Agenda - Gore District Council · is to draw together a range of experts and drillers to...

Notice is hereby given that a meeting of the Operations Committee will be held in the Mataura Community Centre, McQueen Avenue, Mataura, on Tuesday 20 November 2018, following the Community Services Committee meeting.

Stephen Parry

Chief Executive

15 November 2018 Agenda

1. Presentation on aeromagnetic survey preliminary results

Pages 1-7

2. Report from 3 Waters Asset Manager Page 8-20

3. Report on 2017/18 compliance with the Drinking Water Standards for

New Zealand 2005 Pages 21-42

4. Report on the Gore District Council’s compliance with resource consent

conditions for the 2017/18 reporting period Pages 43-47

5. Bulk water abstractions – fees and charges review

Pages 48-49 6. Report from Transport Manager

Pages 50-59

OPERATIONS COMMITTEE AGENDA

TUESDAY 20 NOVEMBER 2018

1. PRESENTATION ON AEROMAGNETIC SURVEY PRELIMINARY RESULTS

(Memo from Chief Executive – 31.10.18)

Mr Steve Canny from Venture Southland will be in attendance to provide a presentation on the preliminary results of the aero-magnetic survey and a potential new source of water found around Chatton.

A copy of the report is attached.

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To: Gore District Council Date: 20 November 2018 Subject: Progress report - Southland Airborne Survey interpretation and

ground water assessment work Author: Steve Canny, GM Business and Strategic Projects Approved: Steve Canny, GM Business and Strategic Projects SUMMARY This report provides an update of the Southland Airborne Survey interpretation and ground water assessment work. RECOMMENDATION THAT GORE DISTRICT COUNCIL RECEIVE THIS REPORT AND ENDORSE THE ACTIONS BEING TAKEN TO IDENTIFY POTENTIAL GROUNDWATER SOURCES FOR GORE. THAT GORE DISTRICT COUNCIL REQUESTS VENTURE SOUTHLAND TO SEEK PRICES TO DIGITISE BORE LOG AND DRILL DATA AND COMBINE EXISTING GEOPHISICAL DATA AND AIRBORNE SURVEY DATA TO ASSIST IN IDENTIFYING POSSIBLE SEARCH ZONES FOR A DEEP AQUAFER WATER SOURCE AND REPORT BACK TO THE COUNCIL CEO WITH OPTIONS AND RECOMMENDATIONS. COMPLIANCE STATEMENT This recommendation is consistent with the Venture Southland Business Plan 2018/2019, which has been adopted following public consultation.

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Report to VS Joint Committee 2 5 November 2018

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REPORT As previously reported, Venture Southland allocated $100,000 to assist with the detailed analysis of the airborne survey work which is currently underway and involves the search and collation of all known soils, geological, hydrogeological and bore data as well as the analysis of the recently completed airborne surveys. This work has been augmented by a separate but complementary Sustainable Farming Fund project for the development of a Spatial Physiographic Information Platform for Farmers. The total additional investment being in excess of $600,000. Two phases of work have been committed to:

• Phase 1 Information gathering and collation of all known information - this work is underway and was completed on the 31st of October.

As mentioned above this involves gathering all known information and recent airborne survey work which is relevant to the search area and environs. The program will involve inputs from a range of parties ICC, ES, GNS, MBIE, VS, drilling contractors and will be coordinated by Land and Water Science. A ‘Deep Aquifer Water’ working group has been formed and the first meeting of this group was held at Venture Southland on the 17th of September 2018 and further meetings will be held as the investigation work progresses. The purpose of this group is to draw together a range of experts and drillers to triangulate data and ground truth information.

The initial analysis is focused on the Invercargill and environs in the Invercargill and Southland District areas and the areas North and North West of Gore. The analysis of the wider Southland area will be completed when MBIE has finished the 2018/19 airborne survey

• Phase 2 Analysis of the collated data for the wider Southland area – this work is to be completed by July 2019.

Phase 2 is currently underway and will be finalised following the completion of this summer’s MBIE airborne survey work and the formulation of resource use and possible water prospectivity target area/s and a range of recommendations will also be made. A peer review will also be built in to the contract work.

Progress to date To date, early stage analysis of the collated data undertaken by Land and Water Science Limited has identified that suitable aquifer opportunities for emergency water supplies are reasonably scarce. However, some of the best aquifer potential has been identified in the Cenozoic geology that underlies the Gore Lignite Measures and overlies older basement rocks1. The prospective subset formation which is of interest is known as the ‘Chatton Formation’. The Chatton Formation is regionally extensive albeit discontinuous and is thought to extend from North of Gore to beneath Invercargill City environs at approximately 160 – 200 m below ground level1-4. The following is an excerpt from the Municipal Groundwater Supply Investigation Phase 1 data Collection prepared By Land and Water Science; this currently subject to peer review. Of the options, a deep groundwater source was the economically most favourable option with the advantage of an added security relative to shallow or surficial water takes. The lower overall cost of a groundwater source relative to surface water is consistent with other studies nationally and internationally.

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Despite the lower cost and greater security of deep groundwater sources, the existence of a relatively high yielding and sustainable deep groundwater source beneath the South-eastern plains of Southland is largely unproven. Further, relative to the extensive and high yielding alluvial aquifer systems of the Canterbury Plains, the deeper aquifer systems of the South-eastern Plains are by their nature likely to present greater limitations in terms of yield and potability. These limitations reflect the unique geological setting of the region. The focus then becomes one of exploring the viability of a deep groundwater source associated with one or more higher-yielding aquifer units within the East Southland Group sediments; the most promising of which may be the Chatton Formation which is known to exist beneath both Invercargill City and Gore Districts. The ability to further explore and refine the deep groundwater potential is supported by the rich data set and geological understanding of the East Southland Group sediments from the decades of lignite resource assessment. This high-quality data set, in conjunction with historical gravity and more recent airborne aeromagnetic survey data, provides an enviable dataset for ruling in or out the existence of a viable deep groundwater source(s) within the East Southland Group sediments. Notably, the Ocean Beach deep groundwater investigation utilised much of this historical knowledge including similar methods to refine and identify a relatively high-yielding aquifer source north of Bluff Harbour. The historical geological, drill log and downhole geophysics data developed during the 1970s – 1980s has in places been locally augmented by more recent works. Specifically, 80 – 90 drill holes, drill logs and downhole geophysical logs were produced for the Mataura lignite field by Solid Energy in 2007. These drill holes are reputed to intercept the Chatton Formation. Two phases of exploratory drilling and downhole geophysics were undertaken by L&M Mining Group in the Ashers-Waituna lignite field and also are known to intercept the Chatton Formation. Both of these more recent studies locally augment the understanding of the East Southland Group sediments. The historical investment in the understanding of the East Southland Group sediments has the potential to greatly improve the future understanding of the deeper groundwater resource of the South-eastern Plains without the need to invest in expensive measurement or drilling. However, the integration of relevant information into a coherent data set, including digitising of all historical bore logs, expert interpretation of existing geophysical data sets, and the production of a refined hydrogeological model of the groundwater system of the East Southland Group sediments and their viability for municipal or industrial supply, would require considerable investment. Possible tasks may include:

• Integration and digitisation of all existing bore log and downhole geophysical data for the East Southland Group sediments into a detailed 3D model;

• Refinement of the 3D architecture of the East Southland Group sediments with a focus on better defining the depth, continuity, thickness and likely permeability of aquifer units within the East Southland Group;

• Correlation of 3D architecture and downhole geophysics with existing gravity and aeromagnetic data, to provide an integration surface and enhance the ability to extrapolate vertical and lateral continuity of subsurface strata including aquifer units, and;

• Identification of suitable targets including their spatial location and depth.

The ultimate goal of the above work would be to utilise existing information to advance what is currently a limited understanding of the deeper groundwater potential of the East

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Southland Group sediments. The work would be of a desktop nature and would require a multidisciplinary team of geologists, hydrogeologists and geophysicists in order to maximise the value of the existing data set and should occur prior to consideration of costly exploratory drilling or geophysical survey. Ideally, the hydrogeologists and geologists involved in any such work would have a working knowledge of the East Southland Group sediments. - The complete report will be available to Council upon completion of the peer review process.

Previous investigations, including pump tests, indicate that significant abstraction rates, greater than those encountered in the Gore Lignite Measures, have been achieved from the Chatton Formation1. A high yielding groundwater source is required if it is to meet the requirements for a municipal supply. Although longer term testing has not been undertaken, surficial and downhole geophysical measures of porosity and bulk density are promising and well correlated with geological logs1. Issues of water hardness would need to be addressed. The question of the water source within the Chatton Formation and the recharge and hydraulic relationship of the Chatton to the Gore Lignite Measures remains unanswered. Several possible recharge sources exist but are unsubstantiated at this early stage of the investigation. Where to from here The Phase 1 investigation draft has been completed and is currently subject to peer review. It is expected that out of this report will come a series of recommendations to assist Council to focus its ground water investigations with a view towards the identification of a possible ground water source situated as close as possible to Invercargill. In conclusion there are some positive, albeit preliminary indications that a suitable volume of supply of groundwater may be available and likely from a series of bores. It is important however to recognise that the work to date is at a very early stage and that further investigatory works are required to quantify the resource and better understand the potential of the Chatton Formation as an emergency groundwater source. A further update will be provided upon completion of the current contract. The attached aerial photograph and table shows the current bore log location and bore depth and also a map inferred extent of the Chatton formation across the Southland Region. This information will be further refined as the work progresses. Sources: Morrison Cooper & Partner, (1986); Isaac, and Lindqvist, (1990;) Lindqvist et al., (2014); Gard, (2017). Figure modified from Lindqvist et al., (2014). References available upon request.

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Table 1: Total depth (m bgl) and use of available bore log data for the Gore extended areas of interest (Environment Southland data, 2018).

<10 m 10 -

20 m 20 - 30 m

30 - 50 m

50 - 100 m

100 - 150 m

150 - 323 m

No depth

Total

Aquifer Testing 53 12 1 5 3

1 7 82 Commercial 3

3

Dairy Use 22 11 7 13 17 2

8 80 Dewatering 21 2

23

Domestic Supply 21 15 7 4 3

10 60 Foundation/Investigation Bore

1 1

2

Garden 2

1

3 Geological Research 5

2 19 19 91 8 144

Groundwater Quality 35 4

1

2 42 Industrial 1

1

1 1 4

Irrigation 3 5 4

12 Not Used 2 1

2 5

Public Supply 4 1 3 1 2

4 15 Stock Supply 12 10 5 5 2

7 41

Test Bore for Irrigation

1 1

1

3 No information 11 4 3 4 1

1 10 34

Total 196 67 31 37 47 21 95 59 553

Figure 1: Bore locations by depth in the Gore area of interest. The majority of deeper bores (>100 m) are associated with historical lignite exploration and are not groundwater takes. Note the high density of geological exploration bores in the vicinity of Mataura associated with historical lignite exploration. This data will provide composite geological information and the deeper bore data will assist in the calibration of the aeromagnetic bedrock data.

