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      <marc:subfield code="a">Guidance for cleaner air spaces during wildfire smoke events.</marc:subfield>
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      <marc:subfield code="a">Ottawa, ON : </marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Lignes directrices relatives aux espaces antifumée pendant les épisodes de fumée de feux de forêt.</marc:subfield>
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      <marc:subfield code="a">"Publication date: September 2020."</marc:subfield>
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      <marc:subfield code="a">"Pub.: 200175."</marc:subfield>
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      <marc:subfield code="a">Issued also in HTML format.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 15-17).</marc:subfield>
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      <marc:subfield code="a">"This document, which includes detailed guidance and a simplified checklist, provides advice to local jurisdictions that are creating and/or managing community-based cleaner air spaces for wildfire smoke events. It will focus on wildfire smoke, keeping in mind that smoke can also arise from prescribed burns or local fires and may include the combustion products of both natural and manufactured materials. Specific pollutants of concern and their associated health risks will be discussed. To reduce exposure and associated health impacts from these pollutants, infrastructure considerations will be presented and recommendations provided to help maintain clean air within a designated building. Recommendations applying to home environments are also included in the event that people remain at home during a smoke event. Finally, a simplified checklist is included in the appendix, which summarizes the guidance and can be used as a stand-alone tool"--Executive summary, page 1.</marc:subfield>
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      <marc:subfield code="t">Lignes directrices relatives aux espaces antifumée pendant les épisodes de fumée de feux de forêt.</marc:subfield>
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