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landfill settlement. After completion of the final cover, a settlement monument <br /> will be set on the landfill on the bench as shown on Drawing Sheet 2. The <br /> monument will be used to monitor settlement within the Stage IA partial closure <br /> area and will allow for a determination of the actual settlement that occurs over <br /> the post-closure maintenance period. <br /> Additionally, 27 CCR, Section 21090 (e)(2) requires operators to produce iso- <br /> settlement maps every five years throughout the post-closure maintenance <br /> period or until settlement has ceased. Prior to an aerial survey, the monument <br /> will be surveyed for horizontal and vertical control so that an accurate disposal <br /> area topographic map can be developed. Aerial "targets" will be placed over the <br /> monument after the survey has been completed and an aerial topographic map <br /> will be generated to provide an up-to-date contour map of the Stage IA partial <br /> closure area. The settlement and lateral movement of the monument will then <br /> be recorded. <br /> Prior to a scheduled survey of the monument, an inspection will be performed to <br /> ensure that the monument is intact and usable. The monument will be cleared <br /> of all debris and vegetation to allow for visual location of the monument and <br /> accurate readings. Should the monument be damaged or missing, a new <br /> monument will be placed at that location so that the continuity of the previous <br /> survey data will be maintained. <br /> If the monument is within an area requiring regrading and/or other <br /> reconstruction, it shall be replaced at approximately the same horizontal location <br /> and a note shall be placed to identify the new elevation. <br /> Forward Landfill PFCPCMP 4-4 <br /> J:\Allied\Forward\2005.0051 Partial Closure\Partial Closure Plan\FL-sec4.doc:6/9/2005 <br />