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Phase 1 Investigations – Inferred Extent of the Chatton Formation (provisional)

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2. 3 WATERS OPERATIONS REPORT – OCTOBER AND NOVEMBER 2018 (Matthew Bayliss)

As expected/ normal operation

Somewhat out of the ordinary

Unexpected/of significant concern

Drinking water supply and demand Status:

Gore raw water sources • Recent rainfall and higher river flows has seen a slight lift in the Coopers Well Levels. • While this has provided some interim relief, the requirement for supplementary pumping during the coming

summer will depend on rainfall and river levels over the coming weeks and months. • The levels of the Jacobstown wells are still high and are not of concern at this stage

Gore water demand

• Water demand is currently averaging 3450m3/per day which is lowest it has been for this time of the year since 2014.

• Targeted leak detection and repair work is ongoing, with further surveys planned for late this year.

Current Well Level

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Mataura raw water sources and consumption

• Outflows from the Pleura Dam are as expected for this time of year. • There has been an increase in water demand for Mataura over recent months, this however is expected to

be a result of ongoing issues with the accuracy of the water meter; improvements to the flow metering arrangement are planned to resolve it.

Drinking water quality and Drinking Water Standards compliance Status

• There have been no compliance issues in recent months. • The 2017/2018 annual New Zealand Drinking Water Standards compliance reports have been received from

the Ministry of Health. Refer to the separate agenda item about this.

Water supply projects Status

• Following recent investigation work and Council approval, a project to install a new deeper bore at the Coopers well field is now underway. This is a high priority project given the current low aquifer levels.

• Bulk Water Fill Station – Detailed design is now being finalised and preparation of RFP /contract documents are in progress.

• A minor renewals contract is being put out to the market for replacement of laterals and valves. • The next stage of planting in the Coopers Well designated area is underway.

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Wastewater compliance

Status

A report regarding the Council’s consent compliance for the 2017/2018 reporting period has been received from Environment Southland. Refer to a separate agenda item about this. Gore

• No compliance issues have been recorded for the 2018/2019 reporting period. • Council staff are working with MVM and Babbage staff to resolve the commissioning issues with the UV

treatment system. A pilot scale trial is being set up to test a potential solution. • A planned shutdown and inspection of the Actiflo plant has been completed. This identified significant wear

and tear on two of the scrapper arms connections. Arrangements are being made to repair these. Mataura

• No compliance issues have been recorded for the 2018/2019 reporting period. Waikaka

• No compliance issues have been recorded for the 2018/2019 reporting period.

Wastewater projects Status

• Replacement of the baffle at the Mataura wastewater treatment plant has now been completed. • A trial plant renewal project at the Mataura wetlands is underway. • An upgrade of the Riverhead Lane pump station pipework is being completed.

Tradewaste/industrial hub Status

• The performance of the Industrial hub (wastewater plant) is still recovering from the high loads that were received during early days of commissioning.

• There has been a significant improvement in the quality of tradewaste received in recent weeks. • A tradewaste consent application from Blue Sky Meats for its site at 95 River Street has been received and is

being processed. • Silver Fern Farms are planning a mid-season shutdown from 9/11/2018 until 21/11/2018.

Stormwater consent compliance Status

A report regarding the Council’s consent compliance for the 2017/2018 reporting period has been received from Environment Southland, refer to a separate agenda item about this.

• Following recent rainfall, compliance monitoring for the 2017/2018 reporting period has now been completed. • There are E-coli exceedance issues at the Doctors Road, Mataura stormwater outfall, ongoing investigations

have not yet identified the cause of this.

Stormwater projects Status

• The renewal and relocation of a stormwater main which passes through 25 Takitimu Street is planned due to this site being developed.

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Customer service requests

Status

• A total of 751 customer enquiries have been received for the year to date. This is notably higher than normal and is a result of extra leaks being identified as part of the leak detection surveys and some minor issues caused by the UFB installation work. This has resulted in a backlog of work for the field team however they are working through this as resources permit.

Customer request summary

Year Total to end of July

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

General Enquiry

2017 61 4 4 11 4 9 5 6 6 5 7 6 8

2018 93 31 13 2 7 5 1 7 11 8 8

Otama 2017 129 11 18 13 29 13 5 3 13 11 13 11 20

2018 94 6 12 11 15 23 3 3 4 6 11

Stormwater 2017 4 0 1 0 0 1 0 2 0 0 0 2 1

2018 5 0 0 0 1 3 0 0 2 0 0

Wastewater 2017 48 9 8 7 3 6 3 6 2 2 2 6 1

2018 41 1 3 5 4 7 1 4 7 1 8

Water 2017 396 38 54 42 34 55 32 33 29 35 44 44 67

2018 517 115 69 60 39 54 43 36 28 42 31

Total 2017 638 62 85 73 70 84 45 50 50 53 66 69 97

2018 751 153 97 78 66 92 48 50 52 57 58

Asset management Status

• A project is underway to improve the accuracy of our asset database. This involves comparing existing hard copy as-built drawings with what is recorded in the electronic asset data base.

• Validation of the AssetFinda data vs fixed asset register valuation is in progress.

Otama rural water supply Status

• The Water Safety Plan for the scheme has now been approved by the Drinking Water Assessor • The next committee meeting is planned for Monday 3 December 2018. • The installation of two new flow meters on the outlets of Pyramid reservoir has now been completed.

Human resources Status:

• The recruitment process for the vacant Network Operator position is ongoing.

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2018-2019 Water Supply Levels of Service – September, October

Council Outcome

Customer Levels of Service

Core Value Performance Measures

Target 2018-2021

Achieved

We have a quality infrastructure with potential for growth.

A potable water supply is provided in urban areas

Quality Safety

Compliance with the bacterial criteria of the NZDWS: (NFPM 1a)

Gore 100% Mataura 100%

2015-2016 Reporting Period Gore – Bacterial Compliance = No Mataura – Bacterial Compliance = Yes 2016-2017 Reporting Period Gore – Bacterial Compliance = No Mataura – Bacterial Compliance = No Both Gore and Mataura plants did not meet distribution zone bacterial compliance due to one transgression at each town during the period. 2017-2018 Reporting Period Gore Distribution Zone Bacterial Compliance = Yes Plant Bacterial Compliance = No Mataura Distribution Zone Bacterial Compliance = Yes Plant Bacterial Compliance = No Otama Distribution Zone Bacterial Compliance = Yes Plant Bacterial Compliance = Yes Note – Remedial actions have been undertaken to ensure plant compliance for the 2018/2019 reporting period.

Compliance with the protozoa criteria of the NZDWS: (NFPM 1b)

Gore 100% by 2020/21 Mataura 100% by 2020/21

2015-2016 Annual Winz survey compliance Gore – Protozoal Compliance - No Mataura – Protozoal Compliance – No 2016-2017 Annual Winz survey compliance Gore – Protozoal Compliance – No Mataura – Protozoal Compliance – No 2017-2018 – Report yet to be completed. Gore – Protozoal Compliance – No Mataura – Protozoal Compliance – No Otama – Protozoal Compliance – No Note – All of the Council’s treatment plants do not meet protozoa compliance, as a result of this upgrades are planned to be completed over the next three years.

Quality Water quality complaints received (per 1,000 connections) (NFPM 4)

8 2015-2016 – Target Not Achieved – 14 complaints 2016-2017 – Target Not Achieved – 9.5 complaints 2017-2018 – Target Achieved – 7.2 complaints 2018-2019 – Year to date – 0.8 complaints

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Council Outcome



Target 2018-2021

Achieved

A reliable service and effective response to queries

Sustainability Real water losses from the reticulation network (NFPM 2)

30% 2015-2016 – Target Not Achieved - 66% Leak detection studies in 2016 have revealed that over half of the water supply is lost to leakage. Increased leak resolution programme is in place currently. 2016-2017 – Target Not Achieved – 42% This is an improvement from the previous year, there has been maintenance and repairs throughout the network to fix the leaks identified in the leak detection studies in 2016. 2017-2018 – Target Not Achieved – 34% Based on average daily consumption of 250L/p/day (Refer to 6.3.5.6 of NZS4404:2010)

Reliability Responsiveness

Response to an urgent customer request (Urban, no water) (NFPM 3a)

60 min 2015-2016 – Target Achieved – 37mins. (Median value used) 2016-2017 – Target Achieved – 15mins. (Median value used) 2017-2018 – Target achieved – 10mins. (Median value used) 2018-2019 – Year to date – 25mins (Median value used)


Resolution of an urgent customer request. (Urban, no water) ( NFPM 3b)

8 working hours

2015-2016 – Target Achieved – 1hr 52mins (Median value used) 2016-2017 – Target Achieved – 58mins (Median value used) 2017-2018 – Target Achieved – 32mins. (Median value used) 2018-2019 – Year to date – 50mins (Median value used)


Response to a non-urgent customer request (NFPM 3c)

5 days 2015-2016 – Target Achieved - 4.7 days (Median value used) 2016-2017 – Target Not Achieved – 5.9 days (Median value used) 2017-2018 – Target Not Achieved – 5.9 days (Median value used) 2018-2019 – Year to date – 1.9 days (Median value used)


Resolution of a non-urgent customer request (NFPM 3d)

14 days 2015-2016 –Target Achieved - 4.9 days (Median value used) 2016-2017 – Target Achieved – 6.2 days (Median value used)

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Council Outcome



Target 2018-2021

Achieved

2017-2018 – Target Achieved –7 days (Median value used) 2018-2019 – Year to date – 1.9 days (Median value used)

Sustainability Average consumption of drinking water (NFPM 5)

500 L/p/day

2015-2016 – Target Achieved - 548 L/p/day (2015-2017 target of 550 L/p/day) 2016-2017 – Target Achieved – 518 L/p/day (2015-2017 target of 550 L/p/day) 2017-2018 – Target Achieved – 355 L/p/day (2015-2017 calculation method unknown)

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2018-2019 Wastewater Levels of Service – September, October

Council Outcome



Current Target

Performance Monitoring/ Source

Target 2018-2021

Achieved

We have a quality infrastructure with potential for growth.

A reliable service: effective response to queries

Reliability Sustainability

The number of dry weather overflows from Council’s sewerage system, (per 1,000 connections) (NFPM 1)

New Measure

CRM database

1 2015-2016 – Target Achieved - No overflows. 2016-2017 – Target Achieved – No overflows. 2017-2018 – Target Achieved – No overflows. 2018-2019 – Year to date – No overflows


Response to a customer request. (Blockage or fault) (NFPM 3a)

New Measure

CRM database Urgent – Blockage General – Fault

Urgent 120 mins General <8 hours

Urgent – 2015-2016 – Target Not Achieved - 820mins (Median value used) General – 2015-2016 – Target Achieved - No complaints received (Median value used) Urgent – 2016-2017 – Target Not Achieved – 137 mins (Median value used) General – 2016-2017 –Target Achieved – 3.47 hrs. Urgent – 2017-2018 – Target Achieved – 112 minutes. (Median value used) General – 2017-2018 – Target Not Achieved – 12 hrs. (Median value used) Urgent – 2018-2019 – Year to date – 17 minutes. (Median value used) General – 2018-2019 – Year to date – No complaints received.

