https://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&feed=atom&action=historyGuidance for meeting chloride TMDL MS4 permit requirements - Revision history2024-03-28T21:06:33ZRevision history for this page on the wikiMediaWiki 1.34.1https://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=65792&oldid=prevMtrojan: /* Chloride Total Maximum Daily Loads (TMDLs) */2023-01-17T15:13:26Z<p><span dir="auto"><span class="autocomment">Chloride Total Maximum Daily Loads (TMDLs)</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>The EPA has approved 37 <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the [https://www.pca.state.mn.us/sites/default/files/wq-iw7-49e.pdf Lower Minnesota River Watershed TMDL], [https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/<del class="diffchange diffchange-inline">water</del>/<del class="diffchange diffchange-inline">tmdl</del>/<del class="diffchange diffchange-inline">nine</del>-<del class="diffchange diffchange-inline">mile</del>-<del class="diffchange diffchange-inline">creek-turbidity-impaired-biota-and-chloride-tmdl-project </del>Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/<del class="diffchange diffchange-inline">water</del>/<del class="diffchange diffchange-inline">tmdl</del>/<del class="diffchange diffchange-inline">shingle</del>-<del class="diffchange diffchange-inline">creek</del>-<del class="diffchange diffchange-inline">chloride-tmdl-project </del>Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information.</div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>The EPA has approved 37 <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the [https://www.pca.state.mn.us/sites/default/files/wq-iw7-49e.pdf Lower Minnesota River Watershed TMDL], [https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/<ins class="diffchange diffchange-inline">sites</ins>/<ins class="diffchange diffchange-inline">default</ins>/<ins class="diffchange diffchange-inline">files/wq</ins>-<ins class="diffchange diffchange-inline">iw11</ins>-<ins class="diffchange diffchange-inline">08e.pdf </ins>Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/<ins class="diffchange diffchange-inline">sites</ins>/<ins class="diffchange diffchange-inline">default</ins>/<ins class="diffchange diffchange-inline">files/wq</ins>-<ins class="diffchange diffchange-inline">iw8</ins>-<ins class="diffchange diffchange-inline">02c.pdf </ins>Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information.</div></td></tr>
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</table>Mtrojanhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=62887&oldid=prevMtrojan at 14:53, 23 November 20222022-11-23T14:53:41Z<p></p>
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</table>Mtrojanhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=62878&oldid=prevMtrojan at 14:43, 23 November 20222022-11-23T14:43:51Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>To link to other pages providing information and guidance on TMDLS, [[Total Maximum Daily Loads (TMDLs)|click here]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>To link to other pages providing information and guidance on TMDLS, [[Total Maximum Daily Loads (TMDLs)|click here]]</div></td></tr>
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</table>Mtrojanhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=50811&oldid=prevAbosch: /* Annually conduct an assessment of the permittee’s winter maintenance operations */2021-01-21T15:57:21Z<p><span dir="auto"><span class="autocomment">Annually conduct an assessment of the permittee’s winter maintenance operations</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>The assessment consists of a series of multiple choice questions that cover all aspects of winter maintenance operations, such as policy, storage, application, and education. Each answer for a question is classified as an Advanced Best Practice (green), Average Best Practice (yellow), or Below Average Practice (red).</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>The assessment consists of a series of multiple choice questions that cover all aspects of winter maintenance operations, such as policy, storage, application, and education. Each answer for a question is classified as an Advanced Best Practice (green), Average Best Practice (yellow), or Below Average Practice (red).</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>The BMP Summary Report indicates how many different types of practices (advanced, best, poor, not applicable) practices you are currently implementing and how many you plan to implement in the future. The BMP list report provides detailed information on current practices. This report could be used to help you prioritize what poor practices you want to work on improving in the coming years.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>The BMP Summary Report indicates how many different types of practices (advanced, best, poor, not applicable) practices you are currently implementing and how many you plan to implement in the future. The BMP list report provides detailed information on current practices. This report could be used to help you prioritize what poor practices you want to work on improving in the coming years.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div><ins style="font-weight: bold; text-decoration: none;">{{alert|Having trouble completing your assessment? Attend a [https://www.pca.state.mn.us/water/smart-salting-training Level 2 training]! Check the training calendar [https://www.pca.state.mn.us/water/smart-salting-training-calendar here]. |alert-info}}</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>Below is an excerpt of an example output from an assessment that was completed with the SSAt and the various reports generated by the tool. The actual report includes responses to questions for all BMPs that are included in the tool. The example includes an assessment of current and future operations for low and high speed roads.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>Below is an excerpt of an example output from an assessment that was completed with the SSAt and the various reports generated by the tool. The actual report includes responses to questions for all BMPs that are included in the tool. The example includes an assessment of current and future operations for low and high speed roads.</div></td></tr>
