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All earthwork was carried out the specifications of TR 02 in Zone 4. However,the subsurface <br /> pipes were modified, and thus a revised slope stability analysis was conducted. It meets the <br /> required criteria; see Section 4. <br /> ter. ` <br /> Drainage <br /> r . <br /> mow,. <br /> Pipes <br /> • • <br /> I° <br /> a q ( <br /> 'l,I v Y WE n ✓ <br /> af4 <br /> Figure 3—Zone 4 Aerial Photo (May 2020) <br /> 3. Material Data <br /> All slope stability models discussed in this as-built use the material properties outlined in the <br /> Ground Engineering report from TR 02 (Felbaum &Reck, 2020). These materials are described <br /> in more detail in that report, but are summarized in Table 3 with regards to the properties <br /> applicable for use in slope modelling. The Designed Fill category refers to the material used in <br /> the construction of buttresses. This material is mostly sourced from tailings excavation and <br /> manufactured fines from the quarry operations, and then is quality controlled to meet consistent <br /> Ralston TR 03 7 Greg 1,.kki and 4swci&$M FLU' <br />