Waimakariri Intake

Central Plains Water Limited 14-Jul-2016 Doc No. 1

Central Plains Water: Waimakariri Intake

Assessment of Effects on the Environment

J:\42190800\5 Works\Waimak intake\AEE\Keen Road wetland - ECan AEE Final 13_7_16.docx Revision 0 – 14-Jul-2016 Prepared for – Central Plains Water Limited – ABN: 000 AECOM Central Plains Water: Waimakariri Intake – Assessment of Effects on the Environment

Central Plains Water: Waimakariri Intake Assessment of Effects on the Environment

Client: Central Plains Water Limited

ABN: 000

Prepared by

AECOM New Zealand Limited Level 2, 2 Hazeldean Road, Addington, Christchurch 8024, P O Box 710, Christchurch MC, Christchurch 8140, New Zealand T +64 3 966 6000 F +64 3 966 6001 www.aecom.com

In association with Central Plains Water

14-Jul-2016

Job No.: 42190800

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Quality Information

Document Central Plains Water: Waimakariri Intake

Ref 42190800

Date 14-Jul-2016

Prepared by Helen Lawrence

Reviewed by Tim Ensor

Revision History

Authorised Revision Revision Details Date Name/Position Signature

1 24/06/16 Draft for Client Review Tim Ensor

2 14/7/16 Final for lodgement Tim Ensor

Table of Contents 1.0 Introduction 1 1.1 Purpose of this report 1 1.2 The applicants 1 1.2.1 Central Plains Water (CPW) 1 1.2.2 Wrightco Limited 1 1.3 Resource Consents Sought 1 1.4 Structure of this report 1 2.0 Background 3 2.1 Central Plains Water Enhancement Scheme 3 2.2 Sheffield Scheme 3 2.3 Existing relevant consents 3 3.0 Description of the Environment 4 3.1 The Site 4 3.2 Wetland area 4 3.3 Existing Activities and Uses 5 3.4 Zoning 5 3.5 Archaeological/Heritage Sites 5 4.0 Description of proposed activities 6 4.1 Earthworks and vegetation clearance 6 4.2 Intake Infrastructure 6 4.3 River Protection works 6 4.4 Mitigation measures 6 5.0 Assessment of Alternatives 7 6.0 Resource Consent Requirements 8 6.1 Changes to consent conditions under s127 of the RMA 8 6.1.1 CRC093715 Wrightco diversion consent 8 6.1.2 CRC167216 CPW B-permit consent 9 6.2 New consent requirements 9 6.3 Permitted Activities 10 6.4 Consent Requirements Summary 10 7.0 Consultation 11 7.1 Landowners 11 7.2 Wrightco Limited 11 7.3 Parties that submitted on the original application 11 8.0 Assessment of Effects on the Environment 12 8.1 Introduction 12 8.2 Positive Effects 12 8.3 Effects on surface water quantity 12 8.3.1 Installing infrastructure 12 8.4 Effects on surface water quality 13 8.5 Effects on drinking water supplies 13 8.6 Effects on ecology 13 8.6.1 Effects on indigenous vegetation and wetland habitat 14 8.6.2 Effects on fish 14 8.6.3 Summary of effects on ecology 14 8.7 Effects on erosion and flood carrying capacity 14 8.8 Effects on amenity 14 8.9 Effects on cultural and historic values 15 9.0 Statutory Assessment 16 9.1 National Environmental Standards 16 9.2 National Policy Statements 16 9.3 Regional Policy Statement 16 9.4 Land and Water Regional Plan (incorporating PC4) 17 9.4.1 Waterways 17 9.4.2 Wetlands 17

9.5 Waimakariri River Regional Plan (WRRP) 18 9.6 Part 2 Assessment 18 9.7 Section 104 19 10.0 Notification 20 10.1 Public or limited Notification 20 11.0 Proposed Conditions 20 11.1 Environment Canterbury 20 12.0 Conclusions 23 Appendix A Preliminary Design Plan A Appendix B Aerial Photos of wetland area B Appendix C Preliminary Design Plans C Appendix D Written Approval E

Table 1: Common Abbreviations

Abbreviation Description AEE Assessment of Environmental Effects CRC Canterbury Regional Council

CRPS Canterbury Regional Policy Statement ECan Canterbury Regional Council (Environment Canterbury) HNZ Heritage New Zealand LWRP Partly Operative Canterbury Land and Water Regional Plan PC4 Plan Change 4 to the Partly Operative Canterbury Land and Water Regional Plan RMA (the Act) The Resource Management Act 1991 The site The riparian margin of the Waimakariri River east of Keens road The works The installation of water take infrastructure TSS Total suspended solids

1.0 Introduction

1.1 Purpose of this report This Assessment of Effects on the Environment (AEE) supports resource consent applications by Central Plains Water and Wrightco Limited (the applicants), for the installation of intake infrastructure in a diversion channel off the true right bank of the Waimakariri River and the installation of river protection works in the same area. This report contains applications for consents under the Land and Water Regional Plan (LWRP), Waimakariri River Regional Plan (WRRP), and changes to existing resource consents under s127 of the Resource Management Act 1991. This report addresses the resource consent requirements and satisfies Section 88 of the RMA. Section 88 requires that an application for resource consent includes, in accordance with Schedule 4, an AEE in such detail as corresponds with the scale and significance of the effects that the activity may have on the environment.

1.2 The applicants 1.2.1 Central Plains Water (CPW) Central Plains Water Trust was formally constituted in March 2003 by the Christchurch City and Selwyn District Councils to facilitate sustainable development of Central Canterbury’s water resource. The trust led the applications for resource consents for the original scheme. Central Plains Water Limited (CPWL) is a shareholder-owned company set up by CPWT to raise funding and take responsibility for the detailed design, implementation and operation of the Scheme in accordance with CPWT’s consents. In the remainder of this report, CPWL and CPWT are collectively referred to as CPW. 1.2.2 Wrightco Limited Wrightco Limited own and operate a farm east of Springfield and hold a number of resource consents to provide for their activities. Activities that their consents authorise include; the take and use of surface water, works within the bed of a river and diversion consent to facilitate the water takes. The locations of their consented water takes are in the vicinity of where the new CPW intake infrastructure is proposed to be located.

