TEKAPO POWER SCHEME ENVIRONMENTAL REPORT // 01.07.14 30.06.15 ENVIRONMENTAL 15 reports ordiscuss maters directly withinterested parties. summary ofit.GenesisEnergy ishappyto provide furtherdetails ortechnical of thisreport to reproduce orreplicate thisinformation, rather to provide a initiatives andagreements thathave fed into thisreport; itisnottheintention are anumberoftechnical reports, research programmes, environmental Power Schemefor thereporting period1July 2014to 30June2015.There This report summarises thekey environmental outcomes attheTekapo HIGHLIGHTS 1 July 2014 to 30 June 2015 02 01 INTRODUCTION 02 1.1 Document Overview Tekapo Canal Road Access The Tekapo Canal road public 02 1.2 Resource Consent Overview access enhancements continued during the reporting period 02 1.3 How to use this document 02 1.4 Genesis Energy’s Approach with upgrades of fencing along Gate 17, improved signage and to Environmental Management the installation of cycle and pedestrian access arrangements 02 1.4.1 Environmental Management System along-side Lake George Scott. These measures have improved 03 1.4.2 Resource Consents Management System the access over Gate 17 and along the Upper Tekapo River to 03 1.4.3 Hydrology the Tekapo township [Section 6.5]. 03 1.5 Feedback 04 02 TEKAPO POWER SCHEME Aquatic Weed Monitoring Genesis Energy commenced an 05 2.1 Operating the Tekapo Power Scheme aquatic weed monitoring programme, as part of a 05 2.2 Climate and Power Generation Waitaki-wide catchment programme. The programme aims 06 03 LAKE TEKAPO to proactively detect aquatic weed incursions, so that early 07 3.1 Lake Tekapo Hydrology measures can be taken to manage the incursion. The weed surveillance was carried out by NIWA, during February and 08 04 TEKAPO RIVER AND LAKE GEORGE SCOTT April 2015. No new incursions of aquatic weeds were detected 09 4.1 Lake Tekapo Control Structure 10 4.2 Lake George Scott during the surveillance [Section 7.1]. 10 4.2.1 Lake George Scott Control Weir 10 4.2.2 Lake George Scott Weir Discharge Aoraki Bound During the reporting period, Genesis Energy 10 4.3 Recreational Releases was proud to confirm sponsorship support for the Aoraki Bound programme for a further three years. Aoraki Bound 12 05 TEKAPO A POWER STATION, TEKAPO CANAL AND is a cultural and personal development programme which TEKAPO B POWER STATION 13 5.1 Tekapo A Power Station combines Ngãi Tahu cultural knowledge and expertise with the 13 5.2 Tekapo Canal experience and reputation of Outward Bound [Section 7.4]. 14 5.2.1 Stock Water and Irrigation Take 14 5.3 Tekapo B Power Station Christchurch Curtain Bank The Christchurch Curtain Bank 15 5.4 Ground and Surface Water Monitoring supported a record number of families with new curtains 15 5.5 Water Management Agreement and also began a new mobile curtain initiative to extend their 15 5.5.1 The Pukaki Supply Flow reach to outer suburbs and towns in the greater Canterbury 17 5.5.2 High Flow Management Coordination Group region. Genesis Energy is pleased to continue its support of the 17 5.6 Mount Cook Alpine Salmon Farm Christchurch Curtain Bank [Section 7.7]. 18 06 SCHEME-WIDE OUTCOMES 19 6.1 Cultural Health Assessment 19 6.2 Project River Recovery - Department of Conservation ABBREVIATIONS 20 6.3 Lake Alexandrina Fishery Enhancement Project - Fish & Game AER Annual Environmental Report 20 6.4 Mackenzie District Council Agreement DOC Department of Conservation 20 6.5 Tekapo Canal Road Access EMS Environmental Management System 21 6.6 Maintenance Activities GWh Gigawatt hour 21 6.6.1 Oil Interceptor Inspections HiCoG High Flow Management Coordination Group 21 6.6.2 Control Systems kW Kilowatt 21 6.6.3 Diesel Generator Fuel Tank at Tekapo B masl Metres above sea level – Moturiki Datum 21 6.6.4 Tekapo A Plantings MW 22 6.7 Dam Safety Megawatt 22 6.8 Public Complaints NIWA National Institute of Water and Atmospheric Research 22 6.9 Publically Available Hydrology Information PRR Project River Recovery RCMS Resource Consent Management System 23 07 COMMUNITY AND ENVIRONMENTAL INITIATIVES RECC Renewable Energy Control Centre 24 7.1 Tekapo Power Scheme Aquatic Weed Monitoring TekPS Tekapo Power Scheme 24 7.2 Schoolgen WMA Water Management Agreement 24 7.3 Lake Tekapo Footbridge Society 25 7.4 Aoraki Bound - Ngãi Tahu 25 7.5 Whio Forever 26 7.5.1 Whio Practitioners Workshop 26 7.6 Tekapo 10 27 7.7 Curtain Bank 27 7.8 Alder Removal 28 08 KEY OBJECTIVES 29 8.1 Review of Key Objectives for 2014-2015 30 8.2 Key Objectives for 2015-2016 31 09 REFERENCES 02 TEKAPO // 15 consents are operative until30April2025. to allow for minormaintenance works around thescheme.The take andusewater from Lake Tekapo throughout the TekPS and a range ofwater permits,landuseanddischarge permitsto District CouncilandCanterbury Regional Council.They include The resource consents for theTekPS are regulated byMackenzie 1.2 RESOURCECONSENTOVERVIEW www.genesisenergy.co.nz copy ofthisdocument,can befound onthewebsite: More information aboutGenesisEnergy, includinganelectronic references). undertaken (refer to specific technical reports listed inthe information onmonitoring programmes andotherinitiatives Annual Reportfor thisinformation) orprovide extensive detailed It doesnotdetail company strategy orperformance (refer to the environmental andstakeholder activitiesrelating to theTekPS. the company’s AnnualReport.Itprovides anoverview ofall This AERbridgesthegapbetween site specific reporting and Energy’s performance asacompany. The Company’s AnnualReportprovides anoverview ofGenesis site/local level. requirements to stakeholders. They address specificissues ata detailed technical reports, auditreports andvarious reporting documentation onitsactivitieseachyear (Figure 1).Theseinclude Genesis Energy produces asuite ofreports andother 1.1 DOCUMENTOVERVIEW within thecommunities inwhichitoperates. issues asthey ariseandto develop closer working relationships Genesis Energy aimsto beaccessible to thepublic,to address This report will: AER for the TekPS and follows the previous year’s (2013/14) report. June 2015(the‘reporting period’).Thisdocumentisthefourth activities thatoccurred attheTekPS between 1July 2014and30 to update thecommunity andstakeholders onthewiderange of the Tekapo Power Scheme(TekPS). Thepurposeofthisreport is Welcome to the2014/15AnnualEnvironmental Report(AER)for Ripoata Taiao ehãngaianakingãmahihihiko mõte rohe oTakapõ. E mihianakiakoutou irungangãtiniãhuatanga ote wã.Aneite 01 INTRODUCTION

FIGURE 1//Reporthierarchy atGenesisEnergy. define environmental objectives for thenext 12months. report oncommunity andenvironmental initiatives; and report backonkey projects; provide anupdate onmonitoring andresearch programmes; provide anoverview ofresource consent compliance attheTekPS;

day operational activities. stage ofanyproject through to GenesisEnergy’s normalday-to- physical resources and theenvironment, from theconceptual The EMSappliesto allactivitiesinvolving theuseofnatural and tools thatare well integrated withothercore business systems. (EMS) whichincorporates asuite ofmanagementprocesses and Genesis Energy operates anEnvironmental ManagementSystem 1.4.1 ENVIRONMENTAL MANAGEMENT SYSTEM ENVIRONMENTAL MANAGEMENT 1.4 GENESISENERGY’S APPROACH TO background information onspecificissues. Orange text like this to specific resource consent conditions. Consent #(condition) Bold text like this This report alsoprovides information for: key areas ofthescheme: This report documentsenvironmental outcomes basedonthree 1.3 HOW TO USETHISDOCUMENT www.genesisenergy.co.nz/environmental-management policy can alsobefound ontheGenesisEnergy website: documents intheBusiness ManagementSystem (BMS).This by theGenesisEnergy Board, andisnow oneoftheoverarching and CommunityEngagementPolicy Statement wasapproved During thereporting period,theEnvironmental Management The EMSalignswiththecore Companybehaviours of:

Community andEnvironmental Initiatives. Scheme-wide Outcomes; and Tekapo APower Station, Tekapo CanalandTekapo B Tekapo River andLake George Scott; and Lake Tekapo; Do what’s Right–For eachother,ourcustomers Keep itSimple –Make iteasyfor ourcustomers andourselves Make ithappen–Bebrave, smart,real anddeliver together. Power Station. and communities

willhelpyou to find your wayaround the report. throughout thereport provides useful identifiesthepartsof report that relate

or processes to best achieve 100%compliance. identify anyimprovements thatcould bemadeto RCMS systems the auditisto ensure correct procedures are beingfollowed andto undertaken onabiennialbasisatgeneration sites. Thepurposeof An internal RCMSandenvironmental compliance auditis party agreements. or view potentially confidential information contained withinthird Environmental Team can make changesand update/sign off tasks, company’s intranet butonly designated administrators withinthe All GenesisEnergy staff can access theRCMSthrough the overlooked. obligations effectively andthatessential requirements are not ensure that GenesisEnergy managesitsstatutory andstakeholder and reports onthestatus ofthese.ThepurposetheRCMSisto defines prompts andmonitors actions required bytheir conditions, consents, third partyagreements, andpermitted activities,and (RCMS). Thissystem holdsallinformation relating to resource Energy has developed aResource ConsentManagement System To helpmanagecompliance across allgeneration sites, Genesis 1.4.2 RESOURCECONSENTMANAGEMENT SYSTEM environmental managementsystems, namely ISO14001. be alignedwhere appropriate, withinternational standards for Policy Statement intheBMShierarchy. GenesisEnergy’s EMSwill Processes, Instructions andGuidelineswhichwillsitbelow this Genesis Energy iscurrently reviewing itsEnvironmental Standards, ensure that: Management System thatalignswithcore Companyvalues to The Companyachieves thisbyimplementing anEnvironmental around ourassets. people, communities andtheenvironment isexercised atand Company’s business activitiesandthatadutyofcare towards cultural awareness andresponsibility are cornerstones ofthe Energy iscommitted to ensuringthatenvironmental, socialand Whilst meetingitscommitments to itsshareholders, Genesis

