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	<id>https://energyeducation.ca/wiki/index.php?action=history&amp;feed=atom&amp;title=Oil_sands_tailings_ponds</id>
	<title>Oil sands tailings ponds - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://energyeducation.ca/wiki/index.php?action=history&amp;feed=atom&amp;title=Oil_sands_tailings_ponds"/>
	<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;action=history"/>
	<updated>2026-09-02T06:02:11Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.44.0</generator>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=9150&amp;oldid=prev</id>
		<title>Jmdonev: 1 revision imported</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=9150&amp;oldid=prev"/>
		<updated>2020-01-31T05:10:05Z</updated>

		<summary type="html">&lt;p&gt;1 revision imported&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 05:10, 31 January 2020&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=9149&amp;oldid=prev</id>
		<title>Energy&gt;Jmdonev at 21:42, 19 January 2020</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=9149&amp;oldid=prev"/>
		<updated>2020-01-19T21:42:33Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 21:42, 19 January 2020&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2018&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;12&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;10]]&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2020&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;01&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;31&lt;/ins&gt;]]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category: Rudi grade Ashley edit&lt;/del&gt;]]  &lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:640px-Syncrude_mildred_lake_plant.jpg|400px|framed|right|Figure 1. Oil sands tailings pond in Fort McMurray, Alberta.&amp;lt;ref&amp;gt;Wikimedia Commons. (June 9, 2015). &amp;#039;&amp;#039;Syncrude&amp;#039;s Mildred Lake site, plant and tailings ponds&amp;#039;&amp;#039; [Online]. Available: http://en.wikipedia.org/wiki/Oil_sands#/media/File:Syncrude_mildred_lake_plant.jpg&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:640px-Syncrude_mildred_lake_plant.jpg|400px|framed|right|Figure 1. Oil sands tailings pond in Fort McMurray, Alberta.&amp;lt;ref&amp;gt;Wikimedia Commons. (June 9, 2015). &amp;#039;&amp;#039;Syncrude&amp;#039;s Mildred Lake site, plant and tailings ponds&amp;#039;&amp;#039; [Online]. Available: http://en.wikipedia.org/wiki/Oil_sands#/media/File:Syncrude_mildred_lake_plant.jpg&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;The &#039;&#039;&#039;Oil sands tailings ponds&#039;&#039;&#039; are settling ponds that contain the [[pollution vs waste|waste]] byproduct of [[oil sands]] [[extraction]] and upgrading. They are a mix of [[water]], sand, silt, clay, unrecovered [[hydrocarbon]]s, and other contaminants.&amp;lt;/onlyinclude&amp;gt;&amp;lt;ref name=alb&amp;gt;Canada&#039;s Oil Sands. (Accessed Oct.20, 2018). &#039;&#039;Tailings Ponds&#039;&#039; [Online]. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Available&lt;/del&gt;: &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;https://www.&lt;/del&gt;canadasoilsands.ca/en/explore-topics/tailings-ponds&amp;lt;/ref&amp;gt; The management of [[tailings pond]]s is one of the most difficult [[environment]]al challenges associated with oil sands and their existence is extremely controversial.&amp;lt;ref name=&quot;RE2&quot;/&amp;gt; Currently, tailings ponds occupy a fair amount of space in Alberta—covering around 77 square [[meter|kilometers]]. Including all tailings ponds structures along with the ponds themselves, the total covered area is 220 square kilometers—an area about 1.5 times larger than the city of Vancouver (about 176 square kilometers as of 2010).&amp;lt;ref name=tailings&amp;gt;Alberta Environment &amp;amp; Water. (June 19, 2015). &#039;&#039;Oil Sands Information Portal: Tailings Ponds – Tailings Ponds Surface Area&#039;&#039; [Online]. Available: http://osip.alberta.ca/library/Dataset/Details/542&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;The &#039;&#039;&#039;Oil sands tailings ponds&#039;&#039;&#039; are settling ponds that contain the [[pollution vs waste|waste]] byproduct of [[oil sands]] [[extraction]] and upgrading. They are a mix of [[water]], sand, silt, clay, unrecovered [[hydrocarbon]]s, and other contaminants.&amp;lt;/onlyinclude&amp;gt;&amp;lt;ref name=alb&amp;gt;Canada&#039;s Oil Sands. (Accessed Oct. 20, 2018). &#039;&#039;Tailings Ponds&#039;&#039; [Online]. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;This was available at&lt;/ins&gt;: canadasoilsands.ca/en/explore-topics/tailings-ponds &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;but that resource has now been combined with an oil lobbying group, the Canadian Association of Petroleum Producers.&lt;/ins&gt;&amp;lt;/ref&amp;gt; The management of [[tailings pond]]s is one of the most difficult [[environment]]al challenges associated with oil sands and their existence is extremely controversial.