<html> <head> <title>Rule 74:02:04:32 Hard rock well construction.</title> <META NAME="Keywords" Content="Administrative Rules 74:02:04:32"> <META NAME="Description" Content="Administrative Rules 74:02:04:32 Hard rock well construction."> <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>74:02:04:32.&nbsp;&nbsp;Hard rock well construction.</b> Hard rock wells are defined as wells that do not require casing throughout their entire depth. Hard rock is defined as Precambrian aged rock and igneous or metamorphic rock. The well casing of hard rock wells shall be pressure grouted with cement grout from the bottom of the casing to the ground surface or to the bottom of a pitless adapter or pitless unit, if used. The minimum allowable casing length is 20 feet. If a pitless adapter or pitless unit is used, at least 20 feet of casing must be installed below the pitless adapter or pitless unit.</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; See Appendix E at the end of this chapter.</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> 12 SDR 50, effective September 29, 1985; 13 SDR 129, 13 SDR 141, effective July&nbsp;1, 1987; 18 SDR 224, effective July 16, 1992.</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=46-2-5">46-2-5</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-6-20">46-6-20</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-6-27">46-6-27.</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=46-6-6.1">46-6-6.1</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-6-10">46-6-10</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-6-20">46-6-20</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-6-27">46-6-27.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </div> </body> </html>