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Aggregate Industries, Morrison Quarry <br /> Amendment No.7 to Permit M-1973-021 FYZ <br /> Morrison,CO <br /> As discussed in Exhibit G— Water Information, once hydrogeologic investigations are <br /> completed, a Phase IV water management strategy will be developed and included in a future <br /> permit amendment. <br /> Exhibit D.3 presents the buildout configuration for Phase IV in plan view. This buildout <br /> configuration represents maximum buildout configurations on all portions of the quarry. The <br /> base elevation in this exhibit is El. 6,000 due to conservative benching in Phase III. As stated <br /> above, the potential decision to re-mine Phase III benches would modify the Phase IV bench <br /> configuration and support mining down to the Phase IV maximum bench depth of El. 5840. This <br /> exhibit will be updated in the future permit amendment. <br /> Schedule for Phase IV Buildout <br /> Phase IV is estimated to take approximately 16.5 years. Approximately 14.5 acres of the South <br /> Quarry will be impacted during Phase IV. <br /> September 2021 1 20 <br />