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		<id>https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=547</id>
		<title>Manning Canyon</title>
		<link rel="alternate" type="text/html" href="https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=547"/>
		<updated>2008-05-19T14:51:58Z</updated>

		<summary type="html">&lt;p&gt;67.164.196.24: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Manning Canyon is located in the Mercur Mining District, adjacent to the West Mercur and&lt;br /&gt;
Fivemile Pass Mining Districts. The Mercur District was first organized in 1870 as the Floyd Mining District&lt;br /&gt;
when silver lode discoveries were made. As time went on, gold became the primary commodity produced,&lt;br /&gt;
causing a production or mining boom from 1898 through 1912. Mines located in the southern Oquirrh&lt;br /&gt;
Mountains have also produced precious and base metals and clay.&lt;br /&gt;
&lt;br /&gt;
[[Image:manning.jpg|thumb|ATV ridden Manning Tailings]]&lt;br /&gt;
&lt;br /&gt;
==History==&lt;br /&gt;
&lt;br /&gt;
In 1890, the Manning Mill was built to treat ore from the Mercur vein by pan amalgamation. The&lt;br /&gt;
Manning Mill was remodeled in the summer of 1890 to process ore by the cyanide process. From 1890 to&lt;br /&gt;
1900 the crude ores mined at Mercur, Utah, 5 miles northwest of Manning, were transported by team and&lt;br /&gt;
wagon and later by a privately owned railroad, and were leached in tanks by percolation with solutions of&lt;br /&gt;
potassium cyanide. The mill expanded to 50 tons daily, then to 100 tons in 1893, to 200 tons in 1896, and &lt;br /&gt;
then to 500 tons. Following construction of the Golden Gate Mill in 1898, the Manning Mill ceased treating&lt;br /&gt;
Mercur ores and was used to process tailings. In 1933, a second mill was constructed at the Manning Mill&lt;br /&gt;
Site to re-treat the estimated 455,000 tons of tailings in large dumps. From September 1934 to July 1936,&lt;br /&gt;
an average of 536 tons of material (both tailings and crude ore) were treated per day. In addition to&lt;br /&gt;
re-treating the tailings dumps left by the operations of the prior Manning Mill, the second Manning Mill&lt;br /&gt;
operated as a custom plant to treat crude ores from Mercur and some ores from outside the Camp Floyd&lt;br /&gt;
Mining District. After this second mill completed re-treatment of all the Manning &amp;quot;dumps,&amp;quot; the mill was&lt;br /&gt;
relocated in 1937 to Mercur.&lt;br /&gt;
&lt;br /&gt;
Much of the private land in the surrounding areas includes patented mining claims from the late&lt;br /&gt;
1800s and early 1900s. Clay mining on these private lands remains active today. Private land located to the&lt;br /&gt;
south is used for agricultural purposes, including wheat fields approximately 1.8 miles southeast of the Site.&lt;br /&gt;
The small town of Fairfield is located 3.5 miles southeast of the Site. The Site has a history of recreational&lt;br /&gt;
use. Purchased by its current owners in the 1950s, the private portion of the Site hosted national motocross&lt;br /&gt;
events in the 1970s. Since then, off-road vehicle users and other recreational users have frequented the Site.&lt;br /&gt;
March through September are high use months, usually receiving six to 10 vehicles per day with multiple&lt;br /&gt;
passengers. The winter months receive less visitors. The BLM Salt Lake Field Office estimates an annual&lt;br /&gt;
visitation of approximately 1,050 by tourists and locals. All terrain vehicles (ATVs), bicyclists, campers, and&lt;br /&gt;
youths shooting paintball guns have been observed on the tailings deposits within the Site.&lt;br /&gt;
&lt;br /&gt;
 &#039;&#039;Mojave Underground does not agree with, encourage or support the destruction or reclamation of mining sites in any way shape, or form.&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
==Reclemation Actions==&lt;br /&gt;
BLM completed the design plans and specifications using the Bureau of Reclamation’s Provo&lt;br /&gt;
office. Other ongoing activity includes funding requests and negotiations with potentially responsible parties.&lt;br /&gt;
A construction contractor, the Opal Group, was selected and Phase I of the work will begin during 2002.&lt;br /&gt;
Phase I consists of constructing run-on controls and removal and consolidation of the upper tailings into the&lt;br /&gt;
repository area. Phase II, to be conducted in 2003, will consist of ongoing construction of the repository&lt;br /&gt;