1.3 Resource Consents Sought

Table 2: Resource Consents Sought

Consent type Activity Activity status Environment Canterbury

Land use Reducing the area of a wetland for the construction of new Restricted infrastructure for water distribution, including vegetation clearance Discretionary (LWRP) and earthworks and the taking, use, damming or diversion of water and the associated discharge Land use Deposition of material on, in or under the bed of a river for the Discretionary (WRRP) purpose of bank protection

In addition, changes to the following consents under s127 of the RMA are also sought to enable the proposed intake:  Condition 2 of CRC093715 (Wrightco diversion consent)  Condition 1 of CRC167216 (CPW B- permit consent) Details of these changes are discussed in Section 6.1 of this report.

1.4 Structure of this report The remainder of this report is set out in the following sections:

- Section 2: Background - Section 3: Description on the environment - Section 4: Description of the activities - Section 5: Resource consent requirements - Section 6: Consultation - Section 7: Assessment of effects on the environment - Section 8: Statutory assessment - Section 9: Notification - Section 10: Proposed Conditions

The following information is appended to this report: - Appendix A – Ecological assessment - Appendix B – Aerial Photos of wetland area - Appendix C – Preliminary Design Plan

2.0 Background

2.1 Central Plains Water Enhancement Scheme The primary RMA approvals required to establish the Central Plains Water Enhancement Scheme were confirmed by the Environment Court in July 2012. These approvals authorise the construction and operation of an irrigation scheme over an area of approximately 60,000 hectares of mid Canterbury between the Rakaia and Waimakariri Rivers. The approvals authorise all key activities and their associated environmental effects, including: - Abstraction of water from the Rakaia and Waimakariri Rivers and associated intakes, - A headrace canal and distribution network, - All temporary construction activities (including earthworks and contractor facilities) associated with establishing the scheme, and - Use and discharge of water for irrigation purposes. Construction of Stage 1, covering an area of approximately 23,000 hectares between the Rakaia and Hororata Rivers, has recently been completed and is now operational. Design of the key infrastructure in the remaining 37,000 hectares of the Scheme, known as Stage 2+, is currently underway.

2.2 Sheffield Scheme As a component of Stage 2+, CPW proposes to deliver water to an area of approximately 3,750 ha located in the area centred on Sheffield between the Hawkins and Waimakariri Rivers (referred to in this report as the ‘Sheffield Scheme’). The Sheffield Scheme falls within the area encompassed by the wider Central Plains Water Enhancement Scheme.

As part of the Sheffield Scheme a 2.15 million m3 water storage pond is proposed to be located on the Sheffield Plains at the corner of Coxs Road and State Highway 73. Consent applications have been lodged by CPWL and are currently being processed (CRC164541 and RC155704).

CPW propose to fill the pond through a combination of water sourced from the Kowai River1 and Waimakariri River2. The applications detailed in this report are to enable the installation of intake infrastructure to take water from the Waimakariri River.

2.3 Existing relevant consents The majority of the activities associated with the Sheffield Scheme are already authorised by existing resource consents held by CPW or are permitted by the various Regional Plans. Therefore these activities and their environmental effects are outside the scope of the current applications. The existing consented activities are: - Reservoir water supply: CRC136234 (A-permit) and CRC167216 (B-permit) to abstract water from the Waimakariri River; - Supply and distribution network: RC145506 to install an underground pipeline network within the boundaries of the Central Plains Water Enhancement Scheme area; and - End use of the water for irrigation: CRC165680 and CRC165685.

1 Under CRC155937 through agreement with the Selwyn District Council

2 Under CRC136234 and CRC167216 held by CPW

3.0 Description of the Environment

3.1 The Site The area of works is the riparian margin of the true-right bank of the Waimakariri River, east of the intersection between Kowai River Road and Keens Road. Works will be carried out next to the river on the lower terrace. The land is owned by Mountain View Farm Limited (Pt Res 461), P & E Limited (RS 40375) and the remainder is riverbed owned by the Crown.

Works area

Kowai River Road

Figure 1: Site location (Canterbury Maps, 2015)

3.2 Wetland area Site investigations identified that the lower terrace next to the river is a wetland area. The wetland incorporates: large areas of flourishing native plants; a spring-fed stream (with an existing associated take consent) which has been cleared and widened in places; areas which have been highly modified into tracks; and areas of non-native vegetation. An ecological assessment of the wetland area has been carried out by Wildlands and is included as Appendix A. As a summary the assessment identified the following: - No nationally threatened or at risk plant species were observed at the site and the only notable species were mānuka and Carex buchananii - Longfin eel, which have the status of at risk- declining, were caught or seen in the area

- Five indigenous bird species were observed, all with the status of not threatened - The site meets three of the National Priorities for Protecting Rare and Threatened Indigenous Biodiversity on Private Land - The site is considered to be significant under the Canterbury Regional Policy Statement as it meets at least 6 of the criteria. Aerial photos taken over the last few decades record the degree of erosion of the wetland area caused by the Waimakariri River migrating further toward the true right bank into an increasingly angular corner. These photos are included in Appendix B. Over the past ~12 years ~30% of the wetland area has been eroded by river action. The current land owner has taken steps to arrest this process but without significant investment in defences against water the Waimakariri River will continue to erode the wetland habitat.

3.3 Existing Activities and Uses The wider area is owned by P&E Limited and used for farming activities. Surrounding the site is the Waimakariri River, which at the works site fans out from a bend to a wide braided river before converging at the gorge. To the west of the site the land rises up to the Sheffield plains at the top of the terrace. Other water takes in the area include: - CRC981333.7 held by P & E Limited to take water from the unnamed tributary within the wetland at a rate not exceeding 40 L/s. - CRC030246.2 held by Colt Trustee Limited & Waifora Trustee Limited to take water from the Waimakariri River just upstream of the proposed diversion channel at a rate not exceeding 50 L/s. - CRC042296.4 held by Wrightco Limited to take water from a gallery downstream of the proposed diversion channel at a rate not exceeding 100 litres per second (gallery to be removed and water taken from CPW infrastructure following construction).

3.4 Zoning The land area is zoned Outer Plains in the Selwyn District Plan. The edge of the riverbed is included in the community drinking water protection zone, as defined in the LWRP, of wells L35/0576 and L35/0327, both listed for the use of small community water supply and owned by Waimakariri District Council. The area is also within the unconfined/semi confined aquifer zone.

3.5 Archaeological/Heritage Sites There are no archaeological, cultural, or historic sites listed in the Selwyn District Plan or ECan GIS within or nearby (at least greater than 1km distant) the area of proposed works.

4.0 Description of proposed activities The works are to install and operate intake infrastructure to enable a water take from the Waimakariri River. Proposed works will include a diversion channel, buffer pond and return channel back to the river, as shown in Appendix C. The water take will operate only during the months when water is required for irrigation, usually from the beginning of September until the end of April.

