2187: 2180: 2173: 2164: 2157: 2150: 2143: 2134: 2127: 2120: 2113: 2106: 2099: 2092: 2085: 2083:Bank Secrecy Act 2063: 2056: 2049: 2042: 2035: 2028: 2019: 2012: 2005: 1998: 1991: 1984: 1977: 1970: 1963: 1956: 1949: 1942: 1933: 1926: 1919: 1910: 1903: 1896: 1889: 1882: 1864: 1857: 1848: 1841: 1834: 1827: 1820: 1813: 1806: 1799: 1790: 1783: 1776: 1767: 1760: 1751: 1744: 1741:Peace with Honor 1735: 1728: 1721: 1714: 1707: 1687: 1680: 1678:Executive Orders 1671: 1664: 1657: 1650: 1643: 1636: 1629: 1622: 1615: 1608: 1601: 1594: 1587: 1578: 1569: 1562: 1535: 1528: 1521: 1512: 1460: 1459: 1457: 1455: 1441: 1435: 1434: 1432: 1431: 1413: 1407: 1406: 1404: 1403: 1388: 1382: 1381: 1376:(6 March 2024). 1370: 1364: 1363: 1361: 1360: 1345: 1339: 1328: 1322: 1321: 1319: 1317: 1302: 1296: 1295: 1288: 1282: 1281: 1274: 1268: 1257: 1251: 1250: 1243: 1232: 1231: 1224: 1218: 1217: 1210: 1204: 1191: 1185: 1184: 1177: 1171: 1170: 1163: 1157: 1156: 1149: 1140: 1127: 1121: 1120: 1113: 1107: 1106: 1099: 1090: 1089: 1084:. Archived from 1078: 1072: 1071: 1069: 1068: 1059:. Archived from 1053: 1047: 1045: 1043: 1042: 1033:. Archived from 1027: 1021: 1018: 1012: 999: 993: 992: 990: 989: 974: 968: 967: 965: 964: 955:. Archived from 949: 940: 939: 937: 936: 922: 846:Federal Register 816: 803: 773: 749: 721:Nitrogen dioxide 715: 691: 657: 633: 599: 575: 551: 520: 486: 462: 410: 388: 71: 70: 67: 66: 63: 60: 57: 54: 21: 4987: 4986: 4982: 4981: 4980: 4978: 4977: 4976: 4927: 4926: 4925: 4920: 4898: 4863: 4843: 4829:Systems ecology 4795:Natural capital 4697: 4582: 4571:reclaimed water 4433: 4395:UPOV Convention 4243: 4038: 3947: 3921: 3917:Ozone depletion 3908: 3885: 3861: 3856: 3826: 3821: 3653: 3645: 3597: 3350:Clean Water Act 3194: 3193:and lower court 3192: 3190: 3185: 3175: 3145: 3019: 2957: 2927: 2905:Michigan v. EPA 2817: 2747: 2684: 2676: 2671: 2641: 2636: 2627: 2618: 2610: 2603: 2596: 2587: 2580: 2570: 2563: 2554: 2547: 2542:Watergate Seven 2540: 2533: 2526: 2517: 2510: 2503: 2496: 2483: 2476: 2469: 2462: 2455: 2448: 2441: 2434: 2425: 2418: 2411: 2402: 2395: 2388: 2381: 2374: 2367: 2362:Clean Water Act 2360: 2353: 2346: 2337: 2330: 2323: 2315: 2308: 2301: 2294: 2287: 2280: 2273: 2266: 2259: 2252: 2245: 2238: 2229: 2222: 2213: 2206: 2199: 2190: 2183: 2176: 2169: 2160: 2153: 2146: 2139: 2130: 2123: 2116: 2109: 2102: 2095: 2088: 2081: 2074:Economic policy 2068: 2059: 2052: 2045: 2038: 2031: 2024: 2017:Cannabis policy 2015: 2008: 2001: 1994: 1987: 1980: 1973: 1966: 1959: 1952: 1945: 1938: 1929: 1922: 1915: 1906: 1899: 1892: 1885: 1878: 1872:Domestic policy 1867: 1860: 1855:Operation CHAOS 1853: 1844: 1837: 1830: 1823: 1816: 1809: 1802: 1795: 1786: 1779: 1774:Tar Baby option 1772: 1763: 1758:Cold War period 1756: 1747: 1738: 1731: 1724: 1717: 1710: 1703: 1690: 1683: 1676: 1667: 1660: 1653: 1646: 1639: 1632: 1625: 1618: 1611: 1604: 1597: 1592:Silent majority 1590: 1583: 1572: 1565: 1558: 1545: 1539: 1509: 1469: 1464: 1463: 1453: 1451: 1443: 1442: 1438: 1429: 1427: 1415: 1414: 1410: 1401: 1399: 1390: 1389: 1385: 1372: 1371: 1367: 1358: 1356: 1347: 1346: 1342: 1329: 1325: 1315: 1313: 1304: 1303: 1299: 1290: 1289: 1285: 1276: 1275: 1271: 1262: 1258: 1254: 1245: 1244: 1235: 1226: 1225: 1221: 1212: 1211: 1207: 1202:Wayback Machine 1192: 1188: 1179: 1178: 1174: 1165: 1164: 1160: 1151: 1150: 1143: 