infrastructure and services committee

Infrastructure and Services Committee

Notice of Meeting A meeting of the Infrastructure and Services Committee will be held in the Council Chamber, Forum North, Whangarei on:

Wednesday

14 August 2013 9.00 am

Committee Cr G M Martin (Chairperson)

His Worship the Mayor Cr C B Christie

Cr S J Deeming Cr A J Edwards

Cr S M Glen Cr P R Halse

Cr J S Jongejans Cr B L McLachlan

Cr S L Morgan Cr K J Sutherland

Cr W L Syers Cr M R Williams

Cr J D T Williamson

INDEX Item No Page No 1. Minutes of a Meeting of the Infrastructure and Services Committee held 10 July 2013 .............................................................................................................................. 1 2. Whangarei Wastewater Improvements ..................................................................................... 3 3. Temporary Road Closures – Northland Car Club ..................................................................... 7 4. Old Town hall Car Park – Parking Charges ............................................................................ 13

Recommendations contained in this agenda are NOT final decisions. Please refer to the minutes for resolutions.

Local Government Act 2002 Amendment Act 2012 – Decision Making Full consideration has been given to the provisions of the Local Government Act 2002 Amendment Act 2012 in relation to decision making and in particular the current and future needs of communities for good quality local infrastructure, local public services and performance of regulatory functions in a way that is most cost effective for households and businesses. Consideration has also been given to social, economic and cultural interests and the need to maintain and enhance the quality of the environment in taking a sustainable development approach.

Infrastructure and Services Committee 14 August 2013

1. Minutes: Infrastructure and Services Committee Wednesday, 10 July 2013

Minutes of a meeting of the Infrastructure and Services Committee of the Whangarei District Council held in the Council Chamber Forum North on Wednesday 10 July 2013 at 9.00 am. Present: G M Martin (Chairperson) Crs S J Deeming, C B Christie, A J Edwards, S M Glen, P R Halse, J S Jongejans, B L McLachlan, S L Morgan, K J Sutherland, W L Syers, M R Williams and J D T Williamson Apology: His Worship the Mayor M C A Cutforth Moved: Cr Williams Seconded: Cr Deeming “That the apology for absence be sustained.”

CARRIED Also present: Archie Dixon (President RSA) In Attendance: Group Manager Infrastructure and Services (S Weston), Legal Counsel (K Candy), Parks and Recreation Manager (P McDonald), Civic Defence Officer (V Randall), Casual Communications Adviser (S Halliwell), Councillor Support (J Crocombe) and Senior Meeting Coordinator (C Brindle)

1. Confirmation of Minutes of a Meeting of the Infrastructure and Services Committee held on 12 June 2013

Moved: Cr Glen Seconded: Cr Morgan “That the minutes of the meeting of the Infrastructure and Services Committee held on 12 June 2013, having been circulated, be taken as read and now confirmed and adopted as a true and correct record of proceedings of that meeting.”

CARRIED 2. War Memorial Proposal

Moved: Cr Glen Seconded: Cr Halse “1. That Council supports the Rose Street Memorial relocation and enhancement project. 2. That funding of $500,000 towards the project be considered for inclusion in the Annual

Plan. 3. That Councillors G M Martin and S M Glen be appointed to work alongside the RSA on

this project.” CARRIED

3. 2013 Drought – Water Supply Review of 2013 Summer Period

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Moved: Cr McLachlan Seconded: Cr Edwards

“That the information be received.”

CARRIED 4. Whangarei District Civil Defence Management Update

Moved: Cr Williamson Seconded: Cr Deeming

“That the report Whangarei Civil Defence Emergency Management Update be received.”

CARRIED

5. Contract 08007 Traffic and Pedestrian Signal Maintenance

Extension to Contract Value Moved: Cr Edwards Seconded: Cr Syers

“That the contract value for Contract 08007 Traffic and Pedestrian Signal Maintenance, is increased to the sum of two million eight hundred and one thousand nine hundred and sixty dollars and fifty nine cents ($2,801,960.59) (excluding GST).”

CARRIED Cr Halse requested his vote against be recorded.

6. Ingenium Award – Ruakaka Wastewater Treatment Scheme

Moved: Cr Deeming Seconded: Cr Halse

“That the information be received.”

