B-2 – Area 2 - Assessment of Environmental Effects 48 Activity Relevant Rules Comment rules in Chapter 7 of the WRP, which apply to the take of water from geothermal systems, do not apply. To dam and divert water within unnamed tributaries of the Mataura Stream and from natural runoff around developed areas to downstream water bodies and overland flow paths. Discretionary activity under Rule 3.6.4.13. Clean water diversion drains will be used to separate clean water from those areas of the WRS and haul road that may contain PAF. The diversion will move upgradient as the rock stack footprint increases. To dam and divert runoff, intercepted groundwater and underdrain seepage from the WRS, Mine Access Road and WRS Toe Seepage Pond to the Main Collection Pond. Discretionary activity under Rule 3.6.4.13 and 3.6.4.14. All runoff and seepage from the WRS will be diverted to the Main Collection Pond, and from there to the WTP for treatment via the services trench prior to discharge to the Ohinemuri River. To dam and divert water for erosion and sediment control purposes using clean water and dirty water drains. Discretionary activity under Rule 3.6.4.13 and 3.6.4.14. Over the life of the project, multiple clean and dirty water drains will be established to divert water around the site for erosion and sediment control purposes. Clean water drains will divert water from undisturbed catchments around disturbed areas to surface water bodies or natural flow paths. Dirty water diversions will divert water to sediment retention ponds and decanting earth bunds. To dam water in an unnamed tributary of the Mataura Stream associated with the construction and operation of the WRS Toe Seepage Pond. Discretionary activity under Rule 3.6.4.14. The Rock Stack Collection Pond will be established on and result in the damming of an unnamed tributary of the Mataura Stream immediately downstream of the WRS. To dam water within the Main Collection Pond. Permitted activity under Rule 3.6.4.4. Damming of water is required to construct the Main Collection Pond and Dry Detention Pond. Given this damming of water will
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