1138:Wayback Machine 1128: 1124: 1115: 1114: 1110: 1101: 1100: 1093: 1080: 1079: 1075: 1066: 1064: 1055: 1054: 1050: 1040: 1038: 1029: 1028: 1024: 1019: 1015: 1010:Wayback Machine 1000: 996: 987: 985: 976: 975: 971: 962: 960: 951: 950: 943: 934: 932: 924: 923: 916: 911: 906: 862: 854: 830: 810: 796: 766: 742: 726: 708: 684: 668: 650: 626: 605:Carbon monoxide 592: 568: 544: 528: 513: 497: 479: 455: 439: 381: 378: 363: 352: 348: 343: 338: 334: 330: 326: 322: 314: 309:Nitrogen oxides 304: 300: 296: 291: 286: 282: 278: 274: 263: 258:Carbon monoxide 245: 234: 222: 213: 193: 151: 146:nitrogen oxides 143: 134:carbon monoxide 127: 123: 115: 51: 47: 28: 23: 22: 15: 12: 11: 5: 4985: 4983: 4975: 4974: 4969: 4964: 4959: 4954: 4949: 4944: 4939: 4929: 4928: 4922: 4921: 4919: 4918: 4907: 4904: 4903: 4900: 4899: 4897: 4896: 4887: 4882: 4877: 4872: 4867: 4864:(perpetuation) 4859: 4853: 4851: 4845: 4844: 4842: 4841: 4836: 4831: 4826: 4825: 4824: 4817:Nature reserve 4814: 4809: 4808: 4807: 4802: 4792: 4791: 4790: 4780: 4779: 4778: 4773: 4763: 4758: 4757: 4756: 4751: 4741: 4740: 4739: 4734: 4729: 4724: 4713: 4707: 4703: 4702: 4699: 4698: 4696: 4695: 4694: 4693: 4688: 4678: 4673: 4668: 4663: 4658: 4653: 4648: 4643: 4638: 4633: 4628: 4623: 4622: 4621: 4611: 4606: 4601: 4596: 4590: 4588: 4584: 4583: 4581: 4580: 4575: 4574: 4573: 4563: 4558: 4553: 4552: 4551: 4541: 4536: 4535: 4534: 4522: 4521: 4520: 4515: 4510: 4500: 4495: 4494: 4493: 4488: 4483: 4473: 4468: 4463: 4462: 4461: 4450: 4448: 4441: 4435: 4434: 4432: 4431: 4430: 4429: 4424: 4414: 4409: 4404: 4403: 4402: 4397: 4392: 4387: 4382: 4377: 4372: 4362: 4357: 4352: 4347: 4346: 4345: 4335: 4334: 4333: 4328: 4323: 4318: 4308: 4307: 4306: 4301: 4296: 4294:climate change 4286: 4281: 4276: 4271: 4270: 4269: 4262:Bioprospecting 4259: 4253: 4251: 4245: 4244: 4242: 4241: 4240: 4239: 4234: 4224: 4223: 4222: 4217: 4212: 4207: 4197: 4196: 4195: 4190: 4189: 4188: 4183: 4173: 4172: 4171: 4166: 4156: 4155: 4154: 4144: 4139: 4129: 4128: 4127: 4117: 4116: 4115: 4105: 4104: 4103: 4098: 4093: 4088: 4078: 4073: 4068: 4067: 4066: 4065: 4064: 4048: 4046: 4040: 4039: 4037: 4036: 4031: 4030: 4029: 4024: 4014: 4009: 4004: 3999: 3977: 3972: 3967: 3961: 3959: 3953: 3952: 3949: 3948: 3946: 3945: 3940: 3935: 3929: 3927: 3923: 3922: 3920: 3919: 3914: 3913: 3912: 3907:Clean Air Act 3899: 3894: 3889: 3880: 3878: 3869: 3863: 3862: 3857: 3855: 3854: 3847: 3840: 3832: 3823: 3822: 3820: 3819: 3814: 3809: 3804: 3801:Tailoring Rule 3798: 3791: 3786: 3781: 3776: 3771: 3766: 3764:PACE financing 3761: 3756: 3751: 3746: 3741: 3736: 3731: 3726: 3721: 3715: 3709: 3703: 3698: 3693: 3688: 3683: 3678: 3673: 3668: 3663: 3657: 3655: 3647: 3646: 3644: 3643: 3638: 3633: 3628: 3623: 3618: 3613: 3607: 3605: 3599: 3598: 3596: 3595: 3589: 3583: 3575: 3569: 3563: 3557: 3549: 3543: 3537: 3531: 3526: 3520: 3514: 3508: 3502: 3496: 3490: 3484: 3478: 3472: 3466: 3460: 3454: 3448: 3402: 3396: 3390: 3384: 3378: 3372: 3366: 3365: 3364: 3353: 3347: 3341: 3335: 3329: 3323: 3315: 3314: 3313: 3302: 3296: 3290: 3284: 3278: 3272: 3266: 3260: 3254: 3248: 3242: 3236: 3230: 3224: 3223: 3222: 3211: 3205: 3198: 3196: 3181: 3180: 3177: 3176: 3174: 3173: 3165: 3156: 3154: 3147: 3146: 3144: 3143: 3135: 3127: 3119: 3111: 3103: 3095: 3087: 3079: 3071: 3063: 3055: 3047: 3039: 3030: 3028: 3021: 3020: 3018: 3017: 