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Council Outcome



Current Target


Target 2018-2021

Achieved


Resolution of a customer request. (Blockage or fault) (NFPM 3b)

New Measure

CRM database

Urgent <8 hrs General 5 days

Urgent – 2015-2016 – Target Not Achieved – 14.9hrs. (Median value used) General – 2015-2016 – Target Achieved - No complaints received. (Median value used) Urgent – 2016-2017- Target Achieved – 4 hrs (Median value used) General – 2016-2017 – Target Achieved – 0.05 days (Median value used)

Urgent – 2017-2018 – Year to date – 10.2 hours. (Median value used)

General – 2017-2018 –Year to date – 1.75 days. (Median value used)

Urgent – 2018-2019 – Year to date –3 hours. (Median value used)

General – 2018-2019 –Year to date – No complaints received.

Wastewater systems are effective and comply with environmental standards

Quality Health

Wastewater complaints received (per 1,000 connections) (NFPM 4)

New Measure

CRM database

<10 2015-2015 – Target Achieved – No complaints received. 2016-2017 – Target Achieved – 3.3 complaints 2017-2018 – Target Achieved – 1.4 complaints 2018-2019 – Year to date – No complaints

We value and respect our environment.

Our waterways and environment are protected from adverse impacts of providing the

Health & Safety Reliability Sustainability Quality Social benefits

Compliance with Council’s resource consents for discharge from its sewerage

Abatement Notice - 0 Infringement Notice - 0 Enforcement Orders - 0 Convictions - 0

Annual Consent Compliance Reports.

AN - 0 IN – 0 EO -0 C- 0

2015-2016 – Target Achieved. 2016-2017 – Target Achieved. 2017-2018 – Target Achieved.

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Council Outcome



Current Target


Target 2018-2021

Achieved

wastewater service.

system measured by the number of abatement notices, infringement notices, enforcement orders and convictions (NFPM 2)

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2018-2019 Stormwater Levels of Service – September, October

Council Outcome



Performance Monitoring/Source

Achievement Target 2018-2021

Achieved

We have quality infrastructure with potential for growth.

A reliable service and effective response to queries

Responsiveness Response to a customer request (Flooding event) (NFPM 3)

CRM Database New measure

60 min

2015-2015 – Target Achieved – No complaints received.



2018-2019 – Year to date – No complaints received.

Quality Stormwater complaints received (per 1,000 properties connected) (NFPM 4) Faults or blockages


8 2015-2015 – Target Achieved – No complaints received.

2016-2017 – Target Achieved – 0.17 complaints received.

2017-2018 – Target Achieved – 1.81 complaints

2018-2019 – Year to date – 0.2 complaints

Homes and properties are not affected by surface flooding caused by the Stormwater Activity

Quality

Health & Safety

Number of flooding events

(NFPM 1a)



2016-2017 – Target Achieved – 2 flooding complaints received.



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Council Outcome



Performance Monitoring/Source

Achievement Target 2018-2021

Achieved

Number of habitable floors affected per 1,000 connected properties (per event) (NFPM 1b)



2016-2017 – Target Achieved – The flooding events both occurred on Robertson Street Gore due to a blockage of the stormwater main from tree roots – no flooding entered habitable floors.



We value and respect our environment

Our waterways and environment are protected from adverse impacts of providing the Stormwater service.

Quality

Sustainability

Social Benefit

Compliance with Council’s resource consents for discharge from its stormwater system measured by the number of abatement notices, infringement notices, enforcement orders and convictions (NFPM 2a-d)

Annual Reports New measure

AN - 0

IN – 0

EO -0

C- 0

2015-2016 – Target Achieved. 2016-2017 – Target Achieved. 2017-2018 – Target Achieved.

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2018-2019 Solid Waste Levels of Service – September, October

Level of Service

How it Contributes to our Council Outcomes

Specific Measure

Performance monitoring methodology/source (how do we measure, or where do we get data from)

Performance Target

Achieved

Year 1

Waste minimisation is promoted to improve the environment.

The reduction of waste disposed of reduces costs to residents and places less pressure on the environment. This has a positive impact on economic and environmental outcomes.

Volume of waste per capita being disposed of at the regional landfill.

Regional landfill weighbridge records

Material discarded <650kg per capita (across Southland)

2015-2016 – Target Achieved – 636kgs 2016-2017 – Target Not Achieved – 660kgs 2017-2018 – Target Not Achieved – 691kgs (solid waste to landfill increased due to the emergency responses for Oyster Farming/Cattle disease)

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3. REPORT ON 2017/2018 COMPLIANCE WITH THE DRINKING WATER STANDARDS FOR NEW ZEALAND 2005 (REVISED 2008) AND DUTIES UNDER THE HEALTH ACT (Matthew Bayliss)

(Report from 3 Waters Asset Manager - 05.11.18) Introduction

Following the completion of the drinking-water annual survey in July and August 2018, the attached reports on compliance with the Drinking Water Standards for New Zealand 2005 (revised 2008), and duties under the Health Act 1956 for the Gore District Council’s registered drinking-water supplies have been received. Compliance A summary of the Council’s water supply compliance and any required remedial actions is as follows:

• All requirements of the Health Act were met for all schemes. • Full bacterial and chemical compliance in the distribution network was

achieved for all schemes. • The Gore and Mataura water treatment plants did not meet the bacterial

compliance requirements. This was due to appropriate calibration of our ageing turbidity monitoring equipment not being achieved. This monitoring equipment will be replaced as part of the planned water treatment plant upgrades. In the interim, and as reported to the Council on 7 August 2018, an increased manual monitoring programme has been implemented to ensure bacteriological compliance can be achieved. Bacterial compliance for the Otama treatment plant was met.

• The appropriate Cyanotoxin, Chemical and Radiological compliance criteria for all schemes were met.

• All three water supply schemes did not meet the treatment requirements for Protozoa. Upgrades to the Gore and Mataura water treatment plants are planned to achieve Protozoa compliance. An options assessment has been completed for the Otama treatment plant with further water quality monitoring information being collected before a preferred option is selected.

RECOMMENDATION THAT the report be received.

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File Reference: GEN_1_7

9th October 2018

Stephen Parry Chief Executive Officer Gore District Council PO Box 8 Gore 9740 Dear Stephen Report on 2017/18 Compliance with the Drinking Water Standards for New Zealand 2005 (Revised 2008) and Duties under the Health Act 1956 Following the completion of the drinking-water annual survey in July/August 2018, please find attached the 2017/18 report on compliance with the Drinking Water Standards for New Zealand 2005 (Revised 2008), DWSNZ2005/08, and duties under the Health Act 1956 for the Gore District Council’s (GDC’s) registered drinking-water supplies. The compliance report identifies where GDC’s registered drinking water supplies complied or did not comply with the DWSNZ2005/08 and where GDC met the relevant duties under the Health Act 1956 for the period of 1st July 2017 – 30th June 2018. We wish to especially thank Alex McKenzie for his assistance with completing the annual survey. The following is a summary of the annual survey findings for your attention: DWSNZ2005/08 Compliance

Bacterial compliance was not achieved for all treatment plants. This was primarily due to on-line monitoring equipment being unable to be appropriately calibrated. Please note that monitoring data requires to be provided in a form that is retrievable and able to be appropriately audited.

Bacterial compliance was achieved for all distribution zones.

Catchment Risk Assessments have been completed within the last 5 years for Gore and Mataura water supplies and protozoa log credits assigned to the treatment plants. However, protozoa compliance was not achieved for all treatment plants due to insufficient treatment processes in place to achieve the assigned log credits.

Public Health South

Dunedin: Private Bag 1921, Dunedin 9054 Ph: 03 476 9800 Fax: 03 476 9858

Invercargill: PO Box 1601, Invercargill 9840 Ph: 03 211 0900 Fax: 03 211 0899

Queenstown: PO Box 2180, Wakatipu, Queenstown 9349 Ph: 03 450 9156 Fax: 03 450 9169

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Cyanotoxin compliance was met as there were no known transgressions or events during the compliance period. A Cyanobacteria Management Plan is required for the Mataura water supply as specified in the water safety plan.

Chemical compliance was met as there were no chemical determinands assigned to the water supplies. It is recommended that chemical sampling is carried out as a minimum every 5 years.

Public notices for plumbosolvency were provided to consumers twice during the compliance period.

Radiological compliance was met for all ground water supplies.

Health Act Requirements

GDC did met all their Health Act obligations. Please do not hesitate to contact me if you have any questions, either by phone: (03) 476-9863 or by email: [email protected]. Yours sincerely,

Rosemarie Nelson Drinking Water Assessor South Island Drinking Water Assessment Unit – Dunedin Copy to: Ramesh Sharma, Infrastructure General Manager Matt Bayliss, 3 Waters Asset Manager Alex McKenzie, 3 Waters Technical Administrator

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mailto:[email protected]

Report on Compliance with the Drinking-water Standards for New Zealand 2005 (Revised 2008) and duties under the Health Act 1956 For Period: 1 July 2017 to 30 June 2018 Drinking Water Supplies Gore (GOR001) Mataura (MAT002) Water Supplier Gore District Council

South Island Drinking Water Assessment Unit Public Health South, Wakari Hospital, Main Block, Level 2, Dunedin 9010 Private Bag 1921, Dunedin 9054

Report Identifier GoreDistrictCouncil_DWSNZ2005/08Compliance_230918_v1

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Report Identifier: GoreDistrictCouncil_DWSNZ2005/08Compliance_230918_v1 Scope 1 Appendix 1 Compliance Report for Network supplies DWSNZ 2005 Version 1: 1 September 2014 Page 2 of 10

Terminology Non-Compliance = Areas where the drinking water supply does not comply with the Drinking-water Standards for New Zealand 2005 (Revised 2008), (DWSNZ2005/08).

Treatment Plants Bacterial compliance is under section 4 of the DWSNZ2005/08 Protozoal compliance is under section 5 of the DWSNZ2005/08 Cyanotoxin compliance is under section 7 of the DWSNZ2005/08 Chemical compliance is under section 8 of the DWSNZ2005/08 Radiological compliance is under section 9 of the DWSNZ2005/08

Treatment Plants: Bacterial compliance

Summary of Treatment Performance Monitoring Results – Criterion 2A for continuously monitored chlorine disinfected water leaving the treatment plant

Plant name Treatment Parameters

Summary of monitoring results Compliance monitoring period =

1 day

Overall Compliance

Gore, Hilbre Avenue (TP00084)

Criterion 2A – Turbidity, FACE

Not reviewed Non-compliant

Gore, Wentworth Street (TP00085)

Criterion 2A – Turbidity, FACE


Mataura (TP00086) Criterion 2A – Turbidity, FACE


Summary of compliance with sampling / analytical / remedial / operational requirements The compliance period assessed compliance against DWSNZ2005/08, Criterion 2A for continuously monitored chlorine disinfected water leaving the treatment plant. It allows bacterial compliance to be demonstrated without E. coli monitoring, provided certain sampling and analytical measurements are met including the continuous monitoring of FAC, pH and turbidity. FACE must be at least 0.2mg/L for 98% or more of the compliance period. The compliance monitoring period is for one day. Gore, Hilbre Avenue (TP00084), Gore, Wentworth Street (TP00085) and Mataura (TP00086) treatment plants did not meet Criterion 2A for continuously monitored chlorine disinfected water leaving the treatment plant. Further detail of the data provided is under “Summary of Audit Activities to verify DWSNZ2005/08 Monitoring Data”. E. coli sampling was not required under Criterion 2A, however it was noted that this was being carried out at all treatment plants. The sample results were not reviewed in any detail to specifically comment on.