4.1 Earthworks and vegetation clearance Earthworks will be required to construct the 1.5 million litre buffer pond, intake and return channels between the river and pond. The supply channel will be an unlined open channel approximately 5 metres wide to divert up to 3.0 m3/s The design illustrates that the intake channel from the River to the buffer pond will largely follow an existing track. The buffer pond will be built in an area of largely non-native vegetation and separate from the spring-fed stream. An Erosion and Sediment Control Plan (ESCP) will be in place throughout the works.

4.2 Intake Infrastructure A supply channel will be located off the buffer pond. Water will be pumped from this supply channel to an above ground pipeline where it will be pumped up the terrace to the pipe network and storage ponds on the Sheffield Plains. Once outside of the wetland area the pipeline will be buried. The supply channel will be directed under the stream that leads from the wetland via a culvert. A fish screen will be installed to prevent fish being drawn into the pumps. This will be designed in accordance with the fish screen/barrier conditions under the existing CPW water take consents. Where required, consultation with ECan staff and other interested parties such as DOC and Fish and Game will be undertaken. The pond overflow and fish bypass will return any water not required for irrigation and any fish that enter the pond back to the Waimakariri River. Vehicle tracks will also be constructed to enable access to the intake infrastructure for maintenance, for example removal of sediment from the buffer pond.

4.3 River Protection works Works are proposed along the true right bank of the Waimakariri River to enhance existing erosion protection. These works will ensure that the infrastructure to be installed is protected and also that the loss of wetland area through the natural erosion processes of the Waimakariri River is halted. The construction of river protection works will involve consultation with ECan river engineering staff and other interested parties such as Whitewater New Zealand and the Jetboat Association.

4.4 Mitigation measures Mitigation measures that will be undertaken during the construction and operation of the intake infrastructure include: - Locating works and structures in areas of non-indigenous vegetation to the greatest practicable extent - Using existing vehicle tracks as much as possible and minimising the use of the stream ford - Thorough cleaning and inspections of all machinery before and after use at the site - Machinery and any equipment will not be cleaned, stored or refuelled with 10m of the stream or open excavations. All machinery will be well maintained to prevent leaks or spills - Development and implementation of a site specific ESCP - Following best practice guidelines in relation to the design of the fish screen and bypass These measures are also reflected in the proposed conditions set out in Section 11.0. The ecological assessment suggests the development of an Ecological Management Plan, however this is not necessary given the very limited potential adverse effects and that implementation of the mitigation measures above will ensure any effects are no more than minor.

5.0 Assessment of Alternatives

The existence of the wetland was not known at the time the concept design was developed, and consequently the design was based primarily on engineering precepts such as distance from the river (for longevity/protection of the infrastructure), height above river level, accessibility for construction/maintenance/plant, pump/pipe limitations, and so forth. Options considered for revising the concept design to minimise impacts on the wetland included:

- Alternative locations for the buffer pond; either separate from the spring fed stream or expand the true left bank of the small stream and incorporate the stream inlet and outlet into the pond. Using the stream would enable the distance from the river to be maximised to provide room to construction erosion defences along the river bank. But construction of the buffer pond discrete from the stream avoids construction impacts on the stream and any ongoing effects on the instream habitat. - Another option was to redirect the stream into a new alignment over a short distance to provide more room for the buffer pond to be constructed further from the river bank so that erosion protection can be constructed. Although this would affect vegetation and instream values of the new alignment, the habitat would be expected to recolonise the disturbed area quickly. - Alternative methods to direct overflow water back to the river; the construction of an outlet/return channel that avoids the stream and native vegetation as much as possible, or an overspill weir that directs untaken water into the stream. There is not sufficient area to construct a separate channel and avoid disturbing large areas of native vegetation that is next to the stream and the channel would intercept the stream where it converges back into the river. Any additional flow in the existing stream is not likely to affect the stream habitat as there is evidence that the downstream area is subject to high and low flows from the river during flood events. - Construct pipes above ground on short piles or below ground level. Pipes above ground level on short piles enables stream disturbance to be avoided to the greatest extent and will require less maintenance that could disturb the surrounding vegetation. Pipes below ground would impact the stream, native and non-native vegetation during construction and any future maintenance. - A gallery option (as opposed to an open channel system) was also considered at a concept level, but rejected due to a combination of higher cost and reliability risk due to more difficult maintenance.

6.0 Resource Consent Requirements

6.1 Changes to consent conditions under s127 of the RMA

Section 127 of the RMA allows for the holder of a resource consent to apply for changes of conditions: (1) The holder of a resource consent may apply to a consent authority for a change or cancellation of a condition of the consent, subject to the following: (a) the holder of a subdivision consent must apply under this section for a change or cancellation of the consent before the deposit of the survey plan (and must apply under section 221 for a variation or cancellation of a consent notice after the deposit of the survey plan); and (b) no holder of any consent may apply for a change or cancellation of a condition on the duration of the consent. (2) [Repealed] (3) Sections 88 to 121 (sections relating to resource consent applications) apply, with all necessary modifications, as if— (a) the application were an application for a resource consent for a discretionary activity; and (b) the references to a resource consent and to the activity were references only to the change or cancellation of a condition and the effects of the change or cancellation respectively. (3A) If the resource consent is a coastal permit authorising aquaculture activities to be undertaken in the coastal marine area, no aquaculture decision is required in respect of the application if the application is for a change or cancellation of a condition of the consent and does not relate to a condition that has been specified under section 186H(3) of the Fisheries Act 1996 as a condition that may not be changed or cancelled until the chief executive of the Ministry of Fisheries makes a further aquaculture decision. (4) For the purposes of determining who is adversely affected by the change or cancellation, the consent authority must consider, in particular, every person who— (a) made a submission on the original application; and (b) may be affected by the change or cancellation. Section 127 requires the application to be considered as a discretionary activity. Consideration of the environmental effects of the proposal is limited to the change of conditions rather than a revisiting of all effects associated with the proposal. Case law has established that Section 127 may be used for the purpose of changing conditions provided that the application is not for a materially different activity (i.e. increase in scope). The question of whether an activity is materially different is one of fact and degree to be determined in the circumstances of the case. The proposed changes to consent conditions in relation to this application are described below. 6.1.1 CRC093715 Wrightco diversion consent CRC093715 which provides for the physical works associated with the diversion of water from the Waimakariri River for the purposes of facilitating the taking of water, is held by Wrightco Limited. The proposed changes to consent are to also provide for water to be taken from the diversion under CPW’s existing A and B abstraction permits. The specific changes only relate to Condition 2, as identified below: 2. The diversion shall only occur: a. In the bed of the Waimakariri River for the purpose of facilitating the taking of water under resource consents CRC044496.3, and CRC093161, CRC136234, and CRC167216, and any replacements of these consents. b. In the bed of the unnamed tributary to create dry area for the purpose of facilitating the installation of the pipeline authorised under consent CRC093160. As the consent is already for the purpose of water takes and all remaining conditions will be complied with the change in conditions is not considered materially different to the consented activity.