3009: 3001: 2993: 2985: 2977: 2968: 2966: 2959: 2958: 2956: 2955: 2947: 2938: 2936: 2929: 2928: 2926: 2925: 2917: 2909: 2901: 2893: 2885: 2877: 2869: 2861: 2853: 2845: 2837: 2828: 2826: 2819: 2818: 2816: 2815: 2807: 2799: 2791: 2783: 2775: 2767: 2758: 2756: 2746: 2745: 2737: 2729: 2721: 2713: 2705: 2697: 2688: 2686: 2678: 2677: 2672: 2670: 2669: 2662: 2655: 2647: 2638: 2637: 2635: 2634: 2625: 2615: 2612: 2611: 2609: 2608: 2601: 2594: 2593: 2592: 2578: 2568: 2561: 2560: 2559: 2545: 2538: 2531: 2524: 2523: 2522: 2515: 2508: 2493: 2491: 2485: 2484: 2482: 2481: 2474: 2467: 2460: 2453: 2446: 2439: 2432: 2431: 2430: 2416: 2409: 2408: 2407: 2400: 2393: 2386: 2379: 2372: 2365: 2358: 2344: 2343: 2342: 2335: 2320: 2318: 2310: 2309: 2307: 2306: 2299: 2292: 2285: 2278: 2271: 2264: 2257: 2250: 2243: 2236: 2235: 2234: 2220: 2219: 2218: 2204: 2197: 2196: 2195: 2188: 2181: 2167: 2166: 2165: 2158: 2151: 2137: 2136: 2135: 2128: 2114: 2107: 2100: 2093: 2086: 2078: 2076: 2070: 2069: 2067: 2066: 2065: 2064: 2050: 2043: 2036: 2029: 2022: 2021: 2020: 2013: 1999: 1992: 1985: 1978: 1971: 1964: 1957: 1950: 1943: 1936: 1935: 1934: 1927: 1913: 1912: 1911: 1897: 1890: 1883: 1875: 1873: 1869: 1868: 1866: 1865: 1858: 1851: 1850: 1849: 1842: 1835: 1828: 1821: 1814: 1800: 1793: 1792: 1791: 1777: 1770: 1769: 1768: 1765:Linkage policy 1754: 1753: 1752: 1749:Vietnamization 1745: 1736: 1729: 1715: 1712:Nixon Doctrine 1708: 1700: 1698: 1696:Foreign policy 1692: 1691: 1689: 1688: 1681: 1674: 1673: 1672: 1665: 1651: 1644: 1637: 1630: 1623: 1616: 1609: 1602: 1595: 1588: 1581: 1580: 1579: 1563: 1555: 1553: 1547: 1546: 1540: 1538: 1537: 1530: 1523: 1515: 1493: 1492: 1491: 1486: 1483:EPA Green Book 1480: 1475: 1468: 1467:External links 1465: 1462: 1461: 1436: 1408: 1383: 1365: 1340: 1323: 1297: 1283: 1280:. 8 July 2014. 1269: 1260: 1252: 1233: 1219: 1216:. 8 July 2014. 1205: 1186: 1172: 1169:. 8 July 2014. 1158: 1141: 1122: 1108: 1091: 1088:on 2009-04-28. 1073: 1048: 1022: 1013: 994: 969: 941: 913: 912: 910: 907: 905: 904: 899: 894: 889: 884: 879: 874: 869: 863: 861: 858: 853: 850: 829: 826: 825: 824: 818: 805: 804: 794: 791: 788: 785: 782: 775: 774: 764: 761: 758: 755: 751: 750: 740: 737: 734: 731: 728: 724: 717: 716: 706: 703: 700: 697: 693: 692: 682: 679: 676: 673: 670: 666: 659: 658: 648: 645: 642: 639: 635: 634: 624: 621: 618: 611: 608: 601: 600: 590: 587: 584: 581: 577: 576: 566: 563: 560: 557: 553: 552: 542: 539: 536: 533: 530: 526: 522: 521: 511: 508: 505: 502: 499: 495: 488: 487: 477: 474: 471: 468: 464: 463: 453: 450: 447: 444: 441: 437: 434:Sulfur dioxide 430: 429: 426: 423: 422:Averaging Time 420: 417: 414: 377: 374: 373: 372: 371: 370: 361: 355: 354: 350: 346: 341: 336: 332: 328: 324: 320: 312: 306: 302: 298: 294: 289: 284: 280: 276: 272: 266: 261: 255: 249: 248: 247: 243: 240: 232: 224: 220: 212: 209: 192: 189: 162:transportation 149: 141: 125: 121: 113: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4984: 4973: 4970: 4968: 4965: 4963: 4960: 4958: 4955: 4953: 4950: 4948: 4945: 4943: 4940: 4938: 4935: 4934: 4932: 4917: 4909: 4908: 4905: 4895: 4894:Non-renewable 4891: 4888: 4886: 4883: 4881: 4878: 4876: 4873: 4871: 4868: 4866: 4860: 4858: 4855: 4854: 4852: 4850: 4846: 4840: 4837: 4835: 4834:Urban ecology 4832: 4830: 4827: 4823: 4820: 4819: 4818: 4815: 4813: 4810: 4806: 4803: 4801: 4798: 