and cap. Phase III, to be conducted in 2004 will consist of removal of the lower tailings area near the&lt;br /&gt;
railroad right of way and placement into the repository.&lt;br /&gt;
The Utah Department of Health was consulted on several occasions and was been sent sampling&lt;br /&gt;
plans, preliminary assessments and the EE/CA for review and comment. The Utah County Health&lt;br /&gt;
Department has been consulted for information on the Fairfield water supply. The State and County will be&lt;br /&gt;
involved in construction of the remedy for the Site. The County and Utah Department of Transportation&lt;br /&gt;
have been involved in review of design and construction aspects concerning improvements to the County&lt;br /&gt;
road and other road access.&lt;br /&gt;
&lt;br /&gt;
===PROPOSED ACTIONS AND ESTIMATED COSTS===&lt;br /&gt;
The EE/CA presented a study of the nature and extent of contamination at Manning Canyon,&lt;br /&gt;
removal action objectives and action levels, a brief risk assessment and various alternatives to remedy the&lt;br /&gt;
health risks. The overall goal of the response alternatives evaluated in the EE/CA is to reduce the release&lt;br /&gt;
and threat of release of arsenic, mercury, and lead from the Manning Canyon Site, thereby reducing risks to&lt;br /&gt;
human health and the environment. The alternatives were screened based on effectiveness in reducing risk,&lt;br /&gt;
implementability and cost. A preferred alternative of an on-site repository was selected. The EE/CA has&lt;br /&gt;
been prepared in accordance with the criteria established under the CERCLA, and sections of the National&lt;br /&gt;
Contingency Plan (NCP) applicable to removal actions (40 CFR 300.415 (b)(4)(i)). The EE/CA is also&lt;br /&gt;
consistent with EPA guidance document, Guidance on Conducting Non-Time-Critical Removal Actions&lt;br /&gt;
Under CERCLA. The EE/CA removal action objectives were:&lt;br /&gt;
&lt;br /&gt;
* Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water during flood events.&lt;br /&gt;
&lt;br /&gt;
* Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
* Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to air pathways.&lt;br /&gt;
&lt;br /&gt;
* Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
* Reduce or eliminate the potential for exposure to humans and wildlife from direct contact, ingestion, or&lt;br /&gt;
inhalation with contaminated surface soils.&lt;br /&gt;
&lt;br /&gt;
* Conceptual designs were developed for each of the four removal alternatives, and an opinion of probable&lt;br /&gt;
cost was prepared for each.&lt;br /&gt;
&lt;br /&gt;
===Estimate Cost of Reclaiming===&lt;br /&gt;
&#039;&#039;&#039;On-Site Repository and Surface Water Diversion &#039;&#039;(Selected)&#039;&#039;&#039;&#039;&#039;&lt;br /&gt;
 &#039;&#039;&#039;$7,225,000-$9,211,000&#039;&#039;&#039;&lt;br /&gt;
The final EE/CA Alternative 2 is the recommended alternative. This alternative involves placing the&lt;br /&gt;
tailings from the piles and ponds into an on-site repository near the tailings deposits. This represents a minor&lt;br /&gt;
design change from the Draft Final EE/CA which conceptualized two repositories. Additional analyses&lt;br /&gt;
demonstrated that a single repository is less expensive and reduces operation and maintenance&lt;br /&gt;
requirements. The repository will be sited to keep the consolidated tailings out of the 500-year flood plain.&lt;br /&gt;
The tailings that are contained near drainage courses will be relocated to reduce the potential for these&lt;br /&gt;
tailings to be washed downstream during flood events. In addition, the channel will be restored and sized for&lt;br /&gt;
the 500-year flood event, and run-on controls will be established around the repository. This alternative best&lt;br /&gt;
met the screening criteria as most effective, implementable and cost-effective.&lt;br /&gt;
&lt;br /&gt;
==Requirements==&lt;br /&gt;
High Clearance Vehicle&lt;br /&gt;
&lt;br /&gt;
==Location==&lt;br /&gt;
 40.298485° -112.166785° @ 5900&#039;&lt;br /&gt;
From Fairfield, head south on Cedar Valley Rd/UT-73 toward 1620 N for 1.9 mi.  Turn right at Manning Canyon Rd, and follow main road until you come upon the area.&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&amp;lt;googlemap lat=&amp;quot;40.298485&amp;quot; lon=&amp;quot;-112.166785&amp;quot; zoom=&amp;quot;14&amp;quot; controls=&amp;quot;small&amp;quot;&amp;gt;&lt;br /&gt;
40.298485,-112.166785,Manning Canyon&lt;br /&gt;
&amp;lt;/googlemap&amp;gt;&lt;/div&gt;</summary>