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Treatment Plants: Protozoa compliance

Plant Name Protozoal Risk Category Log Credit Required

Gore, Hilbre Avenue (TP00084) Catchment Risk Category Section 5.2.1.1 4

Gore, Wentworth Street (TP00085) Catchment Risk Category Section 5.2.1.1 4

Mataura (TP00086) Catchment Risk Category Section 5.2.1.1 4

Summary of Compliance with Risk Categorisation process

Catchment Risk Assessments (CRA) must be made at, at least five yearly intervals in accordance to DWSNZ2005/08, Section 5.2.1.1. Gore, Hilbre Avenue (TP00084) and Gore, Wentworth Street (TP00085) Treatment Plants - protozoal log credits were re- assigned on July 2018, following a Catchment Risk Assessment (CRA). Four protozoa log credits were assigned to Jacobstown Wells (G00051) and Coopers Wells (G00052). The next re-assessment will be required in July 2023.

Mataura (TP00086) Treatment Plant – Four protozoal log credits were assigned in November 2016 following a CRA. The next re-assessment will be required in July 2021. It was noted in the letter, 30th November 2016, the catchments for Mataura are increasingly coming under pressure due to land-use changes. If there are significant changes, consideration should be given to completing a re-assessment earlier than the required 5 yearly timeframe. It may also be appropriate to undertake raw water Cryptosporidium monitoring to confirm the required log credits.

Summary of Treatment Processes and associated Log Credits

Plant name Treatment Process1

Potential Log Credit

Available

Summary of Turbidity results

Compliance with all other requirements

of criterion2

Log credit achieved

Gore, Hilbre Avenue (TP00084)

Pressure sand filtration

0 0 No 0

Gore, Wentworth Street (TP00085)

Non-secure groundwater

0 0 No 0

Mataura (TP00086)

Coagulation Sedimentation Filtration

3.0 0 No 0

1 Treatment Process meeting DWSNZ definition of available combination of treatment technology 2 Further detail provided below under log credit assessment

Summary of Log Credit Assessment Gore, Hilbre Avenue (TP00084) Treatment Plant did not demonstrate protozoa compliance due to insufficient treatment processes in place.

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Gore, Wentworth Street (TP00085) Treatment Plant had no treatment processes in place that can be assigned protozoa log credits. Mataura (TP00086) Treatment Plant did not comply with DWSNZ2005/08, Section 5.4 for coagulation, sedimentation and filtration. An exceedance was reported on 13th September 2017 where GDC reported that turbidity exceeded 0.5 NTU for more than 1% of the time over a 1 month period and 1.0 NTU for the duration of any three minute period. Compliance data was not requested during the annual survey. Please be aware that there is insufficient treatment plant processes at the Mataura treatment plant to be able to achieve full protozoa compliance.

Log Credit Total (Total of all Treatment Processes) Achieved: Gore, Hilbre Avenue (TP00084) - 0 log credits achieved Gore, Wentworth Street (TP00085) - 0 log credits achieved Mataura (TP00086) – 0 log credits achieved

Treatment Plants: Cyanotoxin compliance Gore water supply is considered to be supplied from ground water so this section did not apply to the Jacobstown bore during the compliance period. Section 7 of the DWSNZ2005/08 cautions that unconfined bores <10m deep could contain cyanotoxins due to run-off or seepage from ponded water nearby or wet soil that supports the growth of cyanobacteria. There were no known transgressions or events (i.e. cyanobacteria blooms) during the compliance period that applied to the Jacobstown Well and the Coopers Wells.

Mataura has been defined as a surface water supply. The Mataura water safety plan specifies that a Cyanobacteria Management Plan for the Pleura Dam and Mataura River (Emergency Source) is required. There were no known transgressions or events (i.e. cyanobacteria blooms) during the compliance period.

Treatment Plants: Chemical compliance

There are no Priority 2 determinands assigned to the Gore and Mataura Treatment Plants.

Public notices for plumbosolvency were provided to consumers twice during the compliance period.

Treatment Plants: Radiological compliance

Section 9.4 of the DWSNZ2005/08 applies for the monitoring frequency for radiological determinands of 10 years, for bore water supplies that are not considered to be equivalent to surface water. All new underground sources must be tested before connection to a reticulated drinking-water supply. Gore Water Supply - Radiological testing was carried out in 2016 as it was determined by GDC that Coopers Wells and Jacobstown Wells were all ground water sources drawn from aquifers. Samples were taken from - Jacobstown No. 3 bore on 6/10/16; Coopers Well 1, Coopers Well, 2 Coopers Well 2A and Jacobstown Well on 11/10/16. The samples were sent to the National Centre for Radiation Science (ESR) and tested for Radon-222, Total Alpha Concentration and Total Beta Concentration. The results

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showed that all sources had radiological determinands below the maximum acceptable values shown in DWSNZ2005/08, Table 2.4.

Mataura Water Supply - is considered to be a surface water supply and therefore radiological testing did not apply during the compliance period.

Distribution Zones Distribution zone bacterial compliance is under section 4.4 of the DWSNZ2005/08 Cyanotoxin compliance is under section 7 of the DWSNZ2005/08 Chemical compliance is under section 8 of the DWSNZ2005/08 The following compliance information is derived from Drinking - Water Online, DWO.

Distribution Zones: Bacterial compliance Summary of E. coli sampling results

Distribution zone name Number of samples required

Number of samples collected

Number of transgressions

Compliance

Gore (GOR001GO) 64 64 0 Compliant

Mataura (MAT002MA) 52 56 0 Compliant

Summary of compliance with general sampling / analytical / remedial action requirements The Gore distribution zones met requirements under Criterion 6A for the number of samples collected, days of the week used and interval between samples. No E. coli transgressions occurred during the compliance period. The Mataura distribution zones met requirements under Criterion 6A for the number of samples collected and days of the week used. DWA leniency was given for maximum interval between samples. Further information on the data provided is detailed under “Summary of Audit Activities to verify DWSNZ2005/08 Monitoring Data”. No E. coli transgressions occurred during the compliance period.

All monitoring samples were analysed by WaterCare Services, Invercargill, a Ministry of Health approved laboratory. Further information on the data provided is detailed under “Summary of Audit Activities to verify DWSNZ2005/08 Monitoring Data”.

Distribution Zones: Cyanotoxin compliance There were no Cyanotoxin Priority 2 determinands assigned to these distribution zones.

Distribution Zones: Chemical compliance There were no Chemical Priority 2 determinands assigned to these distribution zones. It is recommended that chemical sampling is carried out as a minimum every 5 years.

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Summary of Audit Activities to Verify DWSNZ2005/08 Monitoring Data

Treatment Plants Further discussion on complying with DWSNZ2005/08, Section 4.3.2.1 - Compliance Criterion 2A for continuously monitored chlorine disinfected water leaving the treatment plant

DWSNZ2005/08, Criterion 2A requires that the sampling and analytical requirements in sections 4.3.6 and 4.3.7 are met, where applicable. Section 4.3.6.1 mentions that the “…..referee methods for Priority 1 and related operational requirements are in Appendix A2 which includes procedures for standardisation and verification, where appropriate.”

DWSNZ2005/08, Appendix 2: Sampling requirements and referee methods for determinands, Section A2.4: Turbidimeters mentions that “standardisation must be undertaken by personnel approved to do so by the DWA, and in accordance with the instrument manufacturer specified procedures and frequency or three – monthly whichever is more frequent.”

As approval is a DWA function, this was not considered as a non-compliance, however the second part is the issue as GDC have said this was not being carried out three monthly during the compliance period as the Operators were not confident in doing so. It wasn’t explained how the Operator’s would know if there was an issue with the meters. It wouldn’t be acceptable to only read the meters during visits, especially as turbidimeter readings are known to drift, meaning inaccuracies in data readings can occur. There is an expectation from the Ministry of Health that water suppliers need to supply Drinking Water Assessor’s in a form that is retrievable and auditable (as per section 3.2). GDC has notified the DWA that they will be moving to Criterion 1 - E. coli monitoring only for the 2018/19 compliance period.

Distribution Zones Gore and Mataura distribution zones The audit period for Gore and Mataura distribution zones covered the full compliance period for bacterial compliance (1 July 2017 – 30 June 2018). The E. coli monitoring results entered by GDC into Drinking Water Online (DWO) were verified against DWSNZ2005/08, section 4.4.1 - compliance criterion 6A for drinking-water in a distribution zone. This was carried out by downloading the data into excel spreadsheets and calculating the number of samples taken, days of the week used and interval between samples. Sufficient evidence and/or explanation where there were discrepancies in the data was provided, if necessary, or followed up between the Council and DWA during the annual survey. The results were confirmed in DWO before final submission to Environmental Science and Research Limited (ESR) and to the Ministry of Health’s annual report.

DWA leniency applied for Mataura distribution zone Leniency was given for one missed interval. GDC provided a reason on how this had happened and what measures they had put in place to prevent re-occurrences. A sampling run of the distribution zones and treatment plants was scheduled for 28th February 2018. An error occurred in the sampling schedule where the 28th February 2018 Mataura distribution zone sample site was entered into the previous sampling run (19th February 2018) in the schedule. This caused two Mataura distribution zone samples to take place on 19th February 2018 and for the 28th February 2018 sample to be skipped, resulting in a 14 day interval between the 19th February 2018 and

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5th March 2018. GDC have since created a spreadsheet that automatically calculates schedule compliance in order to prevent any mistakes of this nature re-occurring.

Summary of DWSNZ Compliance Treatment Plants

Plant Code Compliance

Bacterial Protozoa Cyanotoxin Chemical Radiological

Hilbre Avenue, Gore

TP00084 x x √ √ √

Wentworth Street, Gore

TP00085 x x √ √ √

Mataura TP00086 x x √ √ N/A

Full compliance with the Drinking - water Standards for New Zealand 2005 (Revised 2008) was not achieved for the Hilbre Avenue, Gore (TP00084), Wentworth Street, Gore (TP00085) and Mataura (TP0086) treatment plants for the period 1st July 2017 to 30th June 2018.

Distribution zones

Zone Code Compliance

Bacterial Chemical

Gore GOR001GO √ √

Mataura MAT002MA √ √

Full compliance with the Drinking - water Standards for New Zealand 2005 (Revised 2008) was achieved for the Gore (GOR001GO) and Mataura (MAT002MA) distribution zones for the period 1st July 2017 to 30th June 2018.

