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'Phase IVb Weekly Summary No. 1 Page 2 003-2203 <br />on the Phase III ore slope <br />Ames continued cleazing and grubbing in Phase IVb on Substation Hill. Topsoil was stripped and <br />stockpiled locally in preparation for relocation to a permanent topsoil stockpile. Ames hauled <br />oversize material from the Phase IVb area to an uncontrolled fill site and deleterious material to <br />Upper Arequa Gulch. <br />Ames continued construc$on of the Leak Detection Trench (LDT) in Phase IVb along the North slope. <br />Ames constructed approximately 500 feet of LDT. <br />Ames completed placement of DCF over previously deployed geomembrane at the PSSA west end <br />berm. <br />Ames resumed underdrain construction by constructing Secondary and Tertiary underdrains near the <br />new LOB. Ames constructed approximately 120 feet of Secondary underdrain and approximately 80 <br />feet of Tertiary underdrain. <br />Ames resumed DCF removal from the edge of the Phase fVb liner in preparation for Bedding Fill <br />placement. <br />Ames performed excavation remediation activities for underground working UG-493. This working <br />was observed and verified to be "Deep" as defined in the drawings and will be remediated accordingly. <br />Ames resumed placement of Concrete Plug (CP) concrete into "Deep Shaft" UG-493. Ames placed <br />three feet of concrete in accordance with IFC Drawing 12, Detail 1. <br />Ames placed Cemented Rockfill (CR) at UG-493 and UG-263 by tapering the workings and placing 7 <br />feet of CR in accordance with 1FC Drawing 12, Detail 1.. <br />Ames continued placement of Coazse Shaft Backfill (CSB) into "Deep" underground working UG-493. <br />Ames continued placement of Select Structural Fill (SSF) into UG-481. <br />Phase IVc <br />Ames performed confirmatory drilling activities associated with the Phase IVc construction azea on <br />underground working UG-274. <br />Ames performed excavation remediation acfivities for underground workings UG-274, UG-279, and <br />UG-270. These workings were observed and verified to be "Shallow or Deep", as defined in the <br />drawings, and will be remediated accordingly. <br />Ames placed Cemented Rockfill (CR) at UG-275 and UNK-08 by tapering the workings and placing 7 <br />feet of CR in accordance with IFC Drawing 12, Detail 1. <br />Phase Nbl Aug30.5ept14.doc Golder Associates Inc. <br />