		<author><name>67.164.196.24</name></author>
	</entry>
	<entry>
		<id>https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=546</id>
		<title>Manning Canyon</title>
		<link rel="alternate" type="text/html" href="https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=546"/>
		<updated>2008-05-19T14:47:24Z</updated>

		<summary type="html">&lt;p&gt;67.164.196.24: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Manning Canyon is located in the Mercur Mining District, adjacent to the West Mercur and&lt;br /&gt;
Fivemile Pass Mining Districts. The Mercur District was first organized in 1870 as the Floyd Mining District&lt;br /&gt;
when silver lode discoveries were made. As time went on, gold became the primary commodity produced,&lt;br /&gt;
causing a production or mining boom from 1898 through 1912. Mines located in the southern Oquirrh&lt;br /&gt;
Mountains have also produced precious and base metals and clay.&lt;br /&gt;
&lt;br /&gt;
[[Image:manning.jpg|thumb|ATV ridden Manning Tailings]]&lt;br /&gt;
&lt;br /&gt;
==History==&lt;br /&gt;
&lt;br /&gt;
In 1890, the Manning Mill was built to treat ore from the Mercur vein by pan amalgamation. The&lt;br /&gt;
Manning Mill was remodeled in the summer of 1890 to process ore by the cyanide process. From 1890 to&lt;br /&gt;
1900 the crude ores mined at Mercur, Utah, 5 miles northwest of Manning, were transported by team and&lt;br /&gt;
wagon and later by a privately owned railroad, and were leached in tanks by percolation with solutions of&lt;br /&gt;
potassium cyanide. The mill expanded to 50 tons daily, then to 100 tons in 1893, to 200 tons in 1896, and &lt;br /&gt;
then to 500 tons. Following construction of the Golden Gate Mill in 1898, the Manning Mill ceased treating&lt;br /&gt;
Mercur ores and was used to process tailings. In 1933, a second mill was constructed at the Manning Mill&lt;br /&gt;
Site to re-treat the estimated 455,000 tons of tailings in large dumps. From September 1934 to July 1936,&lt;br /&gt;
an average of 536 tons of material (both tailings and crude ore) were treated per day. In addition to&lt;br /&gt;
re-treating the tailings dumps left by the operations of the prior Manning Mill, the second Manning Mill&lt;br /&gt;
operated as a custom plant to treat crude ores from Mercur and some ores from outside the Camp Floyd&lt;br /&gt;
Mining District. After this second mill completed re-treatment of all the Manning &amp;quot;dumps,&amp;quot; the mill was&lt;br /&gt;
relocated in 1937 to Mercur.&lt;br /&gt;
&lt;br /&gt;
Much of the private land in the surrounding areas includes patented mining claims from the late&lt;br /&gt;
1800s and early 1900s. Clay mining on these private lands remains active today. Private land located to the&lt;br /&gt;
south is used for agricultural purposes, including wheat fields approximately 1.8 miles southeast of the Site.&lt;br /&gt;
The small town of Fairfield is located 3.5 miles southeast of the Site. The Site has a history of recreational&lt;br /&gt;
use. Purchased by its current owners in the 1950s, the private portion of the Site hosted national motocross&lt;br /&gt;
events in the 1970s. Since then, off-road vehicle users and other recreational users have frequented the Site.&lt;br /&gt;
March through September are high use months, usually receiving six to 10 vehicles per day with multiple&lt;br /&gt;
passengers. The winter months receive less visitors. The BLM Salt Lake Field Office estimates an annual&lt;br /&gt;
visitation of approximately 1,050 by tourists and locals. All terrain vehicles (ATVs), bicyclists, campers, and&lt;br /&gt;
youths shooting paintball guns have been observed on the tailings deposits within the Site.&lt;br /&gt;
&lt;br /&gt;
 &#039;&#039;Mojave Underground does not encourage or support the destruction or reclamation of mining sites in any way shape, or form.&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
==Reclemation Actions==&lt;br /&gt;
BLM completed the design plans and specifications using the Bureau of Reclamation’s Provo&lt;br /&gt;
office. Other ongoing activity includes funding requests and negotiations with potentially responsible parties.&lt;br /&gt;
A construction contractor, the Opal Group, was selected and Phase I of the work will begin during 2002.&lt;br /&gt;
Phase I consists of constructing run-on controls and removal and consolidation of the upper tailings into the&lt;br /&gt;
repository area. Phase II, to be conducted in 2003, will consist of ongoing construction of the repository&lt;br /&gt;