Assessment of Compliance with Duties of Drinking-water Suppliers under the Health Act 1956 The duties of the water supplier under the Health Act 1956 were met for the Gore and Mataura water supplies.

Section 69S – Duty of suppliers in relation to the provision of drinking water

Met for both supplies

This decision is based on the following – Mataura - GDC have taken all practicable steps to provide an adequate supply of drinking water to all points of supply at all times. There were no planned works exceeding 8 hours that were reported to the Medical Officer of Health over this time. GDC notified PHS of emergency water pumping in January 2018 due to a reduction of raw water storage. They provided an explanation on how they were maintaining sufficient water to the community by using the Mataura River and supplying a water tanker (latter due to taste and odour issues). Gore - GDC have taken all practicable steps to provide an adequate supply of drinking water to all points of supply at all times. There were no planned works exceeding 8 hours that were reported to the

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Medical Officer of Health over this time. GDC notified PHS of the water restrictions due to drought on 29/01/18 that resulted in the supplementation of the bore with the Mataura River and supplying a water tanker due to taste and odour issues from consumers.

Section 69U – Duty to take reasonable steps to contribute to protection of source of drinking water

Met for both supplies

This decision is based on the following – Mataura – the WSP documents land use changes in the catchment and how this will be managed through resource consents submission and continuing to increase landowner’s awareness in protecting the drinking water source. GDC keep in regular contact with the landowner of the catchment immediately surrounding the Pleura Dam and Waikana Intake, and carry out a site visit fortnightly. The Gore District Council Water Supply Bylaw 2015 identifies the Pleura and Waikana Stream catchment area’s as protected open catchments requiring notification in the event of any spillage or event which is likely to release hazardous substances into the waters of the catchment. The area immediately surrounding the Pleura Dam is identified as a controlled catchment limiting access and activities that can take place in this area.

Gore – the WSP identifies the risks due to land-use changes, particularly dairy discharges and that these will be recognised through the district plan and RMA processes. On-going communication with landowners to ensure they are aware of the activities that may impact on the quality of the drinking water source. GDC reported that 6 weekly source water monitoring of E. coli by Environment Southland is being carried out which will aid in identifying changes in the source water. A CRA identifying potential sources of contamination was also submitted and 4 – log credits assigned to the treatment plants. Four residential dwellings have been identified on raw water connections, which have been placed on permanent boil water notices, it is proposed to classify these connections as a Rural Agricultural Drinking Water Supply. The Gore District Council Water Supply Bylaw 2015 identifies the Coopers and Jacobstown well field catchment areas as protected open catchments requiring notification in the event of any spillage or event which is likely to release hazardous substances into the waters of the catchment. In 2016 the Council obtained a designation over the 14 ha area surrounding the well field limiting the farming activities carried out in this area. Since obtaining this designation the Council has developed a land management plant for the area, which includes the phased planting of indigenous vegetation within the designated area, the first phase of this was completed during this reporting period. The area immediately surrounding the Jacobstown well field is currently used as a gravel storage area by a local contractor. The Council has however been working with the contractor who will be ending their occupation of the site in November 2018. As part of this managed exit the contractor will be rehabilitating the site to an acceptable standard. For both supplies - GDC are participating in discussions to establish a Southern Joint Working Group for Drinking Water Safety, it is anticipated that this joint working group will result in closer working relationships with the Regional Council and District Health Board improving understanding and communication pathways which in turn will result in and improved source protection.

Section 69ZD – Duty to keep records and make them available Met for both supplies

This decision is based on the following – GDC have shown to be maintaining monitoring records following the assessment of the samples results on DWO. GDC make records readily available to the DWA.

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Section 69ZE – Duty to investigate complaints Met for both supplies

This decision is based on the following – All complaints received are recorded in the Councils Customer Request Management System (CRM) and allocated to the appropriate staff member. An initial assessment is completed on all CRM’s allowing the response to be prioritised, with public health complaints considered to be high priority. A register of complaints received for this compliance period was provided to the DWA during the annual survey. In summary, there were 44 complaints identified for the drinking water supplies of which 40 were defined as taste/colour/smell water issues. There were no notable rise in complaints as a direct result of changing to the emergency Mataura River in January 2018 for both supplies.

Medium Network Supply (serving a population of 5001 to 10,000 people) The Gore Water Supply falls into the category of a medium drinking water supply under the Health Act 1956. Therefore the legal requirements to take all practicable steps to comply with the Drinking water Standards for New Zealand 2000 applied from 1st July 2013. Minor Network Supplies (serving a population of 501 to 5000 people) The Mataura Water Supply falls into the category of a minor drinking water supply under the Health Act 1956. Therefore the legal requirements to take all practicable steps to comply with the Drinking water Standards for New Zealand 2000 applied from 1st July 2014. The results in this report relate only to the compliance of the above listed treatment plants and distribution zones.

Information in this report may be provided to the Ministry of Health at their request. With the exception of the Ministry of Health, this report shall not be reproduced without the approval of the South Island Drinking-water Assessment Unit and Gore District Council.

Completed: 9th October 2018

Rosemarie Nelson IANZ Accredited Drinking Water Assessor South Island Drinking-water Assessment Unit, Dunedin

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Assessment Report Information Report identifier GoreDistrictCouncil_DWSNZ200508Compliance_230918_v1

Drinking-water Assessment Unit (Inspection Body)

South Island Drinking Water Assessment Unit Public Health South Wakari Hospital, Main Block, Level 2, Taieri Road, Dunedin 9010 Private Bag 1921, Dunedin 9054 Phone Number: (03) 476-9800

Drinking-water Assessor Rosemarie Nelson

Assessment Date 23/09/18

Description of assessment work

Assessment of Compliance with Drinking-water Standards for New Zealand 2005 (Revised 2008) for: Gore Water Supply (GOR001) – Sources: Jacobstown Well (G00051), Coopers Wells (G00052), Treatment Plants: Hilbre Avenue, Gore (TP00084), Wentworth Street, Gore (TP00085) and Distribution Zone: Gore (GOR001GO) Mataura Water Supply (MAT002) - Source: Pleura Stream (S0056), Treatment Plant: Mataura (TP00086) and Distribution Zone: Mataura (MAT002MA)

Equipment Used Drinking Water Online (DWO) was used to review compliance data

Water Supply Owner / Person Responsible

Matt Bayliss Gore District Council

Assessment method Standard assessment as per Scope 1A Procedure Drinking-water Standards for New Zealand 2005 (Revised 2008) Health Act 1956

Documents and Information

Drinking-water Standards for New Zealand 2005 (Revised 2008) Part 2A Health Act 1956 NCRL (ESR) IANZ Radiological Results for Gore Water Supply, dated 21/10/16 Gore and Mataura Water Safety Plans Email correspondence and data provided between Gore District Council and DWA during the annual survey

Site of Assessment Public Health South, Dunedin

Omissions from proposed assessment

Nil

Sub-contracted work Nil

Document checked by: A J Haskell IANZ Accredited Drinking Water Assessor 5th October 2018

Release of report authorised by:

Rosemarie Nelson IANZ Accredited Drinking Water Assessor

9th October 2018

If you do not agree with the findings of this report a written appeal must be lodged with the Technical Manager South Island Drinking Water Assessment Unit, PO Box 1475, Christchurch 8140, within 2 months of receipt of this report. The Technical Manager will arrange for a review to be undertaken using the Ministry of Health appeals procedure.

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File Reference: CWS_6_OTA004

30th October 2018 Matt Bayliss 3 Waters Asset Manager Gore District Council P O Box 8 Gore 9740 Dear Matt Report on 2017/18 Compliance with the Drinking Water Standards for New Zealand 2005 (Revised 2008) and Duties under the Health Act 1956 Following the completion of the drinking-water annual survey in July/August 2018, please find attached the 2017/18 report on compliance with the Drinking Water Standards for New Zealand 2005 (Revised 2008), DWSNZ2005/08, and duties under the Health Act 1956 for the Otama drinking water supply. Alex’s assistance with the annual survey was very much appreciated. The compliance report identifies where Otama drinking water supply complied or did not comply with the DWSNZ2005/08 for the period of 1st July 2017 – 30th June 2018. It also aims to provide an explanation on how these standards can be met. Please do not hesitate to contact me if you have any questions on either: (03) 476-9863 or by email: [email protected]. Yours sincerely,

Rosemarie Nelson Drinking Water Assessor South Island Drinking Water Assessment Unit – Dunedin

Public Health South

Dunedin: Private Bag 1921, Dunedin 9054 Ph: 03 476 9800 Fax: 03 476 9858

Invercargill: PO Box 1601, Invercargill 9840 Ph: 03 211 0900 Fax: 03 211 0899

Queenstown: PO Box 2180, Wakatipu, Queenstown 9349 Ph: 03 450 9156 Fax: 03 450 9169

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mailto:[email protected]

Report on Compliance with the Drinking-water Standards for New Zealand 2005 (Revised 2008) and duties under Health Act 1956 For Period: 1 July 2017 to 30 June 2018 Drinking Water Supplies Otama (OTA004) Water Supplier Gore District Council

South Island Drinking Water Assessment Unit Public Health South, Wakari Hospital, Main Block, Level 2, Dunedin 9010 Private Bag 1921, Dunedin 9054

Report Identifier Otama_DWSNZ2005/08Compliance_301018_v1

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Report Identifier: Otama_DWSNZ2005/08Compliance_301018_v1 Scope 1 Appendix 1 Compliance Report for Network supplies DWSNZ 2005 Version 1: 1 September 2014 Page 2 of 8

Terminology Non-Compliance = Areas where the drinking water supply does not comply with the Drinking-water Standards for New Zealand 2005 (Revised 2008), (DWSNZ2005/08).

DWSNZ2005/08 Compliance Criteria Gore District Council have mentioned their aim is to demonstrate compliance with the water quality standards by following a Water Safety Plan compliance criteria approach, under Section 10 (Small Water Supplies, Alternative Compliance Criteria) of the DWSNZ2005/08. Section 10.2 - compliance requirements have not yet been met, so therefore the compliance requirements for the supply are in the main body of the DWSNZ2005/08, sections 4, 5 and 7 to 9.

Treatment Plants Bacterial compliance is under section 4 of the DWSNZ2005/08 Protozoal compliance is under section 5 of the DWSNZ2005/08 Cyanotoxin compliance is under section 7 of the DWSNZ2005/08 Chemical compliance is under section 8 of the DWSNZ2005/08 Radiological compliance is under section 9 of the DWSNZ2005/08

Treatment Plant: Bacterial compliance

Summary of E. coli sampling results using Criterion 1 (Escherichia coli monitoring only)

Plant name Number of samples required



Compliance

Otama (TP00480)

Criterion 1 – 52 E. coli samples

51 0 Compliant – refer to comment below

Summary of compliance with sampling / analytical / remedial / operational requirements The following areas need to be met for E. coli compliance monitoring of water leaving the treatment plant for water supplies serving populations up to 500 -

An E. coli sample taken once per week

No more than 13 days between each sample

Use at least 5 days of the week (i.e. sample on different days of the week)

A Ministry of Health approved laboratory for analysing E. coli samples

No E. coli Transgressions (an investigation/remedial action must be undertaken if E. coli is found).

