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ENVIRONMENTAL REPORT // 01.07.11 // 30.06.12 Matters Directly Withinterested Parties

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ENVIRONMENTAL REPORT // 01.07.11 // 30.06.12 Matters Directly Withinterested Parties ENVIRONMENTAL REPORT // 01.07.11 // 30.06.12 2 1 This report provides a summary of key environmental outcomes developed through the process to renew resource consents for the ongoing operation of the Tongariro Power Scheme. The process to renew resource consents was lengthy and complicated, with a vast amount of technical information collected. It is not the intention of this report to reproduce or replicate this information in any way, rather it summarises the key outcomes for the operating period 1 July 2011 to 30 June 2012. The report also provides a summary of key result areas. There are a number of technical reports, research programmes, environmental initiatives and agreements that have fed into this report. As stated above, it is not the intention of this report to reproduce or replicate this information, rather to provide a summary of it. Genesis Energy is happy to provide further details or technical reports or discuss matters directly with interested parties. HIGHLIGHTS 1 July 2011 to 30 June 2012 02 01 INTRODUCTION 02 1.1 Document Overview Rotoaira Tuna Wananga Genesis Energy was approached by 02 1.2 Resource Consents Process Overview members of Ngati Hikairo ki Tongariro during the reporting period 02 1.3 How to use this document with a proposal to the stranding of tuna (eels) at the Wairehu Drum 02 1.4 Genesis Energy’s Approach Screens at the outlet to Lake Otamangakau. A tuna wananga was to Environmental Management held at Otukou Marae in May 2012 to discuss the wider issues of tuna 02 1.4.1 Genesis Energy’s Values 03 1.4.2 Environmental Management System management and to develop skills in-house to undertake a monitoring 03 1.4.3 Resource Consents Management System and management programme (see Section 6.1.3 for details). 03 1.4.4 Hydrology Transformer upgrade Between January and July 2012, all the 03 1.5 Feedback original 40 year old transformers connecting Tokaanu Power Station 04 02 TONGARIRO POWER SCHEME to the National Grid were replaced with larger units of 70 MVA 05 2.1 Operating the Tongariro Power Scheme rating. This project included the upgrade and enlargement of the oil 05 2.2 Climate and Power Generation interception system and replacement of the cables connecting the 06 03 EASTERN DIVERSION generators to the transformers (see Section 7.5 for details). 07 3.1 Wahianoa Aqueduct 07 3.1.1 Hydrology Whio Forever Genesis Energy entered into a five year $2.5 million 07 3.1.2 Aquatic Ecosystems and Water Quality National Whio Investment Agreement with the Department of 07 3.1.3 Ngati Rangi Conservation during the reporting period. The agreement was 08 3.1.4 Mangaio Power Station launched at the Tongariro National Trout Centre on 1 March as part 08 3.2 Lake Moawhango of Whio Awareness Month with dignitaries and representatives from 08 3.2.1 Hydrology a wide range of organisations. The funding will help secure whio 08 3.2.2 Sediment (Erosion, Transport and Deposition) across New Zealand and will increase public awareness about whio. 09 3.3 Moawhango River A third Whio Family Day was also successfully held at the Trout 09 3.3.1 Hydrology Centre in March (see Section 8.1 for details). 12 3.3.2 Aquatic Ecosystems and Water Quality 13 3.3.3 Natural Character and Amenity Issues Weed cordon at Lake Otamangakau In September 2011, a 13 3.3.4 Recreation/Tourism multi-agency biosecurity collaboration between the Department 14 3.3.5 Ngati Whitikaupeka, Ngati Tamakopiri and Ngati Hauiti of Conservation, Manawatu Wanganui Regional Council, Bay of 14 3.3.6 Moawhango Community Plenty Regional Council (BoPRC) and Genesis Energy resulted 15 04 TONGARIRO RIVER in the establishment of an aquatic weed cordon around the Lake 16 4.1 Hydrology Otamangakau boat ramp. The weed cordon, developed by BoPRC, 18 4.2 Aquatic Ecosystems and Water Quality is designed to catch fragments of aquatic weeds that might hitch a 20 4.3 Sediment (Erosion, Transport and Deposition) ride on boats or trailers, preventing new weed pests like hornwort 20 4.4 Recreation and Tourism establishing in the lake. The weed cordon is part of a larger aquatic 22 05 WESTERN DIVERSION biosecurity push in the region (see Section 8.5 for details). 