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OOT-OB-B6 02:16PL1 FROIkLIcCULLEYFRIC &GILLUN 3034471636 ~ T-OIB P.07/15 F-154 <br />• Tnm the upstream edge of the existing HDPE FML such that it terminates along the crest of the <br />interim bean. <br />• Deploy the GCL component of the first phase of the new liner sysum such that tt significantly <br />overlaps the trimmed free edge of the existing FML. <br />• Deploy the FML component of the first phase of the new liner system such that a extends beyond <br />the end of the deployed GCL and weld the new FML to the underlying eusting FML. <br />• Deploy the GCL component of the second phase of the new liner system such that it stgntficanily <br />overlaps the weld securing the firs[ phase FML to the previously existing FML and the first phase <br />GCL. <br />• Place a bead of granular ben[onite along the free ends of the second phase GCL panels to provide <br />an enhanced seal against moisture mtgratmg under the GCL. <br />• Deploy the FML component of the second phase of the new liner system such that it overlaps the <br />free end of the second phase GCL component and weld the second phase FML to the first phase <br />FML. <br />All FML seams are to be tested both non-destrucnvely and destructively, in accordance with approved <br />protocols, [o ensure the integtiry and strength of the welds. Atypical cross-secoon of the proposed liner <br />system design modificanon at the mtenm berm is shown on Detail 4, Drawing 5461-C5. <br />J ~Si6i~tECH-REVI.WpI) $ October 9, 1998 <br />