Both the CPW A and B permit consents include conditions requiring fish screen or fish barrier to be installed and maintained across any intake that is constructed. All these conditions will be complied with. The CPW A-permit consent enables water to be taken from a specified section of the Waimakairi River; this area includes the proposed location of the Wrightco diversion channel. However the CPW B-permit specifies the location of the intake point which is not located at the proposed diversion channel. 6.1.2 CRC167216 CPW B-permit consent CPW’s B-permit consent provides for water to be taken from the Waimakariri River at a maximum rate of 24m3/s. Condition 1 specifies the location of the water take and is proposed to be changed to include the intake from the Wrightco diversion: 1. The water take shall be from: c. an intake shall be installed as close as practicable to and within the upstream edge of the designated band as shown in Plan CRC061972 being between the intake described as site 1: Original Proposal on the Plan and the upstream edge of the designated band, and/or d. an intake installed at the diversion channel consented under CRC093715 and any replacement of that consent. The current consent condition enables the intake to be located further upstream of the proposed diversion and intake point. Providing for an additional take point further downstream does not materially alter the scope of the consent as the water will still be taken at the consented volumes from the same river. The maximum rate of take at the Keen Road intake (the subject of this application) will be 2m3/s, and any combined rate between this intake and any future intake will not exceed 24 cumecs of B permit water.

6.2 New consent requirements

The relevant rules in the regional and district plans are discussed in Table 3 below.

Table 3: Resource Consent Requirements

Rule Comment Land and Water Regional Plan Rule 5.161 Reducing the area of a wetland for the construction Restricted Discretionary activity of new infrastructure for water distribution, including vegetation clearance and earthworks, and the taking, use, damming or diversion (including draining) of water and the associated discharge of any water onto land or into a river, lake, artificial watercourse or wetland Waimakariri River Regional Plan Rule 7.2 Activities on, in, under or over the bed of any river in Condition (i) requires the activity the Waimakariri River catchment, including; (b) the be for specified purposes which deposition of excavated bed material, rockwork, do not include the installation of rock used for bank protection, or cut plant material new flood protection works. Rule 7.4 Provides for activities not permitted under Rules 7.1, Discretionary activity 7.2 or 7.3.

In relation to the activities under rule 5.161, the exercise of discretion is restricted to: 1. The practicality of avoiding the wetland, including alternative routes or methods; and 2. The ecological significance of the wetland, and the actual and potential adverse effects on the significant values of the wetland; and 3. Any off-setting of any actual and potential adverse effects; and 4. The magnitude and proportion of reduction in area of the wetland.

6.3 Permitted Activities Table 4 below outlines the activities on site that are permitted to occur under the LWRP and WRRP.

Table 4: Permitted Activities

Rule Permitted activity condition Discussion Land and Water Regional Plan Rule 5.168 The use of land for earthworks outside All conditions can be met as the the bed of a river, or lake or adjacent to activities relate to the establishment a wetland boundary but within (b) 5m of network utilities. of the bed of a river Rule 5.137 The installation, alteration, extension, All conditions can be met use, maintenance or removal of bridges and culverts, and the consequential deposition of substances on, in or under the bed of a lake or river, the excavation or other disturbance of the bed of a lake or river, and, in the case of culverts, the associated take, discharge or diversion of water

A consent authority may disregard an adverse effect if a rule or national environmental standard permits an activity with that effect. The above activities are permitted to occur and as such any effects of these may be disregarded for the purposes of S104(2) of the RMA.

6.4 Consent Requirements Summary In summary, this report contains applications for the following; - Changes to conditions of CRC093715 and CRC167216 as a discretionary activity - Land use consent for activities within a wetland as a restricted discretionary activity - Land use consent for the deposition of material in, on or under the bed of any river for bank protection as a discretionary activity

7.0 Consultation

7.1 Landowners CPW have discussed the proposal with the site landowners and they are in support of the proposed works. The written approval of these parties is attached as Appendix D.

7.2 Wrightco Limited Wrightco have agreed to CPW using their existing consent and are applying for the change to this consent as they are the consent holder.

7.3 Environment Canterbury River Engineers Brian McIndoe was contacted to seek initial feedback on design of the river protection works. Brian advised that he had provided some advice to the landowner (Wright) in creating the existing tree groynes to protect the land and existing Wrightco gallery and pump station. Further consultation may be required as designs are finalised.

7.4 Parties that submitted on the original application Section 127(4) of the RMA requires that in determining who is adversely affected by a change in consent conditions the consent authority must consider every person who made a submission on the original application and may be affected by the change. As the proposed changes are simply to allow the sharing of infrastructure between two parties there are no effects raised by this application that require notification of original submitters. There are no further parties that are considered affected by the proposed works and therefore no further consultation has been carried out.

8.0 Assessment of Effects on the Environment

8.1 Introduction Section 104 of the RMA requires the consent authority, when making a decision on a resource consent application, to have regard to the actual and potential effects on the environment of allowing an activity. The environmental effects of the proposal are assessed in this section of the report.

8.2 Positive Effects

The installation of intake infrastructure will assist in the delivery and reliability of supply of irrigation to the Sheffield area prior to the completion of Stage 2+. This will provide benefits of improved water supply to farms within the Sheffield Scheme area. The economic and social benefits of the wider Scheme have been well documented during the previous consent process (2005-2012). Furthermore, expert evidence3 provided by CPW during the recent Variation 1 process under the Land and Water Regional Plan provided an up-to-date analysis of those benefits. Table 7 below summarises the key figures and provides a pro-rata analysis for the proposed Sheffield Scheme. Merging the intake locations of the CPW and Wrightco water take consents will result in efficiencies of scale and less ongoing disturbance of the area during maintenance. It also requires the development of defences against water to enable improved river protection along the true right bank of the Waimakariri River that may also protect the wetland. Table 5 Economic and social benefits of the Sheffield Scheme

