B-2 – Area 4 - Assessment of Environmental Effects 15 Concepts that inform the development of the draft Site-Specific Erosion and Sediment Control Plans (“SSESCPs”); A Chemical Treatment Management Plan (“CTMP”); An Erosion and Sediment Control Monitoring Plan; and Draft SSESCPs for each project Area (including Area 4). In accordance with accepted best practice, it is intended that OGNZL will provide final SSESCPs for each project area for certification by the Consent Authority following detailed design but prior to commencing any earthworks onsite. The principles of the Waikato Regional Council (“WRC”) Technical Report No. 2009/02 Erosion and Sediment Control Guidelines for Soil Disturbing Activities, January 2009 (TR2009/02) have been adopted by Southern Skies (2022) for the design, construction, maintenance and decommissioning of erosion and sediment control measures. However, as a result of the scale and nature of the works proposed, Southern Skies (2022) identify that deviations from that standard will be required to achieve the outcomes sought by the ESCAR. The deviations will be provided in SSESCPs and by implementing those deviations Southern Skies (2022) identify that the works will achieve the same or better outcome than a TR2009/02 compliant approach. By way of summary the erosion and sediment control measures will include the use of pump and portable water treatment tanks to capture dirty water runoff collected in the trench for treatment and discharge to the receiving environment. 3.4 RIVER CROSSINGS The proposed Services Trench alignment crosses the Ohinemuri River in two locations (SH25 and Willows Road). Dedicated pipe bridges will be constructed adjacent to existing road bridges to carry services across the waterways (refer Figures 7 and 8). The pipe bridge structures will be supported at each end by reinforced concrete plinths. All structures will be located within the respective road reserves and no works within the bed of the river are required. Fibre and electricity services may be able to attach to the existing road bridges subject to the approval of the road controlling authorities.
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