<html> <head> <title>Rule 74:27:12:05 Hydrogeologic evaluation.</title> <META NAME="Keywords" Content="Administrative Rules 74:27:12:05"> <META NAME="Description" Content="Administrative Rules 74:27:12:05 Hydrogeologic evaluation."> <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>74:27:12:05.&nbsp;&nbsp;Hydrogeologic evaluation.</b> The applicant shall conduct a hydrogeologic evaluation at or near the site to determine, at a minimum, the groundwater flow direction, gradient, and ambient quality. Well construction must conform to the requirements of subdivision 74:54:02:06(9)(f). The applicant shall determine ambient groundwater quality before permit approval. The secretary shall approve the sampling parameters. Sampling results shall be compared to the groundwater quality standards of §§&nbsp;74:54:01:04 and 74:54:01:05.</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; Sampling and analytical techniques must conform to the requirements of §&nbsp;74:54:01:06. Groundwater level measurements and water quality analyses of existing wells may also be used in determining the hydrogeologic conditions at the site.</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> 17 SDR 8, effective July 26, 1990; 19 SDR 186, effective June 10, 1993.</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-6-1.6">34A-6-1.6.</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-6-1.6">34A-6-1.6.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </div> </body> </html>