The Companyseeksfullregulatory compliance asaminimum The role oftangata whenua(thepeople oftheland)askaitiaki The Companyseeksto foster robust, long-term relationships The Companytakes acontinuous improvement approach in The Companyalignswithinternationally accepted The Companyaccounts for itsuseofnatural resources and The Companyensures thatenvironmental risksfrom its The Companyinvestigates andunderstands theeffects ofits The Companypromotes environmental andsocialawareness The Companyoperates withintegrity andadutyofcare where itoperates. with Tangata Whenua,communities andkey stakeholders through implementation, monitoring, auditandreview. respect to environmental andstakeholder management environmental managementstandards. seeks to minimiseusewhile meeting business requirements. standard andpublicly reports onitsenvironmental performance. Management Policy. procedures andinaccordance withtheEnterprise-Wide Risk risk appetite through theCompany’s riskmanagement managed inamannerthatisconsistent withtheCompany’s operations are identified,documented, audited andeffectively its business commitments. solutions to avoid, remedy, ormitigate thesewhile achieving operations ontheenvironment andseekscollaborative is respected. within theirrohe (land)andtheTreaty ofWaitangi principles (guardians) ofthenatural resources andtaonga (treasures) Genesis Energy. as aresponsibility ofallpeople working at,orfor, in whichwe operate. towards theenvironment, stakeholders andcommunities ENVIRONMENTAL MANAGEMENT ANDCOMMUNITY ENGAGEMENT POLICY STATEMENT

1.5 FEEDBACK data set. re-examined before beingappendedto theGenesisEnergy Archive provided to GenesisEnergy onaquarterly basis.Thisdata isthen Data collected byNIWA must beinternally reviewed before being monitoring around theTekPS. Contract thatGenesisEnergy holdswithNIWA for hydrology hydrometric network andmanagetheHydrometric Services house hydrologists whocollect data andmanageGenesisEnergy’s Research (NIWA) andotherthird parties.GenesisEnergy hasin- Genesis Energy bytheNationalInstitute ofWater andAtmospheric Some oftheTekPS hydrology data iscollected onbehalfof in Tokaanu, together witharange ofplantandmarket information. Genesis Energy’s Renewable Energy Control Centre (RECC),located recording sites collect data inreal-time. Thisinformation issentto around theTekPS. Avariety ofwater level, flow andmeteorological Genesis Energy hasanextensive hydrology monitoring network 1.4.3 HYDROLOGY development oftheRCMSmeanthisproject hasbeendeferred. period, however ITinfrastructure upgrades andthepossible re- planned to incorporate these changes in the RCMS in the reporting ensuring thatthesystem ismore user-friendly. Aproject was were identifiedincludingenhanced reporting functionalityand During the2012/13reporting period,improvements to theRCMS the audit. improvements were identifiedandimplemented asa result of the Tekapo resource consents andthird partyagreements. Minor An internal auditwascompleted duringthereporting periodof Attn: Environmental Lead–SouthIsland CHRISTCHURCH 8149 Tower Junction PO Box 9056 Genesis Energy layout. Contact details are asfollows: easy to understand. Your feedback iswelcome onbothcontent and Genesis Energy hasworked to make thisreport informative and

03 ENVIRONMENTAL REPORT // 15 04 TEKAPO // 15 02 POWER SCHEME TEKAPO orographic rainfall effect induced bytheSouthernAlps. 503 mm(atanaltitudeof710masl). Thisclearly illustrates the of 1509masl)is5500mmcompared withLake Tekapo whichis Panorama Ridgeatthetop oftheGodley catchment (atanaltitude southeast oftheMackenzie Basin.Themeanannualrainfall at of rainfall whichdecreases rapidly from thenorthwest to the shadow created bytheSouthernAlps.There isasteep gradient Rainfall across theMackenzie Basinisinfluenced bythe rainfall 2.2 CLIMATE ANDPOWER GENERATION and stakeholder relationships for theTekPS. responsible for managingtheresource consents andcommunity An Environmental Team isbasedinChristchurch andis TekPS locally ifrequired inrare circumstances. or otheremergency situations.Thisteam can alsooperate the The Maintenance Asset Team isavailable 24/7to respond to faults Operator/Maintainer staff are basedatTekapo APower Station. consent limits). trend outsidetheirstandard operating limits(includingresource remote control andalerting operators whenvarious parameters system provides details onallaspectsofthescheme,enabling within theelectricity market rules. Acomplex operational control compliance with resource consent conditions andoperating optimise electricity generation requirements, while maintaining control centre operates theTekPS asefficiently aspossible, to Waikaremoana, Tongariro andTekapo Power Schemes.The24/7 Lake Taupo). TheRECCoperates three hydro power schemes; located attheTokaanu Power Station (atthesouthernendof Genesis Energy’s Renewable Energy Control Centre (RECC)is 2.1 OPERATING THETEKAPOPOWER SCHEME through afurthersixpower stations withintheWaitaki Catchment. with outflows entering Lake Pukaki.Thissamewater thenpasses waterline. Thestation ispowered bywater from theTekapo Canal However, nearly two thirds ofthepower station isbelow the Constructed onconcrete raft foundations, Tekapo Bis46mhigh. is connected to landviaa74mlong bridge. water. SittinginLake Pukaki,essentially asanisland,thestation only power station inNew Zealandcompletely surrounded by Commissioned in1977,Tekapo BPower Station (160MW)isthe impounds Lake George Scott, orcontinues to theTekapo River. the Tekapo Canalviaagate inthecontrol structure (Gate 17)that Tekapo River to Lake George Scott. Water can thenbereleased into When thecontrol gates are open,water flows down theupper released through theLake Tekapo Control Structure (Gate 16). Water inLake Tekapo can bypass Tekapo APower Station bybeing has amaximumdesignflow of130cubicmetres persecond (m Tekapo APower Station to Tekapo BPower Station. TheTekapo Canal In 1970a25.5kmcanal wasconstructed to take outflows from from water diverted from Lake Tekapo viaa1.4kmtunnel. an average of160Gigawatthours (GWh) ofelectricity peryear finally commissioned in1951. Tekapo A Power Station generates and materials were diverted to World War II.Thestation was began in1938butwashalted between 1942and1944aslabour Construction oftheTekapo APower Station (25Megawatts(MW)) river atState Highway8(SH8). head oftheTekapo River whichalsoforms thebridgeover the is dammedbytheLake Tekapo Control Structure (Gate 16)atthe Lake Tekapo isthesource ofwater for theentire TekPS. Thelake Cook andneartheLake Tekapo township. stations. Theschemeissituated close to themajestic Aoraki /Mt glacial-fed Lake Tekapo to generate electricity through two power Waitaki Valley intheMackenzie District anduseswater from the The Tekapo Power Scheme(TekPS) islocated attheheadof 02 TEKAPOPOWER SCHEME 3 /s). limits dueto highgeneration through thisperiod(Figure 2). of Lake Tekapo wasmaintained withinoperational andconsent During May2015theinflows were higherthannormalbutthe level Canterbury wasdeclared aregional drought area inFebruary 2015. matched usualseasonaltrends, althoughitisnoted thatSouth recorded. For theremainder oftheyear therainfall pattern approximately two thirds ofthetotal meanannualrainfall was July, November, April,MayandJune.Duringthesefive months The rainfall intheuppercatchment washighinthemonthsof to along term meanof503mm. recorded 82%oftheexpected annualrainfall at410mmcompared the Lake Tekapo gaugelocated neartheLake Tekapo township approximately 10%more thanthelong term average. Incontrast, Ridge rain gaugeintheMurchison catchment alsorecorded above average intheupperGodley catchment (Table 1).TheRose During thereporting period,rainfall wasapproximately 10% 133,250 households. enough electricity to power theequivalence ofapproximately the 1066GWh produced during thereporting periodwas household of8,000kWh/yr(Electricity Authority,2013:p1) Based onanaverage figure ofelectricity consumption per above thelong term average of964GWh. period. Generation for theTekPS duringthereporting periodwas total generation for theTekPS was1066GWh duringthereporting 136 GWh andTekapo BPower Station generated 930GWh. The During thereporting period,Tekapo APower Station generated remained through to theendofreporting period. recorded apeakof0.5msnow accumulation andthislevel has another significant snowfall event across the lower South Island at 0.5m,untilthesnow melted inearly October. On18June2015, reporting period’s snow accumulation. Snow accumulation peaked the reporting periodfell on2August 2014,addingto the2013/14 at thetop oftheGodley Catchment. Thefirst snowfall event of Genesis Energy alsorecords thesnow level atPanorama Ridge, Lake Tekapo Rose Ridge Panorama Ridge Eade Hut Monitoring Site FIGURE 2//Meandaily inflows for Lake Tekapo. TABLE 1//Rainfall duringthereporting period. Rainfall Total (mm) 4,360 6,156 5,266 410 Long Term Average (mm)

3,980 5,450 4,906 503

05 ENVIRONMENTAL REPORT // 15 06 TEKAPO // 15 03 TEKAPO LAKE Tekapo falls below 704.5masl. with theLake Tekapo CommunityBoard whenthelevel ofLake stakeholder agreement withMackenzie District Council,to liaise breached. GenesisEnergy alsohasresponsibilities undera required, ortheNationalSouthIslandminzones have been Commission determines thatreserve generation capacity is 701.8 maslbetween 1October and31March iftheElectricity However, thelevel ofLake Tekapo maybefurtherreduced to Tekapo isasfollows: vary throughout theyear. Theminimumoperating level ofLake 710.9 masl;however theminimumandmaximumoperating levels Lake Tekapo hasanormaloperating range from 702.1maslto crossing pointfor State Highway8over theTekapo River. head oftheTekapo River. Thecontrol structure alsoforms the is dammedbytheLake Tekapo Control Structure (Gate 16)atthe Lake Tekapo isthesole source ofwater for theTekPS. Thelake 3.1 LAKETEKAPOHYDROLOGY outflow ofLake PukakiandLake Ohau. the Mackenzie Plainsinawidestream before beingjoinedbythe the outflow ofLake Tekapo (the Tekapo River) meandered across Prior to thedevelopment oftheTekapo Power Scheme(TekPS), foods suchastuna(eel),weka andavariety ofwaterfowl. tribes) ofSouthCanterbury. Whãnautravelled to Tekapo to gather gathering area), particularly for thelocal NgãiTahu hapu(sub- Lake Tekapo (Takapõ) wasanimportant mahingakai(food glaciers retreated. Tekapo wasformed behindtheterminal moraine damasthe to bedeposited creating moraines thatdammedthevalley. Lake The movement oftheseglaciers caused large volumes ofrock Valley, outto thesloping plainsoftheMackenzie Country. in glaciers flowing from theSouthernAlps,through theGodley The last glacialmaximumapproximately 17,000years agoresulted lake includingtheGodley River, Macaulay River andCass River. silts are transported to Lake Tekapo viatherivers thatfeed the caused bysuspendedfinesiltscreated byglaciation.Thesefine of around 99km Lake Tekapo isapproximately 25.5kmlong andcovers anarea 03 LAKETEKAPO

FIGURE 3//Lake Tekapo andLake Tekapo Intake Structure. 1 October and31March –MinimumLevel of704.1masl. 1 Apriland30September –MinimumLevel of702.1masl;and 2 (Figure 3).Theturquoise colour ofthelake is