CARRIED

The meeting closed at 9.40am Confirmed this 14th day of August 2013 G M Martin (Chairperson)

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2. Whangarei Wastewater Improvements

Reporting officer Andrew Carvell (Waste and Drainage Manager)

Date of meeting 14 August 2013

Vision, mission and values

This item is in accord with Council’s vision, mission and values statement as managing wastewater in an environmentally sound manner on behalf of the community is in keeping with the Council mission of creating the ultimate living environment.

Summary This item provides an update on progress with Council’s programme of works to improve the Whangarei city sewerage system, including:

Increase in the treatment capacity of the Kioreroa Road Treatment Plant Summary of completed city wastewater projects Works planned for 2013/14.

1. Increase in WWTP Capacity In its February 2013 meeting the Infrastructure and Services Committee was presented with an update on a project to provide full treatment to all wastewater that entered the Kioreroa Road Treatment Plant. This project includes reconfiguration of the treatment plant and installation of a 75,000 cubic metre per day ultraviolet light (UV) disinfection facility.

The UV system upgrade was built under two main contracts; a civil construction contract with United Civil Construction Ltd ($1.3M) and an equipment supply contract with Filtec NZ Ltd ($1.2M). The total project budget was $3.0M.

This covered:

Reconfiguration of the treatment plant and control system so more wastewater is treated to a higher level A new UV system that can disinfect 75,000 m3/d rain diluted wastewater New outlet pipes and structures that can in future direct all treated wastewater to the wetland.

The system became operational at the end of July 2013. Because the disinfection capacity is larger than what can be pumped to the treatment plant no wastewater can now leave the plant without being disinfected. This will eliminate that largest single point source of pathogens entering the harbour during storms. Figure 1: New disinfection system being installed

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The new treatment UV facility at the plant operated during a rain event on 1 August and worked successfully. In the process an estimated two trillion (2,000,000,000,000) E. Coli bacteria were disinfected that would have previously entered directly into the harbour.

2. Completed projects

A summary of completed projects associated with reducing sewage spills within Whangarei City and the impact of wastewater on the harbour over the last five years is listed in Table 1. This excludes works within the reticulation network to renew or replace pipes which is typically covered under the operational budget.

Table 1: Completed projects associated with reducing sewage spills within Whangarei City and reducing

impact of wastewater on the harbour

Project Name Key Components Cost Storm flow UV system 2012/13

Modify treatment plant to better treat wastewater in storm situation and build a new UV system to treat all wastewater that gets to plant

$3.0M

Hatea storage tank and treatment system 2011 / 2012

Eliminate untreated sewage spills from the Hatea pump station to the Hatea River, which use to spill up to 10 times per year. No discharge since commissioned. NRC resource consent granted for 35 years

$5.0M

Telemetry System Upgrade 2011 to 2013

Purchase and install new radio repeaters. Put alarms and radios at pump stations so potential overflow situations can be responded to quickly. District wide benefits.

$0.9M

Okara Park Pump Station upgrade 2010 / 2011

Eliminate sewage spills from Okara Park pump station with installation of new pipeline and pump upgrade. New consent granted for discharge in emergency situations only

$4.5M

Treatment Plant Improvement Programme 2008 to 2013

New inlet works installed to screen gross solids in normal flow and in storm flow conditions. Renewal and upgrade of treatment processes to improve safety, reliability and performance. Critical spares purchased. Microfiltration unit installed to polish effluent and improve final effluent quality Existing UV system capacity increased from 30,000 to 50,000 m3/d.

$7M

Pump Station Upgrade programme 2008 to 2013

Renewal and upgrade of pump stations to improve safety, reliability and performance.

$1M

Health Risk Modelling 2010 - 2013

Assessment of impact of sewage spills and modelling of solutions $50k

Sewer Network Modelling 2010 - 2013

Creation, calibration and analysis of sewer network model to help assess benefit of improvement works and performance of wastewater system in the future.

$400k

Household gully inspection programme 2010 - 2013

Approximately 3,500 properties inspected.

Downpipes removed from sewer system and gully traps repaired

$30 to $40k per year

Total ( 2008 – 2013) $22M

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3. 2013 / 14 Projects

The following projects were identified in the February Agenda Item for the 2013/2014 financial year. A status report is also provided.

