Erosion and Sediment Control Assessment Report Rev. 0 This is an uncontrolled copy if photocopied or printed from the Intranet. Copyright © 2016, SouthernSkies Environmental Ltd. All rights reserved. Page 8 of 30 2.3. Gladstone Open Pit GOP is a new open pit to the west of the Processing Plant. The earthworks operations to establish the pit will include: • Establishment of erosion and sediment control measures (clean water control, sediment retention devices and dirty (site) water control); • Initial vegetation clearance and topsoil stripping; • Establishment of the Southern Stockpile for the storage of topsoil and initial overburden (NAF material) adjacent to the pit footprint; and • Establishment of laydown and working yard areas. Once the pit excavation becomes inverted all site water will report to the pit and be managed via pumping to the existing WTP. Figure 3: Gladstone Pit (Source: OGNZL). 2.4. Northern Rock Stack The NRS is a new rock storage facility to be established to the north of TSF2, involving the following earthwork and stream work operations: • Initial vegetation clearance and topsoil stripping • Establishment of the upper catchment cleanwater diversion channel; • Establishment of erosion and sediment control measures (cleanwater control, sediment retention devices and dirty (site) water control); • Establishment of stockpile areas for the topsoil and initial overburden (non-acid forming material) adjacent to the Northern Rock Stack footprint; and
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