Laserfiche WebLink
4; <br />1,y,3Yt Ss <br />program with typical "default" data for emission estimates. The second tier involves <br />sampling the gas at the landfill to determine its NMOC contact. The third tier method <br />entails installing a field testing program to determine site-specific parameters for use in <br />the EPA model. If the landfill exceeds the threshold NMOC emissions level of 167 tons <br />per year, the owner operator must install an active gas collection and control system. <br />The gas control system must be able to reduce the quality of NMOCs in the landfill gas <br />stream by 98 percent by weight. The type of gas management/odor control system <br />installed at closure will be determined by the amount and composition of the landfill <br />gas generated. Operating procedures will be provided when the gas management <br />system is installed. See "Landfill Gas Monitoring", Section 17-701.500(9) of this <br />document. <br />Leachate Management <br />w <br />Leachate is collected over the liner of Segment 2 by a leachate collection and <br />transmission system. The leachate is conveyed to a pump station/leachate sump <br />located at the northwest corner of Segment 2. Leachate from the infill sideslope liner <br />will be minimized by stormwater diversion techniques as discussed in Section 62- <br />701.500(10) of the operations plan. The stormwater section is expanded to include <br />stormwater diversion procedures for the infill segment. <br />0 <br />The leachate which is collected by the sideslope liner and by the horizontal expansion <br />will be collected by one of two 8 -inch collection laterals, located over the composite <br />liner. The leachate collection laterals are sloped south to north, and connect to an 8 -inch <br />perforated header just inside the north berm of the horizontal expansion. A single pipe <br />penetration through the north berm allows collected leachate to flow to a new manhole <br />(Manhole No. 11). From manhole 11, the leachate flows through a 10 -inch pipe to the <br />existing pump station. Leachate quantities are expected to increase with the horizontal <br />F-9 <br />1i SS <br />1741717 <br />`i•I <br />ms.,, .'- ..1: �+ .�f� Jil`_:.,, .yrr <br />.:_1•` <br />1 <br />0 <br />