REV DATE REVISION DETAILS APPROVED 0 07.06.22 Draft for review. Project WAIHI NORTH Title Erosion & Sediment Control Plan Willows Road – Topsoil Stockpile Drawn ZW Checked MP Drawing No. ESCP-WR-003-01 Sheet No. 4 NOTES 1. All erosion and sediment controls will be installed and maintained in accordance with the Waikato Regional Council Technical Report 2009/02 ‘Erosion and Sediment Control Guidelines for Soil Disturbing Activities’ (TR2009/02). 2. Completed areas to be stabilised in accordance with TR2009/02. 3. All erosion and sediment control measures will be inspected on a daily basis by the site foreman. 4. Site monitoring will be undertaken before and immediately after rain as well as during heavy rainfall events. Any required maintenance or improvements to control measures will be undertaken immediately. KEY Erosion and Sediment Control Clean Water Diversion Dirty Water Diversion Culvert Super Silt Fence Sediment Retention Pond Decanting Earth Bund Sediment Retention Pond 2 (SRP-2) Catchment area: 3ha Total volume: 900m3 Dead storage: 270m3 Live storage: 630m3 Pond dimensions: 50m x 17m x 2m Catchment area limited to 3ha managed between stockpile and road upgrade. Magazine Access Track Construction Methodology – Section 1 Access road to be progressively constructed from the bottom of the road working towards the Magazine Storage Area. Work will operate as a cut and cover methodology as much as practically possible by cutting the road to design and stabilising with aggregate. Batters will be progressively hydroseeded / hydro mulched. Magazine Access Track Construction Methodology – Section 2 Roadside table drain collecting runoff and piped (ø300mm) under access road and flumed down to the topsoil stockpile SRP. Section 1 Section 2 Retain existing access. CWD bund – Topsoil stockpile (2ha)
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