2. Mangatawa catchment consents for earthworks, storm water ...

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NZ Transport Agency and Tauranga City Council Mangatawa Drain Flood Bypass and TEM Stormwater AEE Comments This assessment shows that the TEM project can treat the water generated by the alignment reducing the levels of sediment, copper and zinc to less than existing levels. 10.6 Tauranga District Plan 4.2.2 Objective: To Sustain Natural Resources by Protecting the Functioning and Integrity of Ecosystems 4.2.2.3 Policy: Location of Activities Use and development should avoid locating in the coastal environment where the natural character remains intact. Activities should seek to locate where natural character has already been compromised and adverse effects of activities can more readily be avoided, remedied or mitigated. 4.2.2.5 Policy: Indigenous Flora and Fauna It should be recognised that intact areas of indigenous flora and fauna are underrepresented in the District, and use and development should provide for their maintenance and enhancement. Comments The stormwater treatment for urban and TEM purposes require the enlargement of an existing manmade wetland. The wetland provides the best opportunity to avoid large scale effects on ecosystems from the operation of the TEM and urban run off. Locating the wetland elsewhere would possibly require further land take and increase the effect of the proposal on private and public land holders. Locating the TEM treatment facility within this site represented the best approach to minimise the effects on the SES site. The wetland will also be replanted increasing the areas of indigenous flora and fauna on the site 4.2.3 Objective: Protecting Special Ecological Sites To protect in their natural state and sustainably manage all significant habitats of indigenous flora and fauna of the District. 4.2.3.2 Policy: Special Ecological Sites Subdivision, use and development within or adjacent to sites identified in Appendix 14A: Special Ecological Site Register or within or adjacent to other areas of significant indigenous vegetation and significant habitats of indigenous fauna, as defined by Policy 4.2.3.3, must be carried out in a way that does not result in a reduction in the health, viability or ecological values of those sites. Status: Final Page 103 April 2009 Project Number: 3932036 NZ1-1552092-Mangatawa Drain Flood Bypass and TEM Stormwater AEE
NZ Transport Agency and Tauranga City Council Mangatawa Drain Flood Bypass and TEM Stormwater AEE Comment The health and viability of the Special Ecological Site 13 will be protected in several ways. The non-complying activity conditions in the plan relate to the removal of vegetation and earthworks in the vicinity of the site. The removal of vegetation will be avoided where practicable but some indigenous vegetation may be lost in areas required for stormwater control. The over all design of the pond has preserved as much of the vegetation as possible and replanting and restoration will be undertaken to restore vegetation cover. A Construction Management Plan and Erosion and Sediment Control Plan will be produced by the contractor responsible for the construction of the wetland. These measures will reduce further the potential for the construction of the wetland to have an effect on the SES 13. Overall the effect on the SES will be no more than minor. 4.3.1 Objective: Water Quality and Quantity - Stormwater and Wastewater 4.3.1.1 Policy: Stormwater Management Subdivision, use and development should not adversely affect the ability of Greenbelt Zones and other substantially vegetated areas to effectively filter stormwater run-off from adjacent catchment areas. 4.3.1.5 Policy: Stormwater Discharges in the Coastal Environment The loss of natural character of the coastal environment from the discharge of stormwater across the foreshore or through dunes and the presence of stormwater disposal structures in the coastal environment, should be avoided or, where avoidance is not practicable, substantially mitigated. Particular regard should be had to the visual effects of piping, culverts and physical works associated with discharge structures and activities. 4.3.1.6 Policy: Stormwater Discharges to the Coastal Environment Land-use activities that involve discharge of stormwater to the coastal environment, wetlands and rivers should include measures to avoid, remedy, or mitigate any adverse effects of heavy metals, greases, suspended solids and other contaminants on the receiving waters, and should include measures to mitigate any adverse effects of the energy of the discharge on receiving waters. 4.3.1.7 Policy: Stormwater and Wastewater Quality Land-use activities should not discharge any contaminant or water containing any contaminants into a stormwater or wastewater system or on to land that will result in a cumulative adverse affect on the quality of the District’s soil or groundwater systems. Comment This proposal seeks to increase the volume of water discharging from the Stormwater Treatment Wetland into Special Ecological Site 13. These increases arise from the inclusion of the future developed Maranui catchment stormwater in the wetland, the future developed industrial land owned by MPBI at Truman lane and at Mangatawa and the TEM derived stormwater up to the 1% AEP level. It provides necessary treatment of the water from the Papamoa, Wairakei, Mangatawa (some) catchments and the TEM alignment through swales and Status: Final Page 104 April 2009 Project Number: 3932036 NZ1-1552092-Mangatawa Drain Flood Bypass and TEM Stormwater AEE
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Mangatawa Drain Flood Bypass and TE
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NZ Transport Agency and Tauranga Ci
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Page 60 and 61: NZ Transport Agency and Tauranga Ci
Page 116: APPENDIX 1 - Drawing 3932036 ck301R
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APPENDIX 7 - Archaeological Assessm
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ARCHAEOLOGY B.O.P. HERITAGE CONSULT
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2 INTRODUCTION Project Background T
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4 ARCHAEOLOGICAL LANDSCAPE Previous
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6 U14/1708 & 1709 Figure 3. Cadastr
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8 Figure 6. Part ML 8133 showing Pt
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10 Hungahunga & Toroa A further ton
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12 APRIL 2008 ARCHAEOLOGICAL SURVEY
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14 Historic Places Act In addition
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APPENDIX 8 - Hydraulic Modelling: M
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Hydraulic Modelling: Mangatawa Drai
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undertake investigations into the d
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Discharge to Papamoa Beach To disch
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• Riparian planting adjacent to t
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2.2 Hydrological Assessment 2.2.1 C
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The Maranui catchment area in the m
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Table 7 - 2% AEP Storm Event Top Sp
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These results include climate chang
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3.3 Maintenance Work in Mangatawa D
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stormwater from the Maranui catchme
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Appendix A Mangatawa Drain Layout P
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Appendix C Runoff Hydrographs
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Appendix E Proposed Lower Mangatawa
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APPENDIX 10 - Drawings 3932036 ck46
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APPENDIX 12 - Drawing 3932036 ck227
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Report Tauranga Eastern Motorway -
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1 Introduction This report describe
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embankment settlement rates, and th
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3.2 Construction Sequence The typic
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concrete contamination as well as s
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Pahse 1 consists of the western sec
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• Installation of Stage 2 decanti
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Appendix A Erosion and Sediment Con
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Activity Status Mangatawa Drain 1.1
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(b) Natural State (River) Water Qua
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6. Reclamation or drainage of the b
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APPENDIX 15 - Legal Descriptions of
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Path: P:\393\3932036\TGI\55_Project
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32 Harington Street PO Box 903, Tau
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32 Harington Street PO Box 903, Tau
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