4797: 4796: 4793: 4789: 4786: 4785: 4784: 4781: 4777: 4774: 4772: 4769: 4768: 4767: 4764: 4762: 4759: 4755: 4752: 4750: 4747: 4746: 4745: 4742: 4738: 4735: 4733: 4730: 4728: 4725: 4723: 4720: 4719: 4718: 4715: 4714: 4711: 4708: 4704: 4692: 4689: 4687: 4684: 4683: 4682: 4679: 4677: 4674: 4672: 4669: 4667: 4666:Privatization 4664: 4662: 4659: 4657: 4654: 4652: 4649: 4647: 4644: 4642: 4639: 4637: 4634: 4632: 4629: 4627: 4624: 4620: 4617: 4616: 4615: 4612: 4610: 4607: 4605: 4602: 4600: 4597: 4595: 4592: 4591: 4589: 4585: 4579: 4576: 4572: 4569: 4568: 4567: 4564: 4562: 4561:Surface water 4559: 4557: 4554: 4550: 4547: 4546: 4545: 4542: 4540: 4537: 4533: 4532: 4528: 4527: 4526: 4523: 4519: 4516: 4514: 4511: 4509: 4506: 4505: 4504: 4501: 4499: 4496: 4492: 4489: 4487: 4484: 4482: 4479: 4478: 4477: 4474: 4472: 4469: 4467: 4464: 4460: 4457: 4456: 4455: 4452: 4451: 4449: 4445: 4442: 4440: 4436: 4428: 4425: 4423: 4420: 4419: 4418: 4415: 4413: 4410: 4408: 4405: 4401: 4398: 4396: 4393: 4391: 4388: 4386: 4383: 4381: 4378: 4376: 4373: 4371: 4368: 4367: 4366: 4363: 4361: 4358: 4356: 4353: 4351: 4348: 4344: 4341: 4340: 4339: 4336: 4332: 4329: 4327: 4324: 4322: 4319: 4317: 4314: 4313: 4312: 4309: 4305: 4302: 4300: 4297: 4295: 4292: 4291: 4290: 4287: 4285: 4282: 4280: 4277: 4275: 4272: 4268: 4265: 4264: 4263: 4260: 4258: 4255: 4254: 4252: 4250: 4246: 4238: 4235: 4233: 4230: 4229: 4228: 4225: 4221: 4218: 4216: 4213: 4211: 4208: 4206: 4203: 4202: 4201: 4198: 4194: 4191: 4187: 4184: 4182: 4179: 4178: 4177: 4174: 4170: 4167: 4165: 4162: 4161: 4160: 4157: 4153: 4150: 4149: 4148: 4145: 4143: 4140: 4138: 4135: 4134: 4133: 4130: 4126: 4123: 4122: 4121: 4118: 4114: 4111: 4110: 4109: 4106: 4102: 4099: 4097: 4094: 4092: 4089: 4087: 4084: 4083: 4082: 4079: 4077: 4074: 4072: 4069: 4063: 4062:peak farmland 4060: 4059: 4058: 4055: 4054: 4053: 4050: 4049: 4047: 4045: 4041: 4035: 4032: 4028: 4025: 4023: 4020: 4019: 4018: 4015: 4013: 4010: 4008: 4005: 4003: 4000: 3997: 3993: 3989: 3985: 3981: 3978: 3976: 3973: 3971: 3968: 3966: 3963: 3962: 3960: 3958: 3954: 3944: 3941: 3939: 3936: 3934: 3931: 3930: 3928: 3924: 3918: 3915: 3911: 3905: 3904: 3903: 3900: 3898: 3895: 3893: 3890: 3888: 3882: 3881: 3879: 3877: 3873: 3870: 3868: 3864: 3860: 3853: 3848: 3846: 3841: 3839: 3834: 3833: 3830: 3818: 3815: 3813: 3810: 3808: 3805: 3802: 3799: 3797: 3796: 3792: 3790: 3787: 3785: 3782: 3780: 3779:Right to know 3777: 3775: 3772: 3770: 3767: 3765: 3762: 3760: 3757: 3755: 3752: 3750: 3747: 3745: 3742: 3740: 3737: 3735: 3732: 3730: 3727: 3725: 3722: 3719: 3716: 3713: 3710: 3707: 3704: 3702: 3699: 3697: 3694: 3692: 3689: 3687: 3684: 3682: 3679: 3677: 3674: 3672: 3669: 3667: 3664: 3662: 3659: 3658: 3656: 3652: 3648: 3642: 3639: 3637: 3634: 3632: 3629: 3627: 3624: 3622: 3619: 3617: 3614: 3612: 3609: 3608: 3606: 3604: 3600: 3593: 3590: 3587: 3584: 3581: 3580: 3576: 3573: 3570: 3567: 3564: 3561: 3558: 3555: 3554: 3550: 3547: 3544: 3541: 3538: 3535: 3532: 3530: 3527: 3524: 3521: 3518: 3515: 3512: 3509: 3506: 3503: 3500: 3497: 3494: 3491: 3488: 3485: 3482: 3479: 3476: 3473: 3470: 3467: 3464: 3461: 3458: 3455: 3452: 3449: 3446: 3442: 3438: 3434: 3430: 3426: 3422: 3418: 3414: 3410: 3406: 3403: 3400: 3397: 3394: 3391: 3388: 3385: 3382: 3379: 3376: 3373: 3370: 3367: 3363: 3360: 3359: 3357: 3354: 3351: 3348: 3345: 3342: 3339: 3336: 