Entire CPW Scheme Sheffield Scheme

Scheme area 60,000 ha 3,500 ha

New irrigation area (i.e. currently drylands) 30,000 ha ~2,000 ha

Additional economic revenue in Canterbury $268.4 million $17.9 million

Additional full-time equivalent jobs in Canterbury 849 57

8.3 Effects on surface water quantity 8.3.1 Installing infrastructure The installation of infrastructure is not expected to have impacts on the flow of surface water in the Waimakariri River near the site. Water diverted into the supply race during operation will predominantly be taken out of the intake, with volumes of up to1.0m3/s returned back to the River. P&E Limited’s existing take is from upstream of the proposed diversion and take point and will not be affected by the new location of the water takes. The amendment to the CPW B-permit intake location at the upper Waimakariri site will not change the volume of water taken from the main flow of the Waimakariri River. The additional take point is upstream of the currently consented intake. However, there are no other surface water abstractions from the south bank of the Waimakariri River between the existing take point and the proposed take point other than that consented by Wright Co. As Wright Co will be abstracting water from CPWs intake infrastructure, there will be no impacts on the ability of other water users to abstract water. On the above basis, the effects on surface water quantity of the proposed works will be no more than minor.

3 Statement of evidence of Dr Caroline Mary Saunders (regional economics), 29 August 2014, in respect of submissions and further submissions in relation to proposed Variation 1 to the proposed Canterbury Land and Water Regional Plan.

8.4 Effects on surface water quality Earthworks within the riparian margin of the river and within the wetland will be minimised as far as practical. All works will take place in accordance with an erosion and sediment control plan to ensure the discharge of sediment laden water to land or surface water is limited. Where required the erosion and sediment control measures are likely to include: - Limiting the area of exposed soil as far as practical - Locating infrastructure away from waterways where possible - Diverting surface water away from open excavation - Stabilising and rehabilitating exposed areas following the completion of works During the installation of river protection along the river bank, machinery will not be required to go onto the riverbank as all rip rap can be placed from the land area. This work method ensures that disturbance of the river bed is minimised as much as possible, limiting effects on surface water quality. Where the mitigation measures discussed above are implemented, the effects on surface water quality will be no more than minor.

8.5 Effects on drinking water supplies As stated in Section 3.4 above the works will be within the community drinking water protection zones of two surface water takes. The points of abstraction of these takes are over 700m across the river bed from the proposed works as shown in Figure 2. The disturbance of riverbed during the works will be minimal and an ESCP will be in place to limit any sediment from the earthworks leaving the site. Given the distance to the abstraction points, the location of the takes across the main river channel and the mitigation measures in place, there will be no effects on the community drinking water supplies.

Community drinking water protection zone

Abstraction points Works area

Figure 2 Location of work takes near the works area (Canterbury Maps, 2015)

8.6 Effects on ecology Effects of the proposed works on the ecology of the wetland are detailed in the ecological assessment in Appendix A. The discussion below is a summary of that information.

8.6.1 Effects on indigenous vegetation and wetland habitat The design and location of the proposed intake infrastructure has been adjusted to avoid and /or minimise the potential adverse effects on indigenous vegetation and wetland habitat, such as locating the supply channel and pond in an area of highly modified exotic shrubland/grassland. Locating the bulk of the works within non- indigenous vegetation limits the potential effects during construction. The installation of pipes above and below ground may, depending on the route, require the clearance of some indigenous plants such as large-leaved pōhuehue and cabbage trees. However as these are abundant at the site and will regenerate rapidly the effects on indigenous vegetation from installing the pipelines are minor. Operation of the water intake is not expected to have any adverse effects on hydrology of the wetland or on indigenous vegetation as the infrastructure will be located away from the stream and the water supply to the wetland will not be affected by the proposed works. Overall where the installation works minimise disturbance of indigenous vegetation as proposed the potential adverse effects on indigenous vegetation and wetland habitat, during construction and operation, will be no more than minor. 8.6.2 Effects on fish During construction the works will likely result in the disturbance of fine sediment that could be washed into the stream or through vehicles driving through the stream. Where construction is undertaken in accordance with an appropriate ESCP, effects on fish will be no more than minor. Keeping vehicle traffic through the ford to a minimum will also minimise the potential effects on fish. A fish barrier in accordance with the water take consent conditions will be installed to prevent fish entering the pump during operation. An adequate fish bypass will also be installed to ensure fish do not become trapped in the buffer pond. Overall, where the construction works are managed to avoid sediment discharges and vehicle access is kept to a practical minimum, and the fish screen(s) and bypass channel are designed and certified in accordance with the consent conditions of the take consents, and the conditions of Rule 5.137 are complied with, the effects of the proposed activities on fish will be no more than minor. 8.6.3 Summary of effects on ecology As set out in the ecological assessment and the summary above, the intake infrastructure will be constructed in areas of exotic vegetation to limit the potential effects on ecology. Through using existing vehicle tracks, minimising the use of the stream ford, managing sediment discharges and avoiding the introduction of any pest species to the site, the effects on ecology of the proposed earthworks will be no more than minor.

8.7 Effects on erosion and flood carrying capacity The aerial photos included in Appendix B show the loss in wetland area caused by the change in location of main stream of the river towards the true right bank. In order to both protect the proposed intake infrastructure and also the wetland, CPW propose to install river protection (most likely in the form of rip rap) along the bank of the river. The rip rap will have no impact on the flood carrying capacity of the river as it will be located on the banks. There are no other river protection structures immediately downstream of the site and further downstream the right bank of the river bed becomes bounded by the edge of the steep river terrace. Therefore downstream impacts of the river protection on other land owners are expected to be limited. As the rip rap will be constructed within the footprint of the existing tree groynes to limit effects of erosion and will not impact flood carrying capacity the effects of the proposed river protection works will be no more than minor.

8.8 Effects on amenity The area surrounding the proposed works is rural agricultural land and the braided channels of the Waimakariri River. There will be limited effects on amenity during construction as the site is rural in nature and not likely to be accessed by the public, other than recreational users of the Waimakariri River. Vegetation at the site is well established and as most of the established cabbage trees and shrubs will be retained there is expected to be limited changes to the visual landscape of the site, particularly in relation to the view from the river. The view from the top of the terrace will potentially be altered with the introduction of the supply race,

buffer pond and above ground pipeline. However as any disturbed vegetation recovers and grows around the infrastructure it will begin to blend in with the surrounding wetland more. As the site is surrounded by agricultural land the presence of a pond and intake infrastructure is not unexpected. On the above basis, the effects on amenity are considered to be no more than minor.