Otama treatment plant (TP00480) complied with Criterion 1 (Escherichia coli monitoring only) for the days of the week used and maximum interval between samples. There were no E. coli transgressions. All

36


monitoring samples were analysed by WaterCare Services, Invercargill, a Ministry of Health approved laboratory.

The treatment plant did not fully comply with Criterion 1 (Escherichia coli monitoring only) for drinking-water leaving the treatment plant due to inadequate number of samples taken. DWA leniency was given as GDC reported at the time this occurred. The sample was missed on 08/02/18 due to flooding breaking the main transmission pipeline attached to the Pyramid Bridge. GDC undertook appropriate remedial action. Further discussion has been made under Summary of Audit Activities to verify DWSNZ Monitoring Data.

Treatment Plant: Protozoa compliance

Plant Name Protozoal Risk Category Log Credit Required

Otama (TP00480) Catchment Risk Assessment, Section 10.2 3

Summary of Compliance with Risk Categorisation process A Catchment Risk Assessment was carried out in April 2018 in accordance to Section 10.2 of the DWSNZ2005/08. Three protozoa log credits have been assigned to the treatment plant.

Summary of Treatment Processes and associated Log Credits

Plant name Treatment Process1

Potential Log Credit Available

Summary of Turbidity results

Compliance with all other requirements of criterion2

Log credit achieved

Otama (TP00480)

Nil 0 0 No 0

1 Treatment Process meeting DWSNZ definition of available combination of treatment technology 2 Further detail provided below under log credit assessment

Summary of Log Credit Assessment Otama treatment plant (TP00480) has no treatment processes in place that can be assigned log credits. Log Credit Total (Total of all Treatment Processes) Achieved: Otama – 0 log credits achieved

Treatment Plant: Cyanotoxin compliance The Cyanotoxin compliance requirements apply to surface water sources that have previously experienced algal blooms or have been judged to be at risk of algal toxin bloom development. In previous compliance reports, Otama has been considered to be a ground water supply meaning this section has not applied. However, the recently submitted WSP recognises that the bore is 8m deep and section 7 of the DWSNZ2005/08 mentions that unconfined bores less than 10 m deep could contain

37


cyanotoxins due to runoff or seepage from ponded water or nearby wet soil that supports the growth of cyanobacteria. It is therefore recommended that GDC investigate the applicability of this section and, if necessary what action is necessary to comply.

Treatment Plant: Chemical compliance

There are no Chemical Priority 2 determinands assigned to the Otama treatment plant.

Plumbosolvency All drinking water supplies in New Zealand are considered to have plumbosolvent water (i.e. corrodes metal plumbing fittings), unless demonstrated otherwise, and this may give rise to undesirable concentrations of lead or other metals in the supply. Please note this is only a compliance requirement for supplies servicing more than 500 people (Section 8.2.1.4, DWSNZ2005/08) or participating supplies having an approved WSP (Section 10, DWSNZ2005/08). Section 10.5 of the DWSNZ2005/08 states that it is not necessary to test for plumbosolvency, but consumers should be warned of this fact and advised at least annually to flush about 500ml of water (about two standard glasses) from the tap each morning. Gore District Council provided public notices for plumbosolvency to consumers twice in the last year.

Treatment Plant: Radiological compliance

The monitoring frequency for radiological determinands is 10 years for bore water supplies that are not considered to be equivalent to surface water need to comply with Section 9.4 of the DWSNZ2005/08. All new underground sources must be tested before connection to a reticulated drinking-water supply. Otama has been defined as a ground water supply and therefore radiological testing may apply. It is recommended that this is confirmed.

Distribution Zones Distribution zone bacterial compliance is under section 4.4 of the DWSNZ2005/08 Cyanotoxin compliance is under section 7 of the DWSNZ2005/08 Chemical compliance is under section 8 of the DWSNZ2005/08 The following compliance information is derived from Drinking Water Online, DWO

Distribution Zone: Bacterial compliance Summary of E. coli sampling results

Distribution zone name Number of samples required



Compliance

Otama (OTA004OT) 12 19 0 Compliant

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Summary of compliance with general sampling / analytical / remedial action requirements To meet compliance for E. coli monitoring in the distribution zone using DWSNZ2005/08, Criterion 6A, all of the following areas need to be met –

A minimum of 12 samples per year (i.e. one per month)

No more than 45 days between each sample

Use at least 2 days of the week (i.e. sample using different days of the week)

No E. coli transgressions (an investigation/remedial action must be undertaken if E. coli is found)

A Ministry of Health approved laboratory must be used to test the E. coli samples.

Otama distribution zone (OTA004OT) complied with DWSNZ2005/08, Criterion 6A (Escherichia coli monitoring only) for the number of samples collected, days of the week used, interval between samples and no E. coli transgressions. All monitoring samples were analysed by WaterCare Services, Invercargill, a Ministry of Health approved laboratory.

Distribution Zone: Cyanotoxin compliance Cyanotoxin has not been assigned as a determinand for this distribution zone.

Distribution Zone: Chemical compliance There are no Chemical Priority 2 determinands assigned to the distribution zone.

Summary of Audit Activities to Verify DWSNZ Monitoring Data The Otama drinking water supply was assessed for compliance against the main body of the DWSNZ2005/08, during the compliance period.

The audit period for the Otama water supply was a 12 month period for bacterial compliance at the treatment plant and distribution zone. E. coli monitoring results entered by GDC into Drinking Water online (DWO) were verified during the annual survey. The data was verified against DWSNZ2005/08, section 4.3.1 – compliance criterion 1 for drinking-water leaving the treatmet plant and section 4.4.1 compliance criterion 6A for drinking-water in a distribution zone. This was completed by the data being downloaded into excel spreadsheets and calculating the number of samples taken, days of the week used and interval between samples. Any issues/discrepancies were followed up and an agreement reached between GDC and the Drinking Water Assessor (DWA) with the results confirmed in DWO before final submission to ESR and inclusion in the Ministry of Health’s annual report.

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Summary of DWSNZ Compliance Treatment Plants

Plant Code Compliance

Bacterial Protozoa Chemical Radiological

Otama TP00480 √ x Unknown Unknown

Full compliance with the Drinking - water Standards for New Zealand 2005 (Revised 2008) was not achieved for the Otama (TP00480) treatment plant for the period 1st July 2017 to 30th June 2018.

Distribution zones

Zone Code Compliance

Bacterial Chemical

Otama OTA004OT √ √

Full compliance with the Drinking - water Standards for New Zealand 2005 (Revised 2008) was achieved for the Otama (OTA004OT) distribution zones for the period 1st July 2017 to 30th June 2018.

Assessment of Compliance with Duties of Drinking-water Suppliers under the Health Act 1956 The duties of the water supplier under the Health Act 1956 have all been met.

Section 69S – Duty of suppliers in relation to the provision of drinking water

Met

This decision is based on the following - GDC have taken all practicable steps to provide an adequate supply of drinking water to all points of supply at all times. There were no planned works exceeding 8 hours that were reported to the Medical Officer of Health over this time. An emergency did occur in February 2018 where the Pyramid Bridge was taken out as a result of flooding causing the main transmission line to be broken. GDC reacted promptly, acknowledging that consumers are required to have a minimum of two days on-site storage, monitoring the storage tanks at the two schools and supplying a water tank to the community. It was considered that due to GDC being focused on the emergency response ensuring that all affected consumers had access to a safe supply of drinking water and making arrangements to have the pipeline repaired as quickly and safely as possible, GDC did not, notify the Medical Officer of Health within a 24 hour period after the commencement of the interruption (69S, (3a)). Taking all things into consideration, GDC met this provision.

Section 69U – Duty to take reasonable steps to contribute to protection of source of drinking water

Met

This decision is based on the following - The draft WSP provides some good risk analysis of the catchment, however, it only goes so far as to look at the immediate concerns of the bores, i.e., E. coli, chemical monitoring, fencing around bore. GDC staff complete site visits to the well head weekly allowing any significant changes in the catchment immediately surrounding the well head to be identified. GDC are participating in discussions to establish a Southern Joint Working Group for Drinking Water Safety, it is anticipated that this joint working group will result in closer working relationships with the Regional Council and District Health Board improving understanding and communication

40


pathways which in turn will result in an improved source protection. An improvement item will be added to the WSP to engage with the Regional Council and relevant property owners to improve awareness regarding potential risks in the surrounding area. A CRA was completed during the compliance period under Section 10, DWSNZ2005/08. Following the bridge washout which disrupted supply, GDC have completed an investigation into improving the resilience of the supply including consideration to alternative water supplies. A report Otama Rural Water Scheme Committee - Water main reinstatement cost and improvement options 11 May 2018 was provided to the DWA during the annual survey.

Section 69ZD – Duty to keep records and make them available Met

This decision is based on the following – Council entered monitoring results on the Drinking Water online database for the compliance period, making these available for the annual survey in a timely fashion. Documentation and information has been readily provided on request including the emergency response to the main pipeline being damaged due to flooding. GDC are developing a WSP for the community currently in draft, which it expected will contain details to maintain records e.g. chlorine monitoring.

Section 69ZE – Duty to investigate complaints Met

This decision is based on the following – Council maintains a complaint management system. All complaints received are recorded in the Councils Customer Request Management System (CRM) and allocated to the appropriate staff member, an initial assessment is completed on all CRM’s allowing the response to be prioritised, with public health complaints considered to be high priority. A register of complaints received for this compliance period was provided to the DWA during the annual survey. No complaints had been received for the Otama water supply.

The results in this report relate only to the compliance of the Otama treatment plant and distribution zone.

Small Network Supply (serving a population of 101 to 500 people) Under the Health Act 1956, the Otama Water Supply falls into the category of a small drinking water supply. Therefore, the legal requirement to take all practicable steps to comply with the Drinking Water Standards 2005 (Revised 2008) applied from 1st July 2015.

Information in this report may be provided to the Ministry of Health at their request. With the exception of the Ministry of Health, this report shall not be reproduced without the approval of the South Island Drinking-water Assessment Unit and Gore District Council.

