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Environmental Protection Agency William Ruckelshaus has announced final publication of national air quality standards for six common classes of pollutants — sulfur oxides, particulate matter, carbon monoxide, photochemical oxidants, nitrogen oxides and hydrocarbons. Download entire issue to view this article: http://country-survey-collabs.info/issues/3.9/download-entire-issue%3C/a%3E

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National air quality standards announced

by hcn, High Country News
May 14, 1971

					<h1>National air quality standards announced</h1>
<p class="byline">by hcn, High Country News <br />May 14, 1971</p>
					
<p>Environmental Protection Agency William Ruckelshaus has announced final publication of national air quality standards for six common classes of pollutants — sulfur oxides, particulate matter, carbon monoxide, photochemical oxidants, nitrogen oxides and hydrocarbons. Download entire issue to view this article: <a class="external-link" href="http://country-survey-collabs.info/issues/3.9/download-entire-issue">http://country-survey-collabs.info/issues/3.9/download-entire-issue%3C/a%3E%3C/p%3E

					<p>This &lt;a target=&quot;_blank&quot; href=&quot;https://country-survey-collabs.info/issues/3-9/national-air-quality-standards-announced/&quot;&gt;article&lt;/a&gt; first appeared on &lt;a target=&quot;_blank&quot; href=&quot;https://country-survey-collabs.info Country News&lt;/a&gt; and is republished here under a &lt;a target=&quot;_blank&quot; href=&quot;https://creativecommons.org/licenses/by-nc-nd/4.0/&quot;&gt;Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License&lt;/a&gt;.&lt;img src=&quot;https://i0.wp.com/www.hcn.org/wp-content/uploads/2023/05/cropped-HCN_Logo-Monogram_White_Sq-2.png?resize=150%2C150&amp;amp;quality=100&amp;amp;ssl=1&quot; style=&quot;width:1em;height:1em;margin-left:10px;&quot;&gt;&lt;img id=&quot;republication-tracker-tool-source&quot; src=&quot;https://country-survey-collabs.info/?republication-pixel=true&amp;post=111233&amp;amp;ga4=G-0NS3WVPPTN&quot; style=&quot;width:1px;height:1px;&quot;&gt;&lt;script&gt; PARSELY = { autotrack: false, onload: function() { PARSELY.beacon.trackPageView({ url: &quot;https://country-survey-collabs.info/issues/3-9/national-air-quality-standards-announced/&quot;, urlref: window.location.href }); } } &lt;/script&gt; &lt;script id=&quot;parsely-cfg&quot; src=&quot;//cdn.parsely.com/keys/hcn.org/p.js&quot;&gt;&lt;/script&gt;</p>

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