Lighting Assessment WAI-985-000-REPLC-0019_Rev 0.Docx Waihi North Project Page 31 of 35 21/06/2022 Assessment of Environmental Effects: Lighting REVISION: 0 - Final 3.8 ASSESSMENT OF EFFECTS 3.8.1 Spill Light Effects In all WNP situations, direct spill light should be able to be contained to comply with the Hauraki District Plan requirement for a maximum of 8.0 lux (lumens per square metre). The possible exception being lighting to the Willows Road SFA site entry gate where a streetlight(s) installed for safety may exceed the 8.0 lux spill on to Willows Road. The extent, if any, of spill light will depend on the proximity of the entry gate to the road. Direct light spill will be very localised to the lighting pole(s) with effects minimised by using flat-glass (zero upward component) luminaire(s), backlight shielding (if required), appropriate luminaire orientation, and the use of 3000K LED technology. 3.8.2 Glare Effects Mobile lighting plant has the potential to result in glare effects. Any lighting which is not installed with horizontal flat glass, such that lamp sources are visible from outside the site, may cause glare effects. Given the increasing elevation of both the NRS and TSF3 as they develop, with respect to the surrounding countryside, even flat glass luminaire installation may result in glare effects external to the site. A similar situation may occur during initial mining of the GOP at the top of hill. After dark activities associated with the WUG rock stack which require the use of mobile lighting plant, have the potential to produce glare effects when the stack’s height exceeds the height of the surrounding hillsides (reference: Boffa Miskell, Waihi North, Landscape Assessment, Appendix 3: Visual Simulations, Views 1 to 9). Similar glare effects could occur with lighting associated with activities at the NRS (Visual Simulations, Views 15 to 17) and TSF3 (Visual Simulations, Views 18 to 21). These effects would be visible from the various public and residential viewing locations described in Boffa Miskell’s “Waihi North Project, Landscape, Natural Character and Visual Effects Assessment, Prepared for Oceana Gold New Zealand Limited”. With respect to the WUG, the Boffa Miskell assessments of the level of effects associated with these works range from “Very Low” to “Moderate-Low” for the locations identified in visual simulations 1 to 9. The lighting effects, however, have the potential to be more significant given that they will be viewed in the context of a darkened foreground and background. The extent of effects will depend upon the perspective of the viewer, the viewing location, and the type of controls placed upon the use of mobile lighting plant. For those residents who value the existing darkened night environment, such effects could range from “Moderate-Low” to Moderate-High” (using Boffa Miskell’s rating system). Views of mobile lighting associated the NRS will initially be seen against the backdrop of existing conveyor lighting and consequently the effects should be “Low”. Any effects from lighting associated with the construction of the temporary stockpile could be expected to be “Moderate” to “Moderate-High” where the viewing location is in Golden Valley Road (View 15). From more remote locations (Views 16), the effects from mobile lighting plant would predominantly be screened by existing vegetation and landscapes.
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