agenda of utilities committee - 21 july 2016

Utilities Committee | 21 July 2016 1

AGENDA

UTILITIES COMMITTEE TO BE HELD IN THE COUNCIL CHAMBERS ON

THURSDAY, 21 JULY 2016 AT 1:00 PM

1 Apologies

2 Confirmation of Minutes

3 Business Arising

4 Declarations of Interest

5 Items of Business

CL01 p23 Water Usage, Sales & Quality

CL02 p30 Construction of Waste Transfer Station Tender 4-14/15 - Final Report

CL03 p33 Griffith City Council Water Supply Allocation - Temporary Trade - Internal Policy

CL04 p37 Council Water Supply - Potable Water Main Pressure Information

6 p63 Outstanding Action Report

7 General Business

8 Next Meeting

DISTRIBUTION LIST

Councillor Dino Zappacosta (Chair), Councillor Mike Neville, Councillor Paul Rossetto, Patricia Cox (Councillor - Alternate), Matthew Curley (Community Rep), Christopher Green (Community Rep), Patrick Pittavino (Community Rep), Russell Rowley (Stakeholder), Virginia Tropeano (Stakeholder)

Director Utilities, Graham Gordon; Waste Operations Manager, John Roser; Environmental, Health & Sustainability Coordinator, Fiona de Wit; Minute Secretary, Kathleen Calabria.

Quorum = 5

If you are unable to attend this meeting please notify the Minute Secretary prior to commencement of the meeting by email or by telephoning Council on 69628100.


MINUTES

UTILITIES COMMITTEE HELD IN COUNCIL CHAMBERS ON

THURSDAY, 21 APRIL 2016 COMMENCING AT 1:00 PM

PRESENT

Councillor Dino Zappacosta (Chair), Councillor Mike Neville, Patricia Cox (Councillor - Alternate), Matthew Curley (Community Rep), Russell Rowley (Stakeholder) Quorum = 5

STAFF

Director Utilities, Graham Gordon and Minute Secretary, Kathleen Calabria

1 APOLOGIES

RECOMMENDED on the motion of Councillor Mike Neville and Councillor Pat Cox that apologies be received from Virginia Tropeano, Chris Green, Councillor Paul Rossetto, Fiona De Wit and John Roser.

2 CONFIRMATION OF MINUTES

RECOMMENDED on the motion of Matt Curley and Russell Rowley that minutes of the previous meeting held on 7 December 2015, having first been circulated amongst all members, be confirmed.

3 BUSINESS ARISING

Nil

4 DECLARATIONS OF INTEREST

Pecuniary Interests

There were no pecuniary interests declared.

Significant Non-Pecuniary Interests

There were no significant non-pecuniary interests declared.

Less Than Significant Non-Pecuniary Interests

There were no significant non-pecuniary interests declared

Minutes of Utilities Committee 21 April 2016


5 ITEMS OF BUSINESS

CL01 WATER USAGE, SALES & QUALITY

The Committee note the information in the report. Mr Gordon updated the Committee on water usage and advised that Council is travelling well. Graham advised the figures in the Report Section A Water Usage for 2015/16 should read 5,419ML as the original figure included June 2015. Councillor Zappacosta requested a copy of the report titled “Use of Additional Town Water Allocation for Watering of Gardens” that went to the Business Development and Major Projects Committee on 18 November 2015 in regard to a water rebate for corner blocks. RECOMMENDED on the motion of Councillor Mike Neville and Councillor Pat Cox that the Policy regarding water rebate for corner blocks be re-introduced. SMT COMMENT: The existing Water - Supply and Charges Policy (WS-CP-202) makes reference to the provision of a rebate system (Section 2) (c) (iii) dependant on the Council's currently adopted Revenue Policy. The current 2015/16 Revenue Policy does not make provision for the rebate program. Should this Recommendation be adopted it will be considered as a submission to the Draft 2016/17 Operational Plan (Budget) currently on exhibition for the further consideration of Council. Below is a copy of the report Mr Gordon sent to the Business Development and Major Projects Committee on the 16 November 2015.



Extract - Water – Supply and Charges - Policy No. WS-CP-202

Policy Objective

To establish guidelines for the supply and charges for the use of Council's water supply.

