Difference between revisions of "List of Approved TMDLs with MS4 WLAs"
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<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> (TMDL) <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) approved by the U.S. Environmental Protection Agency (EPA) prior to the November 16, 2020 issuance date of the <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."> [https://www.pca.state.mn.us/water/2020-ms4-general-permit '''MS4'''</span> (Municipal Separate Storm Sewer System) General Permit (permit)] must be addressed by permittees in their Stormwater Pollution Prevention Program (SWPPP) Document, which includes the [https://stormwater.pca.state.mn.us/index.php?title=2020_General_MS4_Permit_TMDL_Application TMDL Application Form]. The [https://www.epa.gov/laws-regulations/summary-clean-water-act Clean Water Act] requires the Minnesota Pollution Control Agency (MPCA) to include, in all <span title="The National Pollutant Discharge Elimination System (NPDES) addresses water pollution by regulating point sources that discharge pollutants to Waters of the United States (WOTUS)"> '''National Pollutant Discharge Elimination System'''</span> (NPDES) permits, discharge requirements that are consistent with requirements established in TMDLs. The permit requires applicants to submit information at the time of application on applicable WLAs and document how they will make progress on performance-based WLAs ([https://stormwater.pca.state.mn.us/index.php?title=Bacteria_in_stormwater bacteria], chloride, temperature), demonstrate they are currently meeting their numerical WLAs (oxygen demand, nitrate, [https://stormwater.pca.state.mn.us/index.php?title=Phosphorus total phosphorus] or [https://stormwater.pca.state.mn.us/index.php?title=Total_Suspended_Solids_(TSS)_in_stormwater total suspended solids]), or develop a compliance schedule for those numerical WLAs that are not being met. | <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> (TMDL) <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) approved by the U.S. Environmental Protection Agency (EPA) prior to the November 16, 2020 issuance date of the <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."> [https://www.pca.state.mn.us/water/2020-ms4-general-permit '''MS4'''</span> (Municipal Separate Storm Sewer System) General Permit (permit)] must be addressed by permittees in their Stormwater Pollution Prevention Program (SWPPP) Document, which includes the [https://stormwater.pca.state.mn.us/index.php?title=2020_General_MS4_Permit_TMDL_Application TMDL Application Form]. The [https://www.epa.gov/laws-regulations/summary-clean-water-act Clean Water Act] requires the Minnesota Pollution Control Agency (MPCA) to include, in all <span title="The National Pollutant Discharge Elimination System (NPDES) addresses water pollution by regulating point sources that discharge pollutants to Waters of the United States (WOTUS)"> '''National Pollutant Discharge Elimination System'''</span> (NPDES) permits, discharge requirements that are consistent with requirements established in TMDLs. The permit requires applicants to submit information at the time of application on applicable WLAs and document how they will make progress on performance-based WLAs ([https://stormwater.pca.state.mn.us/index.php?title=Bacteria_in_stormwater bacteria], chloride, temperature), demonstrate they are currently meeting their numerical WLAs (oxygen demand, nitrate, [https://stormwater.pca.state.mn.us/index.php?title=Phosphorus total phosphorus] or [https://stormwater.pca.state.mn.us/index.php?title=Total_Suspended_Solids_(TSS)_in_stormwater total suspended solids]), or develop a compliance schedule for those numerical WLAs that are not being met. | ||
| − | The '''Municipal Stormwater Permit TMDL WLAs List''' includes all EPA approved TMDL WLAs for permitted MS4s. Only if you are assigned an applicable WLA in a TMDL that was approved by EPA prior to the issuance date of the new MS4 permit are you required to meet TMDL WLAs permit requirements. Here is a link to MS4 permittees without applicable WLAs | + | The '''Municipal Stormwater Permit TMDL WLAs List''' includes all EPA approved TMDL WLAs for permitted MS4s. Only if you are assigned an applicable WLA in a TMDL that was approved by EPA prior to the issuance date of the new MS4 permit are you required to meet TMDL WLAs permit requirements. Here is a link to MS4 permittees [https://stormwater.pca.state.mn.us/index.php?title=MS4s_with_no_TMDL_applications without applicable WLAs]. Note: this list is subject to change if additional WLAs are approved by EPA prior to November 16, 2020. |
Please click here to download the Municipal Stormwater TMDL WLAs List (updated November 2020): [[file:wq-strm4-93b.xlsx]] | Please click here to download the Municipal Stormwater TMDL WLAs List (updated November 2020): [[file:wq-strm4-93b.xlsx]] | ||
Revision as of 19:55, 13 November 2020
Total Maximum Daily Load (TMDL) Wasteload Allocations (WLAs) approved by the U.S. Environmental Protection Agency (EPA) prior to the November 16, 2020 issuance date of the MS4 (Municipal Separate Storm Sewer System) General Permit (permit) must be addressed by permittees in their Stormwater Pollution Prevention Program (SWPPP) Document, which includes the TMDL Application Form. The Clean Water Act requires the Minnesota Pollution Control Agency (MPCA) to include, in all National Pollutant Discharge Elimination System (NPDES) permits, discharge requirements that are consistent with requirements established in TMDLs. The permit requires applicants to submit information at the time of application on applicable WLAs and document how they will make progress on performance-based WLAs (bacteria, chloride, temperature), demonstrate they are currently meeting their numerical WLAs (oxygen demand, nitrate, total phosphorus or total suspended solids), or develop a compliance schedule for those numerical WLAs that are not being met.
The Municipal Stormwater Permit TMDL WLAs List includes all EPA approved TMDL WLAs for permitted MS4s. Only if you are assigned an applicable WLA in a TMDL that was approved by EPA prior to the issuance date of the new MS4 permit are you required to meet TMDL WLAs permit requirements. Here is a link to MS4 permittees without applicable WLAs. Note: this list is subject to change if additional WLAs are approved by EPA prior to November 16, 2020.
Please click here to download the Municipal Stormwater TMDL WLAs List (updated November 2020): File:Wq-strm4-93b.xlsx