View source for Total Maximum Daily Loads (TMDLs) ← Total Maximum Daily Loads (TMDLs)

Total Maximum Daily Loads (TMDLs)

Total Maximum Daily Loads (TMDLs) are EPA approved amounts of pollutant loading that can occur and have a water body meet water quality standards.  This page is collection of links and resources to better understand, and meet, TMDL requirements.

[[file:Riverconfluence.jpg|300 px|thumb|alt=image of Miss  and St Croix rivers confluence|<font size=3>Confluence of the St. Croix and Mississippi rivers. Note the St. Croix River is not impaired for sediment, while the Mississippi River is impaired.]]</font size>

==TMDL MS4 permit guidance==
*[[Guidance for meeting chloride TMDL MS4 permit requirements]]
*[[Guidance for meeting bacteria TMDL MS4 permit requirements]]
*[[Guidance for meeting dissolved oxygen or oxygen demand TMDL MS4 permit requirements]]
*[[Guidance for meeting temperature TMDL MS4 permit requirements]]
*[[Guidance for categorical TMDLs]]
*[[List of Approved TMDLs with MS4 WLAs (updated November 2019)]]
*[[Forms, guidance, and resources for completing the TMDL annual report form]]
*[[Baseline year]]
*[[Summary of TMDL requirements in stormwater permits]]
*[[Interpreting wasteload allocations based on flow/load duration curves]]

===TMDL toolkit for MS4 permit compliance===
[[File:Quick guide.png|200px|thumb|alt=image|<font size=3>[https://stormwater.pca.state.mn.us/index.php?title=Quick_guides_for_using_models_to_meet_MS4_TMDL_permit_requirements Access a quick guide] for using models to meet MS4 TMDL requirements</font size>]]

*[[Overview of models used to meet MS4 TMDL permit requirements]]
*[[Recommendations and guidance for utilizing P8 to meet TMDL permit requirements]]
**[[Case study for using P8 to meet TMDL permit requirements]]
*[[Recommendations and guidance for utilizing WINSLAMM to meet TMDL permit requirements]]
**[[Case study for using WINSLAMM to meet TMDL permit requirements]]
*[[Recommendations and guidance for utilizing the MIDS calculator to meet TMDL permit requirements]]
**[[MIDS calculator]]
**[[Case study for using the MIDS calculator to meet TMDL permit requirements]]
*[[Recommendations and guidance for utilizing the MPCA Simple Estimator to meet TMDL permit requirements]]
**[[Guidance and examples for using the MPCA Estimator]]
**[[Case study for using the MPCA Simple Estimator to meet TMDL permit requirements]]
*[[Recommendations and guidance for utilizing monitoring to meet TMDL permit requirements]]
**[[Recommendations and guidance for utilizing lake monitoring to meet TMDL permit requirements]]
**[[Recommendations and guidance for utilizing stream monitoring to meet TMDL permit requirements]]
**[[Recommendations and guidance for utilizing major stormwater outfall monitoring to meet TMDL permit requirements]]
**[[Recommendations and guidance for utilizing stormwater best management practice monitoring to meet TMDL permit requirements]]
*[[Quick guides for using models to meet MS4 TMDL permit requirements]]
*[[Case studies for monitoring to meet TMDL permit requirements]]

==TMDL guidance and general information==
*[[Overview of TMDLs]]
*[http://www.pca.state.mn.us/index.php/view-document.html?gid=19465 Addressing TMDL Requirements in MS4 General Permit Applications and Stormwater Pollution Prevention Program Documents]
*[http://www.pca.state.mn.us/index.php/view-document.html?gid=19456 List of approved TMDLs with MS4 Wasteload Allocations]
*[[MPCA guidance for setting wasteload allocations for regulated stormwater]]
*[[Technical guidance used by MPCA to develop guidelines for setting TMDL WLAs for regulated stormwater]]
*[[Case studies for regulated stormwater issues]]
*[[Guidance on what discharges should be included in the TMDL wasteload allocation for MS4 stormwater]]
*[[Fact sheet on what discharges should be included in the TMDL wasteload allocation for MS4 stormwater]]
*[[Guidance for addressing large watershed TMDL studies]]
*[[Guidance for developing TMDL implementation plans for MS4 stormwater]]
*[[Fact sheet for developing TMDL implementation plans for permitted MS4 stormwater]]
*[[File:Guidance on What Discharges Should be Included in the TMDL Wasteload Allocation for MS4 Stormwater.docx|Guidance on What Discharges Should be Included in the TMDL Wasteload Allocation for MS4 Stormwater]] - August 2010
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*[[Construction activity by county]]
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*Training modules
**Overview of Stormwater Effects on Water Quality - [[File:Wq-strm7-81.pdf]]
**Construction, Industrial & Municipal Stormwater Permits & SWPPPs - [[File:Wq-strm7-82.pdf]]
**The TMDL Process as it Relates to Stormwater - [[File:Wq-strm7-83a.pdf]]
**TMDL Stormwater Language - [[File:Wq-strm7-84a.pdf]]
**Setting Wasteload Allocationsin a TMDL - [[File:Wq-strm7-84b.pdf]]
**Setting Implementation Strategies in the TMDL Implementation Plan - [[File:Wq-strm7-84c.pdf]]
**Meeting Requirements of a TMDL - [[File:Wq-strm7-85a.pdf]]

==Information received from MS4 permittees==
*[[Summary of data received from permittees on MS4 TMDL permit reporting forms]]

==Links and other resources==
*[[Links for TMDLs]] - '''we should get rid of this page'''
*Visit the [https://www.pca.state.mn.us/water/total-maximum-daily-load-tmdl-projects#draft-pending-projects-990aee4d MPCA TMDL Project page] for information on specific projects across the state
*[[Total Suspended Solids (TSS) in stormwater|Total Suspended Solids (TSS)]]
*[[Phosphorus]]
*[[Bacteria in stormwater]]
*[[Chloride in stormwater]]
*[https://stormwater.pca.state.mn.us/index.php?title=Protection_and_restoration_of_receiving_waters Protection and restoration of receiving waters]








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[[file:Riverconfluence.jpg|400 px|thumb|alt=image Miss and St Croix confluence]]

*[[Overview of TMDLs]]
*[[Summary of TMDL requirements in stormwater permits]]
*[[Forms and guidance for TMDLs]]
*[[Summary of data received from permittees on MS4 TMDL permit reporting forms]]
*[[Links for TMDLs]]
*Visit the [https://www.pca.state.mn.us/water/total-maximum-daily-load-tmdl-projects#draft-pending-projects-990aee4d MPCA TMDL Project page] for information on specific projects across the state
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