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USA: continuing battles over “acceptable” air quality standards

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May 20020329
Jun 20020259
Jul 2002090
Aug 20020140
Sep 2002075
Oct 20020103
Nov 2002050
Dec 2002052
Jan 2003050
Feb 2003080
Apr 2003040
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Jul 20030220
Aug 20030180
Sep 20030232
Oct 20030150
Nov 20030252
Dec 20030154
Jan 20040141
Feb 20040120
Mar 20041231
Apr 20040122
May 20040390
Jun 20040380
Jul 20040560
Aug 20040571
Sep 20040661
Oct 200416143
Nov 2004753
Dec 20041370
Jan 2005587
Feb 20051670
Mar 200512161
Apr 20058122
May 20054120
Jun 2005351
Jul 2005353
Aug 20057176
Sep 20059122
Oct 20058202
Nov 20058103
Dec 20055123
Jan 20066145
Feb 20064154
Mar 20067114
Apr 2006354
May 20066132
Jun 2006631
Jul 2006340
Aug 2006391
Sep 2006410
Oct 2006292
Nov 2006372
Dec 2006141
Jan 2007451
Feb 2007230
Mar 20077101
Apr 2007730
May 2007432
Jun 2007540
Jul 2007110
Aug 2007331
Sep 2007411
Oct 20071051
Nov 2007332
Dec 2007311
Jan 2008732
Feb 2008600
Mar 2008320
Apr 20081030
May 2008300
Jun 20081012
Jul 20081310
Aug 2008810
Sep 2008510
Oct 2008910
Nov 2008710
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Jan 2009201
Feb 2009400
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Dec 2009200
Jan 2010001
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Mar 2012340
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Dec 20120176
Jan 20130152
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Mar 20130216
Apr 20130229
May 20130132
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Jul 2013820
Aug 2013831
Sep 2013410
Oct 2013740
Nov 2013460
Dec 2013600
Jan 20141270
Feb 2014200
Mar 2014850
Apr 2014440
May 2014341
Jun 2014320
Jul 2014620
Aug 2014230
Sep 2014780
Oct 2014031
Nov 2014450
Dec 2014030
Jan 2015281
Feb 2015970
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Apr 2015761
May 201511100
Jun 2015571
Jul 2015213
Aug 2015870
Sep 2015610
Oct 2015001
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Dec 2015760
Jan 2016573
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Mar 20162084
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Jun 2016020
Jul 20161320
Aug 2016420
Sep 2016812
Oct 2016324
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Jan 20171178
Feb 2017213
Mar 20170142
Apr 20170273
May 20171105
Jun 20176234
Jul 201726264
Aug 201713134
Sep 2017443
Oct 201711113
Nov 201716101
Dec 201715152
Jan 201825251
Feb 201830204
Mar 201829284
Apr 201827273
May 201830303
Jun 201833344
Jul 201819194
Aug 201815154
Sep 2018553
Total10101595300