Lake Tekapo operating levels CRC905301.4(2) the minimumandmaximumcontrol levels. During thereporting periodLake Tekapo was100%compliant with period withmaximumandminimumcontrol levels overplotted. Figure 4shows thelevel ofLake Tekapo during thereporting Section 122oftheElectricity Industry Act2010”(spillrules). Rules (9November 1990),asmodifiedbyanorder pursuant to “Tekapo Power Scheme,AppendixA,Extracts ofWaitaki Operating of Lake Tekapo inaccordance withtheprovisions contained in Genesis Energy isalsorequired to control andoperate thelevel The maximumoperating levels for Lake Tekapo are asfollows: Lake George Scott Weir discharge CRC905309.4(8) spills whichoccurred duringthereporting period. of floodmanagement.SeeSection4.2.2 for adescriptionofminor reporting periodthiscondition wasnotexercised for thepurposes down rules for the instigation and stopping of the flows. During the conditions require Genesis Energy to follow ramp upandramp was 100%(Table 2).Duringperiodsofspill,resource consent period, compliance for maximumlake level ofLake Tekapo level; as measured at Lake George Scott Weir. During the reporting with thespillrules ifLake Tekapo isat or above maximumcontrol Maximum lake level compliance isalso determined bycompliance Parameter Level Minimum Lake Level Maximum Lake

reporting period. FIGURE 4//Lake Tekapo lake level compliance duringthe reporting period. TABLE 2//Lake Tekapo lake level compliance duringthe June andJuly –MaximumLevel of710.9masl. April andAugust –MaximumLevel of710.3masl;and March –MaximumLevel of710.0masl; September to February –MaximumLevel of709.7masl; Value (masl) 701.8 -704.1 709.7 -710.9 Compliance (%)

100 100

Consent Number

CRC905301.4 (2) CRC905301.4 (2) (condition)

07 ENVIRONMENTAL REPORT // 15 08 TEKAPO // 15 04 GEORGE SCOTT AND LAKE TEKAPO RIVER

River before discharging into theHaldonArmofLake Benmore. and Maryburnrivers. TheTekapo River converges withthePukaki spring fed flows andtributaries suchas Fork Stream, andtheGrays The Tekapo River isapproximately 45kmlong andisaugmented by Weir andcontinue down theTekapo River to Lake Benmore. 7). Water from Lake Tekapo can alsoflow over Lake George Scott Scott can bedischarged into theTekapo CanalviaGate 17(Figure Water spilled from Lake Tekapo andimpoundedinLake George Gate 16byaconcrete weir, creating Lake George Scott (Figure 6). The Tekapo River isdammedapproximately 2kmdownstream of capacity of850m commenced operation. Thegates have atotal consented discharge lake in1954,around three years after Tekapo APower Station steel radial gates thatwere constructed across theoutlet ofthe Control Structure (Gate 16)(Figure 5).Gate 16consists offive is dammedandcontrolled for hydro-electricity attheLake Tekapo The Tekapo River isthenatural outlet ofLake Tekapo, althoughit 04 TEKAPORIVERANDLAKEGEORGESCOTT FIGURE 5// FIGURE 6// Lake Tekapo Control Structure (Gate 16). Lake George Scott andLake George Scott Weir. 3 /s. SH8crosses thedamstructure atGate 16. River downstream ofGate 16inthefollowing circumstances: Structure (Gate 16).Typically water isonly spiltinto theTekapo Lake Tekapo into theTekapo River viatheLake Tekapo Control Genesis Energy can discharge upto 850m 4.1 LAKETEKAPOCONTROLSTRUCTURE Lake Tekapo Control Structure discharge CRC905304.3(3) in Table 3. maximum consented flow duringthe reporting periodasshown the Lake Tekapo Control Structure was100%compliant withthe Tekapo Control Structure andLake George Scott Weir. Flow from Figure 8presents flow data for the Tekapo River between theLake

FIGURE 7// reporting period. FIGURE 8// When themaximumoperating level ofLake Tekapo hasbeen To top-up Lake George Scott withthepurposeofstoring For recreational release purposes;or If there isanoutage event attheTekapo APower Station and sufficient to reduce the level ofLake Tekapo; reached andthecapacity oftheTekapo APower Station isnot generation capacity. or inrare circumstances to augmentTekapo B Power Station incase oftheloss ofgeneration atTekapo A, water to enable uninterrupted generation from Tekapo B Tekapo BPower Station; Genesis Energy still wantsto generate electricity atthe

Gate 17. Flow viatheLake Tekapo Control Structure duringthe

3 /s ofwater from

09 ENVIRONMENTAL REPORT // 15 10 TEKAPO // 15 requires flows to be ramped up anddown duringspill events. were dueto atechnical non-compliance withthespill rules, which compliant (Table 4).Non-compliance events withflow over the weir the reporting periodLake George Scott Weir flow was99.98% down theTekapo River (Figure 9).Asnoted inSection4.2.1,during Flow above thespillcrest ofLake George Scott Weir, results inspill Industry Act2010”. modified byanorder pursuant to Section122oftheElectricity A, Extracts ofWaitaki Operating Rules (9November 1990),as the provisions contained in“Tekapo Power Scheme,Appendix water underthisconsent isalso managedinaccordance with Tekapo River over theLake George Scott Weir. Thespillingof Genesis Energy maydischarge upto 600m 4.2.2 LAKEGEORGESCOTT WEIRDISCHARGE Lake George Scott Control Weir CRC905306.3(2) compliant (Table 4). and associated flow over Lake George Scott Weir was99.98% During thereporting periodtheLake George Scott maximumlevel George Scott isdetermined bycompliance withthespillrules. spill occurs down theTekapo River. Themaximumlevel ofLake period. Once themaximumlevel ofLake George Scott isexceeded, Figure 9shows thelevel ofLake George Scott duringthereporting masl whichisalsothelevel ofthespillcrest oftheweir. Genesis Energy operates Lake George Scott to alevel of684.05 4.2.1 LAKEGEORGESCOTT CONTROLWEIR 4.2 LAKEGEORGESCOTT Parameter Maximum Flow Parameter Level Maximum Lake Maximum Flow FIGURE 9// compliance duringthereporting period. TABLE 4//Lake George Scott lake level andweir flow compliance duringthereporting period. TABLE 3//Flow viatheLake Tekapo Control Structure Lake George Scott lake level duringthereporting period. Value (m Value (msl)

684.05 850 600 ³ /s) Compliance (%) Compliance (%) 99.98 3 100 /s ofwater into the Consent Number Consent Number CRC905304.3 (3) CRC905306.3 (2) CRC905309.4 (3) (condition) (condition) Recreational releases were requested by,andprovided for; During thereporting period,there were 17recreational releases. which recreational releases are managed. of Canterbury RegionalCouncil)istheguidingdocumentunder NZ andtheTekapo Whitewater Trust (andwiththeagreement the stakeholder agreement between GenesisEnergy, Whitewater (Condition 13a–d)stipulates criteria for recreational releases, 16 andLake George Scott. While resource consent CRC905301.4 from Gate 16to kayak ontheupperTekapo River between Gate diversion from theTekapo River. Kayakers alsousewater released water released from Lake Tekapo andistaken into thecourse by course in1998located nearLake George Scott thatutilises The Tekapo Whitewater Trust constructed arecreational canoe Kayaking ontheTekapo River isapopularrecreational activity. 4.3 RECREATIONAL RELEASES Lake George Scott Weir discharge CRC905309.4(8) ensure they are still inplace andingoodcondition. and are maintained annually, priorto thesummerseason,to between theLake Tekapo Control Structure andLake Benmore are alsoerected atpublicaccess pointsalong theTekapo River Signs warningofthefluctuationsin level ofthe Tekapo River Genesis Energy andCanterbury RegionalCouncil. These events were considered to beminornon-compliances by environmental effects resulted from theseminorspillevents. the reporting periodequated to 1hour43minutes. Noadverse minutes). Thetotal combined duration ofallsixspillevents during of nogreater than2.95m the Lake George Scott Weir. Allevents involved smallvolumes operations, sixsmallspillevents occurred dueto overtopping of During thereporting period,asaresult ofTekapo Power Scheme slalom course. future maintenance andupgrade requirements oftheTekapo arrangements inthetrust agreement, includingthesupportof White Water Trust andWhite Water New Zealandto coordinate During thereporting periodGenesisEnergy metwiththeTekapo Lake Tekapo operating levels CRC905301.4(2) overview oftherecreational releases duringthereporting period. some oftheevents heldontheTekapo River. Table 5provides and Zealand training camp. Figures 10and11show paddlers during South IslandSlalom ChampionshipsandaCanoeSlalom New Canoe Club.Recreational releases were alsoprovided for the Otago University CanoeClub,andtheChristchurch White Water MacKenzie College, CumecMagazine,Tekapo Throwdown, the 3 /s andwere short-lived (less than35

16 openingto thestart ofGate 16closing). Ittakes approximately 15minutes for flow to reach both18m *Actual Average Flow iscalculated from whentheflow has reached the required level (release duration is calculated from the start ofGate 2-Nov-14 1-Nov-14 28-Oct-14 Date 18-Dec-14 13-Dec-14 20-Dec-14 19-Dec-14 21-Dec-14 10-Mar-15 3-Mar-15 15-Mar-15 14-Mar-15 21-Mar-15 17-Mar-15 16-Mar-15 24-Mar-15 22-Mar-15 (photo: MacMacMillan). Championship ontheTekapo CanoeCourse, March 2015 FI TABLE 5// GURE 10// Recreational releases inthecanoe course andupperTekapo River duringthereporting period.

Alan Hoffmancompeting intheSouthIslandSlalom of Release Required Duration (hours) 7 6 7 2 6 6 6 6 2 6 2 6 6 2 7 6 2 16 wasopenat Duration Gate required flow or above the (hours) 5.5 7.5 8.5 4.5 2 6 7 6 2 6 2 6 6 7 2 2 6 Required Flow

(m 3 /s) 30 18 18 18 18 18 18 30 18 30 18 18 18 40 18 40 18 Actual Average Flow* (m 30.98 21.08 21.06 21.81 21.09 21.09 20.76 23.76 30.56 23.44 21.75 40.56 19.35 wave oftheTekapo CanoeCourse (photo: MacMacMillan). FI 21.1 21.8 3 GURE 11// /s) 31 40 Full compliance. Gates closed early onrequest ofkayakers. Full compliance. Gates closed early onrequest ofkayakers. Full compliance. Gates closed early onrequest ofkayakers.

