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<br />Aggregate Industries Morrison Quarry GEI Consultants, Inc. <br />Geotechnical Addendum, 2016 Annual Report 2 January 2017 <br />The Central Quarry was mined to an approximate bottom elevation of 6330 above MSL <br />utilizing highwalls and benches at a nominal 1:1 (H:V) or steeper slope. In 2016, reclamation <br />was effectively completed within the Central Quarry when the southwest corner was <br />backfilled even with the surrounding elevation (El. 6500). At the location shown in Fig. 3, AI <br />has continued to stockpile material stripped from mining activities within the Central Quarry <br />in addition to jade air fines created during aggregate production in stockpiles above El. 6500 <br />(Fig. 3). AI plans to utilize this material in future reclamation slopes within the South Quarry. <br />In the South Quarry, mining activity continued in 2016. Mining continued between <br />approximate El. 6600 and 7360 above MSL. The mining, utilizing highwalls and benches, <br />primarily occurred on the western (east facing) portions of the South Quarry. Additional <br />2016 activities within the South Quarry included reclamation, construction and maintenance <br />of haul roads, and overburden stripping.