and cap. Phase III, to be conducted in 2004 will consist of removal of the lower tailings area near the&lt;br /&gt;
railroad right of way and placement into the repository.&lt;br /&gt;
The Utah Department of Health was consulted on several occasions and was been sent sampling&lt;br /&gt;
plans, preliminary assessments and the EE/CA for review and comment. The Utah County Health&lt;br /&gt;
Department has been consulted for information on the Fairfield water supply. The State and County will be&lt;br /&gt;
involved in construction of the remedy for the Site. The County and Utah Department of Transportation&lt;br /&gt;
have been involved in review of design and construction aspects concerning improvements to the County&lt;br /&gt;
road and other road access.&lt;br /&gt;
&lt;br /&gt;
===PROPOSED ACTIONS AND ESTIMATED COSTS===&lt;br /&gt;
The EE/CA presented a study of the nature and extent of contamination at Manning Canyon,&lt;br /&gt;
removal action objectives and action levels, a brief risk assessment and various alternatives to remedy the&lt;br /&gt;
health risks. The overall goal of the response alternatives evaluated in the EE/CA is to reduce the release&lt;br /&gt;
and threat of release of arsenic, mercury, and lead from the Manning Canyon Site, thereby reducing risks to&lt;br /&gt;
human health and the environment. The alternatives were screened based on effectiveness in reducing risk,&lt;br /&gt;
implementability and cost. A preferred alternative of an on-site repository was selected. The EE/CA has&lt;br /&gt;
been prepared in accordance with the criteria established under the CERCLA, and sections of the National&lt;br /&gt;
Contingency Plan (NCP) applicable to removal actions (40 CFR 300.415 (b)(4)(i)). The EE/CA is also&lt;br /&gt;
consistent with EPA guidance document, Guidance on Conducting Non-Time-Critical Removal Actions&lt;br /&gt;
Under CERCLA. The EE/CA removal action objectives were:&lt;br /&gt;
&lt;br /&gt;
* Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water during flood events.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to air pathways.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the potential for exposure to humans and wildlife from direct contact, ingestion, or&lt;br /&gt;
inhalation with contaminated surface soils.&lt;br /&gt;
&lt;br /&gt;
Conceptual designs were developed for each of the four removal alternatives, and an opinion of probable&lt;br /&gt;
cost was prepared for each.&lt;br /&gt;
&lt;br /&gt;
===Estimate Cost of Reclaiming===&lt;br /&gt;
&#039;&#039;&#039;On-Site Repository and Surface Water Diversion &#039;&#039;(Selected)&#039;&#039;&#039;&#039;&#039;&lt;br /&gt;
 &#039;&#039;&#039;$7,225,000-$9,211,000&#039;&#039;&#039;&lt;br /&gt;
The final EE/CA Alternative 2 is the recommended alternative. This alternative involves placing the&lt;br /&gt;
tailings from the piles and ponds into an on-site repository near the tailings deposits. This represents a minor&lt;br /&gt;
design change from the Draft Final EE/CA which conceptualized two repositories. Additional analyses&lt;br /&gt;
demonstrated that a single repository is less expensive and reduces operation and maintenance&lt;br /&gt;
requirements. The repository will be sited to keep the consolidated tailings out of the 500-year flood plain.&lt;br /&gt;
The tailings that are contained near drainage courses will be relocated to reduce the potential for these&lt;br /&gt;
tailings to be washed downstream during flood events. In addition, the channel will be restored and sized for&lt;br /&gt;
the 500-year flood event, and run-on controls will be established around the repository. This alternative best&lt;br /&gt;
met the screening criteria as most effective, implementable and cost-effective.&lt;br /&gt;
&lt;br /&gt;
==Requirements==&lt;br /&gt;
High Clearance Vehicle&lt;br /&gt;
&lt;br /&gt;
==Location==&lt;br /&gt;
 40.298485° -112.166785° @ 5900&#039;&lt;br /&gt;
From Fairfield, head south on Cedar Valley Rd/UT-73 toward 1620 N for 1.9 mi.  Turn right at Manning Canyon Rd, and follow main road until you come upon the area.&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&amp;lt;googlemap lat=&amp;quot;40.298485&amp;quot; lon=&amp;quot;-112.166785&amp;quot; zoom=&amp;quot;14&amp;quot; controls=&amp;quot;small&amp;quot;&amp;gt;&lt;br /&gt;
40.298485,-112.166785,Manning Canyon&lt;br /&gt;
&amp;lt;/googlemap&amp;gt;&lt;/div&gt;</summary>
		<author><name>67.164.196.24</name></author>
	</entry>
	<entry>
		<id>https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=545</id>
		<title>Manning Canyon</title>