Courtney Kerinfrom Oamaru,‘looping’ onthefront Full compliance. Release notattended bykayakers. 3 /s and30m 3 /s from zero flow. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance. Full compliance Full compliance Compliance

11 ENVIRONMENTAL REPORT // 15 12 TEKAPO // 15 05 POWER STATION AND TEKAPOB TEKAPO CANAL POWER STATION TEKAPO A

Lake Tekapo water take CRC905302.3(3) occurred dueto aplannedmaintenance activity. 9 September and8October 2014,asillustrated inFigure 13, The cessation offlow through the Tekapo A Power Station between result in any adverse environmental effects. reached 130.6 m³/sduringcontrol system testing anddidnot reporting period.Thisoccurred on8July 2014when theflow flow of130m Tekapo APower Station flow wasbelow themaximum consented the flow was 99.99% compliant duringthe reporting period. into Tekapo APower Station isshown inFigure 13.Table 6shows The flow from Lake Tekapo viatheLake Tekapo Intake Structure km long tunnel. the conveyance ofwater to theTekapo APower Station viaa1.4 the west ofLake Tekapo township. Theintake structure enables 12). Thisintake structure islocated inthebedofLake Tekapo to electricity power generation attheTekapo APower Station (Figure Lake Tekapo viatheLake Tekapo Intake Structure, for hydro- Genesis Energy can take anddivert upto 130m 5.1 TEKAPOAPOWER STATION MW generators atTekapo BPower Station. and Tekapo BPower Station. Two Francis turbinesdrive two 80 The water flows into aheadpondbefore entering thepenstocks Stream, IrishmanCreek andMaryburnStream. are accommodated byculverts underthecanal, includingForks Tekapo Canalpasses over anumberofnatural waterways which Tekapo Canal,whichhasamaximumcapacity of130m Outflows from Tekapo A Power Station enter the25.5km long generator driven byasingle Kaplanturbine. can accommodate. Tekapo APower Station hasasingle 27MW requires flows to change faster thanwhattheflow inthetunnel accommodate flow differences whenthepower station operation The tunnelterminates inasurge chamberwhichisdesignedto station andpasses itthrough a6mdiameter, 1.4kmlong tunnel. structure for Tekapo APower Station draws water for thepower Situated onthesouthernforeshore ofLake Tekapo, theintake AND TEKAPOBPOWER STATION 05 TEKAPOAPOWER STATION, TEKAPOCANAL FIGURE 12//Tekapo APower Station. 3 /s for allbutonehalfhourperiodduringthe 3 /s ofwater from

3 /s. The Tekapo River water take CRC905308.2 (3) Tekapo River diversion (Gate 17)CRC905307.2(3) period (Table 7). 17. Flow through Gate 17was100%compliant for the reporting Tekapo River into the Tekapo Canal via Lake George Scott and Gate Figure 15shows theflow atGate 17thatdiverts water from the 17 (located between Lake George Scott andtheTekapo Canal). Gate 17(Figure 14).Therate offlow ofwater ismeasured atGate of 130m Genesis Energy can divert andtake water upto amaximumrate 5.2 TEKAPOCANAL Parameter Maximum Flow Structure duringthereporting period. FIGURE 13// FIGURE 14// Structure compliance duringthereporting period. TABLE 6//Tekapo APower Station flow viaLake Tekapo Intake 3 /s from theTekapo River into theTekapo Canalthrough Tekapo APower Station flow viaLake Tekapo Intake Tekapo Canal.

Value (m 130 ³ /s) Compliance (%) 99.99 Consent Number

CRC905302.3 (3) (condition)

13 ENVIRONMENTAL REPORT // 15 14 TEKAPO // 15 (Table 8). both theflow rate andthe10day volume for the reporting period Flow abstracted from theTekapo Canalwasfully compliant for Figure 17shows thevolume abstracted from theTekapo Canal. Figure 16shows theflow abstracted from the Tekapo Canaland stock water andto irrigate landadjacent to theTekapo Canal. ten dayperiod.Thisconsent isutilisedbyathird partyto provide maximum rate of0.34m³/sandatotal volume of88,130m³inany Genesis Energy can take water from theTekapo Canalata 5.2.1 STOCK WATER ANDIRRIGATION TAKE Parameter Maximum Flow FIGURE 16// reporting period. FIGURE 15// compliance duringthereporting period. TABLE 7//Flow from Tekapo River into Tekapo Canal Flow rate from Tekapo Canal. Flow from Tekapo River into Tekapo Canalduringthe Value (m 130 ³ /s) Compliance (%) 100 Consent Number CRC905308.2 (3) CRC905307.2 (3) (condition) Pukaki viatheTekapo BPower Station (Figure 18). discharge water upto amaximumrate of130m Resource Consent CRC905320.2allows GenesisEnergy to 5.3 TEKAPOBPOWER STATION Stock water andirrigationtake CRC951545.2(1) compliance have occurred. measures have beenimplemented nofurtherinstances ofnon- and thethird partyutilisingtheresource consent. Since these volumes, whichincludee-mailalerts to bothGenesisEnergy staff put inplace processes to enable greater visibilityofthewater take pipe, sothat340l/scannot bebreached. GenesisEnergy hasalso installed aplate ontheintake to limittheflow rate through the not breached again.Duringthereporting period,GenesisEnergy the implementation of measures to ensure theconsent limitsare In response to thenon-compliances, Genesis Energy prioritised Council assoonthesenon-compliances were identified. self-reported allnon-compliances to theCanterbury Regional gone to publication. AsperGenesisEnergy’s policy,thecompany were identifiedafter the2013/14annualenvironmental report had the maximumallowable volume andrate. Thesenon-compliances 22 November 2013and2March 2014,where thetake exceeded separate instances ofnon-compliance whichoccurred between During the2013/14reporting periodGenesisEnergy identifiedsix Parameter Maximum Flow Volume 10 DayMaximum FIGURE 17// TABLE 8//Flow rate and10Dayvolume from Tekapo Canal. Abstraction volume from Tekapo Canal. Value (m 88130 0.34 ³

/s) Compliance (%) 100 100 3 /s into Lake Consent Number CRC905320.2 (3) CRC951545.2 (1) (condition) well understood. To better understand thisrelationship, Genesis bodies andinto thesurrounding groundwater system wasnot of leakage from theTekapo Canalto adjacent surface water to beaccurately calculated, andtherefore therelative contribution area, thequantityofleakage from the Tekapo Canalwasnotable Due to thecomplex ground andsurface water interactions inthe further details ontheTekapo CanalRemediationProject. 2013/14 Tekapo Power SchemeAnnualEnvironmental Reportsfor length ofcanal repaired was6.3km.Refer to the2012/13and re-lined three sectionsoftheTekapo Canal(Figure 20).Thetotal During thesummers of2012/13and2013/14,GenesisEnergy 5.4 GROUNDANDSURFACE WATER MONITORING Tekapo BPower Station discharge CRC905320.2(3) period (Figure 19)andwastherefore100% compliant (Table 9). the maximumconsented flow for theduration ofthe reporting Flow into Lake PukakiviaTekapo BPower Station remained below Parameter Maximum Flow during thereporting period. FIGURE 19// FIGURE 18//Tekapo BPower Station andLake Pukaki. compliance duringthereporting period. TABLE 9//Flow into Lake Pukaki viaTekapo BPower Station Flow into Lake PukakiviaTekapo BPower Station Value (m 130 ³ /s) Compliance (%) 100 Consent Number CRC905320.2 (3) (condition)

being monitored adjacent to theSH8sectionofTekapo Canal During thesummerandautumnofreporting period,the ponds canal remediation works. attributed to seasonalvariations, notchangesasaresult ofthe Tekapo Canalwasre-lined inthissection.Anyfluctuations were surface water levels remained stable prior,duringandafter the the Tekapo Canal(Figure 21)hasshown, thatoverall ground and Monitoring undertaken adjacent to theMaryburnFillsectionof the results ofwhichare describedhere. monitoring report Pattle Delamore Partners (2015)inJune2015, Delamore Partners, 2012).GenesisEnergy received thefinal the ground andsurface water monitoring programme (Pattle In April2015allmonitoring wascompleted inaccordance with programme includedmeasurements of: the re-lining ofsectionstheTekapo Canal.Themonitoring fluctuations to determine ifanychanges could beattributed to monitoring programme wasto measure ground andsurface water The purposeofGenesisEnergy’s groundwater andsurface water the vicinityofremediation works. prior to, during,andafter theTekapo CanalRemediationProject in Energy actively monitored groundwater andsurface water levels Kurow flow station. mean flow is calculated from themeanMayflow atthe Waitaki at flow duringthemonthsofJune to September. The FishandGame Energy alsocontributes to aFish andGamerequired minimum with a pre-defined minimum volume of water each month. Genesis Under theWMA,GenesisEnergy is required to supply Lake Pukaki 5.5.1 THEPUKAKISUPPLY FLOW Catchment. relationships thatexist between thetwo companies intheWaitaki of theTekapo Power Scheme to definetheoperational inter- and MeridianEnergy wasreached aspartofthesale andpurchase A Water ManagementAgreement (WMA)between GenesisEnergy purpose ofelectricity generation. rivers andcanals throughout theWaitaki River Catchment for the take, transfer, discharge andusewater viainterconnected lakes, Genesis Energy andMeridianEnergy holdresource consents to 5.5 WATER MANAGEMENT AGREEMENT largely driven byseasonalinflow fluctuations. monitored inrelation to theTekapo CanalRemediationProject are summarise thatanychangesingroundwater andsurface water groundwater andsurface water. Pattle Delamore Partners (2015) water levels relative to thenatural variations inthesurrounding have hadminimaleffect onsurrounding groundwater andsurface section through theseepspriorremediation works appears to indicates thattheamountofwater leaking form theSH8canal be affected bythereduction inwater flow from theseeps.This the receiving groundwater andsurface water doesnotappearto neighbouring groundwater monitoring wells andpondsshows have reduced water flow from someseeps,thedata from the remediation work undertaken ontheSH8canal sectionmay Pattle Delamore Partners (2015)alsoconclude thatwhile the increased inflows. have now recovered following increased rainfall andconsequently levels andsurface water inflows. The levels oftheSH8ponds an annualseasonalresponse to natural declinesinground water concluded that thedeclineinwater levels intheSH8pondswas drought conditions declared. Pattle Delamore Partners (2015) fell to low levels. Thesummerwasparticularly dry,withregional

Flows from weirs adjacent to theTekapo Canal. Changes inleakage pointobservations (seeps)from the The flow inthree streams whichpass underthe Tekapo Canal The water levels ofponds(oldborrow pits)adjacent to the Groundwater levels from sixpiezometers installed adjacent to external embankments oftheTekapo Canal,and; within theSH8andMaryburnFillsectionsofTekapo Canal; SH8 andMaryburnFillsectionsoftheTekapo Canal; the three de-watered sectionsoftheTekapo Canal;