3333: 3330: 3327: 3324: 3321: 3320: 3316: 3312: 3309: 3308: 3306: 3305:Clean Air Act 3303: 3300: 3297: 3294: 3291: 3288: 3285: 3282: 3279: 3276: 3273: 3270: 3267: 3264: 3261: 3258: 3255: 3252: 3249: 3246: 3243: 3240: 3237: 3234: 3231: 3228: 3225: 3221: 3218: 3217: 3215: 3212: 3209: 3206: 3203: 3200: 3199: 3197: 3188: 3182: 3171: 3170: 3166: 3163: 3162: 3158: 3157: 3155: 3152: 3148: 3141: 3140: 3136: 3133: 3132: 3128: 3125: 3124: 3120: 3117: 3116: 3112: 3109: 3108: 3104: 3101: 3100: 3096: 3093: 3092: 3088: 3085: 3084: 3080: 3077: 3076: 3072: 3069: 3068: 3064: 3061: 3060: 3056: 3053: 3052: 3048: 3045: 3044: 3040: 3037: 3036: 3032: 3031: 3029: 3026: 3022: 3015: 3014: 3010: 3007: 3006: 3002: 2999: 2998: 2994: 2991: 2990: 2986: 2983: 2982: 2978: 2975: 2974: 2970: 2969: 2967: 2964: 2960: 2953: 2952: 2948: 2945: 2944: 2940: 2939: 2937: 2934: 2930: 2923: 2922: 2918: 2915: 2914: 2910: 2907: 2906: 2902: 2899: 2898: 2894: 2891: 2890: 2886: 2883: 2882: 2878: 2875: 2874: 2870: 2867: 2866: 2862: 2859: 2858: 2854: 2851: 2850: 2846: 2843: 2842: 2838: 2835: 2834: 2830: 2829: 2827: 2824: 2820: 2813: 2812: 2808: 2805: 2804: 2800: 2797: 2796: 2792: 2789: 2788: 2784: 2781: 2780: 2776: 2773: 2772: 2768: 2765: 2764: 2760: 2759: 2757: 2754: 2750: 2743: 2742: 2738: 2735: 2734: 2730: 2727: 2726: 2722: 2719: 2718: 2714: 2711: 2710: 2706: 2703: 2702: 2698: 2695: 2694: 2690: 2689: 2687: 2683: 2682:Supreme Court 2679: 2675: 2668: 2663: 2661: 2656: 2654: 2649: 2648: 2645: 2632: 2631: 2626: 2623: 2622: 2617: 2616: 2613: 2606: 2602: 2599: 2595: 2590: 2586: 2585: 2583: 2579: 2575: 2574: 2569: 2566: 2562: 2557: 2553: 2552: 2550: 2546: 2543: 2539: 2536: 2532: 2529: 2525: 2520: 2516: 2513: 2509: 2506: 2502: 2501: 2499: 2495: 2494: 2492: 2490: 2486: 2479: 2475: 2472: 2468: 2465: 2461: 2458: 2454: 2451: 2447: 2444: 2440: 2437: 2433: 2428: 2424: 2423: 2421: 2417: 2414: 2410: 2405: 2401: 2398: 2394: 2391: 2387: 2384: 2380: 2377: 2373: 2370: 2366: 2363: 2359: 2356: 2352: 2351: 2349: 2345: 2340: 2336: 2333: 2329: 2328: 2326: 2322: 2321: 2319: 2317: 2314:Environmental 2311: 2304: 2300: 2297: 2293: 2290: 2286: 2283: 2279: 2276: 2272: 2269: 2265: 2262: 2258: 2255: 2251: 2248: 2244: 2241: 2237: 2232: 2228: 2227: 2225: 2221: 2216: 2212: 2211: 2209: 2205: 2202: 2198: 2193: 2189: 2186: 2182: 2179: 2175: 2174: 2172: 2168: 2163: 2159: 2156: 2152: 2149: 2145: 2144: 2142: 2138: 2133: 2129: 2126: 2122: 2121: 2119: 2115: 2112: 2108: 2105: 2101: 2098: 2094: 2091: 2087: 2084: 2080: 2079: 2077: 2075: 2071: 2062: 2058: 2057: 2055: 2051: 2048: 2044: 2041: 2037: 2034: 2030: 2027: 2023: 2018: 2014: 2011: 2007: 2006: 2004: 2000: 1997: 1993: 1990: 1986: 1983: 1979: 1976: 1972: 1969: 1965: 1962: 1958: 1955: 1951: 1948: 1944: 1941: 1937: 1932: 1928: 1925: 1921: 1920: 1918: 1914: 1909: 1905: 1904: 1902: 1898: 1895: 1891: 1888: 1884: 1881: 1877: 1876: 1874: 1870: 1863: 1859: 1856: 1852: 1847: 1843: 1840: 1836: 1833: 1829: 1826: 1825:SALT I Treaty 1822: 1819: 1815: 1812: 1808: 1807: 1805: 1801: 1798: 1794: 1789: 1785: 1784: 1782: 1778: 1775: 1771: 1766: 1762: 1761: 1759: 1755: 1750: 1746: 1742: 1737: 1734: 1730: 1727: 1723: 1722: 1720: 1716: 1713: 1709: 1706: 1702: 1701: 1699: 1697: 1693: 1686: 1682: 1679: 1675: 1670: 1669:controversies 1666: 1663: 1662:Supreme Court 1659: 1658: 1656: 1652: 1649: 1645: 1642: 1638: 1635: 1631: 