</table>Aboschhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=49531&oldid=prevAbosch: /* Permit requirements */2020-11-09T15:56:11Z<p><span dir="auto"><span class="autocomment">Permit requirements</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>The [https://stormwater.pca.state.mn.us/index.php?title=Stormwater_Program_for_Municipal_Separate_Storm_Sewer_Systems_(MS4) MS4 permit] contains the following requirements for permittees that have an applicable wasteload allocation (WLA) for chloride.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>The [https://stormwater.pca.state.mn.us/index.php?title=Stormwater_Program_for_Municipal_Separate_Storm_Sewer_Systems_(MS4) MS4 permit] contains the following requirements for permittees that have an applicable wasteload allocation (WLA) for chloride.</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>#Permit item 22.5: If the permittee has an applicable WLA for chloride, the permittee must document the amount of <span title="Deicing typically refers to removal of salt from impervious surfaces, such as roads, driveways, parking lots, and sidewalks. Chemicals, most commonly sodium chloride, are often used for deicing."> '''deicer'''</span> applied each winter maintenance season to all permittee owned/operated surfaces</div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>#Permit item 22.5: If the permittee has an applicable WLA <ins class="diffchange diffchange-inline">where a reduction in pollutant loading is required </ins>for chloride, the permittee must document the amount of <span title="Deicing typically refers to removal of salt from impervious surfaces, such as roads, driveways, parking lots, and sidewalks. Chemicals, most commonly sodium chloride, are often used for deicing."> '''deicer'''</span> applied each winter maintenance season to all permittee owned/operated surfaces</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>#Permit item 22.6: If the permittee has an applicable WLA for chloride, each calendar year the permittee must conduct an assessment of the permittee's winter maintenance operations to reduce the amount of deicing salt applied to permittee owned/operated surfaces and determine current and future opportunities to improve <span title="one of many different structural or non–structural methods used to treat runoff"> '''best management practices'''</span> (BMPs). The permittee may use the [https://stormwater.pca.state.mn.us/index.php?title=Smart_Salting_Assessment_tool_(SSAt) Agency’s Smart Salting Assessment Tool] or other available resources and methods to complete this assessment. </div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>#Permit item 22.6: If the permittee has an applicable WLA <ins class="diffchange diffchange-inline">where a reduction in pollutant loading is required </ins>for chloride, each calendar year the permittee must conduct an assessment of the permittee's winter maintenance operations to reduce the amount of deicing salt applied to permittee owned/operated surfaces and determine current and future opportunities to improve <span title="one of many different structural or non–structural methods used to treat runoff"> '''best management practices'''</span> (BMPs). The permittee may use the [https://stormwater.pca.state.mn.us/index.php?title=Smart_Salting_Assessment_tool_(SSAt) Agency’s Smart Salting Assessment Tool] or other available resources and methods to complete this assessment. </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div> </div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>::The permittee must document the assessment. The assessment may include, but is not limited to:<br></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>::The permittee must document the assessment. The assessment may include, but is not limited to:<br></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>::a. operational changes such as pre-wetting, pre-treating the salt stockpile, increasing plowing prior to deicing, monitoring of road surface temperature, etc.;<br></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>::a. operational changes such as pre-wetting, pre-treating the salt stockpile, increasing plowing prior to deicing, monitoring of road surface temperature, etc.;<br></div></td></tr>
