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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 />