15 ENVIRONMENTAL REPORT // 15 16 TEKAPO // 15 ground andsurface water monitoring programme. FI GURE 21// FIGURE 20//

Flow gaugingtheMaryburnStream aspartofthe Re-lined sectionsoftheTekapo Canal. during thereporting period. Genesis Energy wascompliant undertheWMAfor eachmonth Lake Pukakiandthevolume GenesisEnergy suppliedeachmonth. Table 10outlinestherequired volume ofwater to besuppliedto flow was required from GenesisEnergy. During thereporting period,noadditionalFishandGamesupply September 2014 Month June 2015 May 2015 April 2015 March 2015 February 2015 January 2015 December 2014 November 2014 October 2014 August 2014 July 2014 Management Agreement. TABLE 10//Total monthly Pukakisupply flow undertheWater additional Fish&Game Required Volume (plus flow required) (Mm 88.00 (0) 86.78 (0) 88.39 (0) 89.04 (0) 95.75 88.39 88.66 79.83 91.60 97.49 92.28 89.06 3 ) Supplied Volume 268.00 272.00 267.00 230.00 238.00 232.00 188.00 155.00 109.00 207.00 276.00 280.00 (Mm 3 ) Compliance 100 100 100 100 100 100 100 100 100 100 100 100 (%) discuss operational matters. requirements. Genesis Energy meetwithMCAS staff regularly to lease agreement requirements andMCAS’s resource consent Tekapo Canal,andmanagetheiroperations inaccordance with the lower Tekapo Canal.MCAS have atotal of11rafts inthe Salmon Ltd(MCAS), whofarm Chinook(orKingSalmon)in Genesis Energy hasalease agreement withMountCookAlpine 5.6 MOUNTCOOKALPINESALMONFARM control level andposeafloodriskfurtherdownstream. thresholds andtherefore unlikely to increase above themaximum to thelevels ofLake Tekapo andLake Pukakibeingbelow risk as aresult ofhighlake levels orforecast inflows. Thiswasdue During thereporting periodthere were noHiCOGmeetingsheld out data transfer testing andrefine communication protocols. annually priorto thehighinflow period, to clarifyprocedures, carry data sharing.GenesisEnergy andMeridianEnergy generally meet Council floodmanagers to discuss communication protocols and management hasincludedmeetingswithCanterbury Regional Work between thepartiesinpreparation for effective flood plant andstructures; andto review and auditafter highflow events. adverse effects ofhighflow events onpeople, theenvironment, flow response; to manageeffectively, as far aspracticable, the transfers; for communicating andcoordinating apre-emptive high communicate between thepartiesto enable data andinformation Flow ManagementCoordination Group (HiCoG)wasestablished to integrated mannerbyGenesisEnergy andMeridianEnergy. AHigh The WMAsetsouthow highflow events willbemanagedinan 5.5.2 HIGHFLOW MANAGEMENT COORDINATION GROUP

17 ENVIRONMENTAL REPORT // 15 18 TEKAPO // 15 06 OUTCOMES SCHEME-WIDE period. Wrybillproductivity wasagain highandasmallcolony of nested successfully on theTasman River duringthereporting River duringthetern breeding season.Blackfronted terns again was carried outto remove blackbacked gullsfrom theTasman and eggpredation byblackbacked gulls,acontrol programme for terns inprevious years. Following confirmation ofchick cameras were placed attern nests following highmortality rates fronted tern productivity wasmonitored andmotionactivated continue to beremoved eachyear. Thisseasonwrybillandblack in theriverbed since 2006andlarge numbers ofpredators ongoing. Over 1,000killandlive capture traps have beendeployed funded byPRRandthekaki/blackstilt recovery programme, is Catchment scale predator trapping in theTasman River, jointly evaluating theproject in2016. next year to achieve operational efficiencies, before formally re- anywhere inthecountry. PRRwillbelooking to repeat this result four consecutive years for ablackfronted tern colony, recorded are encouraging andrepresent thebest breeding results over resulted inanothergoodtern breeding season.Theseresults hedgehogs, possums, rats andrabbits usingtraps andtoxins has this season.Control offeral cats, ferrets, stoats, weasels, improve breeding outcomes ofblackfronted terns hascontinued PRR’s success withintensive predator work intheOhauRiver to Tasman, Lower Ohau,Ahuriri,Forks andupperTekapo rivers. willows, lupins,andothertarget weeds in theGodley, Cass, person hours were spentbycontractors andPRRstaff removing weeds atlow densities atstrategically important sites. Over 3,800 preventing theestablishment ofnew weed incursions andkeeping quality for arange ofbraided river plantsandanimalsby This year PRR’s core focus continued to bemaintaining habitat understanding ofbraided river ecosystems. rivers andassociated wetlands; andbuildingknowledge and predator control; increasing publicawareness ofbraided include: theremoval ofweeds; exploring wetland protection; years. Key objectives ofPRRduringthecurrent Strategic Plan PRR operates under aStrategic Planthatisupdated every seven and wetland ecosystems intheUpperWaitaki Basin. and enhancinghabitat andecological communities inriver beds, management andresearch programme focussed onmaintaining (13%) underacompensatory agreement. PRRisanecological PRR isfundedbyMeridianEnergy (87%)andGenesisEnergy restore rivers andwetland ecosystems intheUpperWaitaki Basin. (DOC) programme established in1990thataimsto protect or Project River Recovery (PRR)isaDepartmentofConservation OF CONSERVATION 6.2 PROJECT RIVERRECOVERY –DEPARTMENT understand thecultural context withinwhichtheTekPS operates. Runanga andTe RunangaoNgãiTahu representatives, to better During thereporting period,afurthersite visitwasconducted with Energy identifyopportunitiesto work together inthefuture. will inform theassessment andhelptheRunangaGenesis Tekapo Canal.Anumberofsites were visited andthedata collected Tekapo River, Tekapo Canalandthetributaries thatpass underthe within theextent of theTekPS, includingLake Tekapo andthe In the2013/14reporting period,theinitialfield work was completed collaborative working relationship. This provides aplatform for thepartiesto develop anongoing may potentially beimpacted bytheactivitiesofGenesisEnergy. identifying specificcultural values, interests and associations that around theTekapo Power Scheme(TekPS). Thestudy includes build ontheunderstanding ofthecultural significance ofthearea in partnership withGenesisEnergy, embarked onaproject to Arowhenua, Te Runanga o Waihao and Te Runanga o Moeraki have, of theWaitaki. Asrepresentatives ofmanawhenua,Te Runangao areas andoceans around Te Wai Pounamu, includingthewaters Ngãi Tahu hasalong association withthewaterways, coastal 6.1 CULTURAL HEALTH ASSESSMENT 06 SCHEME-WIDEOUTCOMES

materials; includingposters, fieldguides,information pamphlets, awareness initiatives viathedistribution ofbraided river resource Additional ongoingwork duringtheyear includedpublic egg nest wasnotsuccessful, andtheeggswere probably infertile. Zealand -thenearest breeding sites are inChina!Thepair’s four ever recorded nesting attempt ofthisAsianbird speciesinNew Tasman River for thefirst time(Figure 22).Thisisonly thethird successfully. Apairofwhite-winged blackterns nested onthe threatened black-billed gullshadincreased innumberandnested storage inNew Zealand’s seed-bankinPalmerston North. to grow. Kew Gardens have collected seedsfrom theseplants for periods oftimeandthatitmayneed specialclimaticconditions Some botanists believe that theseedsmaylaydormantfor long dark brown incolour (Figure 23). At Ruataniwha there were more than10,000individualplants,all grows inephemeral wetlands; wetlands thatdryoutover summer. and isabrown (orgreen) star-shaped flatgrowing annualthat Heron. Theplantspeciesiscalled Dysphaniapusilla(smallfathen) same timeitwasalsofound intheClarence River andnearLake extinct for almost 60years wasrediscovered byDOCstaff. Atthe At Ruataniwha wetlands aplantspeciesthatwasbelieved to be river ecosystems. examines values, humanimpactsandmanagementofbraided support astudent/teacher resource to secondary schoolswhich and ariver-care code. PRRalsocontinues to distribute and Tasman River (photo: DepartmentofConservation). FIGURE 22// wetlands (photo: DepartmentofConservation). FIGURE 23// A pairofwhite-winged blackterns nesting onthe Dysphania pusilla(smallfathen) attheRuataniwha

19 ENVIRONMENTAL REPORT // 15 20 TEKAPO // 15 the weir work undertaken duringMarch 2015(Figure 25). spawning inthebedofScott’s Creek asadirect consequence of sizes. Duringthereporting period FishandGameobserved trout to estimate pre and post enhancement adulttrout population works are beingmonitored through amark-recapture programme overall benefits to angling oftheScott’s Creek andOutlet Creek wider area ofstreambed withgoodspawningcharacteristics. The successful atreducing superimpositionofspawningbyproviding a Weirs have beenbuiltfor thelast sixyears andhave beenhighly enhanced stream sections. the spawningseason(Aprilto October) to monitor trout useofthe boulders (Figure 24).Several surveys willbecarried outduring the creek bankwasnarrowed andprotected bytheplacement of constructed ontheday, andinadditionto thisaround 100mof two GenesisEnergy staff members. Around 100weirs were volunteers turnedupto help outonthework day,including season were reinstated, andnew weirs addedasrequired. Twenty (Saturday 28March 2015)whenweirs from theprevious spawning 2015), theLake Alexandrina Conservation Trust heldawork day After thediggergrooming work hadoccurred (25-27March concrete blocks. weirs are created byhand,usingacombination ofrocks and velocity inorder to enhance conditions for trout spawning.The last five years artificial weirs have been created toincrease flow combination withthegrooming works atScott’s Creek, inthe characteristics for trout spawningneedto bemaintained. In the distribution ofspawning,theprecise depthandvelocity Scott’s Creek hasaflow ofaround 80l/sand to maximise Creek, completed in March 2011, also requires annual maintenance. and itsquality,declines.Asimilarregravelling project ontheOutlet trout spawnonthehumpsandtotal area ofspawninghabitat, spawning. Ifthestreambed isleft too long before grooming the removes humpsandhollows created duringtheprevious season’s Since thenannualgrooming ofthestreambed withasmalldigger to reinstate around two-thirds ofthestream’s spawning area. The lower 600mofScott’s Creek wasregravelled during2005 Outlet Creek. only inflowing stream, Scott’s Creek, as well asthelake’s outflow, rainbow trout fisherybyimproving spawninghabitat inthelakes underway since the1980sto maintain andenhance thebrown and Alexandrina FisheryEnhancement Project. Thiswork hasbeen has assisted FishandGamewithfundingto managetheLake off theMackenzie State Highway. Since June2011,GenesisEnergy huts onitsshores andvisitsbycountless tourist anglers detouring Lake Alexandrina isasignificant trout fisherywith over 200fishing PROJECT –FISHANDGAME 6.3 LAKEALEXANDRINAFISHERYENHANCEMENT FIGURE 24// Scott’s Creek boulderplacement (photo: FishandGame).