</table>Aboschhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=49530&oldid=prevAbosch at 15:53, 9 November 20202020-11-09T15:53:45Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>[[File:General information page image.png|left|100px|alt=image]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>[[File:General information page image.png|left|100px|alt=image]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>[[File:Statewide chloride impairements.jpg|300px|thumb|right| alt=screenshot of statewide chloride impairments|<font size=3>Map of chloride impairments in Minnesota. For more details on the map click [https://mpca.maps.arcgis.com/apps/<del class="diffchange diffchange-inline">OnePane/basicviewer</del>/index.html?<del class="diffchange diffchange-inline">appid</del>=<del class="diffchange diffchange-inline">beed825528cf4a6a95256291ae903e2c </del>here]</font size>.]]</div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>[[File:Statewide chloride impairements.jpg|300px|thumb|right| alt=screenshot of statewide chloride impairments|<font size=3>Map of chloride impairments in Minnesota. For more details on the map click [https://mpca.maps.arcgis.com/apps/<ins class="diffchange diffchange-inline">webappviewer</ins>/index.html?<ins class="diffchange diffchange-inline">id</ins>=<ins class="diffchange diffchange-inline">f5baf4d28e2f43ba804938136e1bd534 </ins>here]</font size>.]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>[[File:MN Metro chloride impairments map.jpg|300px|thumb|right| alt=screenshot of metro chloride impairments|<font size=3>Map of chloride impairments in the metro area. For more details on the map click [https://mpca.maps.arcgis.com/apps/webappviewer/index.html?id=f5baf4d28e2f43ba804938136e1bd534 here]</font size>.]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>[[File:MN Metro chloride impairments map.jpg|300px|thumb|right| alt=screenshot of metro chloride impairments|<font size=3>Map of chloride impairments in the metro area. For more details on the map click [https://mpca.maps.arcgis.com/apps/webappviewer/index.html?id=f5baf4d28e2f43ba804938136e1bd534 here]</font size>.]]</div></td></tr>
</table>Aboschhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=49529&oldid=prevAbosch at 15:50, 9 November 20202020-11-09T15:50:36Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 15:50, 9 November 2020</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>[[File:Statewide chloride impairements.jpg|300px|thumb|right| alt=screenshot of statewide chloride impairments|<font size=3>Map of chloride impairments in Minnesota. For more details on the map click [https://mpca.maps.arcgis.com/apps/OnePane/basicviewer/index.html?appid=beed825528cf4a6a95256291ae903e2c here]</font size>.]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>[[File:Statewide chloride impairements.jpg|300px|thumb|right| alt=screenshot of statewide chloride impairments|<font size=3>Map of chloride impairments in Minnesota. For more details on the map click [https://mpca.maps.arcgis.com/apps/OnePane/basicviewer/index.html?appid=beed825528cf4a6a95256291ae903e2c here]</font size>.]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>[[File:MN Metro chloride impairments map.jpg|300px|thumb|right| alt=screenshot of metro chloride impairments|<font size=3>Map of chloride impairments in the metro area. For more details on the map click [https://mpca.maps.arcgis.com/apps/<del class="diffchange diffchange-inline">OnePane/basicviewer</del>/index.html?<del class="diffchange diffchange-inline">appid</del>=<del class="diffchange diffchange-inline">beed825528cf4a6a95256291ae903e2c </del>here]</font size>.]]</div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>[[File:MN Metro chloride impairments map.jpg|300px|thumb|right| alt=screenshot of metro chloride impairments|<font size=3>Map of chloride impairments in the metro area. For more details on the map click [https://mpca.maps.arcgis.com/apps/<ins class="diffchange diffchange-inline">webappviewer</ins>/index.html?<ins class="diffchange diffchange-inline">id</ins>=<ins class="diffchange diffchange-inline">f5baf4d28e2f43ba804938136e1bd534 </ins>here]</font size>.]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>This page provides guidance for <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) permittees who have permit requirements for chloride <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily load''']</span> <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span>.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>This page provides guidance for <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) permittees who have permit requirements for chloride <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily load''']</span> <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span>.</div></td></tr>
</table>Aboschhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=49528&oldid=prevAbosch: /* Chloride Total Maximum Daily Loads (TMDLs) */2020-11-09T15:49:12Z<p><span dir="auto"><span class="autocomment">Chloride Total Maximum Daily Loads (TMDLs)</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 15:49, 9 November 2020</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>The EPA has approved 37 <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the [https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/water/tmdl/nine-mile-creek-turbidity-impaired-biota-and-chloride-tmdl-project Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/water/tmdl/shingle-creek-chloride-tmdl-project Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information.</div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>The EPA has approved 37 <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the <ins class="diffchange diffchange-inline">[https://www.pca.state.mn.us/sites/default/files/wq-iw7-49e.pdf Lower Minnesota River Watershed TMDL], </ins>[https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/water/tmdl/nine-mile-creek-turbidity-impaired-biota-and-chloride-tmdl-project Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/water/tmdl/shingle-creek-chloride-tmdl-project Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td></tr>