		<link rel="alternate" type="text/html" href="https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=545"/>
		<updated>2008-05-19T14:47:04Z</updated>

		<summary type="html">&lt;p&gt;67.164.196.24: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Manning Canyon is located in the Mercur Mining District, adjacent to the West Mercur and&lt;br /&gt;
Fivemile Pass Mining Districts. The Mercur District was first organized in 1870 as the Floyd Mining District&lt;br /&gt;
when silver lode discoveries were made. As time went on, gold became the primary commodity produced,&lt;br /&gt;
causing a production or mining boom from 1898 through 1912. Mines located in the southern Oquirrh&lt;br /&gt;
Mountains have also produced precious and base metals and clay.&lt;br /&gt;
&lt;br /&gt;
[[Image:manning.jpg|thumb|ATV ridden Manning Tailings]]&lt;br /&gt;
&lt;br /&gt;
==History==&lt;br /&gt;
&lt;br /&gt;
In 1890, the Manning Mill was built to treat ore from the Mercur vein by pan amalgamation. The&lt;br /&gt;
Manning Mill was remodeled in the summer of 1890 to process ore by the cyanide process. From 1890 to&lt;br /&gt;
1900 the crude ores mined at Mercur, Utah, 5 miles northwest of Manning, were transported by team and&lt;br /&gt;
wagon and later by a privately owned railroad, and were leached in tanks by percolation with solutions of&lt;br /&gt;
potassium cyanide. The mill expanded to 50 tons daily, then to 100 tons in 1893, to 200 tons in 1896, and &lt;br /&gt;
then to 500 tons. Following construction of the Golden Gate Mill in 1898, the Manning Mill ceased treating&lt;br /&gt;
Mercur ores and was used to process tailings. In 1933, a second mill was constructed at the Manning Mill&lt;br /&gt;
Site to re-treat the estimated 455,000 tons of tailings in large dumps. From September 1934 to July 1936,&lt;br /&gt;
an average of 536 tons of material (both tailings and crude ore) were treated per day. In addition to&lt;br /&gt;
re-treating the tailings dumps left by the operations of the prior Manning Mill, the second Manning Mill&lt;br /&gt;
operated as a custom plant to treat crude ores from Mercur and some ores from outside the Camp Floyd&lt;br /&gt;
Mining District. After this second mill completed re-treatment of all the Manning &amp;quot;dumps,&amp;quot; the mill was&lt;br /&gt;
relocated in 1937 to Mercur.&lt;br /&gt;
&lt;br /&gt;
Much of the private land in the surrounding areas includes patented mining claims from the late&lt;br /&gt;
1800s and early 1900s. Clay mining on these private lands remains active today. Private land located to the&lt;br /&gt;
south is used for agricultural purposes, including wheat fields approximately 1.8 miles southeast of the Site.&lt;br /&gt;
The small town of Fairfield is located 3.5 miles southeast of the Site. The Site has a history of recreational&lt;br /&gt;
use. Purchased by its current owners in the 1950s, the private portion of the Site hosted national motocross&lt;br /&gt;
events in the 1970s. Since then, off-road vehicle users and other recreational users have frequented the Site.&lt;br /&gt;
March through September are high use months, usually receiving six to 10 vehicles per day with multiple&lt;br /&gt;
passengers. The winter months receive less visitors. The BLM Salt Lake Field Office estimates an annual&lt;br /&gt;
visitation of approximately 1,050 by tourists and locals. All terrain vehicles (ATVs), bicyclists, campers, and&lt;br /&gt;
youths shooting paintball guns have been observed on the tailings deposits within the Site.&lt;br /&gt;
&lt;br /&gt;
 &#039;&#039;Mojave Underground does not encourage or support the destruction or reclamation of mining sites in any way shape, or form.&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
==Reclemation Actions==&lt;br /&gt;
BLM completed the design plans and specifications using the Bureau of Reclamation’s Provo&lt;br /&gt;
office. Other ongoing activity includes funding requests and negotiations with potentially responsible parties.&lt;br /&gt;
A construction contractor, the Opal Group, was selected and Phase I of the work will begin during 2002.&lt;br /&gt;
Phase I consists of constructing run-on controls and removal and consolidation of the upper tailings into the&lt;br /&gt;
repository area. Phase II, to be conducted in 2003, will consist of ongoing construction of the repository&lt;br /&gt;
and cap. Phase III, to be conducted in 2004 will consist of removal of the lower tailings area near the&lt;br /&gt;
railroad right of way and placement into the repository.&lt;br /&gt;