1628: 1624: 1621: 1617: 1614: 1610: 1607: 1603: 1600: 1596: 1593: 1589: 1586: 1582: 1576: 1571: 1570: 1568: 1564: 1561: 1557: 1556: 1554: 1552: 1548: 1543: 1536: 1531: 1529: 1524: 1522: 1517: 1516: 1513: 1507: 1503: 1502: 1497: 1490: 1487: 1484: 1481: 1479: 1476: 1474: 1471: 1470: 1466: 1450: 1449:nepis.epa.gov 1446: 1440: 1437: 1426: 1425: 1419: 1412: 1409: 1397: 1393: 1387: 1384: 1379: 1375: 1369: 1366: 1355: 1351: 1344: 1341: 1337: 1333: 1327: 1324: 1312: 1308: 1301: 1298: 1293: 1287: 1284: 1279: 1273: 1270: 1266: 1256: 1253: 1248: 1242: 1240: 1238: 1234: 1229: 1223: 1220: 1215: 1209: 1206: 1203: 1199: 1195: 1190: 1187: 1182: 1176: 1173: 1168: 1162: 1159: 1154: 1148: 1146: 1142: 1139: 1135: 1131: 1126: 1123: 1118: 1112: 1109: 1104: 1098: 1096: 1092: 1087: 1083: 1077: 1074: 1063:on 2010-12-10 1062: 1058: 1052: 1049: 1037:on 2011-02-02 1036: 1032: 1026: 1023: 1017: 1014: 1011: 1007: 1003: 998: 995: 984: 980: 973: 970: 959:on 2017-10-20 958: 954: 948: 946: 942: 931: 927: 921: 919: 915: 908: 903: 900: 898: 895: 893: 890: 888: 885: 883: 880: 878: 875: 873: 870: 868: 867:Air pollution 865: 864: 859: 857: 851: 849: 847: 843: 839: 835: 827: 823: 819: 815: 814: 809: 808: 802: 799: 795: 792: 789: 786: 783: 780: 777: 776: 772: 769: 765: 762: 759: 756: 753: 752: 748: 745: 741: 738: 735: 732: 729: 722: 718: 714: 711: 707: 704: 701: 698: 695: 694: 690: 687: 683: 680: 677: 674: 671: 664: 660: 656: 653: 649: 646: 643: 640: 637: 636: 632: 629: 625: 622: 619: 616: 612: 609: 606: 602: 598: 595: 591: 588: 585: 582: 579: 578: 574: 571: 567: 564: 561: 558: 555: 554: 550: 547: 543: 540: 537: 534: 531: 523: 519: 516: 512: 509: 506: 503: 500: 493: 490: 489: 485: 482: 478: 475: 472: 469: 466: 465: 461: 458: 454: 451: 448: 445: 442: 435: 431: 427: 424: 421: 418: 415: 412: 411: 408: 406: 401: 399: 395: 390: 387: 384: 375: 367: 366:cap and trade 359: 358: 357: 356: 318: 317:nitrous oxide 310: 307: 270: 269:Sulfur oxides 267: 259: 256: 253: 250: 241: 238: 230: 229: 228: 225: 218: 215: 214: 210: 208: 204: 201: 198: 197:United States 190: 188: 186: 181: 179: 175: 171: 167: 163: 159: 155: 147: 139: 138:sulfur oxides 135: 131: 119: 111: 107: 103: 98: 96: 95:Clean Air Act 92: 88: 84: 80: 76: 75: 69: 46:, pronounced 45: 41: 32: 19: 4892: / 4766:Exploitation 4651:Conservation 4594:Desalination 4529: 4422:conservation 4257:Biodiversity 4205:conservation 4052:Agricultural 3980:Fossil fuels 3883: 3793: 3728: 3666:Citizen suit 3654:and concepts 3577: 3551: 3317: 3167: 3159: 3137: 3129: 3121: 3113: 3105: 3097: 3089: 3081: 3073: 3065: 3057: 3049: 3041: 3033: 3011: 3003: 2995: 2987: 2979: 2971: 2949: 2941: 2919: 2911: 2903: 2895: 2887: 2879: 2871: 2863: 2855: 2847: 2839: 2831: 2809: 2801: 2793: 2785: 2777: 2769: 2761: 2739: 2731: 2723: 2715: 2707: 2699: 2691: 2628: 2619: 2571: 2549:Enemies List 2375: 2003:War on drugs 1499: 1452:. Retrieved 1448: 1439: 1428:. Retrieved 1421: 1411: 1400:. Retrieved 1398:. 