&amp;lt;ref name=&quot;RE2&quot;/&amp;gt; Currently, tailings ponds occupy a fair amount of space in Alberta—covering around 77 square [[meter|kilometers]]. Including all tailings ponds structures along with the ponds themselves, the total covered area is 220 square kilometers—an area about 1.5 times larger than the city of Vancouver (about 176 square kilometers as of 2010).&amp;lt;ref name=tailings&amp;gt;Alberta Environment &amp;amp; Water. (June 19, 2015). &#039;&#039;Oil Sands Information Portal: Tailings Ponds – Tailings Ponds Surface Area&#039;&#039; [Online]. Available: http://osip.alberta.ca/library/Dataset/Details/542&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are several environmental concerns that are associated with the existence of tailings ponds. The main problem with the ponds is that they include toxic and harmful [[chemical]]s such as [[ammonia]], [[mercury]], and naphthenic [[acid]]s. The water containing these chemicals is toxic to animals, particularly aquatic organisms.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; If aquatic organisms enter these ponds, significant levels of damage can occur. In addition, these ponds are not sealed tightly. Instead, the water and contaminants from the pond seep into the soil surrounding it, potentially contaminating [[groundwater]] and harming wildlife surrounding the pond. As well, these ponds exist almost indefinitely, with over 830 million cubic [[meter]]s requiring long term containment.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; This poses a risk to wildlife, mainly birds, who can be harmed if they come into contact with the [[water]] in these ponds.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are several environmental concerns that are associated with the existence of tailings ponds. The main problem with the ponds is that they include toxic and harmful [[chemical]]s such as [[ammonia]], [[mercury]], and naphthenic [[acid]]s. The water containing these chemicals is toxic to animals, particularly aquatic organisms.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; If aquatic organisms enter these ponds, significant levels of damage can occur. In addition, these ponds are not sealed tightly. Instead, the water and contaminants from the pond seep into the soil surrounding it, potentially contaminating [[groundwater]] and harming wildlife surrounding the pond. As well, these ponds exist almost indefinitely, with over 830 million cubic [[meter]]s requiring long term containment.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; This poses a risk to wildlife, mainly birds, who can be harmed if they come into contact with the [[water]] in these ponds.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Energy&gt;Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=8476&amp;oldid=prev</id>
		<title>Jmdonev: 1 revision imported</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=8476&amp;oldid=prev"/>
		<updated>2019-01-04T18:14:56Z</updated>

		<summary type="html">&lt;p&gt;1 revision imported&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:14, 4 January 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=8475&amp;oldid=prev</id>
		<title>2dev&gt;Jmdonev at 21:13, 27 October 2018</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=8475&amp;oldid=prev"/>
		<updated>2018-10-27T21:13:58Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 21:13, 27 October 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done 2018-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;08&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;03&lt;/del&gt;]]  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done 2018-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;12&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;10]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category: Rudi grade Ashley edit&lt;/ins&gt;]]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:640px-Syncrude_mildred_lake_plant.jpg|400px|framed|right|Figure 1. Oil sands tailings pond in Fort McMurray, Alberta.&amp;lt;ref&amp;gt;Wikimedia Commons. (June 9, 2015). &amp;#039;&amp;#039;Syncrude&amp;#039;s Mildred Lake site, plant and tailings ponds&amp;#039;&amp;#039; [Online]. Available: http://en.wikipedia.org/wiki/Oil_sands#/media/File:Syncrude_mildred_lake_plant.jpg&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:640px-Syncrude_mildred_lake_plant.jpg|400px|framed|right|Figure 1. Oil sands tailings pond in Fort McMurray, Alberta.&amp;lt;ref&amp;gt;Wikimedia Commons. (June 9, 2015). &amp;#039;&amp;#039;Syncrude&amp;#039;s Mildred Lake site, plant and tailings ponds&amp;#039;&amp;#039; [Online]. Available: http://en.wikipedia.org/wiki/Oil_sands#/media/File:Syncrude_mildred_lake_plant.jpg&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;&#039;&#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Tailings &lt;/del&gt;ponds&#039;&#039;&#039; are settling ponds that contain the [[pollution vs waste|waste]] byproduct of [[oil sands]] [[extraction]] and upgrading. They are a mix of [[water]], sand, silt, clay, unrecovered [[hydrocarbon]]s, and other contaminants.