District Council(MDC)whichcovers theprovision offundingfor Genesis Energy hasarelationship agreement withMackenzie 6.4 MACKENZIE DISTRICT COUNCILAGREEMENT Power Station (Figure 26). Gate 17Control Structure, Tekapo BHeadpondandTekapo B including new signageinstalled along theupperTekapo River, include features aimedatenhancingvisitor experience andsafety, south (trueleft) sideoftheTekapo Canal.Thenew arrangements the Lake Tekapo township along thefulllength oftheroad onthe Scott, nearGate 17.Theseimprovements allow publicaccess from and anew bicycle 'squeeze'barrierfitted alongside Lake George incorporated, includingtheinstallation ofnew gates along Gate 17 During thereporting period,furtheraccess enhancements were adjacent landholders, andMountCookAlpineSalmonemployees. cyclists, pedestrians, GenesisEnergy employees andcontractors, enhanced thesafety ofthecanal road for recreational users, The restriction ofthrough-traffic implemented inJune2014has SH8 whentravelling between Lake PukakiandLake Tekapo. prevent vehicles from usingtheTekapo Canalasanalternative to and for 4kmupfrom theTekapo BPower Station. Gates now access along thecanal for 7kmdown from Tekapo APower Station Recreational users oftheTekapo Canalcontinue to have vehicle for through traffic. sections oftheTekapo Canal,butnolonger allows vehicle access continued access for anglers andtourists to thelower andupper arrangement for theTekapo Canal(June2014),thatenables with thecommunity, GenesisEnergy implemented anew traffic However, following anindependenttraffic review and consultation once againable to dosoalong thelength oftheTekapo Canal. cycling andfishinginthisuniquepartofNew Zealand were completed, Themanypeople thatpreviously enjoyed walking, In 2014theextensive Tekapo Canalremediation works were 6.5 TEKAPOCANAL ROAD ACCESS the reporting period. for theLake Alexandrina causeway orboatramp facilities during accordance withtheagreement. MDCdidnotrequest anyworks During thereporting periodGenesisEnergy metwithMDCin causeway andLake Tekapo boatramps. of GenesisEnergy’s lake level operations ontheLake Alexandrina the Lake Tekapo township andappropriately managingtheeffects left of theweir (photo: FishandGame). FIGURE 25// Trout redd (nest) intheclear gravel excavated to the confinement tank. leakage inthestorage tank would becontained withintheouter any minorspillsthatmayoccur. Asthetank isdouble skinned,any required to have anemergency oilspillkitonhandto dealwith filling ofthe tank. Duringfillingofthe tank,maintenance staff are sufficient bunding to contain minorspillswhich could occur during rainwater. Thenew tank hasincreased seismicresistance and original bundalsohadnomeansofeasily removing accumulated hold thefullvolume ofdieselfuelshouldthetank rupture. The was rusting andthebundaround thetank wasinadequate to was replaced withanew double skinnedtank. Theoriginaltank The standby dieselgenerator fueltank atTekapo BPower Station 6.6.3 DIESELGENERATOR FUELTANK AT TEKAPOB of non-compliance. simplify operation oftheschemeandsignificantly reduce therisk to incorporate alloperating andresource consent requirements to and Gate 17.Thecontrol system code hasbeentotally re-written the last two years iscurrently beingextended to includeGate 16 The control system installed attheTekapo Power Stations over 6.6.2 CONTROLSYSTEM Tekapo Boilinterceptor discharge CRC950298.2(2,3,4) Tekapo Aoilinterceptor discharge CRC950297.2(2,3,4) of oilandgrease atbothTekapo AandTekapo B. May 2015alsoconfirmed anacceptable level of less than6mg/L at bothTekapo AandTekapo B.Samples taken andanalysed in confirmed an acceptable level of less than 5 mg/L of oil and grease Discharge samples taken andanalysed in November 2014 discharge isanalysed for oilandgrease. clear. Atsix-monthly intervals arepresentative sample ofthe both interceptors withthewater discharge remaining clean and inspections result insmallquantitiesofoilbeingremoved from in theinterceptors are removed immediately. Themajorityof interceptors are inspected monthly andanyhydrocarbon present the oilinterceptors atTekapo AandBPower Stations. Theoil Genesis Energy isrequired to undertake avisualinspectionof 6.6.1 OILINTERCEPTOR INSPECTIONS undertaken around theTekPS; eachactivityisdescribedbelow. During thereporting period,anumberofmaintenance projects were 6.6 MAINTENANCEACTIVITIES high winds,create potentially hazardous situations. Energy operational requirements orprevailing conditions, such as to close theroad atanytimeinthefuture to users shouldGenesis As hasalways beenthecase, GenesisEnergy willreserve theright FIGURE 26//Signageandupgraded safety barriers installed atGate 17.

further plantingofnative speciesisplannedfor spring2015. and hares (Figure 27).Due to thesuccess ofthenative plants, protected byplastic ‘plantguards’ to prevent browsing byrabbits adjacent to aspringfed wetland withinthesite. Thenew plantsare Christchurch’s Environmental Team planted over 200native plants, Genesis Energy’s Tekapo Operation andMaintenance Team and biodiversity surrounding theTekapo APower Station. Staff from A plantingdaywasalsoundertaken to enhance thenative investigating alternative plantingsinthisarea. survive thedrought conditions through summer. GenesisEnergy is re-planted withLeyland Cyprus.Anumberofthesetrees didnot During thereporting periodsomeofthecleared areas were the Tekapo APower Station road. issue for GenesisEnergy staff, contractors, visitors andusers of forming duringwinter. Thiscreated asignificant healthandsafety shading theroad andtheTekapo Acar parkresulting inice the Tekapo CanalonTekapo Power HouseRoad.Thetrees were around Tekapo APower Station andalong theslope facing towards removal ofanumberpinetrees, located onthehillandterraces During the2013/14reporting periodGenesisEnergy undertook the 6.6.4 TEKAPOAPLANTINGS FIGURE 27//Native plantingnearTekapo APower Station.

21 ENVIRONMENTAL REPORT // 15 22 TEKAPO // 15 with theNZSOLDDamSafety Guidelines2000.AComprehensive out for theTekapo AandTekapo BPower Stations, inaccordance During thereporting periodAnnualDamSafety Reviews were carried Safety Guidelines. Genesis Energy willcontinue to apply theNZSOLD(2015)Dam to progress bringingdamsafety into theRMA.Inmeantime, no indication ofawork programme for Government departments been revoked witheffect from 30June2015.There iscurrently Act. Assuch,theBuilding(DamSafety) Regulations2008have the Resource ManagementAct(RMA)rather thantheBuilding decided thatdamsafety isbetter suited to beingmanagedunder number ofoccasions over recent years. TheGovernment hasnow the Government’s DamSafety Schemehasbeendelayed ona The introduction ofnew damsafety regulations to implement Safety Guidelines. accordance withtherecommendations of the NZSOLD(2015)Dam civil, mechanical andelectrical engineeringexperts, againin the dams’ Potential ImpactCategory andinvolves independent appurtenant structures iscarried outatintervals basedon A Comprehensive Safety Review (CSR)ofthedamsandassociated Review reports are available onrequest. Safety Guidelines.CopiesoftheMonthly andAnnualDamSafety professional engineers assuggested bytheNZSOLD(2015)Dam An AnnualDamSafety Review iscarried outbyspecialist which isinternally reviewed byanengineer. and provides GenesisEnergy withamonthly damsafety report, locations. Anexperienced professional engineerreviews thedata assets are inspected anddata iscollected atanumberof inspections atpre-determined intervals. Onamonthly basis, Dam safety surveillance involves routine monitoring and Guidelines 2000. guidelines GenesisEnergy followed theNZSOLDDamSafety the hydraulic structures oftheTekPS. Priorto theupdated 2015 provides thecurrent framework for managingandmonitoring published bytheNew ZealandSocietyonLarge Dams(NZSOLD) Construction andSafety. TheDamSafety Guidelines(2015) The BuildingActcontains extensive provisions for Dam 6.7 DAM SAFETY structure crossing) Gate 16(SH8control Power Station Tekapo A Station vicinity Tekapo APower Location TABLE 11//

Publiccomplaints duringthereporting period. of timesthesiren wasbeing activated. phoned GenesisEnergy with concern over thenumber of impendingflow changes.Amember of thepublic installed to warnpeople intheUpper Tekapo Riverbed triggered asiren to soundseveral times,whichis the release ofwater from Gate 16. The release ofwater TekPS communications testing. Thetesting involved On 28June2015,GenesisEnergy wasundertaking experience (anInternational DarkSkyReserve). Station wasinterfering withtheTekapo nightsky a brightlightemanatingfrom theTekapo APower photos from amemberofthepublicexplaining that During December 2014,ane-mailwasreceived with Regional Council'sPollution Hotline. was ananonymouscomplaint received viaCanterbury was received directly byGenesisEnergy, theother from Canterbury RegionalCouncil.Onecomplaint undertaking stubble burningunderapermitacquired Power Station vicinity,where GenesisEnergy was relating to smoke emanatingfrom theTekapo A one complaint wasreceived onthe25August 2014, Two complaints were received on15July 2014and Complaint Regional CouncilandNIWA (Environmental Data Explorer New recorded bythird partiesandcan beviewed ontheCanterbury Environmental data intheLake Tekapo catchment isalso purpose for obtaining it. genesisenergy.co.nz) andstating thedata you require andthe the Hydrology Team viatheiremailaddress (hydrology@ archive data sets.Thisdata can beobtained bycontacting Genesis Energy accepts requests for hydrology data from our Rainfall information. intervals ontheGenesisEnergy website underRivers, Lakes and publically available andthisisdisplayed andupdated at30minute and snow data. Currently only Lake Tekapo level information is the TekPS, includingrecording water level, flow, rainfall, wind Genesis Energy hasanextensive monitoring network around 6.9 PUBLICALLY AVAILABLE HYDROLOGY INFORMATION period, andtheactionstaken to address theissues. Table 11details thefour complaints received for thereporting documented along withrelevant recommendations andactions. captures theseinanEvent ManagementSystem. Complaintsare Genesis Energy takes allpubliccomplaints seriously and 6.8 PUBLICCOMPLAINTS Lake George Scott Control Weir CRC905306.3(5) Lake Tekapo operating levels CRC905301.4(5) submitted to Canterbury RegionalCouncil. resource consents, acopy oftheCSR(dated September 2013)was Annual Environmental Report.Asrequired underconditions of reporting periodandisdescribedfurtherinGenesisEnergy’s 2013/14 Safety Review (CSR)wascarried outontheTekPS duringthe2013/14 Zealand) websites. temporarily disarmed. or testing (thatdoesnotresult inflow changes)thealarmmaybe the release ofwater from Gate 16.Duringplannedmaintenance be activated. Thiswillincludeensuringthesafety ofthepublicduring Energy isinvestigating whenitisappropriate for theGate 16siren to was comfortable withandappreciated theexplanation.Genesis The reason for thealarmingwasdiscussed withtheindividualwho timeliness oftheresponse andactionstaken. complainant wasinformed ofactionstaken andwashappywiththe control to avoid thelightdefaulting to continuous operation. The the impactoflight.Anexterior lightwasalsochangedto manual external CCTV lightwasreplaced withaninfra-red lightto reduce The source ofthelightwasinvestigated. Consequently, abright Canterbury RegionalCouncilwere notifiedoftheoutcomes. causing smoke to settle inandaround the Tekapo township briefly. also noted thatanun-forecasted windchangeoccurred onthe25July for theburnto continue asscheduled, to theendofday. Itwas channels withregards to notification ofthe stubble burnandhappy were comfortable thatGenesis Energy hadgonethrough thecorrect of thestubble burnwasdiscussed withthecomplainants, who neighbours thatstubble burningwould beoccurring. Theprogress stubble burnonbothoccasions, GenesisEnergy hadinformed complaint hadbeenreceived. Inthedayspriorto undertaking the Canterbury RegionalCouncilwasimmediately informed thata Corrective Action