2016-12-29 1395: 1386: 1368: 1357:. Retrieved 1353: 1343: 1326: 1314:. Retrieved 1310: 1300: 1286: 1272: 1255: 1222: 1208: 1189: 1175: 1161: 1125: 1111: 1086:the original 1076: 1065:. Retrieved 1061:the original 1051: 1039:. Retrieved 1035:the original 1025: 1016: 997: 986:. Retrieved 982: 972: 961:. Retrieved 957:the original 933:. Retrieved 929: 855: 841: 837: 831: 811: 739:Annual mean 402: 391: 379: 211:Descriptions 205: 194: 182: 178:fossil fuels 105: 101: 99: 43: 39: 37: 4885:Nationalism 4857:Common-pool 4498:Hydrosphere 4491:remediation 4476:Groundwater 4071:Degradation 3651:Regulations 2598:Resignation 2118:Nixon shock 1719:Vietnam War 1648:Wilson desk 1544:(1969–1974) 1494:‹ The 1311:www.epa.gov 1004:des.nh.gov 798:40 CFR 768:40 CFR 744:40 CFR 710:40 CFR 686:40 CFR 652:40 CFR 628:40 CFR 613:35 ppm (40 594:40 CFR 570:40 CFR 546:40 CFR 515:40 CFR 481:40 CFR 457:40 CFR 383:40 CFR 237:micrometers 170:agriculture 81:that cause 4931:Categories 4880:Extraction 4839:Wilderness 4800:accounting 4783:Management 4749:ecological 4737:tragedy of 4656:Peak water 4641:Efficiency 4614:Sanitation 4556:Stormwater 4549:harvesting 4525:Irrigation 4427:management 4385:gene banks 4326:management 4304:management 4220:resilience 4186:phosphorus 4142:industrial 4120:Management 4096:soundscape 4002:Geothermal 3220:Refuse Act 1560:Transition 1430:2017-06-28 1402:2017-06-28 1359:2018-12-13 1336:Transcript 1067:2010-12-08 1041:2011-02-11 988:2018-01-18 963:2009-10-12 935:2018-03-29 909:References 787:0.15 μg/m 556:Secondary 467:Secondary 364:, using a 191:Background 174:combustion 104:(CAP), or 79:pollutants 4890:Renewable 4875:Depletion 4862:Conflict 4744:Economics 4722:enclosure 4681:Resources 4661:Pollution 4578:Watershed 4481:pollution 4412:Seed bank 4407:Rangeland 4289:Fisheries 4274:Biosphere 4267:biopiracy 4210:fertility 4086:cityscape 4081:Landscape 3988:peak coal 3975:Resources 3926:Emissions 3233:Weeks Act 3227:Lacey Act 3195:decisions 3191:treaties, 2685:decisions 2489:Watergate 1194:Factsheet 1002:Factsheet 504:150 μg/m 413:Pollutant 376:Standards 87:acid rain 38:The U.S. 4916:Category 4849:Resource 4788:adaptive 4686:improved 4646:Conflict 4631:Security 4626:Scarcity 4619:improved 4609:Leaching 4486:recharge 4466:Drinking 4417:Wildlife 4284:Bushmeat 4279:Bushfood 4232:planning 4137:gemstone 4132:Minerals 4113:property 4101:viewshed 4091:seascape 4022:sunlight 3996:peak oil 3992:peak gas 3718:LDV Rule 2498:Timeline 1931:Title IX 1551:Timeline 1496:template 1354:The Hill 1198:Archived 1196:epa.gov 1134:Archived 1006:Archived 860:See also 832:The EPA 820:Source: 754:Primary 638:Primary 610:Primary 586:24-hour 583:35 μg/m 559:15 μg/m 532:Primary 507:24-hour 443:Primary 419:Standard 154:industry 100:The six 4717:Commons 4706:Related 4671:Quality 4587:Aspects 4513:glacial 4454:Aquifer 4360:Pasture 4311:Forests 4237:reserve 4012:Nuclear 3982: ( 3938:Trading 3933:Airshed 3358:(1972) 3216:(1899) 1804:Détente 1498:below ( 1454:29 July 1316:29 July 760:1-hour 736:annual 702:8-hour 678:1-hour 644:8-hour 620:1-hour 562:annual 538:annual 473:3-hour 449:1-hour 446:75 ppb 369:states. 144:), and 4727:global 4691:policy 4636:Supply 4599:Floods 4566:Sewage 4539:Marine 4531:huerta 4365:Plants 4355:Meadow 4215:health 4193:rights 4181:copper 4159:mining 4057:arable 3957:Energy 3897:Indoor 3803:(2010) 3720:(2010) 3714:(2022) 3708:(2007) 3594:(2022) 3588:(2022) 3574:(2021) 3568:(2018) 3562:(2016) 3548:(2007) 3542:(2005) 3536:(1996) 3525:(1990) 3519:(1990) 3513:(1990) 3507:(1986) 3501:(1986) 3495:(1980) 3489:(1978) 3483:(1977) 3477:(1976) 3471:(1976) 3465:(1976) 3459:(1975) 3453:(1975) 3395:(1973) 3389:(1973) 3383:(1972) 3377:(1972) 3371:(1972) 3346:(1970) 3340:(1970) 3334:(1969) 3328:(1965) 