&amp;lt;/onlyinclude&amp;gt;&amp;lt;ref name=alb&amp;gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Alberta Energy&lt;/del&gt;. (&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;June 19&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2015&lt;/del&gt;). &#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Reclamation&lt;/del&gt;&#039;&#039; [Online]. Available: &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;http&lt;/del&gt;://www.&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;energy.gov.ab&lt;/del&gt;.ca/&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;OilSands&lt;/del&gt;/&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;1722.asp&lt;/del&gt;&amp;lt;/ref&amp;gt; The management of tailings &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ponds &lt;/del&gt;is one of the most difficult [[environment]]al challenges associated with oil sands and their existence is extremely controversial. Currently, tailings ponds occupy a fair amount of space in Alberta—covering around 77 square [[meter|kilometers]].&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;RE1&quot;&amp;gt;Alberta Government. (July 27, 2015). &#039;&#039;Tailings Ponds&#039;&#039; [Online]. Available: http://oilsands.alberta.ca/tailings.html&amp;lt;/ref&amp;gt; &lt;/del&gt;Including all tailings ponds structures along with the ponds themselves, the total covered area is 220 square kilometers—an area about 1.5 times larger than the city of Vancouver (about 176 square kilometers as of 2010).&amp;lt;ref name=tailings&amp;gt;Alberta Environment &amp;amp; Water. (June 19, 2015). &#039;&#039;Oil Sands Information Portal: Tailings Ponds – Tailings Ponds Surface Area&#039;&#039; [Online]. Available: http://osip.alberta.ca/library/Dataset/Details/542&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;The &lt;/ins&gt;&#039;&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Oil sands tailings &lt;/ins&gt;ponds&#039;&#039;&#039; are settling ponds that contain the [[pollution vs waste|waste]] byproduct of [[oil sands]] [[extraction]] and upgrading. They are a mix of [[water]], sand, silt, clay, unrecovered [[hydrocarbon]]s, and other contaminants.&amp;lt;/onlyinclude&amp;gt;&amp;lt;ref name=alb&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Canada&#039;s Oil Sands&lt;/ins&gt;. (&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Accessed Oct.20&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2018&lt;/ins&gt;). &#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Tailings Ponds&lt;/ins&gt;&#039;&#039; [Online]. Available: &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;https&lt;/ins&gt;://www.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;canadasoilsands&lt;/ins&gt;.ca/&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;en/explore-topics&lt;/ins&gt;/&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;tailings-ponds&lt;/ins&gt;&amp;lt;/ref&amp;gt; The management of &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;tailings &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;pond]]s &lt;/ins&gt;is one of the most difficult [[environment]]al challenges associated with oil sands and their existence is extremely controversial.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;RE2&quot;/&amp;gt; &lt;/ins&gt;Currently, tailings ponds occupy a fair amount of space in Alberta—covering around 77 square [[meter|kilometers]]. Including all tailings ponds structures along with the ponds themselves, the total covered area is 220 square kilometers—an area about 1.5 times larger than the city of Vancouver (about 176 square kilometers as of 2010).&amp;lt;ref name=tailings&amp;gt;Alberta Environment &amp;amp; Water. (June 19, 2015). &#039;&#039;Oil Sands Information Portal: Tailings Ponds – Tailings Ponds Surface Area&#039;&#039; [Online]. Available: http://osip.alberta.ca/library/Dataset/Details/542&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are several environmental concerns that are associated with the existence of tailings ponds. The main problem with the ponds is that they include toxic and harmful [[chemical]]s such as [[ammonia]], [[mercury]], and naphthenic [[acid]]s. The water containing these chemicals is toxic to animals, particularly aquatic organisms.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; If aquatic organisms enter these ponds, significant levels of damage can occur. In addition, these ponds are not sealed tightly. Instead, the water and contaminants from the pond seep into the soil surrounding it, potentially contaminating [[groundwater]] and harming wildlife surrounding the pond. As well, these ponds exist almost indefinitely, with over 830 million cubic [[meter]]s requiring long term containment.