Policy Statement

2) WATER SUPPLY CHARGES

c) Consumption Charges

i) All supplies are metered and a consumption charge will be applied to all land supplied with potable and raw water for actual use of the water supply service in accordance with Section 502 of the Local Government Act, 1993. The consumption charge is based on a per kilolitre (kl) fee and will be charged at the amount adopted in the Council’s adopted revenue policy subject to the following:-

ii) The annual access fee entitles potable water users to the first 200 kl of water charged in accordance with the revenue policy.

iii) A rebate for an additional 100 kl of free water may be provided to water users for publicly accessible nature strips or reserves provided that:-

An application form is received; The property is categorised as residential;

The nature strip/reserve adjoining the property is greater than 200m2; The applicant uses in excess of 600 kl of water per annum; The nature strip/reserve is maintained in an acceptable manner (as

determined by Council); and The granting of the rebate is reviewed annually.

Directorate Utilities

TRIM Ref 14/60615

Status Current

Adopted 27 January 2015 Minute No: 15/005



2015/16 WATER CHARGES Potable Water

Two part tariff comprising Access Fee based on Meter Size (see below)

plus Consumption charge of step 1 (0-200 kL) & step 2 (> 200 kL)

Consumption Charge

2014/15 Charge / kL ($)

2015/16 Charge / kL ($)

% Variation

0-200 kL 0.65 0.67 3.1%

> 200 kL 1.25 1.30 4.0%

Meter Size 2014/15 Access Fee ($)

2015/16 Access Fee ($)

% Variation

20 mm 129 129 0.0%

25 mm 201 201 0.0%

32 mm 330 330 0.0%

40 mm 516 516 0.0%

50 mm 807 807 0.0%

80 mm 2064 2064 0.0%

100 mm 3225 3225 0.0%

150 mm 7257 7257 0.0%

200 mm 7257 7257 0.0%

Strata Neighbourhood 261 261 0.0%

Unmetered Property 129 129 0.0%

Yenda Dual 201 201 0.0%

CBD (C1) 441 441 0.0%

CBD (C2) 825 825 0.0%

CBD (C3) 2700 2700 0.0%

Raw Water

Two part tariff comprising Access Fee based on Meter Size (see above) plus Consumption charge (from zero usage)

Consumption Charge

2014/15 Charge / kL ($)

2015/16 Charge / kL ($)

% Variation

0.33 0.34 3.0%

Standpipe

Charges for the taking of water from designated standpipes at Griffith (Oakes Rd) and

Yenda (Mirrool Ave) are: Standpipe (metered) potable – per kilolitre $2.00 Standpipe (metered) non potable – per kilolitre $0.70

Nature Strips

The rebate for an additional 100kL of free water for publicly accessible nature strips or reserves will not be available for the 2015/16 financial year.

CL02 GRIFFITH CITY COUNCIL WATER SUPPLY ALLOCATION - TEMPORARY



TRADE

The Committee note the information in the report.

Graham Gordon advised that all of the 5,000ML has now been traded. Graham Gordon to complete a report to the Committee for next year’s Water Trading. RECOMMENDED on the motion of Councillor Mike Neville and Russell Rowley that a report be presented at the next Utilities Meeting regarding future trading of water allocation for the 16/17 financial year. CL03 SENATE INQUIRY INTO MURRAY DARLING BASIN AUTHORITY – RECOMMENDATIONS

(Please click on the link below to view further information.)

http://businesspapers.griffith.nsw.gov.au/Open/2016/04/UC_21042016_AGN_675_AT.PDF

That the information be received.

RECOMMENDED on the motion of Councillor Mike Neville and Mathew Curley that the report be noted. CL04 A SCHEME TO DIVERT TRIBUTARIES OF THE CLARENCE RIVER TO THE MURRAY-DARLING BASIN




RECOMMENDED on the motion of Councillor Mike Neville and Russell Rowley that the report be noted CL05 MINUTES OF THE BUILD MORE DAMS ACTION GROUP MEETING - 18 MARCH 2016




RECOMMENDED on the motion of Councillor Mike Neville and Matthew Curly that the minutes of the previous meeting held on 18 March 2016, having first been circulated amongst all members, be confirmed. CL06 ACTION REPORT - UTILITIES COMMITTEE - 21 APRIL 2016


6 GENERAL BUSINESS

6.1 ‘Tip for Free’ Weekend






Graham Gordon advised the ‘Tip for Free’ weekend was held on the 19 – 20 March 2016 with the following results;

Tharbogang Waste Management Centre

Saturday 470

Sunday 607

This is an increase of 117 from the last ‘Tip for Free’ weekend held in September 2015.