Kamo Road Sewer Upgrade This project includes the replacement of approximately 1,300 metres of sewer pipe underneath Kamo Road north and south of the Kensington road intersection. This section of pipe is in very poor condition and constricts flow from the North of the city as it is too small to convey all the wastewater in wet weather. The project includes replacing the existing 150mm earthenware pipe with 300 mm polyethylene pipe or relaying 150 mm pipe together with putting a line down Lupton Avenue is also being considered. A feasibility study has been completed, which has recommended further Geotech investigation be undertaken to determine if underground pipe installation methods are an option to minimise traffic disruptions and reduce cost. This work is currently underway. The estimated cost for the project is between $1.8M to $2.6M depending on the installation process. The main risk to installation is the depth of the sewer, number of direct connections to it and type of geology. The presence of volcanic soils, and associated rock, may mean directional drilling is not an option. The wastewater team is working closely with the Roading Department to co-ordinate a number of projects in the area to minimise traffic disruptions. Staff will report to Council on the final sewer design and works programme when investigations are complete.

Wetland Renovation

Further work has been done on the methodology to desludge Wetland 1 including developing the option of storing the excavated wetland material within the wetland footprint. This proposal would utilise the poles removed from the Tutukaka Marina to construct a sludge storage cell, offering a saving to Council in the order of $30,000. The ponds have not been cleaned since they were installed in the 1980’s and they are currently full of plant material and sludge. Contracts have been drafted for this work and it is proposed that this tender be issued early in this financial year. A pipe route has been developed and designed to carry additional wastewater from the treatment plant to the wetland. Once the 900mm pipe is installed it will mean that there is no further direct discharge of wastewater to the marine environment. A change to consent will be needed to discharge water through this pipe. It is proposed that the pipe line construction and consent application be lodged at the start of this financial year. Council is also looking to renovate the wetland system after it has been desludged. The current proposal is that the existing wetland system, known as a submerged system, will be replaced with a floating wetland system. A surface wetland system will improve effluent quality. The overall estimated cost for the pipeline, desludging and plant restoration work is $1.7M. The work is planned to occur during this summer.

Aeration Basin Upgrade

The wastewater treatment process includes aeration basins that help remove carbon and ammonia from the wastewater. While the plant has two basins, only one is currently being utilised. To help improve the operation of the treatment plant, particularly its ability to operate in high flows, it is proposed that the stand-by basin be brought on-line and operated in parallel with the existing basin. Other benefits are likely to include improved effluent quality and a more robust treatment process. The works required to do this include purchase and installation of new aerators and/or mixers. The cost estimate for this work though it is $300k.

Infiltration and Inflow Mitigation (Denby Crescent)

This project is to address major leakage in the Denby Crescent sewer system that causes flooding of residential properties. A detailed programme for this work is currently being developed.

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Hatea Treatment Facility Upgrade

Stage 2 of the Hatea sewerage tank work is to increase flows to it by closing off the sewer line under Kiripaka Road and diverting these to the Hatea tank during extreme weather for treatment. This frees up capacity in the downstream sewer line, greatly reducing the likelihood of untreated overflows from the network. While the Hatea tank was constructed with this in mind, additional equipment and modification of the existing rising main is required. The estimated cost for this work is $900k. It is proposed that additional disinfection units be procured in August 2013. The consent for this facility has been obtained.

Sewer Renewal Council staff undertake renewals of sewer lines where they have failed, such us in Erin Street and Anzac Parade which were completed in 2012/13, or where other projects mean renewals can be done cost effectively, particularly during road works, such as the SH1 realignment. The estimated budget for renewals in 2013/14 is $200k. In June 2013 an insitu PVC lining process was trialled to see if it could offer cost effective solution to Council for rehabilitating pipes. To date the results look promising with work completed on the western Hills Bypass and Erin Street.

Quality Management of Wastewater Activity The Waste and Drainage department has recently completed a surveillance audit for its ISO 9000:2001 accreditation with an excellent outcome.