24 5.1 Hydrology 25 5.2 Aquatic Ecosystems and Water Quality 25 5.2.1 Western Diversion Monitoring Plan ABBREVIATIONS 27 5.2.2 Trout AER Annual Environmental Report 27 5.2.3 Whanganui River Enhancement Trust BoPRC Bay of Plenty Regional Council 28 5.3 Recreation and Tourism CDMP Construction Debris Management Plan 28 5.3.1 Recreational Releases CSR Comprehensive Safety Review 28 5.3.2 Recreational Initiatives DOC Department of Conservation 29 5.3.3 Whanganui Iwi ECNZ Electricity Corporation of New Zealand 30 06 LAKE ROTOAIRA/LAKE TAUPO EMS Environmental Management System EPT 31 6.1 Lake Rotoaira Ephemeroptera, Plecoptera, and Trichoptera (the three insect orders commonly used to test water quality) 31 6.1.1 Hydrology ERLAWS Eastern Ruapehu Lahar Alarm and Warning System 31 6.1.2 Aquatic Ecosystems and Water Quality GWh Gigawatt hour 31 6.1.3 Tuna Management IBI Index of Biological Integrity 32 6.1.4 Lake Rotoaira Trust masl meters above sea level – Moturiki Datum 32 6.1.5 Rotoaira Channel Sediment Disposal Site MAF Ministry of Agriculture and Forestry 32 6.2 Tokaanu Stream MCI Macro-invertebrate Community Index 33 6.3 Tokaanu Tailrace and Lake Taupo MfE Ministry for the Environment 33 6.3.1 Hydrology MVA Megavolt Ampere 33 6.3.2 Aquatic Ecosystems and Water Quality MW Megawatt MWRC Manawatu Wanganui Regional Council 34 07 SCHEME-WIDE OUTCOMES NIWA National Institute of Water and Atmospheric Research 35 7.1 Ngati Tuwharetoa - Genesis Energy Committee NZDF New Zealand Defence Force 36 7.2 Central North Island Blue Duck Conservation Trust OPC Sir Edmund Hillary Outdoor Pursuits Centre 36 7.3 Publicly Available Hydrology Information QMCI Quantitative Macro-invertebrate Community Index 36 7.4 Volcanic Activity Management Plan (VAMP) RCMS Resource Consent Management System 37 7.5 Maintenance Activities RDC Ruapehu District Council 39 7.6 Run-off Management Plan RMA Resource Management Act (1991) 39 7.7 Dam Safety SHMAK Stream Health Monitoring Assessment Kit 40 7.8 Oil Spill Response TPS Tongariro Power Scheme 40 7.9 Public Complaints TRMP Tongariro River Monitoring Plan 40 7.10 Waikato Regional Council Audit TSMG Tokaanu Stream Management Group VAMP Volcanic Activity Management Plan 41 08 COMMUNITY & ENVIRONMENTAL INITIATIVES WDC Wanganui District Council 42 8.1 Whio Forever WRC Waikato Regional Council 43 8.1.1 Sponsorship for Lower Tongariro Community Blue Duck Project WHIONE Whio Operation Nest Egg 43 8.2 Tongariro National Trout Centre WRET Whanganui River Enhancement Trust 44 8.3 Sir Edmund Hillary Outdoor Pursuits Centre Sponsorship 45 8.4 Green Rig 45 8.5 Aquatic Biosecurity 46 8.6 Turangi Community Health Centre 46 8.7 Genesis Energy Turangi Aquatic Centre 47 8.8 Turangi Public Library - Summer Reading Programme 47 8.9 Te Whare Waka - Tokaanu Water Sports Centre 47 8.10 The Kerry Scott Story - History of the Tongariro Power Development 48 09 KEY OBJECTIVES 2010-11 REVIEW 49 9.1 Review of Key Objectives for 2011-2012 50 9.2 Key Objectives 2012-2013 Cover photo: View of Lake Moawhango and Moawhango Dam 51 10 REFERENCES 01 INTRODUCTION how these issues should be investigated and, in most cases, to agree on outcomes to address these issues. Nau mai haere mai ki tenei Ripoata Taiao e pa ana ki te mahi hihiko mo tenei rohe o Tongariro. The extensive programme of consultation and research has led to a comprehensive suite of resource consents that authorise the Welcome to the 2011-2012 Annual Environmental Report (AER) continued operation of the TPS. for the Tongariro Power Scheme (TPS). The purpose of this report is to update communities and stakeholders on the wide range of Ongoing monitoring programmes – some required by consent activities which occurred at the TPS between 1 July 2011 and 30 conditions and some undertaken by Genesis Energy for June 2012. This is the seventh AER for the TPS and follows the operational reasons – have added to information gathered during 2010–11 report published in September 2011. This report will: the consents process. provide an overview of resource consent compliance at the TPS; This document refers to a range of outcomes from the consultative provide an update on monitoring and research programmes; process; both resource consent conditions as well as mitigation report back on key projects; outcomes that operate outside of the resource consents. Where report on community and environmental initiatives; possible, outcomes resulted in resource consent conditions that define environmental objectives at the TPS for the require specific actions to occur at specific locations and points in next 12 months. time. However, some issues cannot be addressed via resource consent conditions because they cannot be easily tied to a specific Genesis Energy aims to be accessible to the public, to address location. In such cases, Genesis Energy works directly with issues as they arise and to develop closer working relationships parties to implement mitigation outcomes that are outside the within the communities within which it operates. resource consent conditions. These outcomes are referred to as ‘agreements’. 1.1 DOCUMENT OVERVIEW 1.3 HOW TO USE THIS DOCUMENT Genesis Energy produces a suite of reports and other documentation on its activities each year (Figure 1). These This report documents environmental outcomes based on key include detailed technical reports, audit reports and various geographical regions: reporting requirements to stakeholders.
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