8.9 Effects on cultural and historic values There are no sites of cultural or historic interest that are identified in the District Plan within the works area. As the works are within a wetland, which are valued by tangata whenua, the effects of these values must be considered. The Mahaanui Iwi Management Plan 2013 provides a framework for the protection and enhancement of Ngai Tahu values in relation to natural resources. Issue WM12 relates to activities in the beds and margins of waterways and Issue WM13 relates to the loss of wetlands, waipuna and riparian margins and the values associated with them. The associated policies require the protection and restoration of native riparian vegetation; that works in riparian margins should protect the vegetation and ensure fish passage is provided for, and the values of wetland are recognised. The proposed works will be carried out in a manner that minimises the potential impacts on the indigenous vegetation and wetland habitat. The design has been amended considerably in response to feedback from the ecologist to minimise effects on the wetland and its native species. As described above, mitigation measures will be incorporated into the design and construction methodology to ensure effects are limited. In addition, the works to prevent further erosion of the wetland by natural river processes will prevent further loss of this wetland. Therefore the works are considered consistent with the policies in the Mahaanui Iwi Management Plan. In addition, whilst no sites of cultural interest are recorded in or close to the works site, Accidental Discovery Protocol conditions are proposed in the event that artefacts are uncovered during construction. On this basis, the effects on cultural and historic values are expected to be no more than minor.

9.0 Statutory Assessment

9.1 National Environmental Standards There are no National Environmental Standards that are relevant to the proposed activity.

9.2 National Policy Statements The National Policy Statement for Freshwater Management 2014 (NPS: Freshwater) sets out the objectives and policies for freshwater management under the RMA. Objectives A1 and A2 are of relevance to that activity as it has the potential to effect water quality (e.g. the proposed stormwater discharges). These objectives give Regional Councils the responsibility of ensuring that freshwater objectives and limits are met through the implementation of regional plans including the LWRP. The construction of the channel and pond will be tightly managed to ensure that contamination of surface water through the disturbance of sediment is minimised as far as is practicable. All the water permits required to operate the water take are already held by CPW. On this basis the proposed activities will not impact on the consent authority’s ability to set and meet environmental limits and is therefore consistent with the NPS Freshwater.

9.3 Regional Policy Statement The Canterbury Regional Policy Statement gives an overview of the significant resource management issues facing the region. The purpose of the CRPS is to set out objectives, policies and methods to resolve those resource management issues and to achieve the integrated management of the natural and physical resources of Canterbury. Chapter 7 addresses issues relating to freshwater quality and quantity, the following objectives are relevant: - Objective 7.2.1 relates to sustaining the life-supporting capacity and natural character of waterways. - Objective 7.2.3 requires the protection for the intrinsic value of waterbodies and their riparian zones Earthworks in the riparian margin required to install the intake infrastructure will be managed in accordance with an ESCP that includes measures to limit the discharge of sediment to land or surface water. The location of the channels and pond away from the indigenous wetland vegetation will ensure the life supporting capacity of the ecosystem processes are maintained and that the natural character of the wetland is protected. Chapter 9 sets out the issues, objectives and policies in relation to ecosystems and indigenous biodiversity: - Objective 9.2.2 Restoration or enhancement of ecosystems and indigenous biodiversity - Objectives 9.2.3 Protection of significant indigenous vegetation and habitats - Policy 9.3.5 Relates to the protection, enhancement and restoration of wetlands Through carrying out river protection works along the true right bank of the river at the boundary of the wetland the ecosystem and indigenous biodiversity will be protected from further erosion. The wetland has been assessed against the criteria in Appendix 3 of the RPS and is considered ecologically significant. Values associated with the wetland will be protected by avoiding works in areas where indigenous vegetation is located and minimising disturbance in the area. Chapter 10 of the CRPS sets out the issues relating to the bed of rivers and lakes and their riparian margins. The following objectives and policies are relevant: - Objectives 10.2.1 provides for activities in bed and riparian zones and protection and enhancement of bed and riparian zones - Policy 10.3.1 activities in river and lake beds and their riparian zones - Policy 10.3.5 maintenance and enhancement of public and Ngāi Tahu access The proposed earthworks in the riparian margin are necessary to enable the installation of intake infrastructure and will be managed to ensure significant values of the area are protected. Implications of the activity on the whole catchment will be limited due to the limited scale of the earthworks required. The mitigation measures proposed will ensure the potential effects on the environment are no more than minor.

In summary, the proposed activities are considered consistent with the objectives and policies of the CRPS.

9.4 Land and Water Regional Plan (incorporating PC4) The LWRP sets out the resource management goals for managing land and water resources in Canterbury to achieve the purpose of the RMA. The following section assesses the objectives and policies that relate to this application. In summary, the works will be managed to ensure the quality of freshwater and the significant values of the wetland are protected, therefore the proposed works and changes to consent conditions are considered consistent with the objectives and policies of the LWRP. 9.4.1 Waterways - Objectives 3.6, 3.8 and 3.16 relate to recognising the value of water, protecting the quality of freshwater and ensuring freshwater bodies are maintained in a healthy state. - Policy 4.18 Discharges of sediment and other contaminants to surface water from earthworks, land development and construction are avoided, or if not achievable the best practicable option is used to minimise the discharge to water - Policy 4.91 Land uses, and other activities in the beds or margins of lakes and rivers, do not adversely affect the stability or functioning of lawfully established erosion control or flood protection works or infrastructure. - Policy 4.85A is proposed to be added by PC4, it relates to the preservation of indigenous biodiversity, habitats of indigenous fauna and flora, and the natural character of Canterbury’s braided river systems through preventing the encroachment of activities and limiting vegetation clearance. Through the development and implementation of a site specific ESCP the earthworks will be managed to minimise the discharge of sediment that reaches either the stream or the main stream of the river, ensuring freshwater quality is maintained. The works to install the infrastructure will not affect the stability of flood protection works and works to install addition protection works will provide additional stability to limit the ongoing bank erosion. Changing the location of the water takes will not alter the flow of water in the Waimakariri River. Protection along the river bank is not expected to impact the natural character of the braided river system. Locating the majority of works in areas of exotic vegetation will ensure the clearance of vegetation, impacting the indigenous biodiversity of the wetland, will be limited and the natural character preserved. 9.4.2 Wetlands - Policy 4.81 Any take, use, damming or diversion of water, any discharge of contaminants onto land or into water, or any earthworks, structures, planting, vegetation removal or other land uses within a wetland boundary, do not adversely affect the significant values of wetlands, hāpua, coastal lakes and lagoons, except for: (a) a temporary and or minor adverse effect where that activity is part of installing, maintaining, operating or upgrading infrastructure, pest management, or habitat restoration or enhancement work; or (b) the artificial opening of hāpua, coastal lakes or lagoons to assist in fish migration or achieving other conservation outcomes, customary uses, or to avoid land inundation. - Policy 4.82 Modification of wetlands, hāpua, coastal lakes and lagoons may occur if the modification is necessary, and necessarily has to be in that location to provide for the installation, upgrading or maintenance of infrastructure and any significant effects are offset by other improvements to or expansion of the same or another wetland, hāpua, coastal lake or lagoon. The construction works will be for the installation of intake infrastructure to support CPW’s regional irrigation scheme and is necessary that it is located in the proposed area. As set out in Section 8.0 there will not be any significant effects on wetland values during the construction or operation of the intake infrastructure, and the river protection works will protect the wetland from further erosion by the river, therefore any further offset through wetland improvements or expansion is not required.