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; This poses a risk to wildlife, mainly birds, who can be harmed if they come into contact with the [[water]] in these ponds.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are several environmental concerns that are associated with the existence of tailings ponds. The main problem with the ponds is that they include toxic and harmful [[chemical]]s such as [[ammonia]], [[mercury]], and naphthenic [[acid]]s. The water containing these chemicals is toxic to animals, particularly aquatic organisms.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; If aquatic organisms enter these ponds, significant levels of damage can occur. In addition, these ponds are not sealed tightly. Instead, the water and contaminants from the pond seep into the soil surrounding it, potentially contaminating [[groundwater]] and harming wildlife surrounding the pond. As well, these ponds exist almost indefinitely, with over 830 million cubic [[meter]]s requiring long term containment.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; This poses a risk to wildlife, mainly birds, who can be harmed if they come into contact with the [[water]] in these ponds.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Another concern about the use of tailings ponds is the volume of oil sands tailings produced from [[bitumen]] extraction. For every barrel of bitumen extracted from the oil sands, 1.5 barrels of tailings waste is produced.&amp;lt;ref name=&quot;RE2&quot;&amp;gt;Pembina Institute. (June 19, 2015). &#039;&#039;Tailings Ponds&#039;&#039; [Online]. Available: http://www.pembina.org/oil-sands&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;/os101&lt;/del&gt;/tailings&amp;lt;/ref&amp;gt; This large volume of tailings requires a large area for storage, and the sheer size of tailings ponds can be an issue, as they encroach on wildlife territory.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Another concern about the use of tailings ponds is the volume of oil sands tailings produced from [[bitumen]] extraction. For every barrel of bitumen extracted from the oil sands, 1.5 barrels of tailings waste is produced.&amp;lt;ref name=&quot;RE2&quot;&amp;gt;Pembina Institute. (June 19, 2015). &#039;&#039;Tailings Ponds&#039;&#039; [Online]. Available: http://www.pembina.org/oil-sands/tailings&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;-ponds&lt;/ins&gt;&amp;lt;/ref&amp;gt; This large volume of tailings requires a large area for storage, and the sheer size of tailings ponds can be an issue, as they encroach on wildlife territory.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Efforts are being made to reduce the impact that tailings ponds have on the environment. First, bird deterrence systems have been created and used to prevent birds from landing on the ponds. These [[air]] cannons are used to frighten away the birds if they get too close. Targets have also been set for companies to reduce tailings and provide specific dates for when the ponds will be closed and reclaimed.&amp;lt;ref name=&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&quot;RE1&quot;&lt;/del&gt;/&amp;gt; In addition, timelines are being created that requires that fluid tailings be processed as quickly as they are being created, preventing tailings growth.&amp;lt;ref name=&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&quot;RE1&quot;&lt;/del&gt;/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Efforts are being made to reduce the impact that tailings ponds have on the environment. First, bird deterrence systems have been created and used to prevent birds from landing on the ponds. These [[air]] cannons are used to frighten away the birds if they get too close. Targets have also been set for companies to reduce tailings and provide specific dates for when the ponds will be closed and reclaimed.&amp;lt;ref name=&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;alb&lt;/ins&gt;/&amp;gt; In addition, timelines are being created that requires that fluid tailings be processed as quickly as they are being created, preventing tailings growth.&amp;lt;ref name=&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;alb&lt;/ins&gt;/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Interactive Map==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Interactive Map==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>2dev&gt;Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=7946&amp;oldid=prev</id>
		<title>Jmdonev: 1 revision imported</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=7946&amp;oldid=prev"/>
		<updated>2018-09-03T22:23:31Z</updated>

		<summary type="html">&lt;p&gt;1 revision imported&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 22:23, 3 September 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=7945&amp;oldid=prev</id>
		<title>energy&gt;Jmdonev at 21:31, 25 July 2018</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=7945&amp;oldid=prev"/>
