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An <br />AMEC observed subgrade preparation within the Mill Site Earthworks project prior to structural fill <br />placement. Subgrade temperatures were monitored prior to fill placement. <br />AMEC observed excavation and placement of structural fill within the Mill Site Earthworks project. <br />Ambient, existing, and placed fill temperatures were monitored throughout the week. <br />AMEC observed remediation of UG #4014. <br />AMEC observed collapsing of the crown pillars at UG #4028, UG #4029, and UG #4031 by blasting. <br />AMEC observed grouting of "miss" (non -void) holes at UG #4028. <br />AMEC observed the excavation of the collapsed crown pillar at UG#4028. <br />AMEC observed grouting of "miss" (non -void) holes at UG #4029. <br />AMEC observed grouting of "miss" (non -void) holes at UG #4039. <br />AMEC observed grouting of "miss" (non -void) holes at UG #4040. <br />AMEC observed confirmatory drilling at UG #4040. <br />AMEC observed confirmatory drilling at UG #4045. <br />AMEC observed confirmatory drilling at UG #4046. <br />AMEC observed confirmatory drilling at UG #4047. <br />AMEC observed confirmatory drilling at UG #4048. <br />AMEC observed investigation and remediation of UG #4050. <br />AMEC observed confirmatory drilling at UG #4051. <br />AMEC observed confirmatory drilling at UG #4052. <br />AMEC observed the construction of the Secondary Underdrain under the Mill Site Fill area. <br />Testing Summary <br />Laboratory testing continued (Particle Size Distribution, Atterberg Limits, Moisture - Density Relations, <br />Specific Gravity, Permeability, and Point Load testing) for sampled materials. <br />GENERAL PROJECT ITEMS <br />Summary of Concerns: <br />No concerns <br />Summary of Planning Items: <br />Continue clear and grub activities for the Mill Site Earthworks project. <br />Continue stripping and relocation topsoil for the Mill Site Earthworks project. <br />MEW Weekly Report WE 02.18.2012 <br />