Completed: 30th November 2018

Rosemarie Nelson IANZ Accredited Drinking Water Assessor South Island Drinking-water Assessment Unit, Dunedin

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Assessment Report Information

Report identifier Otama_DWSNZ200508Compliance_301018_v1

Drinking-water Assessment Unit (Inspection Body)

South Island Drinking Water Assessment Unit Public Health South Wakari Hospital, Main Block, Level 2, Taieri Road, Dunedin 9010 Private Bag 1921, Dunedin 9054 Phone Number: (03) 476-9800

Drinking-water Assessor Rosemarie Nelson

Assessment Date 21/09/18

Description of assessment work

Assessment of Compliance with Drinking-water Standards for New Zealand 2005 (Revised 2008) for: Otama (OTA004) - Source: Pyramid Well (G00314), Treatment Plant: Pyramid Pump Station (TP00480), Distribution Zone: Otama (OTA004OT)

Equipment Used Drinking Water Online (DWO) was used to review compliance data

Water Supply Owner / Person Responsible

Matt Bayliss Gore District Council

Assessment method Standard assessment as per Scope 1A Procedure Drinking-water Standards for New Zealand 2005 (Revised 2008) Health Act 1956

Documents and Information

Drinking-water Standards for New Zealand 2005 (Revised 2008) Part 2A Health Act 1956 Email correspondence and data provided between Gore District Council and DWA during the annual survey South Island Drinking Water Assessment Unit file on Otama Drinking Water Supply – documentation on emergency response to main pipeline Otama Rural Water Scheme Committee - Water main reinstatement cost and improvement options 11 May 2018 The Ensign Newspaper Plumbosolvency Notices – 6 Sept. 2017 & 23 March 2018 Email 02/08/18 - Complaints Register for Annual Survey

Site of Assessment Public Health South, Dunedin

Omissions from proposed assessment

Nil

Sub-contracted work Nil

Document checked by: Susan Moore IANZ Accredited Drinking Water Assessor 1st October 2018

Release of report authorised by:

Rosemarie Nelson IANZ Accredited Drinking Water Assessor

30th October 2018

If you do not agree with the findings of this report a written appeal must be lodged with the Technical Manager South Island Drinking Water Assessment Unit, PO Box 1475, Christchurch 8140, within 2 months of receipt of this report. The Technical Manager will arrange for a review to be undertaken using the Ministry of Health appeals procedure.

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4. REPORT ON THE GORE DISTRICT COUNCIL’S COMPLIANCE WITH RESOURCE CONSENT CONDITIONS FOR THE 2017/2018 REPORTING PERIOD (Matthew Bayliss)

(Report from 3 Waters Asset Manager - 05.11.18) Introduction

The Council holds 19 resource consents associated with sewage treatment systems, stormwater networks and water abstraction. (Note: this excludes any short term resource consents held for construction activities). Following submission of the required compliance information, the attached report has been received from Environment Southland (ES) regarding the Council’s consent compliance for the 2017/2018 reporting period. The attached report will be included in Environment Southland’s annual compliance report, which is due for public release in late November. Compliance A summary of the Council’s compliance is as follows:

Sewage treatment systems • Gore wastewater treatment system – there are ongoing minor consent

compliance issues with the discharge. These are expected to be significantly reduced following the completion and commissioning of the final upgrade works as part of the “Industrial Hub project.” While this is expected to be sufficient in the short term, further upgrades are being considered and are likely to be required as part of the Council’s consent renewal process that is currently underway. Recent ecological studies have indicated that the discharge is having a minor impact on the river near the discharge point. Council staff are currently developing a plan to understand any potential impacts.

• Mataura wastewater treatment system - there were no consent compliance issues recorded with samples taken from the discharge. However, unfortunately insufficient samples were taken during the reporting period which resulted from the resignation of the staff compliance officer and a resulting misunderstanding of consent requirements as part of the handover process. Written standard operation procedures have since been developed to prevent a reoccurrence of this issue.

• Waikaka wastewater treatment system - all discharge samples were in accordance

with the consent conditions. There was however an issue with the flow meter that was installed approximately 18 months ago. This was calibrated in October 2017 which has rectified the issue.

Stormwater networks • Three complaints were received during the 2017/18 period, relating to oil

discharges from the Gore stormwater network. As a result of this an oil absorbent boom has been installed in the problem area and is being regularly monitored. A public education plan is also being considered to raise awareness of this issue.

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• Routine stormwater sampling was completed on three occasions across the four stormwater networks (two dry weather samples and one wet weather sample). Additional sampling was also completed on three occasions in response to E. coli exceedances. Due to unfavourable climatic, an extension to complete the final wet weather sample was required. This has now been completed with the annual report being prepared for submission to ES. ES completed audit sampling in April 2018 and no issues were raised.

Water abstraction • No compliance issues were noted for the 2017/2018 reporting period.


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Gore District Council

Sewage treatment systems

The Gore District Council (GDC) holds five resource consents relating to their sewage treatment facilities. The compliance performance during 2017/18 was assessed against the current resource consents.

What do we look at?

As part of the consent requirements for the Gore District Council, the quantity of water being discharged and the quality of the wastewater and receiving waters are assessed.

Complaints and self-reported incidents

Four complaints were received during the 2017/18 period, relating to the sewage treatment systems. Three concerns were raised with the Gore oxidation ponds and associated discharges; these were investigated and no breach of resource consent or plan rules was identified on any occasion. A sewage discharge was self-reported as a result of an accident at the Ajax pump station; this was responded to by GDC and was not attended by ES. Consent performance summary

Gore The BOD5, TSS and E. coli limits and rolling percentiles for the pond discharge were exceeded on several occasions during the 2017/18 period. The correct procedure was followed in response and no impact on the receiving waters was identified. One routine sample was not collected during the period. Macroinvertebrate and periphyton monitoring was completed as per the consent conditions. Concerns were raised with the macroinvertebrate community health downstream of the discharge; this is being followed up with GDC.

15/16 16/17 17/18

Consents The five resource consents relating to sewage treatment included: • discharge of treated wastewater from the Mataura township • discharge of treated wastewater from the Gore township • discharge of treated wastewater at Waikaka • discharge of contaminants to air from the Gore wastewater treatment system • construct a wastewater reactor clarifier and waste activated sludge tank

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Stormwater Networks

The Gore District Council holds three resource consents to discharge stormwater. These consents cover the Gore, Mataura and Pukerau/Waikaka townships. An additional consent is held for the dewatering of a construction area in Gore.


Three complaints were received during the 2017/18 period, relating to oil discharges from the Gore stormwater network. These were not confirmed by ES and were referred to GDC for investigation. Consent performance summary

During the 2017/18 period, routine stormwater sampling was completed on three occasions across the four stormwater networks (two dry weather samples and one wet weather sample). Additional sampling was also completed on three occasions in response to E. coli

Mataura All sample results were compliant for the 2017/18 period, however, discharge and receiving water sampling was not completed at the required frequency. Several samples were missed due to a miscommunication between GDC staff members. Macroinvertebrate and periphyton monitoring was completed as per the consent conditions and no issues were raised.

15/16 16/17 17/18

Waikaka All discharge and receiving water monitoring was compliant for the 2017/18 period. However, discharge flow rates were non-compliant on several occasions during the reported period. This investigation is ongoing.

15/16 16/17 17/18

Consents As follows, the Gore District Council holds four stormwater resource consents: • discharge of stormwater to water for Gore Township • discharge of stormwater to water for Mataura Township • discharge of stormwater to water for Pukerau and Waikaka Townships • discharge of water from dewatering of a construction area in Gore Township

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exceedances. At the time of writing this report, the final wet weather sample had not yet been taken due to unfavourable climatic conditions. An extension was granted by ES and this was to be completed at the next suitable opportunity. Audit sampling was completed by ES in April 2018 and no issues were raised.

Water abstraction

The Gore District Council holds 11 resource consents to abstract groundwater and surface water for industrial and community water supply. This includes emergency takes to supplement urban supply.


There were no complaints or self-reported incidents relating to the GDC water take consents for the 2017/18 period.

Consent performance summary

All water abstraction limits were adhered to during the 2017/18 period. Conservation measures were implemented when required and supplementary water takes were exercised at Jacobstown, Coopers Well and Waikana stream this year.

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5. BULK WATER ABSTRACTIONS – FEES AND CHARGES REVIEW (Matthew Bayliss)

(Report from 3 Waters Asset Manager - 05.11.18)

Background On 18 September 2018, the Council resolved that a designated water tanker fill location be installed at the intersection of River and Bury Street in Gore at an estimated cost of $35,000. Given this investment it is timely to review the current charging regime for bulk water abstractions. Current charging arrangement Water carriers are currently charged the following fees in accordance with the Council’s fees and charges:

• Water carrier application fee - $120.00 • Water carrier annual administration fee - $60.00 • Water tank filling (per load) - $40.00 + 0.90 per m3 • Note the $0.90 is based on the general rate for extra-ordinary water users.

Comparison to other Councils A comparison of other councils’ charging regimes is as follows:

Discussion The following is noted when comparing the Gore District Council’s fees and charges to that of other Councils: • There is variation in charging arrangement between Councils. While some Councils

charge application and administration fees in addition to a per cubic meter charge others rely purely on a per cubic metre charge.

• Where an application or annual administration fees is not charged, the per cubic metre rate is generally higher.

• Only Central Otago District Council used a “per load + per cubic metre” charge similar to what the GDC currently has in place. With regard to this it is noted that the majority of the additional cost incurred by the Council for this service is associated with the administrative requirements and is unaffected by the volume of water consumed. Due to this it is recommended that the Council retains the “per load + per cubic metre” charging arrangement.

• The Gore District Council’s current fees and charges are approximately in line with other Councils.

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Given the Council’s resolution to install specialist infrastructure for this activity it might be tempting to consider increasing the charges. However, given it is not practical to lock or isolate all fire hydrants in the Council’s water supply network, if the Council were to increase the fees, this could potentially lead to increased “water theft” from within the network. The most significant benefits of the designated infrastructure being installed is the backflow protection it provides and reduced public health risk associated with the activity. It is therefore prudent to ensure the fees are set at an appropriate level, encouraging maximum usage of the infrastructure. It should be noted that for the period between 1 March and 30 September 2018, revenue of $18,274.06 (including GST) has been generated from this activity as a result of the ongoing UFB installation work. It is anticipated that this increased level of water abstraction and resulting revenue will continue until the UFB installation for Gore and Mataura is completed in June 2020. Conclusion When considering other Council’s fees and charges for bulk water and the current revenue being generated, it is believed that the existing fees and charges are fair and reasonable. RECOMMENDATION THAT the report be received, AND THAT there be no change to the existing fees and charges for bulk water abstractions.

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6. REPORT FROM TRANSPORT MANAGER (Peter Standring) An operational report from the Transport Manager is attached.


50

As expected

Somewhat concerned

Unexpected/ Of significant concern

Status Network Activity Comments

Maintenance Contract

Contract performance: The latest reports are attached. We assess the contract monthly for health and safety, value for money, CRM, achievement, and the culture of the collaborative contract function. Governance meetings: Ramesh Sharma (General Manager- Infrastructure) and Andy Clark (Fulton Hogan Regional Manager) meet with the delivery team every three months, next meeting due late November. Innovation:

- The use of Roadroid to assess unsealed road condition. - Lime stabilising of steep sections of the unsealed network. - RAMM Patrol - the use of technology to capture routine work. - Taking on more specialist activities (road marking). - Team technical sessions. - The cross-over of the rural and urban teams. - Armourseal – trialing a membraine seal to prevent pavement deterioration. - Frost indicator trials.- Crawford Rd. - Purpose built maintenance truck. - FH will be introducing a new tool that tracks resources and live CRMs on the network. - New grader. - Offal pit- established for the disposal of animal carcass.