The Utah Department of Health was consulted on several occasions and was been sent sampling&lt;br /&gt;
plans, preliminary assessments and the EE/CA for review and comment. The Utah County Health&lt;br /&gt;
Department has been consulted for information on the Fairfield water supply. The State and County will be&lt;br /&gt;
involved in construction of the remedy for the Site. The County and Utah Department of Transportation&lt;br /&gt;
have been involved in review of design and construction aspects concerning improvements to the County&lt;br /&gt;
road and other road access.&lt;br /&gt;
&lt;br /&gt;
===PROPOSED ACTIONS AND ESTIMATED COSTS===&lt;br /&gt;
The EE/CA presented a study of the nature and extent of contamination at Manning Canyon,&lt;br /&gt;
removal action objectives and action levels, a brief risk assessment and various alternatives to remedy the&lt;br /&gt;
health risks. The overall goal of the response alternatives evaluated in the EE/CA is to reduce the release&lt;br /&gt;
and threat of release of arsenic, mercury, and lead from the Manning Canyon Site, thereby reducing risks to&lt;br /&gt;
human health and the environment. The alternatives were screened based on effectiveness in reducing risk,&lt;br /&gt;
implementability and cost. A preferred alternative of an on-site repository was selected. The EE/CA has&lt;br /&gt;
been prepared in accordance with the criteria established under the CERCLA, and sections of the National&lt;br /&gt;
Contingency Plan (NCP) applicable to removal actions (40 CFR 300.415 (b)(4)(i)). The EE/CA is also&lt;br /&gt;
consistent with EPA guidance document, Guidance on Conducting Non-Time-Critical Removal Actions&lt;br /&gt;
Under CERCLA. The EE/CA removal action objectives were:&lt;br /&gt;
&lt;br /&gt;
*Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water during flood events.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to air pathways.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
Reduce or eliminate the potential for exposure to humans and wildlife from direct contact, ingestion, or&lt;br /&gt;
inhalation with contaminated surface soils.&lt;br /&gt;
&lt;br /&gt;
Conceptual designs were developed for each of the four removal alternatives, and an opinion of probable&lt;br /&gt;
cost was prepared for each.&lt;br /&gt;
&lt;br /&gt;
===Estimate Cost of Reclaiming===&lt;br /&gt;
&#039;&#039;&#039;On-Site Repository and Surface Water Diversion &#039;&#039;(Selected)&#039;&#039;&#039;&#039;&#039;&lt;br /&gt;
 &#039;&#039;&#039;$7,225,000-$9,211,000&#039;&#039;&#039;&lt;br /&gt;
The final EE/CA Alternative 2 is the recommended alternative. This alternative involves placing the&lt;br /&gt;
tailings from the piles and ponds into an on-site repository near the tailings deposits. This represents a minor&lt;br /&gt;
design change from the Draft Final EE/CA which conceptualized two repositories. Additional analyses&lt;br /&gt;
demonstrated that a single repository is less expensive and reduces operation and maintenance&lt;br /&gt;
requirements. The repository will be sited to keep the consolidated tailings out of the 500-year flood plain.&lt;br /&gt;
The tailings that are contained near drainage courses will be relocated to reduce the potential for these&lt;br /&gt;
tailings to be washed downstream during flood events. In addition, the channel will be restored and sized for&lt;br /&gt;
the 500-year flood event, and run-on controls will be established around the repository. This alternative best&lt;br /&gt;
met the screening criteria as most effective, implementable and cost-effective.&lt;br /&gt;
&lt;br /&gt;
==Requirements==&lt;br /&gt;
High Clearance Vehicle&lt;br /&gt;
&lt;br /&gt;
==Location==&lt;br /&gt;
 40.298485° -112.166785° @ 5900&#039;&lt;br /&gt;
From Fairfield, head south on Cedar Valley Rd/UT-73 toward 1620 N for 1.9 mi.  Turn right at Manning Canyon Rd, and follow main road until you come upon the area.&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&amp;lt;googlemap lat=&amp;quot;40.298485&amp;quot; lon=&amp;quot;-112.166785&amp;quot; zoom=&amp;quot;14&amp;quot; controls=&amp;quot;small&amp;quot;&amp;gt;&lt;br /&gt;
40.298485,-112.166785,Manning Canyon&lt;br /&gt;
&amp;lt;/googlemap&amp;gt;&lt;/div&gt;</summary>
		<author><name>67.164.196.24</name></author>
	</entry>
	<entry>
		<id>https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=544</id>
		<title>Manning Canyon</title>
		<link rel="alternate" type="text/html" href="https://mojaveunderground.com/wiki/index.php?title=Manning_Canyon&amp;diff=544"/>
