<html> <head> <title>Rule 74:27:12:17 Liner systems.</title> <META NAME="Keywords" Content="Administrative Rules 74:27:12:17"> <META NAME="Description" Content="Administrative Rules 74:27:12:17 Liner systems."> <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>74:27:12:17.&nbsp;&nbsp;Liner systems.</b> An applicant shall incorporate a composite liner system into the design of the MSWLFs unless the facility meets the small-town exemption criteria specified in §&nbsp;74:27:12:25. The secretary may require liner systems for other disposal facilities when the wastes have a potential to pollute groundwater or surface water. An alternative liner system may be approved by the secretary if the applicant can demonstrate compliance with the design criteria specified in §&nbsp;74:27:12:02. Liner systems must be constructed of materials that have the strength, thickness, and chemical properties needed to prevent failure due to pressure gradients, physical contact with the waste or leachate to which they are exposed, climatic conditions, stress of installation, and stress of daily operation. The board or secretary shall determine liner configuration and components case by case.</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; Soil liner components must, at a minimum:</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; (1)&nbsp;&nbsp;Have a recompacted maximum coefficient of permeability of 1 x 10</font><sup><font size=4 face="Times New Roman">-7</font></sup><font size=3 face="Times New Roman"> centimeters per second;</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; (2)&nbsp;&nbsp;Have a two-foot compacted thickness placed in six-inch scarified and compacted lifts with no materials greater than three inches in diameter;</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; (3)&nbsp;&nbsp;Meet compaction specifications equivalent to 95 percent standard proctor density with a moisture content of 0</font> <font size=3 face="Times New Roman">-</font> <font size=3 face="Times New Roman">6 percent wet of optimum moisture;</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; (4)&nbsp;&nbsp;Have a minimum bottom slope of 2 percent;</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; (5)&nbsp;&nbsp;Have a twelve-inch protective drainage layer with a permeability greater than 1 x 10</font><sup><font size=4 face="Times New Roman">-3</font></sup><font size=3 face="Times New Roman"> centimeters per second placed over the soil liner;</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; The secretary may require a test pad to document field permeability. The applicant shall use field testing methods approved by the secretary and shall take an undisturbed sample for laboratory comparison of field values.</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; Flexible membrane liners (FMLs) must, at a minimum, be compatible with leachate, have a 60 mil thickness, have a life expectancy longer than the life of the facility, and be installed on a compacted soil liner of at least 2 percent slope. Installation of FMLs must be consistent with the manufacturer's specifications and recommendations.</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>