4. Conclusion

The new storm flow UV system is operational and the single largest source of pathogens into the harbour is now being treated. Council continues to progress projects that reduce the impacts of wastewater spills during wet weather and improve the level of service provided by the City’s wastewater infrastructure. Council has invested significant funding into the Whangarei City Waste Water network during the past six years and significant improvements in the service have been realised. Also worthy of note is the improvement in satisfaction from Council’s Residents Satisfaction Survey that shows an improvement in satisfaction from 45% to 62%.

Recommendation That the report be received.

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3. Temporary Road Closures - Northland Car Club

Reporting officer Jenny Calder (Property Officer)



This item is in accord with Council’s vision, mission and values statement as the event promotes positive vibrancy in our district and encourages participation in local events.

Northland Car Club – Application for Temporary Road Closures Northland Car Club requests the roads, as detailed in the recommendation, be temporarily closed from 9:00am to 5:00pm on the dates indicated.

Emergency services and Roading Staff have been advised and have no objections. Residents are consulted as standard practice by the Club, prior to each event being held.

The Northland Car Club personnel are experienced at running these events, and have an excellent safety record.

Residents are able to access the closed roads between runs, under instruction from the Northland Car Club, with expected delays of no more than twenty minutes

Recommendation 1. That pursuant to the Tenth Schedule of the Local Government Act 1974 the following roads be closed

to vehicular and pedestrian traffic from 9:30am to 5:00pm on the dates indicated: 15 September 2013 Casey Road, Marsden Point. From the intersection of Casey Road and Theodore Road to the intersection of Casey Road and Waiwarawara Road. 13 October 2013 Doctors Hill Road, Waipu. From a point 0.8 km from the intersection of Doctors Hill Road and SH1 to the intersection of Doctors Hill Road and Mountfield Road. 10 November 2013 Crows Nest Road, Hukerenui. From a point 1.2 km from the intersection of Crows Nest Road and SH1 to intersection of Crows Nest Road and Paiaka Road. 1 December 2013 Morgans Road, Titoki. From the intersection of Morgans Road and Houto Road to a point 1.4 km down Morgans Road. 16 February 2014 Hillford Road, Waiotira. From the intersection of Hillford Road and Waiotira Road to the end of Hillford Road. 16 March 2014 Mangapai Caves Road. From the intersection of Mangapai Caves Road and McDonnell Road to the intersection of Mangapai Caves Road and Rountree Road.

2. That side roads, off the roads to be closed, also be temporarily closed for a distance of up to 100 metres from the intersections for safety purposes.

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3. That the Chair of the Infrastructure and Services Committee and the Infrastructure and Services Group Manager be delegated to consider objections and cancel or amend any or all of the temporary road closures, if appropriate.

Attachment

Northland Car Club - Application for Temporary Road Closures 2013-2014 season

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4. Old Town Hall Car Park - Parking Charges

Reporting officer Greg Monteith (Senior Roading Engineer)



This item is in accord with the Council’s Mission, Vision, and Values statement as it supports sustainable land use management and transportation, providing a quality environment and protecting those assets that contribute to community health and well being.

Introduction

In September 2011 Council adopted the Parking Management Strategy. The strategy set out that Council would seek to manage the parking and occupancy rates through fees. If the occupancy rates of a parking area were greater than 90% Council would increase the fees to reduce the occupancy rates to achieve between 70 and 80% occupancy, ensuring a car park would be available when required by the customers.

We have recently received a number of complaints (medical centre staff and customers, citizen advise bureau and some general public users) regarding the occupancy rates of the old town hall car park.

Environmental Northland (ENL) have undertaken a survey and confirmed the occupancy rates of this car park in the morning period are 100% and over 90% in the afternoon period.

Discussion

Discussions with some of the surrounding businesses resulted in requests for time restrictions as apposed to increasing in fees only. In line with Council’s Parking policy it is believed the increase in parking fee alone should be sufficient to bring down the occupancy rate.

To achieve the 70 to 80% occupancy rate it is proposed to increase the parking fees from 60 cents per hour to $1.00 per hour. Bringing the old Town Hall car park in line with charges at Forum North / Water Street and Laurie Hall carparks.

Recommendation

That Council increase the parking fee of the old Town Hall car park from 60 cents per hour to $1.00 per hour.

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infrastructure and services committee

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