Site-specific Assessments of Environmental Effects

B-2 – Area 4 - Assessment of Environmental Effects 29 Table 3: Summary of the proposed management and monitoring measures for Area 4. Actual or Potential Effect Recommended Mitigation / Management Recommended Monitoring / Future Action Additional Measures Proposed by OGNZL Surface Water Impacts to water quality during the construction phase as a result of the discharge of sediment from earthworks during rain events. Prepare and adhere to a comprehensive Site Specific Erosion and Sediment Control Plan, which is: Consistent with Waikato Regional Council Technical Report No. 2009/02 Erosion and Sediment Control Guidelines for Soil Disturbing Activities, January 2009 (TR2009/02); and In general accordance with Erosion and Sediment Control Assessment Report by Southern Skies dated June 2022 and provided as Part H of these application documents. It will include diversion of cleanwater around worksites, and the capture and treatment of all stormwater from work areas in appropriately designed sediment retention devices prior to discharge to adjacent waterbodies. Routine monitoring of erosion and sediment control measures to identify maintenance requirements. Routine monitoring of the discharge from sediment retention ponds and decanting earth bunds during high rainfall events to confirm they are operating effectively and meeting performance targets. None. Impacts associated with the structures containing utility services piping over the bed of the Shigemura River. The structures shall be constructed in general accordance with the design in Chapter 3 of this sub-AEE. Construction works shall be implemented under the supervision of persons with appropriate experience in the supervision of civil engineering construction works. None. None.

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