		<updated>2008-05-19T14:46:15Z</updated>

		<summary type="html">&lt;p&gt;67.164.196.24: Corrected Bulliting&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Manning Canyon is located in the Mercur Mining District, adjacent to the West Mercur and&lt;br /&gt;
Fivemile Pass Mining Districts. The Mercur District was first organized in 1870 as the Floyd Mining District&lt;br /&gt;
when silver lode discoveries were made. As time went on, gold became the primary commodity produced,&lt;br /&gt;
causing a production or mining boom from 1898 through 1912. Mines located in the southern Oquirrh&lt;br /&gt;
Mountains have also produced precious and base metals and clay.&lt;br /&gt;
&lt;br /&gt;
[[Image:manning.jpg|thumb|ATV ridden Manning Tailings]]&lt;br /&gt;
&lt;br /&gt;
==History==&lt;br /&gt;
&lt;br /&gt;
In 1890, the Manning Mill was built to treat ore from the Mercur vein by pan amalgamation. The&lt;br /&gt;
Manning Mill was remodeled in the summer of 1890 to process ore by the cyanide process. From 1890 to&lt;br /&gt;
1900 the crude ores mined at Mercur, Utah, 5 miles northwest of Manning, were transported by team and&lt;br /&gt;
wagon and later by a privately owned railroad, and were leached in tanks by percolation with solutions of&lt;br /&gt;
potassium cyanide. The mill expanded to 50 tons daily, then to 100 tons in 1893, to 200 tons in 1896, and &lt;br /&gt;
then to 500 tons. Following construction of the Golden Gate Mill in 1898, the Manning Mill ceased treating&lt;br /&gt;
Mercur ores and was used to process tailings. In 1933, a second mill was constructed at the Manning Mill&lt;br /&gt;
Site to re-treat the estimated 455,000 tons of tailings in large dumps. From September 1934 to July 1936,&lt;br /&gt;
an average of 536 tons of material (both tailings and crude ore) were treated per day. In addition to&lt;br /&gt;
re-treating the tailings dumps left by the operations of the prior Manning Mill, the second Manning Mill&lt;br /&gt;
operated as a custom plant to treat crude ores from Mercur and some ores from outside the Camp Floyd&lt;br /&gt;
Mining District. After this second mill completed re-treatment of all the Manning &amp;quot;dumps,&amp;quot; the mill was&lt;br /&gt;
relocated in 1937 to Mercur.&lt;br /&gt;
&lt;br /&gt;
Much of the private land in the surrounding areas includes patented mining claims from the late&lt;br /&gt;
1800s and early 1900s. Clay mining on these private lands remains active today. Private land located to the&lt;br /&gt;
south is used for agricultural purposes, including wheat fields approximately 1.8 miles southeast of the Site.&lt;br /&gt;
The small town of Fairfield is located 3.5 miles southeast of the Site. The Site has a history of recreational&lt;br /&gt;
use. Purchased by its current owners in the 1950s, the private portion of the Site hosted national motocross&lt;br /&gt;
events in the 1970s. Since then, off-road vehicle users and other recreational users have frequented the Site.&lt;br /&gt;
March through September are high use months, usually receiving six to 10 vehicles per day with multiple&lt;br /&gt;
passengers. The winter months receive less visitors. The BLM Salt Lake Field Office estimates an annual&lt;br /&gt;
visitation of approximately 1,050 by tourists and locals. All terrain vehicles (ATVs), bicyclists, campers, and&lt;br /&gt;
youths shooting paintball guns have been observed on the tailings deposits within the Site.&lt;br /&gt;
&lt;br /&gt;
 &#039;&#039;Mojave Underground does not encourage or support the destruction or reclamation of mining sites in any way shape, or form.&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
==Reclemation Actions==&lt;br /&gt;
BLM completed the design plans and specifications using the Bureau of Reclamation’s Provo&lt;br /&gt;
office. Other ongoing activity includes funding requests and negotiations with potentially responsible parties.&lt;br /&gt;
A construction contractor, the Opal Group, was selected and Phase I of the work will begin during 2002.&lt;br /&gt;
Phase I consists of constructing run-on controls and removal and consolidation of the upper tailings into the&lt;br /&gt;
repository area. Phase II, to be conducted in 2003, will consist of ongoing construction of the repository&lt;br /&gt;
and cap. Phase III, to be conducted in 2004 will consist of removal of the lower tailings area near the&lt;br /&gt;
railroad right of way and placement into the repository.&lt;br /&gt;
The Utah Department of Health was consulted on several occasions and was been sent sampling&lt;br /&gt;