</table>Aboschhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=49527&oldid=prevAbosch: /* Chloride Total Maximum Daily Loads (TMDLs) */2020-11-09T15:37:00Z<p><span dir="auto"><span class="autocomment">Chloride Total Maximum Daily Loads (TMDLs)</span></span></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 15:37, 9 November 2020</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l10" >Line 10:</td>
<td colspan="2" class="diff-lineno">Line 10:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>The EPA has approved <del class="diffchange diffchange-inline">40 </del><span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the [https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/water/tmdl/nine-mile-creek-turbidity-impaired-biota-and-chloride-tmdl-project Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/water/tmdl/shingle-creek-chloride-tmdl-project Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information.</div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>The EPA has approved <ins class="diffchange diffchange-inline">37 </ins><span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload allocations'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the [https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/water/tmdl/nine-mile-creek-turbidity-impaired-biota-and-chloride-tmdl-project Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/water/tmdl/shingle-creek-chloride-tmdl-project Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td></tr>
</table>Aboschhttps://stormwater.pca.state.mn.us/index.php?title=Guidance_for_meeting_chloride_TMDL_MS4_permit_requirements&diff=48999&oldid=prevMtrojan: /* Chloride Total Maximum Daily Loads (TMDLs) */2020-05-10T20:36:27Z<p><span dir="auto"><span class="autocomment">Chloride Total Maximum Daily Loads (TMDLs)</span></span></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 20:36, 10 May 2020</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l10" >Line 10:</td>
<td colspan="2" class="diff-lineno">Line 10:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>There are currently 40 lakes and streams in the Twin Cities Metro Area that are <span title="Impaired waters are bodies of water that exceed the limits of one or more parameters for surface water quality"> [https://stormwater.pca.state.mn.us/index.php?title=Special_Waters_and_Impaired_Waters '''impaired''']</span> by chloride. There are an additional 10 lakes and streams that are impaired by chloride in greater Minnesota. See the [https://www.pca.state.mn.us/water/chloride-salts MPCA’s chloride webpage] for more information on the sources of chloride, environmental impacts, and opportunities for your community to reduce salt. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; 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;"><div>The EPA has approved 40 <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload <del class="diffchange diffchange-inline">allocation</del>'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the [https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/water/tmdl/nine-mile-creek-turbidity-impaired-biota-and-chloride-tmdl-project Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/water/tmdl/shingle-creek-chloride-tmdl-project Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information. </div></td><td class='diff-marker'>+</td><td style="color: #222; 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;"><div>The EPA has approved 40 <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still meet water quality standards"> [https://stormwater.pca.state.mn.us/index.php?title=Total_Maximum_Daily_Loads_(TMDLs) '''total maximum daily loads''']</span> (TMDLs) that include <span title="A municipal separate storm sewer system (MS4) is a means of transportation, individually or in a system, (e.g. roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that are: owned or operated by a public entity (e.g. cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) with jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes. This includes special districts under State law (sewer, flood control, or drainage districts, etc.), an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act; designed or used for collecting or transporting stormwater; not a combined sewer; and not part of a publicly owned treatment works."> '''MS4'''</span> (Municipal Separate Storm Sewer System) <span title="the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution"> '''wasteload <ins class="diffchange diffchange-inline">allocations</ins>'''</span> (WLAs) for chloride. Click [https://www.pca.state.mn.us/water/minnesotas-impaired-waters-list here] to link to MPCA's impaired waters website. A map illustrating U.S. EPA-approved listings for chloride is shown on the right. The TMDLs were developed as part of the [https://www.pca.state.mn.us/sites/default/files/wq-iw11-06e.pdf Twin Cities Area Metro Chloride TMDL], [https://www.pca.state.mn.us/water/tmdl/nine-mile-creek-turbidity-impaired-biota-and-chloride-tmdl-project Ninemile Creek TMDL], and the [https://www.pca.state.mn.us/water/tmdl/shingle-creek-chloride-tmdl-project Shingle Creek TMDL]. See the [https://www.pca.state.mn.us/water/statewide-chloride-resources statewide chloride resources page] for more information.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"><div>==Permit requirements==</div></td></tr>
</table>Mtrojan