Difference between revisions of "Special Waters and Impaired Waters"
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==Special Waters and Impaired Waters== | ==Special Waters and Impaired Waters== | ||
| − | + | NPDES/SDS permits for construction sites near specially-protected and impaired waters require additional controls, conditions or an individual permit: | |
*Sites that discharge near waters with qualities that warrant extra protection (special waters) must use additional best management practices and enhanced runoff controls. | *Sites that discharge near waters with qualities that warrant extra protection (special waters) must use additional best management practices and enhanced runoff controls. | ||
| − | *Sites that discharge | + | *Sites within one mile (aerial radius measurement) of and that discharge to a water impaired for phosphorous, turbidity, dissolved oxygen, and biotic impairment, must meet [http://stormwater.pca.state.mn.us/index.php/APPENDIX_A#B._REQUIREMENTS_FOR_DISCHARGES_TO_SPECIAL_WATERS_AND_IMPAIRED_WATERS special conditions] (Appendix A, Section B.10). |
*Sites that discharge to calcareous fens, need a letter of approval from the Department of Natural Resources. | *Sites that discharge to calcareous fens, need a letter of approval from the Department of Natural Resources. | ||
| − | + | The MPCA has several documents and an interactive map called Special Waters Search to help project planners identify those waters near their site that may require extra protections or an individual permit. The specific requirements are outlined in the General Stormwater Permit. | |
*[[Special Waters List]] (wq-strm1-05) | *[[Special Waters List]] (wq-strm1-05) | ||
*[[Known Calcareous Fens List]] (wq-strm1-06) | *[[Known Calcareous Fens List]] (wq-strm1-06) | ||
*General Information about [http://www.pca.state.mn.us/index.php/water/water-types-and-programs/minnesotas-impaired-waters-and-tmdls/minnesotas-impaired-waters-and-total-maximum-daily-loads-tmdls.html Impaired Waters and the Current TMDL List] of Impaired Waters | *General Information about [http://www.pca.state.mn.us/index.php/water/water-types-and-programs/minnesotas-impaired-waters-and-tmdls/minnesotas-impaired-waters-and-total-maximum-daily-loads-tmdls.html Impaired Waters and the Current TMDL List] of Impaired Waters | ||
*[http://pca-gis02.pca.state.mn.us/CSW/index.html Special and Impaired Waters Search]: This is an electronic map tool using Geographic Information Systems (GIS) technology. Find the construction site location, draw the site boundaries and create a list of special waters. | *[http://pca-gis02.pca.state.mn.us/CSW/index.html Special and Impaired Waters Search]: This is an electronic map tool using Geographic Information Systems (GIS) technology. Find the construction site location, draw the site boundaries and create a list of special waters. | ||
Revision as of 12:39, 9 June 2016
Special Waters and Impaired Waters
NPDES/SDS permits for construction sites near specially-protected and impaired waters require additional controls, conditions or an individual permit:
- Sites that discharge near waters with qualities that warrant extra protection (special waters) must use additional best management practices and enhanced runoff controls.
- Sites within one mile (aerial radius measurement) of and that discharge to a water impaired for phosphorous, turbidity, dissolved oxygen, and biotic impairment, must meet special conditions (Appendix A, Section B.10).
- Sites that discharge to calcareous fens, need a letter of approval from the Department of Natural Resources.
The MPCA has several documents and an interactive map called Special Waters Search to help project planners identify those waters near their site that may require extra protections or an individual permit. The specific requirements are outlined in the General Stormwater Permit.
- Special Waters List (wq-strm1-05)
- Known Calcareous Fens List (wq-strm1-06)
- General Information about Impaired Waters and the Current TMDL List of Impaired Waters
- Special and Impaired Waters Search: This is an electronic map tool using Geographic Information Systems (GIS) technology. Find the construction site location, draw the site boundaries and create a list of special waters.