14 C40 Prior to the closure of Area 2 the Consent Holder shall remove the pipe bridges within Area 4 which cross the Ohinemuri River at State Highway 25 and Willows Road. C41 The Consent Holder shall rehabilitate all areas within Area 5 that have been subject to mining activities authorised as part of this consent by: a. Capping the tailings in Gladstone Open Pit Tailings Storage Facility with a non-acid forming layer of rockfill, suitable rooting medium, topsoil layer, and contouring and drainage as required, to ensure the establishment and maintenance of a surface which will protect water quality and avoid soil erosion. The final capping shall allow for long term settlement of tailings; b. Grading the final capped surface of the Gladstone Open Pit Tailings Storage Facility towards two outlets, one on the southern side near the Gladstone Wetland and one of the western side where the pit crest is lowest; c. Backfilling 100 m of the Wharekirauponga Access Tunnel from the portal; d. Backfilling 100 m of the Martha Underground Tunnel from the portal; e. Backfilling any void where geotechnical conditions require it to ensure long term stability; f. Subject to (g), removal of all buildings and structures from the Waihi Surface Facilities Area; g. The Water Treatment Plant may remain on site if it is needed for ongoing treatment of water from rehabilitated areas; h. Restoring and recontouring disturbed landforms to appear similar to the existing landforms; and i. Restoration, riparian and wetland edge planting, and provision of recreational trails, in general accordance with Figure B – Proposed Closure – GOP, NRS and TSF3 annexed as Attachment 2 to these conditions. C42 The Consent Holder shall rehabilitate all areas within Area 6 that have been subject to mining activities authorised as part of this consent by: a. Recontouring and smoothing the remaining rock in the Northern Rock Stack to reflect the adjoining rounded landforms; b. Capping the remaining rock, including provision of a low permeability non-acid forming layer to limit water and oxygen ingress, suitable rooting medium, topsoil layer, and contouring and drainage as required, to ensure the establishment and
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