plans, preliminary assessments and the EE/CA for review and comment. The Utah County Health&lt;br /&gt;
Department has been consulted for information on the Fairfield water supply. The State and County will be&lt;br /&gt;
involved in construction of the remedy for the Site. The County and Utah Department of Transportation&lt;br /&gt;
have been involved in review of design and construction aspects concerning improvements to the County&lt;br /&gt;
road and other road access.&lt;br /&gt;
&lt;br /&gt;
===PROPOSED ACTIONS AND ESTIMATED COSTS===&lt;br /&gt;
The EE/CA presented a study of the nature and extent of contamination at Manning Canyon,&lt;br /&gt;
removal action objectives and action levels, a brief risk assessment and various alternatives to remedy the&lt;br /&gt;
health risks. The overall goal of the response alternatives evaluated in the EE/CA is to reduce the release&lt;br /&gt;
and threat of release of arsenic, mercury, and lead from the Manning Canyon Site, thereby reducing risks to&lt;br /&gt;
human health and the environment. The alternatives were screened based on effectiveness in reducing risk,&lt;br /&gt;
implementability and cost. A preferred alternative of an on-site repository was selected. The EE/CA has&lt;br /&gt;
been prepared in accordance with the criteria established under the CERCLA, and sections of the National&lt;br /&gt;
Contingency Plan (NCP) applicable to removal actions (40 CFR 300.415 (b)(4)(i)). The EE/CA is also&lt;br /&gt;
consistent with EPA guidance document, Guidance on Conducting Non-Time-Critical Removal Actions&lt;br /&gt;
Under CERCLA. The EE/CA removal action objectives were:&lt;br /&gt;
&lt;br /&gt;
*Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water during flood events.&lt;br /&gt;
&lt;br /&gt;
*Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via&lt;br /&gt;
surface water to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
*Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to air pathways.&lt;br /&gt;
&lt;br /&gt;
*Reduce or eliminate the release of arsenic, lead, and mercury from the Manning Canyon mill site via soil&lt;br /&gt;
to ground water pathways.&lt;br /&gt;
&lt;br /&gt;
*Reduce or eliminate the potential for exposure to humans and wildlife from direct contact, ingestion, or&lt;br /&gt;
inhalation with contaminated surface soils.&lt;br /&gt;
&lt;br /&gt;
*Conceptual designs were developed for each of the four removal alternatives, and an opinion of probable&lt;br /&gt;
cost was prepared for each.&lt;br /&gt;
&lt;br /&gt;
===Estimate Cost of Reclaiming===&lt;br /&gt;
&#039;&#039;&#039;On-Site Repository and Surface Water Diversion &#039;&#039;(Selected)&#039;&#039;&#039;&#039;&#039;&lt;br /&gt;
 &#039;&#039;&#039;$7,225,000-$9,211,000&#039;&#039;&#039;&lt;br /&gt;
The final EE/CA Alternative 2 is the recommended alternative. This alternative involves placing the&lt;br /&gt;
tailings from the piles and ponds into an on-site repository near the tailings deposits. This represents a minor&lt;br /&gt;
design change from the Draft Final EE/CA which conceptualized two repositories. Additional analyses&lt;br /&gt;
demonstrated that a single repository is less expensive and reduces operation and maintenance&lt;br /&gt;
requirements. The repository will be sited to keep the consolidated tailings out of the 500-year flood plain.&lt;br /&gt;
The tailings that are contained near drainage courses will be relocated to reduce the potential for these&lt;br /&gt;
tailings to be washed downstream during flood events. In addition, the channel will be restored and sized for&lt;br /&gt;
the 500-year flood event, and run-on controls will be established around the repository. This alternative best&lt;br /&gt;
met the screening criteria as most effective, implementable and cost-effective.&lt;br /&gt;
&lt;br /&gt;
==Requirements==&lt;br /&gt;
High Clearance Vehicle&lt;br /&gt;
&lt;br /&gt;
==Location==&lt;br /&gt;
 40.298485° -112.166785° @ 5900&#039;&lt;br /&gt;
From Fairfield, head south on Cedar Valley Rd/UT-73 toward 1620 N for 1.9 mi.  Turn right at Manning Canyon Rd, and follow main road until you come upon the area.&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&amp;lt;googlemap lat=&amp;quot;40.298485&amp;quot; lon=&amp;quot;-112.166785&amp;quot; zoom=&amp;quot;14&amp;quot; controls=&amp;quot;small&amp;quot;&amp;gt;&lt;br /&gt;
40.298485,-112.166785,Manning Canyon&lt;br /&gt;
&amp;lt;/googlemap&amp;gt;&lt;/div&gt;</summary>
		<author><name>67.164.196.24</name></author>
	</entry>
</feed>