<html> <head> <title>Rule 74:56:05:10 Tier 2 assessments.</title> <META NAME="Keywords" Content="Administrative Rules 74:56:05:10"> <META NAME="Description" Content="Administrative Rules 74:56:05:10 Tier 2 assessments."> <meta name=Generator content="Microsoft Office HTML Filter 2.0"> <meta http-equiv=Content-Type content="text/html; charset=windows-1252"> <meta name=Originator content="Microsoft Word 10"> <style> <!-- --> </style> </head> <body lang=EN-US> <div> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>74:56:05:10.&nbsp;&nbsp;Tier 2 assessments.</b> A Tier 2 assessment is a risk-based analysis applying the direct exposure values established under a Tier 1 assessment at the point or points of exposure developed for a specific site and development of values for potential indirect exposure pathways at the point or points of exposure based on site-specific conditions. As part of a Tier 2 assessment, the responsible person must define the vertical and horizontal extent of soil contamination exceeding Tier 1 action levels and groundwater exceeding South Dakota groundwater quality standards.</font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Source:</b> 22 SDR 86, effective December 18, 1995; transferred from §&nbsp;74:03:33:10, July 1, 1996.</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>General Authority:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-93">34A-2-93</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-99">34A-2-99</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-101">34A-2-101</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-12-7">34A-12-7.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Law Implemented:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-99">34A-2-99</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2-101">34A-2-101</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-12-10">34A-12-10.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Cross-References:</b> Tier 1 action levels -- Criteria for calculation, §&nbsp;74:56:05:07; Groundwater quality standards, ch 74:54:01.</font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </div> </body> </html>