3301:(1961) 3295:(1956) 3289:(1955) 3283:(1954) 3277:(1934) 3271:(1928) 3265:(1924) 3259:(1924) 3253:(1918) 3247:(1913) 3241:(1911) 3235:(1911) 3229:(1900) 3210:(1897) 3204:(1872) 3172:(2021) 3164:(1998) 3151:CERCLA 3142:(2023) 3134:(2020) 3126:(2018) 3118:(2016) 3110:(2013) 3102:(2012) 3094:(2009) 3086:(2009) 3078:(2007) 3070:(2006) 3062:(2006) 3054:(2004) 3046:(2001) 3038:(1985) 3016:(2021) 3008:(2018) 3000:(2007) 2992:(1995) 2984:(1992) 2976:(1978) 2954:(2012) 2946:(1978) 2924:(2022) 2916:(2021) 2908:(2015) 2900:(2014) 2892:(2011) 2884:(2007) 2876:(2007) 2868:(2004) 2860:(2004) 2852:(2001) 2844:(1984) 2836:(1975) 2814:(2010) 2806:(2008) 2798:(2004) 2790:(2004) 2782:(1983) 2774:(1983) 2766:(1973) 2744:(2021) 2736:(2000) 2728:(1990) 2720:(1979) 2712:(1978) 2704:(1972) 2696:(1920) 2605:Pardon 2576:(1974) 2316:policy 1046:US EPA 983:US EPA 877:Asthma 158:mining 136:(CO), 132:(Pb), 4870:Curse 4676:Right 4518:polar 4508:bergs 4471:Fresh 4439:Water 4152:metal 4076:Field 4027:shade 4017:Solar 4007:Hydro 3892:Index 3184:Major 3153:cases 3027:cases 2965:cases 2935:cases 2825:cases 2755:cases 1422:U.S. 1332:Video 822:USEPA 801:50.12 781:(Pb) 771:50.11 747:50.11 713:50.19 663:Ozone 607:(CO) 597:50.18 549:50.18 460:50.17 275:): SO 110:ozone 44:NAAQS 4967:Smog 4805:good 4754:land 4732:land 4544:Rain 4400:wood 4375:food 4338:Game 4249:Life 4200:Soil 4176:peak 4169:sand 4044:Land 4034:Wind 3909:(US) 3886:(US) 3445:2007 3441:2000 3437:1999 3433:1996 3429:1992 3425:1990 3421:1988 3417:1986 3413:1976 3409:1974 2933:RCRA 2753:NEPA 1456:2023 1318:2023 779:Lead 689:50.9 655:50.8 631:50.8 617:/m) 573:50.7 518:50.6 484:50.5 416:Type 252:Lead 183:The 168:and 130:lead 83:smog 74:naks 4604:Law 4503:Ice 4343:law 4321:law 4299:law 4227:Use 4164:law 4147:ore 4108:Law 3984:gas 3970:Law 3965:Bio 3902:Law 3867:Air 3025:CWA 2963:ESA 2823:CAA 2528:CRP 723:(NO 527:2.5 494:(PM 436:(SO 400:." 311:(NO 271:(SO 244:2.5 176:of 148:(NO 140:(SO 128:), 124:/PM 122:2.5 120:(PM 116:), 4933:: 3994:, 3990:, 3986:, 3443:, 3439:, 3435:, 3431:, 3427:, 3423:, 3419:, 3415:, 3411:, 1447:. 1420:. 1394:. 1352:. 1334:, 1309:. 1236:^ 1144:^ 1132:. 1094:^ 981:. 944:^ 928:. 917:^ 813:^a 727:) 669:) 665:(O 615:mg 529:) 498:) 496:10 440:) 407:. 386:50 340:NO 319:(N 242:PM 233:10 231:PM 219:(O 164:, 160:, 156:, 126:10 112:(O 85:, 3998:) 3851:e 3844:t 3837:v 3407:( 3189:, 2666:e 2659:t 2652:v 1743:" 1739:" 1577:" 1573:" 1534:e 1527:t 1520:v 1458:. 1433:. 1405:. 1380:. 1362:. 1320:. 1294:. 1267:. 1261:2 1249:. 1230:. 1183:. 1155:. 1119:. 1105:. 1070:. 1044:. 991:. 966:. 938:. 725:2 667:3 438:2 362:x 351:2 347:x 342:2 337:2 333:x 329:2 325:2 321:2 313:x 305:. 303:2 299:2 295:2 290:2 285:x 281:2 277:x 273:x 262:2 221:3 150:x 142:x 114:3 68:/ 65:s 62:k 59:æ 56:n 53:ˈ 50:/ 42:( 20:)

Index

Criteria air contaminants

/ˈnæks/
naks
pollutants
smog
acid rain
United States Environmental Protection Agency
Clean Air Act
ozone
atmospheric particulate matter
lead
carbon monoxide
sulfur oxides
nitrogen oxides
industry
mining
transportation
electricity generation
agriculture
combustion
fossil fuels
National Emissions Standards for Hazardous Air Pollutants
United States
Environmental Protection Agency
Ground level ozone
Atmospheric particulate matter
micrometers
Lead
Carbon monoxide

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