9.5 Waimakariri River Regional Plan (WRRP) The WRRP is to promote the sustainable management of rivers, lakes and hydraulically connected groundwater and the beds of waterbodies in the Waimakariri River catchment. The following objectives and policies of the WRRP are relevant to the proposed river bank protection works in the bed of the river. - Objective 7.1 relates to enabling present and future generations to gain cultural, social, recreational, economic, health and other benefits from the river and lake beds in the Waimakariri catchment while safeguarding important values. These are: (a) safeguarding the existing value of rivers and lakes for efficiently providing sources of drinking water for people and their animals; (b) safeguarding the life-supporting capacity of the water in the beds of rivers and lakes, including its associated: aquatic ecosystems, significant habitats of indigenous fauna, and areas of significant indigenous vegetation; (c) safeguarding the existing value of rivers and lakes for providing mahinga kai for Tangata Whenua; (d) protecting wahi tapu and other wahi taonga of value to Tangata Whenua; (e) preserving the natural character of rivers, lakes and wetlands and protecting them from inappropriate use and development; (f) protecting outstanding natural features and landscapes from inappropriate use and development; (g) maintaining and enhancing amenity values; (h) protecting and where appropriate enhancing the habitat and heritage values of river and lake beds; (i) protecting and where appropriate enhancing the flood carrying capacity of rivers; (j) protecting the banks of rivers and lakes, and the stability and performance of essential structures in their beds; and (k) protecting the significant habitat of trout and salmon. - Policy 7.1 requires activities in the bed any of any river or lake to be controlled so that the values identified in objective 7.1 are achieved. - Policy 7.2 relates to promoting measures in river and lake beds to restore or enhance the values in (a) to (k) of Objective 7.1 The installation of river protection along the bank will ensure the natural character and significant values of the wetland are protected from further erosion. Materials used for bank protection will be rip rap to ensure the materials are similar to the natural landscape and amenity values are maintained. The value of the river, life supporting capacity of the ecosystems and sources of drinking water will be safeguarded through the proposed mitigation measures and avoidance of indigenous vegetation. Based on the ecological assessment and compliance with the proposed consent conditions the proposed works are considered consistent with the objectives and policies of the WRRP.

9.6 Part 2 Assessment The purpose of the RMA, as stated in Section 5 of the Act, is to promote the sustainable management of natural and physical resources. The purpose is support by the principles contained in Sections 6-8 of the Act. Section 5: Purpose Sustainable management is defined as in Section 5(2) a follows: …means managing the use, development, and protection of natural and physical resources in a way, or at a rate, which enables people and communities to provide for their social, economic, and cultural wellbeing and for their health and safety while— (a) sustaining the potential of natural and physical resources (excluding minerals) to meet the reasonably foreseeable needs of future generations; and (b) safeguarding the life-supporting capacity of air, water, soil, and ecosystems; and

(c) avoiding, remedying, or mitigating any adverse effects of activities on the environment. The works enable the development of intake infrastructure for supplying water to the Sheffield storage pond. Any adverse effects that have been identified will be appropriately avoided, remedied or mitigated. Overall, the project will allow for water to be taken to provide for the Sheffield Scheme which will enable people to provide social, economic and cultural wellbeing while avoiding, remedying or mitigating the effects of doing so. In this regard the project is consistent with the purpose of the RMA. Section 6: Matters of National Importance Section 6 contains the following matters of national importance of relevance to the proposal: a. the preservation of the natural character of the coastal environment (including the coastal marine area), wetlands, and lakes and rivers and their margins, and the protection of them from inappropriate subdivision, use, and development: b. the protection of areas of significant indigenous vegetation and significant habitats of indigenous fauna: The above matters have been assessed throughout this AEE. By way of summary, the potential effects on natural character and indigenous vegetation will be mitigated through the location of the intake channels and pond. This and the additional mitigation measures summarised in Section 4.4 ensure the proposed activities are consistent with Section 6 of the RMA. Section 7: Other Matters Section 7 of the RMA outlines other matters which are considered relevant to this application: (b) the efficient use and development of natural and physical resources: […] (c) the maintenance and enhancement of amenity values: (d) intrinsic values of ecosystems: […] (f) maintenance and enhancement of the quality of the environment: (g) any finite characteristics of natural and physical resources: These matters have been incorporated into discussions throughout this report. In summary the intake works will enable the efficient use of water from the Waimakariri River while maintaining the amenity values and quality of the surrounding wetland environment. Section 8: Treaty of Waitangi Section 8 requires the principles of the Treaty of Waitangi to be taken into account when managing the use, development, and protection of natural and physical resources. These principles have been taken into account by considering the relevant iwi management plans and potential effects on tangata whenua values.

9.7 Section 104 Section 104(1)(b) of the RMA requires that when considering an application for a resource consent, the consent authority must, subject to Part 2, have regard to any relevant provisions of: (i) a national environmental standard; (ii) other regulations; (iii a national policy statement; (iv) a New Zealand coastal policy statement; (v) a regional policy statement or proposed regional policy statement; (vi) a plan or proposed plan. This section provides that assessment.

10.0 Notification

10.1 Public or limited Notification The AEE contained in Section 8.0 of this report has concluded that, with the appropriate mitigation measures, the effects on the environment are no more than minor. It is also considered that there are no parties affected by the proposed works (who have not provided their written approval for the proposal), and as such, the nature of this application does not warrant public or limited notification.

11.0 Proposed Conditions 11.1 Environment Canterbury CRCXXXXXX: To install, use and maintain intake infrastructure in a wetland, including the vegetation clearance, earthworks, and the taking, use, damming, diversion or discharge of water associated with the intake works. Limits

1. The works to install intake infrastructure and river protection structures shall be within the project in areas identified on Plan CRCXXXXXX, attached to and forming part of this consent.

