<html> <head> <title>Rule 74:51:01:24 Modification of criteria for specific sites.</title> <META NAME="Keywords" Content="Administrative Rules 74:51:01:24"> <META NAME="Description" Content="Administrative Rules 74:51:01:24 Modification of criteria for specific sites."> <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;} @font-face {font-family:Times; panose-1:2 2 6 3 5 4 5 2 3 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; font-size:10.0pt; font-family:"Times",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 1.25in 1.0in 1.25in;} 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 style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>74:51:01:24.&nbsp;&nbsp;Modification of criteria for specific sites.</b> Criteria established in &#167;&#167;&nbsp;74:51:01:31, 74:51:01:32, and 74:51:01:44 </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>through</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> 74:51:01:54, inclusive, and in &#167;&nbsp;74:51:01:56 may be modified to reflect local conditions through determination of site-specific criteria for toxic pollutants in a segment. Modification of criteria must incorporate analyses of physical, chemical, and biological conditions of the receiving waters to assure maintenance of the assigned beneficial use. Actual effluents or effluent simulations may be evaluated in a toxicity testing program conducted under environmental conditions similar to the discharge site in the receiving waters. Analytical procedures, calculation procedures used to measure or demonstrate the toxicological significance of a pollutant, and numerical criteria may be modified by the board after opportunity for public review and comment.</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; All data necessary to defend the proposed modification of criteria are the responsibility of the person or entity requesting the modification. Methods used to develop site-specific criteria must be approved by the secretary and shall include methods to evaluate effects of bioaccumulative pollutants where appropriate. The <b>Water Quality Standards Handbook</b>, </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>2017</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>, may be used as guidance in developing methods.</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Source:</b> SL 1975, ch 16, &#167;&nbsp;1; transferred from &#167;&nbsp;34:04:02:15, 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; 19 SDR 111, effective January 31, 1993; transferred from &#167;&nbsp;74:03:02:15, July 1, 1996; 24 SDR 10, effective July 20, 1997; 31 SDR 29, effective September 13, 2004</span><span style='font-size: 12.0pt;font-family:"Times New Roman",serif'>; 47 SDR 110, effective April 27, 2021</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>.</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>General Authority:</b> SDCL </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>34A-2-10, </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>34A-2-11, 34A-2-93.</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&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></span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Reference:</b> <b>Water Quality Standards Handbook</b>, </span><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>2017</span><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>, U.S. Environmental Protection Agency, Office of Water Regulations and Standards. Copies are available from the U.S. Environmental Protection Agency, Region VIII, Denver, Colorado 80203. There is no charge for this document.</span><span style='font-size:12.0pt;font-family: "Times New Roman",serif'> The document is also available at:</span></p> <p class=MsoNormal style='text-align:justify'><a href="https://www.epa.gov/wqs-tech/water-quality-standards-handbook"><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>https://www.epa.gov/wqs-tech/water-quality-standards-handbook</span></a><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>.</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Cross-Reference:</b> Antidegradation requirements, &#167;&#167;&nbsp;74:51:01:34 </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>through</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'> 74:51:01:39, inclusive.</span></p> <p class=MsoNormal style='text-align:justify'><span style='font-size:12.0pt; font-family:"Times New Roman",serif'>&nbsp;</span></p> </div> </body> </html>