		<updated>2018-07-25T21:31:15Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 21:31, 25 July 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2015&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;07&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;24&lt;/del&gt;]]  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2018&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;08&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;03&lt;/ins&gt;]]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:640px-Syncrude_mildred_lake_plant.jpg|400px|framed|right|Figure 1. Oil sands tailings pond in Fort McMurray, Alberta.&amp;lt;ref&amp;gt;Wikimedia Commons. (June 9, 2015). &amp;#039;&amp;#039;Syncrude&amp;#039;s Mildred Lake site, plant and tailings ponds&amp;#039;&amp;#039; [Online]. Available: http://en.wikipedia.org/wiki/Oil_sands#/media/File:Syncrude_mildred_lake_plant.jpg&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:640px-Syncrude_mildred_lake_plant.jpg|400px|framed|right|Figure 1. Oil sands tailings pond in Fort McMurray, Alberta.&amp;lt;ref&amp;gt;Wikimedia Commons. (June 9, 2015). &amp;#039;&amp;#039;Syncrude&amp;#039;s Mildred Lake site, plant and tailings ponds&amp;#039;&amp;#039; [Online]. Available: http://en.wikipedia.org/wiki/Oil_sands#/media/File:Syncrude_mildred_lake_plant.jpg&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;&#039;&#039;&#039;Tailings ponds&#039;&#039;&#039; are settling ponds that contain the waste byproduct of [[oil sands]] extraction and upgrading. They are a mix of [[water]], sand, silt, clay, unrecovered [[hydrocarbon]]s, and other contaminants.&amp;lt;/onlyinclude&amp;gt;&amp;lt;ref name=alb&amp;gt;Alberta Energy. (June 19, 2015). &#039;&#039;Reclamation&#039;&#039; [Online]. Available: http://www.energy.gov.ab.ca/OilSands/1722.asp&amp;lt;/ref&amp;gt; The management of tailings ponds is one of the most difficult &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;environmental &lt;/del&gt;challenges associated with oil sands &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;development today &lt;/del&gt;and their existence is extremely controversial. Currently, tailings ponds occupy a fair amount of space in &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Alberta - covering &lt;/del&gt;around 77 square [[meter|kilometers]].&amp;lt;ref name=&quot;RE1&quot;&amp;gt;Alberta Government. (July 27, 2015). &#039;&#039;Tailings Ponds&#039;&#039; [Online]. Available: http://oilsands.alberta.ca/tailings.html&amp;lt;/ref&amp;gt; Including all tailings ponds structures along with the ponds themselves, the total covered area is 220 square &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;kilometers -  an &lt;/del&gt;area about 1.5 times larger than the city of Vancouver (about 176 square kilometers &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;in Canada in &lt;/del&gt;2010).&amp;lt;ref name=tailings&amp;gt;Alberta Environment &amp;amp; Water. (June 19, 2015). &#039;&#039;Oil Sands Information Portal: Tailings Ponds – Tailings Ponds Surface Area&#039;&#039; [Online]. Available: http://osip.alberta.ca/library/Dataset/Details/542&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;&#039;&#039;&#039;Tailings ponds&#039;&#039;&#039; are settling ponds that contain the &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[pollution vs &lt;/ins&gt;waste&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;|waste]] &lt;/ins&gt;byproduct of [[oil sands]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;extraction&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/ins&gt;and upgrading. They are a mix of [[water]], sand, silt, clay, unrecovered [[hydrocarbon]]s, and other contaminants.&amp;lt;/onlyinclude&amp;gt;&amp;lt;ref name=alb&amp;gt;Alberta Energy. (June 19, 2015). &#039;&#039;Reclamation&#039;&#039; [Online]. Available: http://www.energy.gov.ab.ca/OilSands/1722.asp&amp;lt;/ref&amp;gt; The management of tailings ponds is one of the most difficult &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[environment]]al &lt;/ins&gt;challenges associated with oil sands and their existence is extremely controversial. Currently, tailings ponds occupy a fair amount of space in &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Alberta—covering &lt;/ins&gt;around 77 square [[meter|kilometers]].&amp;lt;ref name=&quot;RE1&quot;&amp;gt;Alberta Government. (July 27, 2015). &#039;&#039;Tailings Ponds&#039;&#039; [Online]. Available: http://oilsands.alberta.ca/tailings.html&amp;lt;/ref&amp;gt; Including all tailings ponds structures along with the ponds themselves, the total covered area is 220 square &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;kilometers—an &lt;/ins&gt;area about 1.5 times larger than the city of Vancouver (about 176 square kilometers &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;as of &lt;/ins&gt;2010).