ENVIRONMENTAL COMMUNITY AND INITIATIVES

07 23 ENVIRONMENTAL REPORT // 15 24 TEKAPO // 15 comprehensive programme thatincludes: Since Schoolgenbeganin2006.GenesisEnergy hascreated a the whole community. including theirteachers, parents, parent’s colleagues, friendsand and behaviour;notjust theirs, butthatofthepeople around them have areal chance to cultivate environmentally-aware thinking play intheirfuture. Bytalking andinteracting withchildren we important thatthey understand therole renewable energy will Children are ourfuture leaders anddecisionmakers soitis solar energy to life for children across New Zealand. Schoolgen isaprogramme developed byGenesisEnergy to bring 7.2 SCHOOLGEN new weed incursions were detected atthesixsurveillance sites. washed-up plantfragments for thepresence oftarget weeds. No searches onfoot were alsoconducted inorder to inspectall and includedlagarosiphon, egeriaandhornwort. Shoreline were thosenotknown to becurrently present inthewaterbodies the suitable habitat present ateachsite). Thetarget weed species surveys over adistance ofbetween 50and200m(dependingon divers withsnorkel andSCUBAequipmentconducted underwater February andApril2015(NIWA, 2015).Ateachmonitoring location The weed surveillance for thereporting periodwascarried outin waterbodies upstream oftheTekapo BPower Station. Waitaki Weed Surveillance Plan.GenesisEnergy’s focus isonthe Canterbury RegionalCouncilto collaboratively implement the reporting period,GenesisEnergy joinedwithMeridianEnergy and Lake Tekapo; Lake McGregor; andLake Alexandrina. Duringthe B Power Station, withinfour water bodies:theTekapo Canal; catchment. Sixsurveillance sites are located upstream ofTekapo prepared byNIWA identifiedsurveillance sites throughout the Catchment. Theresulting ‘Waitaki Weed Surveillance Plan’ to develop aweed surveillance planfor theentire Waitaki As partofthemanagementstrategy NIWA wascommissioned negatively impactontheoperation oftheWaitaki Power Scheme. tool for addressing aquaticweeds thathave thepotential to Catchment. Thestrategy wasconsidered akey management strategy for unwanted aquaticplantsandalgaeintheWaitaki In 2013MeridianEnergy developed aweed management waterways outsidetheWaitaki catchment. the Waitaki catchment, inadditionto ariskofincursion from is ahighriskofspread to otherlakes andwaterways within is second only to thatofLake Taupo, whichmeans thatthere in thelake. Therate ofboatingandfishingusageLake Benmore proximity to thelake. Today there isaproliferation oflagarosiphon a fragment oftheweed wastransferred into pondsinclose It isbelieved to have madeitswayinto Lake Benmore after Lagarosiphon wasfirst detected inLake Benmore in2003. 7.1 TEKAPOPOWER SCHEMEAQUATIC WEED MONITORING 07 COMMUNITYANDENVIRONMENTAL INITIATIVES

There isadedicated programme website There are two majorstrands to theSchoolgenprogramme – Free, New Zealandcurriculum-linked teaching resources that Providing 80schoolsacross New Zealandwitha2–4kilowatt to see.This isthebest live solardata for New Zealand. installed ontheroof oftheseschoolsisdisplayed for anyone on whichthereal timegeneration data from thesolar panels Solar Energy (photovoltaic (PV)systems) andEnergy Efficiency. hard copy resources. web basedresources andSchoolgenschoolsalsoreceive free efficiency, renewable energy andclimate change. There are New Zealandcan useto explore electricity generation, energy any Primary,Intermediate orSecondary schoolin further fundsfor thisto occur –6kW,12kWand15kW. have schoolswithlarger arrays astheschoolhascontributed energy efficiency, andelectricity generation. Schoolgennow from the sunandto teach theirstudents aboutsolarenergy, allows theseschoolsto generate aportionoftheirelectricity now providing abigger 4kWinverter. ThePVsystem have beenaddingto thefree solararray asGenesisEnergy is (kW) PVsystem, atnocost to theschools.Recently schools

www.schoolgen.co.nz

of theGeraldine andTemuka Rotary Club.Thenew Schoolgen and Geraldine have become Schoolgenschools,withthesupport During the2015schoolyear afurtherfour schoolsinTemuka day, theschoolrunsoffbatteries whichsave theschoolmoney. school inNew Zealandwithabattery bankandfor four hours each which can supply 3–5daysofelectricity (Figure 28) installed ontheroof ofLake Tekapo Schoolwithabattery bank In July 2012a2kWarray ofphotovoltaic solar panelswere further ensure thebridgewithstands strong earthquakes. to thewest abutmentandthe designamendedfor pile caps to month to erect (Figure 29).Extra strengthening hasbeenadded commence early September 2015andwilltake approximately one being fabricated off-site. Construction on-site isscheduled to At thetimeofwriting,steel structure for thefootbridge was provide supportof$500,000towards buildingthefootbridge. entered into aSponsorship Agreement withtheFootbridge Societyto will usethefootbridge to access thechurch. GenesisEnergy has will eventually parkonthetownship sideofthebridgeandvisitors and walkwayswillenhance thesanctityofchurch asvehicles between thetownship andthechurch, provide alinkto cycle ways township. Theestablishment ofafootbridge willprovide safe access (Gate 16)from theChurch oftheGoodShepherd to Lake Tekapo across thelake outlet upstream oftheLake Tekapo Control Structure Tekapo community members withthegoalto buildafootbridge The Lake Tekapo Footbridge Societywasformed byagroup ofLake 7.3 LAKETEKAPOFOOTBRIDGE SOCIETY Schoolgen schoolsintheSouthIslandlater in2015. Workshop isscheduled for thelead teacher from alloftheten launch events for theseschools.Afollow-up SchoolgenTeachers and Arowhenua MaoriSchool. There have beenspecialSchoolgen schools are; Winchester Rural, Woodbury, StJoseph’s inTemuka,

FIGURE 28// FIGURE 29// Specialised SchoolgenEnvironmental Educators work at energy andenergy efficiency. Schoolgen schools,helpingschoolsto learn aboutrenewable the Primary,Intermediate andSecondary School level inthe Steel structure for thefootbridge beingfabricated off-site. Schoolgen solarpanelsonLake Tekapo School. . This istheonly .

tramped, sailed, paddled, climbed,ran, swamandspentmany many different ways–physically, culturally andemotionally. We “The course is20days.It’s demanding for allparticipantsin Christchurch), shares herexperiences below: Elinor Watson (Environmental Lead–SouthIsland,basedin Energy employee onanAoraki Boundcourse (Figure 31). In March 2015,GenesisEnergy wasproud to sendaGenesis friends, sponsors andIwirepresentatives (Figure 30). participants’ journey andachievements, andisattended byfamily, (celebration) atthefoot ofAoraki. Thehãkariacknowledges the and March 2015,concluding theirjourney withahãkari A mixof24participantscompleted theprogramme inFebruary supported theprogram for four years. Genesis Energy to work alongside NgãiTahu. GenesisEnergy has and NgãiTahu, until2017.Itisanexciting opportunityfor agreement wassigned,re-confirming supportoftheprogramme, In December 2014,theGenesisEnergy /NgãiTahu sponsorship delivers real, life changingbenefits to course participants. is anexciting opportunitythatstrengthens relationships and investing fundsalongside Te RunangaoNgãiTahu. Thispartnership Genesis Energy andBNZare primaryprogramme sponsors, Bound courses runevery year, inFebruary andMarch. fine tuningtimemanagementand leadership abilities. Two Aoraki Cultural protocols andknowledge are heightened, allthewhile beauty, pressure, endurance, revelation, andgroup experience. thrown into ajourney ofnew knowledge, friendships,challenges, Anakiwa, to Arahura, andconcluding atAoraki. Participants are The course explores Te Wai Pounamu (theSouthIsland),from confidence; adoorway,orportal, into Ngãi Tahu culture. The outcome isa20dayexperiential journey to promote cultural Outward Bound,withthevalues andknowledge ofNgãiTahu. two worlds together, fusingthefitness and leadership focus of and cultural development programme. Aoraki Boundbrings Genesis Energy supportsAoraki Bound,aunique,leadership 7.4 AORAKI BOUND–NG complete theproject. Footbridge Societyto secure theremaining fundingrequired to peer review requirements andthetimetaken for theLake Tekapo in early 2015.Thishasbeenre-scheduled for late 2015dueto The footbridge structure wasinitially scheduled for completion towards theendof2015. ceremony isplannedto celebrate thecompletion ofthefootbridge and are waitingto befixed to the steel structure. Anopening $157,000 towards theproject. Allplankshave now beenengraved A fundraising campaign “BuyaPlank”wassuccessful inraising their Aoraki Boundhikoi (journey). FIGURE 30// Participants from theMarch ropu (group) attheendof à I TAHU helped extend my capabilities inwaysIhadn’texpected.” group ofnew friends.Itwasanamazingprogramme andit’s possible. Andyou’ll finishwithsomegreat insightsandatight You’ll domore andpushyourself harder thanyou thought Would Irecommend Aoraki Boundto otherpeople? Absolutely! sharing mymihiandkey aspects ofNgãiTahu tikaka(protocols). culture andlanguage),it’s given meconfidence around me –Iwantto learn more aboutTe AoandTe ReoMaori(Maori safe andopenenvironment wasincredible. Thefire’s beenlit for Being able to experience andlearn aboutNgãiTahu culture ina come myway,bothinpersonal life andatwork. knowledge andto seizeopportunitiesandwero (challenges) that and where mystrengths lie.It’s encouraged meto share my I left withagreater understanding ofwhatI’mcapable of different backgrounds! you’re thrown together ascomplete strangers from totally I waswiththegroup 24/7,whichcan getpretty intense when and athome. outdoors, butI’ve taken awayinsightsthatwillhelp meatwork nights outinthewilderness. Aoraki Bound’s ‘classroom’ is in 15years. management beganandClinton/ Arthurhaditsthird best season Wangapeka/ Fyfe reports itsmost productive seasonsince three securitysites; Tongariro hashadarecord 218ducklings, (BFOB) 1080operations andthishasled to exceptional years at Eight sites received aboost through “Battle for ourBirds” 2015/16 breeding season. upgrade hasbeenplannedandiscurrently beinginstalled for the the trap network atthissite isnolonger effective (Table 12).An security site, Manganui/Retaruke hascontinued to decline,as to goodnumbers ofducklingsthisseason.Unfortunately one manage stoats andotherpredators. Most sites reported average focus with17whioprotection sites receiving supportto better Management Plan.Investment in predator control hasbeenakey Energy and DOCworking together to implement theWhioForever During thelast year significant work hasbeenachieved byGenesis of whio. National WhioRecovery Programme thereby securingthefuture commits, infull, $2.5millionover five years to fully implement the Genesis Energy on31August 2011inWellington. Theagreement Investment Agreement wassubsequently signedbyDOCand Group to become thecorporate sponsorofwhio.TheWhioForever the DepartmentofConservation (DOC)National WhioRecovery In 2010,GenesisEnergy received anexclusive invitation from 7.5 WHIOFOREVER (Mount Cook)attheendofherAoraki Boundjourney. FIGURE 31// Elinor Watson (GenesisEnergy) headingtowards Aoraki

