REV DATE REVISION DETAILS APPROVED 0 07.06.22 Draft for review. Project WAIHI NORTH Title Erosion & Sediment Control Plan Willows Road – Surface Facilities Area Drawn ZW Checked MP Drawing No. ESCP-WR-001-01 Sheet No. 1 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. Sediment Retention Pond 1 (SRP-1) Catchment area: 1.5ha Volume: 300m3 Dead storage: 90m3 Live storage: 210m3 Dimensions of pond: 35m x 11m x 1.8m Refer to SRP-1 design details. If required, SRP to be constructed to enable the initial cut to fill earthworks to construct the Detention Pond. KEY Erosion and Sediment Control Clean Water Diversion Dirty Water Diversion Culvert Super Silt Fence Sediment Retention Pond Decanting Earth Bund Emergency spillway from Detention Pond Detention Pond Design volume: 5,000m3 Fitted with concrete manhole, 300mm outlet pipe and 3x Tbars during enabling earthworks phase. If required, cut area to enable construction of Detention Pond. Material to be carted along existing farm tracks. Install 300mm culvert under entry/exit point to allow runoff to flow to SRP-1. CWD – SFA (1ha) 1200mm dia culvert (designed by BECA).
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