Work recently completed: • Seal repairs. • Pothole run. • Drainage maintenance.

The main focus next month will be on the following activities:

• Water cutting – cleaning up excess bitumen • Drainage maintenance schedule. • Limestone spreading. • Signage inspections. • Flanking work on metal roads

Monthly monitoring of unsealed roads.

Metal road inspection

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2


Roadroid results

• 599 km were driven with Roadroid, which reads the roughness of the ride. • 85 % good condition. • 10.0 % satisfactory condition. • 2.8 % unsatisfactory condition. • 2.0 % poor condition.

Roading Budget Graphs

Overall roading budget

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3


Customer Service Requests

• The chart below displays the number of customer requests we received each month and is broken down to the purpose of the call. • The chart shows an increase in calls from this time last year, mainly in unsealed roads and footpaths.

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4


Network Audit • A monthly drive-over of the whole network is carried out to determine the total number of faults. • The existing level of routine maintenance is maintaining a constant level of monthly defects. • The defect count does help us focus our maintenance activities.

Metalling Programme

The programme of metalling for this year has been substantially completed. The focus was in the Waikaka and Croydon Bush areas and 7404.98m3 of the 8051m3 planned has been spread to date. The volumes and roads are detailed below:

• Roads metalled:

Map of Zones

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5


• 2.1km of lime stabilisation is yet to be carried out on Campion Road, Landslip Valley Road, Middle Road West and Mountain Road.

Grading • 175 km of grading was accomplished during October 18. We are maintaining our cyclic approach to this activity visiting each site every eight to ten weeks on average.

Regulatory items

• There is a lot of activity on the network with an increase in the number of TMPs and CAR requests.

.Month Corridor Access Requests (CARs)

Traffic Management Plans (TMPs)

High Productivity Motor Vehicle Permits (HPMVs)

Land Use Consents

Dust Suppression Permits

November 19 19 113 5 4

December 18 18 36 4 0

January 38 39 128 0 4

February 23 24 119 0 0

March 21 22 123 1 0

April 63 63 77 2 0

May 51 52 77 2 0

June 24 24 81 1 0

July 14 17 148 0 0 August 37 38 208 0 0

September 31 32 97 0 4

October 59 62 124 0 7

Vegetation Control Contract (Southern Vegetation Control)

• A three-year contract to carry out: - Township spraying of the streets is completed. - Pest plants spraying began at the beginning of November to avoid Bees being poisoned on flowering Broom and Gorse. - Some urban lichen spraying has been completed. Lichen spraying completed in 3 cemeteries, Mataura, Gore and Charlton Park. - Metalled road spraying (culverts, marker posts, signs etc.) is starting this month. - No Spray Register has been updated.

Resurfacing Contract 2018/07 (Format 2+1+1+1)

The contract included resurfacing and seal repairs work of approximately 20km of the road network.

• Only one bid was received (Fulton Hogan). • The tender was awarded to Fulton Hogan for $1,473,000 for the first year.

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6


• Pre-seal repairs to begin in December

Concrete Repair Contract 2018/09 (Format –1+1+1)

Replacing lengths of the footpath, reforming some vehicle crossings and replacing broken channels. • Tender closed 10 October 2018. • Three tenders were received; McDonough, SouthRoads, Supreme Site works. • The tender was awarded to McDonough for $301,806+ GST for the first year. • The footpath renewal budget allows for potentially another $268,000 of work in the 2018/19 season.

Network Road Marking Contract 2018/10 (Format –1+1+1)

A full remark of the rural networks and isolated markings in the urban.

• Tender closed 27 September 2018. • Three tenders were received; Fulton Hogan, Roadmarkers NZ, Spraymarks. • The tender was awarded to Roadmarkers NZ for $113,663.28 + GST for the first year.

Footpath Resurfacing Contract 2018/08 (Format –1+1+1)

The contract is for the replacement of sections of asphalt footpath.

• Tender closed 17 October 2018. • Three tenders were received; Fulton Hogan, Central Western, Supreme Siteworks. • The tender was awarded to Central Western for $96,154.00 + GST for the first year. • The footpath renewal budget allows for potentially another $270,000 of work in the 2018/19 season.

Seal Repair Contract (Format –1+1+1)

The contract is for the asphalt repair of Pavement faults.

• Tender closed 2 October 2018. • Two tenders were received; Fulton Hogan and Central Western. • The tender was awarded to Fulton Hogan for $118,908.00 + GST for the first year.

Bridge repair contract

Remediation work for three critical bridges (Kennedy Rd/Landslip Valley Rd/River Road)

• River Road bridge repair was complete in October. • Kennedy Road bridge is due for completion in December. Planning to pour the deck on Wednesday 14 November 2018. • Landslip Valley bridge is on hold.

Falconer Road

seal extension

A contract to construct a sealed carriageway along Falconer Road as well as install pipework.

• Tender closed 6 November 2018. • Four tenders were received; Fulton Hogan, Wilsons, Southroads and Wilsons keen. • The tender evaluation is progressing well, hoping to award in late November.

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7


• This work will be carried out under a combination of 3 Waters and roading budgets. • Construction is due to begin early 2019.

Pyramid Bridge

Bridge rebuild

• We are waiting on NZTA for its funding assessment. This should be carried out on 9 November. We should hear the outcome by 14 November.

LED street lights • We are still waiting for final bills to be received. • Several sites around town have received new lights. • Powernet to be engaged under an MOU to provide maintenance activities in the future.

Asset Management System (RAMM)

• The Roading Department’s focus is to ensure that we are continuing to build high-quality data; this enables us to undertake more robust planning around our future maintenance and renewal programmes that comply with NZTA funding requirements.

• Opus has given assistance this month on our lighting Database. • Staff are continuing a programme of traffic counting around the network • WDM are booked for early 2019 to carryout our skid testing of the network. • A ten year bridge works programme will be developed from the information from the audit.

Health and safety

• No reports of work accidents or injury this month. • New vehicle has had new road inspection signage. • Contractors carryout weekly tailgate meetings.

Road Safety Southland

“a safe system free of death and serious injury.” In this safety space the Gore District Council is:

• Regularly auditing the network. Monthly drive overs. • Reviewing its delineation and signage strategy. Working with Opus on this. • Working with the Southern Region Safety Team (ICC, SDC, GDC) to promote learning initiative for our public such as “Drive my Life”. • A night dive over of the network is performed twice a year the next audit to be carried out early December. • Developing a safety deficiency register to capture areas needing improvement around the network (improve sight distances, install guardrail,

better signage, roading geometry, flag lights at intersections, attending to vegetation, etc.). • Developing a new programme to promote cycle safety in the south.

Other activities on the network

• MVM – Fulton to complete work on the verge along Salford St. • Chorus – the UFB rollout continues in Gore, completion date is June 2019. • NZTA – resurfacing work has been carried out along SH1 through town further work is expected on Hokonui Drive. • Mataura - the Intersection of SH1 and SH93. An ILM meeting was held with all stakeholder on 7 November to discuss the issues around this

intersection.

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8


Network photos Kennedy Road bridge replacement

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GORE DISTRICT ROUTINE ROAD MAINTENANCE MONTHLY REPORT Sep-18Prepared By: Hamish Lindsay

September Summary

September saw a considerably larger claim completed than recent months, This was primarily due to the 5472T of

metal placed on the network. This is a seasonal task and will not continue at this rate. The other prominent event

of the month was the purchase of a new grader by K2 Kontrarting. This grader (pictured below) is now completing

maintenance grading on the network. It is pleasing to see a low number of CRMs received for the month. This has

assisted Athol and Natasha in catching up on their cyclic tasks. We have also completed the majority of the

programmed sump cleaning, positioning the network better for any future heavy rain.

Looking Ahead

There is very little programmed works to be completed for October, meaning that we anticipate a quiet month

ahead. The last of the metalling package will be completed as well as any reactive unsealed road work as the roads

startto dry out. The [ast of the programmed sump cleaning will also be completed and claimed. With the focus

changing to summer conditions we wii! !ook to align and reprioritise the cyclic works being completed to ensure

that time and effort is being spent in the most effective areas

$/UOM

•Grading S/km Gradid '—SucisrTruc!: S/l.,-n Sv.'=pt MetalliflE £/T Fl5.:e

Safety Reporting

Site Health & Safety Audits

Traffic Management AuditsSubcontractor Review/Audit

Stop Work Action

Leadership Safety Actions

23003

141441

27

•/

y•/

y•/

Lost Time Injury

Medical Treatment InjuriesFirst Aid Injuries

Environmental Incident

Service Strikes

00000

00000

yV

y/^

We have recently begun including the audit schedule in our

weekly report. This is to bring further clarity to those responsible

for completing the audits

CLAIM SUMMARY

1,400,000 i

Jul-17 Aug-17 Sep-17 Oct-17 Nov-17 Dec-17 Jan-13 Feb-18 Mar-13 Apr-13 May-IB Jun-18

Budget ...... 17/18 Claim ———ie/19C]aim . i FWP Estimate

At this stage we are still awaiting confirmation of the annual budget to track progress. To ensure monthly spend is

still conveyed we have used an indicative budget value and divided this by 12 months. Receiving this will ensure

that the targets are matched for the budgeted spend. Monthly spend will begin to ease now as the metalling

comes to an end and the cumulative spend will begin to track back towards the budgeted spend,

NETWORK CONDITIONUrban Defect Count

iec

1-C

12C

1;:!:

r- REQUEST FOR SERVICE

m

CRM Details

I I I II^-17 G^-17 Na^l? [^-17 Jcn-l! F^-IS Mcr-l; Arr-l; May-l? JieT-1; JuLl? ^-1° 5q;.lS

iSseclRGa^ aUniesedPcads 'DrflfisE EFcc^adi5 iVesetctcn l(gfE lE"£f^n;y?eqiJ£3 l;tTE£tL:j!ui? lG:te

CRM Performance

September showed good results with few CRMs received in comparison to recent months and also to the same

time as last year. Items such as the programmed cleaning of network sumps and the improved weather likely had

an impact on this.

INNOVATIONInnovation

<»Wwd<yy^ /'/ ^'

'?•" v

^ ._^ ^y ^ ^ ^ ^ ^ ^^ .^~

>1 fc' -^ ^•' s?' ^L' •?' ."?' :

c^ ^-1 ^J ^ ^x: ^ ^ ^ s^

• North 'A'escGcre

N" '<•' ''

';1 -.^ . ^"'^--- t^-'

••South'A'estGcre

The above value shows the results out of RAMM. We continue to have some

misalignment with RAM M and the Authority system which is not recording all tasks that

are completed. To resolve this going forward Fulton Hogan is to be given restricted

access to Authority so that al! parties are working on the same system, thus reducing the

TEAIVI CULTURE

• Number Implemented • NumberSuggested

|The monthly network audit results for September has continued the same consistant trend

I that we have seen ove rthe past six months

During September we had further discussion regarding the CRM process and have agreed to

work on a single platform, reducing the opportunity for errors

Kevin standing beside his new grader which started operaing in

September There was no team function in September. One is

planned for October

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