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 Comment NZTA’s representatives have undertaken extensive consultation during the TEM process, starting with the designation phase and continuing through to the current phase. Throughout this process, NZTA staff and consultants have been aware of the historical and cultural importance of ancestral lands, water, sites, waahi tapu, and other taonga to iwi and hapu affected by the Project. As part of this application Tauranga City Council has taken part in all consultation, attended meetings and hui to answer questions and queries regarding the Mangatawa Floodway proposal. NZTA and TCC have developed a relationship with affected hapu and iwi and throughout the Project have listened, discussed and incorporated iwi and hapu interests in the project. An example of this process is in the preparation of the protocol and the intention to provide training for monitoring of earthworks for the project and the restriction of works in the lower Mangatawa Drain as much as possible. Water Quality -Objective 8.3.1(a): Water quality is maintained, and where practicable enhanced, to a level sufficient to safeguard aquatic life, to sustain the potential for water resources to be used and developed to meet existing and reasonably foreseeable future needs, and to provide for the protection of aesthetic or cultural values associated with water. Comment Water quality is maintained by the extensive use of wet swales along the proposed motorway and the swales will be designed using the ARC TP10 as the level of treatment required. The TEM alignment will drain to a surrounding network of swales though catch pits and pipes removing the current roadway water from the upper Mangatawa Drain approx ch 7900. The TEM from this point drains directly into the Maranui swale and will be treated by the enlargement of the Tauranga City Council wetland to meet this objective. Land- Objective 6.3.1(a): The adoption of sustainable land use and management practices. Comment The stormwater management system will enable the continuance of the rural and urban activities alongside the operation of the new motorway. The floodway is designed to provide flood protection to residentially zoned land in Papamoa. The sustainable land use practices laid out in the District Plan for residential areas require this basic protection. In addition the TEM Construction Management Plans will be crucial to ensuring that the construction methods will support the life-supporting capacity of soil and protect the quality of water in the farm drains and local streams and rivers. Contaminated Sites -Objective 12.3.4(a): The significant adverse effects of site contamination are avoided, remedied or mitigated. Status: Final Page 99 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 A desk top study has been conducted by Beca for contamination from previous land-use practice. It is intended that provision for a more detailed contaminated sites study be included in the TEM Principal’s. Requirements and undertaken during the construction phase of the Project. Specific conditions requiring further investigations and measures relating to contaminated land in this proposal will be included. 10.3 Operative Regional Water and Land Plan (RWLP) – 1 st December 2008 The RWLP provides for the integration of the management of land and water resources in the Bay of Plenty Region. There are a number of Objectives, Policies and Rules contained in the RWLP which are relevant to these resource consents. These are briefly discussed in the following paragraphs and they are quoted for completeness in Appendix 14. Chapter 2.0 - Kaitiakitanga The RWLP contains a number of provisions relating to Kaitiakitanga, specifically in Objective 4 and Objective 5 and Policies 14, 15, 17, 18 and 20 and Policy 42. As outlined extensive consultation with Tangata Whenua has taken place as part of these consents in addition to the consultation undertaken during the designation phase of the Project as described in paragraph 16 above. Policy 42 is referred to in paragraph 128 below. Chapter 3.0 – The Integrated Management of Land and Water The RWLP contains a number of provisions relating to the integrated management of land and water, specifically in Objectives 8, 10, 13, 14, 17, 19, 22 and cross-reference to Objectives 15.3.1(a) and 16.3.1(a). The integrated management of land and water incorporates the values of stewardship of natural resources and protecting the life supporting capacity of soils, water and ecosystems, management of riparian margins, and the protection of vulnerable areas from erosion. This project maintains the cultural, ecological, amenity, natural character and landscape values of the site through careful management and the extensive consultation through out the entire process up to these consents. With regard to the quality of the water derived from the motorway, the treatment proposed for the stormwater involves the best practicable option and will be in accordance with industry standard approaches. It will be an improvement on the existing stormwater discharge with respect to the TEM discharge to the Mangatawa drain and will be appropriate for discharge to the Tauranga Harbour. The ecological assessment undertaken by Bioresearches does not highlight any ecologically sensitive areas or species that the proposed activities will significantly affect. While there is Special Ecological Site adjacent to proposed works special care has been taken to avoid, remedy or mitigate effects on this area. The Maranui swale and outlet to Rangataua Bay, work already undertaken by TCC, provide significant reduction in the flood risk to the residential areas of Papamoa and the potential effects from flooding. Status: Final Page 100 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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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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