2. At least 48 hours prior to the commencement of works authorised by the consent, the consent holder shall inform the Canterbury Regional Council, Attention: RMA Compliance and Enforcement Manager of the start date of works.

3. An Erosion and Sediment Control Plan shall be prepared in accordance with Environment Canterbury’s “Erosion and Sediment Control Guidelines for the Canterbury Region” Report No. CRC R06/23, February 2007.

4. The ESCP shall include, but not be limited to:

a. A map showing the location of all works;

b. Detailed plans showing the location of sediment control measures, on-site catchment boundaries, and sources of runoff;

c. Drawings and specifications of designated sediment control measures;

d. A programme of works, which includes but is not limited to, a proposed timeframe for the works;

e. Inspection and maintenance of the sediment control measures.

5. The ESCP shall be submitted to the Canterbury Regional Council, Attention: RMA Compliance and Enforcement Manager, at least twenty working days prior to construction of the subdivision commencing, for certification that it complies with Environment Canterbury’s Erosion and Sediment Control Guidelines for the Canterbury Region, and the conditions of this consent.

a. The discharge shall not commence until the consent holder has received the certification from the Canterbury Regional Council.

b. Notwithstanding Condition (15)(a) if the consent holder has not received the certification within 20 working days of the RMA Compliance and Enforcement Manager receiving the ESCP the discharge may commence.

6. The Erosion and Sediment Control Plan may be amended at any time. Any amendments shall be:

a. Only for the purpose of improving the efficacy of the erosion and sediment control measures and shall not result in reduced discharge quality; and

b. Consistent with the conditions of this resource consent; and

c. Submitted in writing to the Canterbury Regional Council, Attention: RMA Compliance and Enforcement Manager, prior to any amendment being implemented.

7. Activities authorised by this consent shall not result:

a. In the further erosion of the bed and banks of the Waimakariri River

b. In the reduction of the flood carrying capacity of the Waimakariri River

c. In the flooding of any adjacent property

8. There shall be:

a. no refuelling of vehicles and machinery within 20 metres of any surface water body;

b. and no storage of fuel within 20 metres of any surface water body.

9. All spoil and other waste material from the works shall be removed from site on completion of works.

10. As far as practicable. machinery shall be free of plants and plant seeds prior to use in the riverbed

11. To prevent the spread of Didymo or any other aquatic pest, the consent holder shall ensure that activities authorised by this consent are undertaken in accordance with the Biosecurity New Zealand’s hygiene procedures.

12. Other than for the construction of intake infrastructure no cut vegetation, debris, or stockpiles shall be placed within 20 metres of any surface water body including ephemeral watercourses, or in a position such that it may move into a surface water body.

13. In the event of any disturbance of Koiwi Tangata (human bones), taonga (treasured artefacts), or other Māori archaeological sites the Consent Holder shall immediately:

a. Advise the Te Rūnanga o Ngāi Tahu, Te Ngāi Tūāhuriri Rūnanga, Te Taumutu Rūnanga, or their representative, and Canterbury Regional Council of the disturbance;

b. Cease earthmoving operations in the affected area until the area containing the Koiwi Tangata or taonga has been clearly demarcated, and Kaumatua and archaeologists have certified that it is appropriate for earthmoving to recommence.

14. In the event of accidental discovery of archaeological remains, the following steps shall be taken:

a. All activity affecting the immediate area shall cease and the Regional Archaeologist of Heritage New Zealand shall be contacted;

b. The site shall be secured to ensure that the remains are not further disturbed;

c. Further works affecting the remains will not commence until either:

i. The Regional Archaeologist of Heritage New Zealand has confirmed in writing that the archaeological provisions of the Heritage New Zealand Pouhere Taonga Act 2014 do not apply; or

ii. The requirements of the archaeological provisions of Heritage New Zealand Pouhere Taonga Act 2014 have been met, and if required, and archaeological authority has been granted by Heritage New Zealand.

iii. If human remains / koiwi tangata are located, in addition to the above steps, the Runanga representative for the area and the New Zealand Police must be contacted

15. The protocol in condition 14(c) shall only be amended in consultation with Heritage New Zealand, Te Rūnanga o Ngāi Tahu, Te Ngāi Tūāhuriri Rūnanga and Te Taumutu Rūnanga. Once finalised copies shall be lodged with those parties and Canterbury Regional Council prior to any construction commencing. Spills

16. During the works, spill kits shall be kept on-site in an accessible location and:

a. The consent holder shall take all practicable measures to avoid spills of fuels or any other hazardous substances with the project sites.

b. In the event of a spill of fuel or any other hazardous substance, the consent holder shall clean up the spills as soon as practicable, inspect and clean the spill area, and take measures to prevent a recurrence.

c. The consent holder shall inform the Canterbury Regional Council, Attention: RMA Compliance and Enforcement Manager within 24 hours of a spill event and shall provide the following information:

i. the date, time, location and estimated volume of the spill;

ii. the cause of the spill;

iii. the type of hazardous substance(s) spilled;

iv. clean up procedures undertaken;

v. details of the steps taken to control and remediate the effects of the spill on the receiving environment;

vi. an assessment of any potential effects of the spill; and

vii. measures to be undertaken to prevent a recurrence. Administration

17. The Canterbury Regional Council may, once per year, on any of the last five working days of May or November, serve notice of its intention to review the conditions of this consent for the purposes of:

a. Dealing with any adverse effect on the environment which may arise from the exercise of this consent and which it is appropriate to deal with at a later stage; or

b. Requiring the adoption of the best practicable option to remove or reduce any adverse effect on the environment.

18. The lapsing date for the purposes of section 125 of the Resource Management Act 1991 shall be the XX of XX.

12.0 Conclusions The proposed works will enable the taking of water for the CPW Sheffield Scheme from the Waimakariri River with limited effects on the surrounding environment. While the construction works have the potential to adversely affect the environment, the mitigation methods proposed throughout this report will ensure these effects are mitigated to a level that is no more than minor. Overall, the proposed activities are considered to be consistent with the purposes of the RMA as they promote the sustainable management of natural and physical resources

Appendix A

Preliminary Design Plan

Appendix B

Aerial Photos of wetland area

Appendix C

Preliminary Design Plans

Appendix D

Written Approval

J:\42190800\5 Works\Waimak intake\AEE\Keen Road wetland - ECan AEE Final 13_7_16.docx Revision 0 – 14-Jul-2016 Prepared for – Central Plains Water Limited – ABN: 000