&amp;lt;ref name=tailings&amp;gt;Alberta Environment &amp;amp; Water. (June 19, 2015). &#039;&#039;Oil Sands Information Portal: Tailings Ponds – Tailings Ponds Surface Area&#039;&#039; [Online]. Available: http://osip.alberta.ca/library/Dataset/Details/542&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are several environmental concerns that are associated with the existence of tailings ponds. The main problem with the ponds is that they include toxic and harmful [[chemical]]s such as ammonia, [[mercury]], and naphthenic [[acid]]s. The water containing these chemicals is toxic to animals, particularly aquatic organisms.&amp;lt;ref name=&quot;RE2&quot;/&amp;gt; If aquatic organisms enter these ponds, significant levels of damage can occur. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Additionally&lt;/del&gt;, these ponds are not sealed tightly. Instead, the water and contaminants from the pond seep into the soil surrounding it, potentially contaminating groundwater and harming wildlife surrounding the pond. As well, these ponds exist almost indefinitely, with over 830 million cubic [[meter]]s requiring long term containment.&amp;lt;ref name=&quot;RE2&quot;/&amp;gt; This poses a risk to wildlife, mainly birds, who can be harmed if they come into contact with the [[water]] in these ponds.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are several environmental concerns that are associated with the existence of tailings ponds. The main problem with the ponds is that they include toxic and harmful [[chemical]]s such as &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;ammonia&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/ins&gt;, [[mercury]], and naphthenic [[acid]]s. The water containing these chemicals is toxic to animals, particularly aquatic organisms.&amp;lt;ref name=&quot;RE2&quot;/&amp;gt; If aquatic organisms enter these ponds, significant levels of damage can occur. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;In addition&lt;/ins&gt;, these ponds are not sealed tightly. Instead, the water and contaminants from the pond seep into the soil surrounding it, potentially contaminating &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;groundwater&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/ins&gt;and harming wildlife surrounding the pond. As well, these ponds exist almost indefinitely, with over 830 million cubic [[meter]]s requiring long term containment.&amp;lt;ref name=&quot;RE2&quot;/&amp;gt; This poses a risk to wildlife, mainly birds, who can be harmed if they come into contact with the [[water]] in these ponds.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Another concern about the use of tailings ponds is the volume of oil sands tailings produced from [[bitumen]] extraction. For every barrel of bitumen extracted from the oil sands, 1.5 barrels of tailings waste is produced.&amp;lt;ref name=&amp;quot;RE2&amp;quot;&amp;gt;Pembina Institute. (June 19, 2015). &amp;#039;&amp;#039;Tailings Ponds&amp;#039;&amp;#039; [Online]. Available: http://www.pembina.org/oil-sands/os101/tailings&amp;lt;/ref&amp;gt; This large volume of tailings requires a large area for storage, and the sheer size of tailings ponds can be an issue, as they encroach on wildlife territory.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Another concern about the use of tailings ponds is the volume of oil sands tailings produced from [[bitumen]] extraction. For every barrel of bitumen extracted from the oil sands, 1.5 barrels of tailings waste is produced.&amp;lt;ref name=&amp;quot;RE2&amp;quot;&amp;gt;Pembina Institute. (June 19, 2015). &amp;#039;&amp;#039;Tailings Ponds&amp;#039;&amp;#039; [Online]. Available: http://www.pembina.org/oil-sands/os101/tailings&amp;lt;/ref&amp;gt; This large volume of tailings requires a large area for storage, and the sheer size of tailings ponds can be an issue, as they encroach on wildlife territory.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Efforts are being made to reduce the impact that tailings ponds have on the environment. First, bird deterrence systems have been created and used to prevent birds from landing on the ponds. These air cannons are used to frighten away the birds if they get too close. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;As well, targets &lt;/del&gt;have been set for companies to reduce tailings and provide specific dates for when the ponds will be closed and reclaimed.&amp;lt;ref name=&quot;RE1&quot;/&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Additionally&lt;/del&gt;, timelines are being created that requires that fluid tailings be processed as quickly as they are being created, preventing tailings growth.&amp;lt;ref name=&quot;RE1&quot;/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Efforts are being made to reduce the impact that tailings ponds have on the environment. First, bird deterrence systems have been created and used to prevent birds from landing on the ponds. These &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;air&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/ins&gt;cannons are used to frighten away the birds if they get too close. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Targets &lt;/ins&gt;have &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;also &lt;/ins&gt;been set for companies to reduce tailings and provide specific dates for when the ponds will be closed and reclaimed.&amp;lt;ref name=&quot;RE1&quot;/&amp;gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;In addition&lt;/ins&gt;, timelines are being created that requires that fluid tailings be processed as quickly as they are being created, preventing tailings growth.&amp;lt;ref name=&quot;RE1&quot;/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Interactive Map==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Interactive Map==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;It can be difficult to comprehend the amount of area that tailings ponds take up. Below is a labelled, interactive map showing the mining pits, tailings ponds, some reclaimed area, and the Athabasca river. Take a note of the scale on the bottom right-hand side of the map (this will change when zooming in and out, but gives an idea of the size of mines and tailings ponds).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;It can be difficult to comprehend the amount of area that tailings ponds take up. Below is a labelled, interactive map showing the mining pits, tailings ponds, some reclaimed area, and the Athabasca river. Take a note of the scale on the bottom right-hand side of the map (this will change when zooming in and out, but gives an idea of the size of mines and tailings ponds).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;html&amp;gt;&amp;lt;iframe src=&quot;https://www.google.com/maps&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;/d&lt;/del&gt;/embed?&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mid&lt;/del&gt;=&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;zT985R0gOSDg&lt;/del&gt;.&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;k3kNoslvTjWQ&lt;/del&gt;&quot; width=&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;780&lt;/del&gt;&quot; height=&quot;585&quot;&amp;gt;&amp;lt;/iframe&amp;gt;&amp;lt;/html&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;html&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;iframe src=&quot;https://www.google.com/maps/embed?&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;pb&lt;/ins&gt;=&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;!1m18!1m12!1m3!1d192097.99566778357!2d-111.76160867348173!3d56.97582978233581!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13&lt;/ins&gt;.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;1!3m3!1m2!1s0x53b0718974f2f7c7%3A0xf31665703d4cb502!2sTar+Island%2C+AB!5e1!3m2!1sen!2sca!4v1532554135571&lt;/ins&gt;&quot; width=&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;800&lt;/ins&gt;&quot; height=&quot;585&quot; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;frameborder=&quot;0&quot; style=&quot;border:0&quot; allowfullscreen&lt;/ins&gt;&amp;gt;&amp;lt;/iframe&amp;gt;&amp;lt;/html&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==For Further Reading==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Oil sands]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Fossil fuel extraction]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Hydrocarbon]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Pollution vs waste]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*Or explore a [[Special:Random|random page]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==References==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==References==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{reflist}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{reflist}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Uploaded]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Uploaded]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>energy&gt;Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=1374&amp;oldid=prev</id>
		<title>J.williams: 1 revision imported</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=1374&amp;oldid=prev"/>
		<updated>2015-08-26T21:31:28Z</updated>

		<summary type="html">&lt;p&gt;1 revision imported&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 21:31, 26 August 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>J.williams</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=1373&amp;oldid=prev</id>
		<title>J.williams at 16:57, 12 August 2015</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Oil_sands_tailings_ponds&amp;diff=1373&amp;oldid=prev"/>
		<updated>2015-08-12T16:57:17Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Category:Done 2015-07-24]] &lt;br /&gt;
[[File:640px-Syncrude_mildred_lake_plant.jpg|400px|framed|right|Figure 1. Oil sands tailings pond in Fort McMurray, Alberta.&amp;lt;ref&amp;gt;Wikimedia Commons. (June 9, 2015). &amp;#039;&amp;#039;Syncrude&amp;#039;s Mildred Lake site, plant and tailings ponds&amp;#039;&amp;#039; [Online]. Available: http://en.wikipedia.org/wiki/Oil_sands#/media/File:Syncrude_mildred_lake_plant.jpg&amp;lt;/ref&amp;gt;]]&lt;br /&gt;