25 ENVIRONMENTAL REPORT // 15 26 TEKAPO // 15 weight (andare less susceptible to predation). before beingreleased into thewild,whenthey reach acertain enables ducklingsto develop theirwhitewater andforging skills a significant milestone duringthe year (Figure 32).The facility facility attheTongariro NationalTrout Centre inTurangi was facilities nationwide.Theconstruction andopeningofahardening funding supportingcaptive breeding sites andducklingrearing The WhioNest Eggproject (WHIONE)continues to progress with and allows for better integration ofwhiomanagementnationally. access to critical whiodata from protection sites across thecountry information from protection sites. Thishasallowed openpublic of data loggers andanationaldatabase to capture whiorelated Population managementcontinues to beimproved withtheuse Total (Solid Energy andGenesisEnergy funding) Styx/Arahura (Solid Energy andGenesisEnergy funding) Oparara/Ugly Clinton/Arthur Wangapeka Manganui/Retaruke Tongariro Forest Whirinaki Te Urewera Security Sites Tongariro NationalTrout Centre inTurangi. The Honourable MaggieBarryopeningthehardening facility atthe FIGURE 32// TABLE 12//

Whiopairs protected ateightsecuritysites since thestart oftheWhioInvestment Agreement in2011. Genesis Energy’s ChiefExecutive AlbertBrantley and Pairs 2011/12 206 10 20 40 20 51 15 43 7 management andpest control techniques. whio programme managers. Thepurposewasto share whio session, primarily aimedatontheground staff from DOCand employees (Figure 33).Theworkshop wasaninformation sharing individuals attended theworkshop, includingtwo GenesisEnergy workshop washeldbyDOCatArahura Marae inHokitika.Twenty During thereporting period,theSouthIslandwhiopractitioner’s 7.5.1 WHIOPRACTITIONERS WORKSHOP to drive traffic to theWhio Forever website www.whioforever.co.nz. displays, press releases andanabove-the-line marketing campaign During themonthotherinitiatives were runincludingvisitor centre advertising campaign andthewhiofamily weekend atAucklandZoo. to raise awareness ofthestatus ofthewhiothrough anational In addition,theWhioAwareness campaign inMarch 2015worked and abilitylevels from beginners through to nationalchampions. provided anidealsettingfor theriders ranging inagefrom 9to 60+ and thevaried terrain oftheLake Tekapo RegionalPark track success for alltheriders involved. Thefamily friendly atmosphere and 1,000lapstotalling 6,700km,theevent proved to beagreat Tekapo10 mountain bike relay race (Figure 34).After 10hours, One hundred andthirtyriders took partinthethird annual outdoor education programmes withintheschool. Mackenzie College, Fairlie, theevent isaimedatraising funds for Tekapo RegionalPark. Runonthefirst weekend of February by cross country mountain bike relay race thatisheldintheLake Genesis Energy isaproud sponsoroftheTekapo10; aten hour 7.6 TEKAPO10 Pairs 2012/13 FIGURE 33// 302 114 13 34 38 29 37 16 21 Whio practitioner’s workshop participants. Pairs 2014/15 308 109 30 32 41 30 22 23 21 Increase inpairs over term of Genesis Energy funding 102 -29 20 12 10 66 14 1 8 Regional Council,FishandGamevolunteers. a collaborative effort whichinvolves landowners, Canterbury to waterways, andtend to exclude otherspecies.Theproject is Maryburn Catchment. Alders are exotic trees whichgrow adjacent invited to participate inaproject to remove aldertrees from the During theprevious reporting period,GenesisEnergy was 7.8 ALDERREMOVAL service to towns inthegreater Canterbury region (Figure 35). suburbs located atadistance from the Curtain Bankandprovide the a new mobile curtain initiative inorder to extend theirreach to the reporting period,theChristchurch Curtain Bankalsobegan 743 householdswere supplied withnew curtains (Table 13).During August 2010.From March to December 2014,arecord numberof Genesis Energy hassponsored theChristchurch Curtain Banksince curtains for livingrooms andbedrooms. their homeswarmerbyproviding recycled thermal orlined programme’s objective isto protect thehealthofpeople bymaking insufficient, ornocurtains to shutoutthe cold anddraughts. The households wholive incold and/ordamphomesandhave Action. TheChristchurch Curtain Bankassists low income The Christchurch Curtain BankisrunbyCommunity Energy their energy billsandcreate warmer,healthier,more private homes. Genesis Energy can assist low income householdsto save money on Involvement inthesecommunity initiatives isonewayinwhich Curtain Banks,located inAuckland,Wellington andChristchurch. Genesis Energy isproud to bethemajorsponsorofthree different 7.7 CURTAIN BANK Jun-14 May-14 Apr-14 Mar-14 Month Aug-14 Jul-14 Total 2014 Dec-14 Nov-14 Oct-14 Sep-14 TABLE 13// FIGURE 34// Christchurch Curtain Bankstatistics during2014. Tekapo10 event riders. Number ofwindows 3,448 521 621 424 290 248 435 215 260 257 177 Area (m 22,953 3227 3338 5797 1564 1394 2469 1141 1608 1594 821 2 ) within theMaryburnCatchment. volunteers andlandowners to remove Alders from othersections complements themanyhours thathave already beenputinby Tarn inthevicinityofMaryburnFill(Figure 36). Thiswork works onlandowned byGenesisEnergy, adjacent to theMaryburn During thereporting period,GenesisEnergy undertook removal mobile curtain initiative. FIGURE 35// FI GURE 36// Own home Aldertrees duringtheremoval process. Christchurch Curtain Bankvehicle to assist withthe 207 29 24 24 16 11 24 22 14 21 22 Private rental 231 37 30 15 14 32 40 13 15 22 13 Number ofhouses 104 102 111 743 85 57 48 57 76 65 38

27 ENVIRONMENTAL REPORT // 15 28 TEKAPO // 15 08 KEY OBJECTIVES 8.1 REVIEWOFKEYOBJECTIVE FOR 2014-2015 08 KEYOBJECTIVES Management System Environmental Canal Road RCMS Reporting Volunteer Day Environmental Monitoring Ngãi Tahu Outcome /Initiative TABLE 14//

Review ofkey objectives for 2014-2015 Management System. the company's new Business Management System into Integrate theEnvironmental use for allcanal road users. Canal road provides for safe capabilities. Enhance RCMSreporting operate. community inwhichwe Support projects inthe programme attheTekPS. environmental monitoring Seek to develop along term Ngãi Tahu. opportunities to partnerwith Seek on-goingproject Objectives Actions 2014-15 RCMS reporting process. the development ofthe Work withITto complete volunteer day. staff willparticipate ina Christchurch Environmental needs for theTekPS. environmental monitoring to determine future the synopticstudies recommendations of Review results and workstream. extension ofthe2013/14 with NgãiTahu asan opportunities to partner Seek to identifyproject across thebusiness. framework andalignment Ensure consistency ofthe the safety ofallroad users. canal road layout to ensure effectiveness ofthenew Monitor theuseand How didwe do?

had to bedeferred. Energy's resource consent system thisproject and thepossible re-development ofGenesis period, butdueto ITinfrastructure upgrades changes intheRCMSduringreporting A project wasplannedto incorporate these trout spawninghabitat. and Gameothervolunteers to enhance volunteer dayatScotts Creek, to assist Fish Genesis Energy staff participated ina Council. Meridian Energy andCanterbury Regional Upper Waitaki Catchment, inconjunction with round ofaquaticweed surveillance inthe Energy contributed to theAutumn2015 synoptic studies were reviewed. Genesis Results andrecommendations from the Waihao Runanga. representatives from Arowhenua, Moeraki and being collated into areport inconjunction with mapping exercise undertaken in2014are Scheme (TekPS). Outcomes ofthecultural participated inatour oftheTekapo Power Te RunangaoNgãiTahu staff members Management System. documents for thenew Business and isnow oneoftheoverarching guiding was approved bytheGenesisEnergy Board, and CommunityEngagementPolicy Statement Genesis Energy's Environmental Management Tekapo River to theTekapo township. the access over Gate 17andalong theUpper along-side Lake George Scott, hasincreased and theimplementation ofacycle barrier Upgrades to gate 17,improved signage

29 ENVIRONMENTAL REPORT // 15 30 TEKAPO // 15 Key environmental objectives for the2015-16year buildonmanyinitiatives andprogrammes thatare already underway. 8.2 KEYOBJECTIVES FOR 2015-2016 Signage Tekapo Footbridge Environmental ManagementSystem Canal Road Environmental Support Environmental Monitoring Ngãi Tahu Outcome /Initiative TABLE 15// Key objectives for 2015-2016 Objective System. in theSignageManagement All signageisrelevant andreflected of theTekapo Footbridge. Participate inasuccessful opening Business ManagementSystem. System into thecompany's new Environmental Management Continue withintegration ofthe all road users. Canal road provides for safe usefor projects can proceed. engineering andmaintenance in place sothatGenesisEnergy's environmental requirements are the community isinformed and Genesis Energy ensures that programme attheTekPS. environmental monitoring development ofalong term Continue to progress the seeking opportunitieswithNgãiTahu. Continue to progress relationship Action 2015-16

Tekapo footbridge. Support theTekapo Footbridge Societywiththeopening oftheLake Business ManagementSystem. into thecompany's Environmental ManagementSystem and Review GenesisEnergy's Environmental Standards andintegrate ensure thesafety ofallroad users. Continue to monitor theeffectiveness ofthecanal road layout to projects asrequired. Provide environmental supportfor engineeringandmaintenance monitoring needsfor theTekPS. the synopticstudies to furtherrefine the long term environmental Build uponthereview oftheresults andrecommendations from particularly whentheCultural ImpactAssessment iscompleted. Seek to identifyproject opportunitiesto partnerwithNgãiTahu, Signage ManagementSystem isupto date. Develop publicinformation signagefor theTekPS. Ensure the Dam Safety Guidelines.November 2000. The New ZealandSocietyonLarge Dams.,2000.New Zealand Dam Safety Guidelines.May2015. The New ZealandSocietyonLarge Dams.,2015.New Zealand Genesis Energy. Rules., 1990.AppendixoftheResource Consentsheldby Tekapo Power SchemeAppendixAExtracts ofWaitaki Operating September 2012.Prepared for GenesisEnergy. Water Monitoring Programme for Tekapo CanalRemedialWorks. Pattle Delamore Partners Ltd.,2012.Groundwater andSurface Canal RemedialWorks. June2015.Prepared for GenesisEnergy. Groundwater andSurface Water Monitoring Programme for Tekapo Pattle Delamore Partners Ltd.,2015.AnnualReporton Canterbury, MeridianEnergy LtdandGenesisEnergy Ltd. and weed surveillance in23waterbodies. Prepared for Environment 2015. Ecological assessment of6Canterbury lakes usingLakeSPI National Institute ofWater &AtmosphericResearch Ltd.(NIWA)., Annual Environmental Report. Genesis Energy Ltd.,2014.Tekapo Power Scheme2013/2014 March 2013.3pp. Electricity Authority., 2013.ResidentialElectricity Costs Fact Sheet 09 REFERENCES

31 ENVIRONMENTAL REPORT // 15 TEKAPO POWER SCHEME MAP // 15