<html> <head> <title>Rule 74:51:01:55 Criteria for toxic pollutants.</title> <META NAME="Keywords" Content="Administrative Rules 74:51:01:55"> <META NAME="Description" Content="Administrative Rules 74:51:01:55 Criteria for toxic pollutants."> <meta http-equiv=Content-Type content="text/html; charset=windows-1252"> <meta name=Generator content="Microsoft Word 15 (filtered)"> <style> <!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; text-align:justify; font-size:12.0pt; font-family:"Times New Roman",serif;} a:link, span.MsoHyperlink {color:blue; text-decoration:underline;} .MsoChpDefault {font-size:10.0pt;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --> </style> </head> <body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'> <div class=WordSection1> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>74:51:01:55.&nbsp;&nbsp;Criteria for toxic pollutants.</b> Toxic pollutants at levels which are or may become injurious to public health, safety, or welfare; plant, aquatic, and animal life; or the existing or designated uses of waters may not be present in the surface waters of the state. The toxic pollutants to which this section applies are the priority pollutants and chemicals in 40 C.F.R. Part 131 (July 1, 2020) and any other toxic pollutants or substances that produce nuisance aquatic life in concentrations that impair an existing or designated use or create a human health problem as prohibited in &#167;&nbsp;74:51:01:09, or that will adversely impact the structure and function of indigenous or intentionally introduced aquatic communities as prohibited in &#167;&nbsp;74:51:01:12. Appendix B at the end of this chapter lists the priority pollutants and chemicals for which specific numerical criteria have been adopted by the board.</p> <p class=MsoNormal>&nbsp;</p> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The levels of toxic pollutants allowed in surface waters shall be determined by the secretary in accordance with the chronic/acute criteria levels specified for human health and aquatic life in the National Recommended Water Quality Criteria and as translated in Appendix B. The secretary shall use a one-in-a-million (10<sup>-6</sup>) risk level when determining applicable human health criteria.</p> <p class=MsoNormal>&nbsp;</p> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Upon written request, the board may determine allowable levels of toxic pollutants in surface waters of the state in accordance with &#167;&#167;&nbsp;74:51:01:23 or 74:51:01:24, after opportunity for public review and comment. If a numerical criterion has been established for a toxic pollutant in &#167;&#167;&nbsp;74:51:01:31, 74:51:01:32, and 74:51:01:44 through 74:51:01:54, inclusive, and in &#167;&nbsp;74:51:01:56, the provisions of this section do not apply to that substance. Toxic pollutants identified in and allowed by &#167;&#167;&nbsp;74:51:01:58 and 74:51:01:59 for water resource enhancement or restoration projects are exempt from the provisions of this section.</p> <p class=MsoNormal>&nbsp;</p> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Source:</b> SL 1975, ch 16, &#167; 1; transferred from &#167;&nbsp;34:04:02:14, effective July 1, 1979; 10 SDR 145, effective July 4, 1984; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 14 SDR 86, effective December 24, 1987; 16 SDR 196, effective May 23, 1990; 18 SDR 128, effective February 11, 1992; 19 SDR 111, effective January 31, 1993; transferred from &#167;&nbsp;74:03:02:14, July 1, 1996; 24 SDR 10, effective July 20, 1997; 25 SDR 98, effective January 27, 1999; 31 SDR 29, effective September 13, 2004; 35 SDR 253, effective May 12, 2009; 41 SDR 109, effective January 12, 2015; 47 SDR 110, effective April 27, 2021.</p> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>General Authority:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-10">34A-2-10</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-11">34A-2-11</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-93">34A-2-93.</A></p> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Law Implemented:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-10">34A-2-10</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-11">34A-2-11.</A></p> <p class=MsoNormal>&nbsp;</p> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Reference:</b> <b>National Recommended Water Quality Criteria:</b> (October 2020) The priority pollutants can be found on the United States Environmental Protection Agency's website at <a href="https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table">https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table</a> and <a href="https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table">https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table</a>.</p> <p class=MsoNormal>&nbsp;</p> <p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Cross-References: </b>Toxic pollutant criteria, Appendix B, ch 74:51:01; Protection of wetlands as waters of the state, &#167;&nbsp;74:51:01:11.</p> <p class=MsoNormal>&nbsp;</p> </div> </body> </html>