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&amp;lt;onlyinclude&amp;gt;&amp;#039;&amp;#039;&amp;#039;Tailings ponds&amp;#039;&amp;#039;&amp;#039; are settling ponds that contain the waste byproduct of [[oil sands]] extraction and upgrading. They are a mix of [[water]], sand, silt, clay, unrecovered [[hydrocarbon]]s, and other contaminants.&amp;lt;/onlyinclude&amp;gt;&amp;lt;ref name=alb&amp;gt;Alberta Energy. (June 19, 2015). &amp;#039;&amp;#039;Reclamation&amp;#039;&amp;#039; [Online]. Available: http://www.energy.gov.ab.ca/OilSands/1722.asp&amp;lt;/ref&amp;gt; The management of tailings ponds is one of the most difficult environmental challenges associated with oil sands development today and their existence is extremely controversial. Currently, tailings ponds occupy a fair amount of space in Alberta - covering around 77 square [[meter|kilometers]].&amp;lt;ref name=&amp;quot;RE1&amp;quot;&amp;gt;Alberta Government. (July 27, 2015). &amp;#039;&amp;#039;Tailings Ponds&amp;#039;&amp;#039; [Online]. Available: http://oilsands.alberta.ca/tailings.html&amp;lt;/ref&amp;gt; Including all tailings ponds structures along with the ponds themselves, the total covered area is 220 square kilometers -  an area about 1.5 times larger than the city of Vancouver (about 176 square kilometers in Canada in 2010).&amp;lt;ref name=tailings&amp;gt;Alberta Environment &amp;amp; Water. (June 19, 2015). &amp;#039;&amp;#039;Oil Sands Information Portal: Tailings Ponds – Tailings Ponds Surface Area&amp;#039;&amp;#039; [Online]. Available: http://osip.alberta.ca/library/Dataset/Details/542&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
There are several environmental concerns that are associated with the existence of tailings ponds. The main problem with the ponds is that they include toxic and harmful [[chemical]]s such as ammonia, [[mercury]], and naphthenic [[acid]]s. The water containing these chemicals is toxic to animals, particularly aquatic organisms.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; If aquatic organisms enter these ponds, significant levels of damage can occur. Additionally, these ponds are not sealed tightly. Instead, the water and contaminants from the pond seep into the soil surrounding it, potentially contaminating groundwater and harming wildlife surrounding the pond. As well, these ponds exist almost indefinitely, with over 830 million cubic [[meter]]s requiring long term containment.&amp;lt;ref name=&amp;quot;RE2&amp;quot;/&amp;gt; This poses a risk to wildlife, mainly birds, who can be harmed if they come into contact with the [[water]] in these ponds. &lt;br /&gt;
&lt;br /&gt;
Another concern about the use of tailings ponds is the volume of oil sands tailings produced from [[bitumen]] extraction. For every barrel of bitumen extracted from the oil sands, 1.5 barrels of tailings waste is produced.&amp;lt;ref name=&amp;quot;RE2&amp;quot;&amp;gt;Pembina Institute. (June 19, 2015). &amp;#039;&amp;#039;Tailings Ponds&amp;#039;&amp;#039; [Online]. Available: http://www.pembina.org/oil-sands/os101/tailings&amp;lt;/ref&amp;gt; This large volume of tailings requires a large area for storage, and the sheer size of tailings ponds can be an issue, as they encroach on wildlife territory. &lt;br /&gt;
&lt;br /&gt;
Efforts are being made to reduce the impact that tailings ponds have on the environment. First, bird deterrence systems have been created and used to prevent birds from landing on the ponds. These air cannons are used to frighten away the birds if they get too close. As well, targets have been set for companies to reduce tailings and provide specific dates for when the ponds will be closed and reclaimed.&amp;lt;ref name=&amp;quot;RE1&amp;quot;/&amp;gt; Additionally, timelines are being created that requires that fluid tailings be processed as quickly as they are being created, preventing tailings growth.&amp;lt;ref name=&amp;quot;RE1&amp;quot;/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Interactive Map==&lt;br /&gt;
It can be difficult to comprehend the amount of area that tailings ponds take up. Below is a labelled, interactive map showing the mining pits, tailings ponds, some reclaimed area, and the Athabasca river. Take a note of the scale on the bottom right-hand side of the map (this will change when zooming in and out, but gives an idea of the size of mines and tailings ponds).&lt;br /&gt;
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&amp;lt;html&amp;gt;&amp;lt;iframe src=&amp;quot;https://www.google.com/maps/d/embed?mid=zT985R0gOSDg.k3kNoslvTjWQ&amp;quot; width=&amp;quot;780&amp;quot; height=&amp;quot;585&amp;quot;&amp;gt;&amp;lt;/iframe&amp;gt;&amp;lt;/html&amp;gt;&lt;br /&gt;
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==References==&lt;br /&gt;
{{reflist}}&lt;br /&gt;
[[Category:Uploaded]]&lt;/div&gt;</summary>
		<author><name>J.williams</name></author>
	</entry>
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