Yenda Waste Management Centre

Sunday 304 (a full day)

This is an increase of 94 from the last ‘Tip for Free’ weekend held in September 2015.

Elderly and Infirmed service

A total of 11 people contacted Council, six were verified to be genuine and these have been collected by staff in their normal hours.

6.2 Waste Transfer Station

Graham Gordon advised that the Waste Transfer Station is completed with the official opening to be confirmed (confirmation from EPA of who will open the station) in mid May 2016.

Russell Rowley asked the question – “What is Council going to do with the products that get separated.

Graham Gordon advised he will complete a report and bring it to the next Utilities meeting in July 2016.

6.3 Griffith Centenary 1916 - 2016

Councillor Pat Cox asked the question – “Can the ‘Tip for Free’ weekend be brought forward to coincide with the 100 year Centenary of Griffith on the weekend of 23 – 24 July 2016.

RECOMMENDED on the motion of Councillor Pat Cox & Russell Rowley that the ‘Tip for Free’ Weekend be on the weekend of 23 – 24 July 2016.

6.4 Garbage Bins – Jondaryan Avenue Griffith

Councillor Zappacosta advised that the steel bins in Jondaryan Avenue are in poor condition and asked if they will be replaced. Councillor Zappacosta also advised that some of the bins in the villages are also in poor condition and asked if these bins will be updated like the CBD street bins?

Graham Gordon advised that the CDB has its’ own street bins Policy and this does not extend beyond the CBD. Graham advised he will look at the Bin Replacement Policy and advise the Committee at the next meeting.

7 NEXT MEETING

The next meeting of the Utilities Committee is to be held on Thursday, 21 July 2016 at 1:00 pm

There being no further business the meeting terminated at 2:20 pm.



Confirmed: ..........................................

CHAIRPERSON


Griffith City Council COMMITTEE REPORT CLAUSE CL01 TITLE Water Usage, Sales & Quality FROM Graham Gordon, Director Utilities TRIM REF 16/43715

SUMMARY

The report is to update the Committee on 2015/16 water usage to date; compare it with previous years and advise on recent water quality testing results.

RECOMMENDATION

The Committee note the information in the report.

REPORT

A) Water Usage

Total Potable Water Production Graph Attachment (a) shows a comparison to the end of June 2016 versus 3 previous years’ water production.

Below is a comparison of the last 4 years Potable Water Production from the 1 July to the end of June:

July – June

2012/13 6,442 ML

2013/14 6,368 ML

2014/15 6,473 ML

2015/16 6,653 ML

Total Griffith and Yenda Raw Water usage from the 1 July 2015 to the end of June 2016 is:

July – June Usage

2015/16 7,191 ML

Attachment (b) shows a raw water graph depicting cumulative usage to the end of June 2016 for three Griffith City Council Raw Water Pump Stations supplying the Griffith Raw Water Reticulation Network.

Attachment (c) shows a raw water graph depicting cumulative usage to the end of June 2016 for Yenda Raw Water.

CL01 Water Usage, Sales & Quality


B) Water Quality

The attached table (d) shows Department of Health test data from Griffith potable water for the period of June 2016.

LINK TO STRATEGIC PLAN

This report has no relevance to the Council’s Strategic Plan.

ATTACHMENTS

(a) Total Potable Water Usage Graph ⇩ 25

(b) Griffith Raw Water Usage Graph ⇩ 26

(c) Yenda Raw Water Usage Graph ⇩ 27

(d) Water Quality Table ⇩ 28

CL01 Attachment (a) Total Potable Water Usage Graph


CL01 Attachment (b) Griffith Raw Water Usage Graph


CL01 Attachment (c) Yenda Raw Water Usage Graph


CL01 Attachment (d) Water Quality Table



Griffith City Council COMMITTEE REPORT CLAUSE CL02 TITLE Construction of Waste Transfer Station Tender 4-14/15 - Final Report FROM John Roser, Waste Operations Manager TRIM REF 16/44523

SUMMARY

Construction of the Waste Transfer Station (WTS) commenced on the 18/11/15 and concluded on the 16/6/16. There were no major issues that arose over this construction period; there were minor delays from the local supplier of the Community Recycling Centre (CRC) shed, due to the specific design requirements set out by the Environmental Protection Authority (EPA). The landscaping was postponed due to the hot weather conditions Griffith had at that time. The construction project budget had a total of $800,000 set aside in the 15/16 Council operational budget and $247,000 grant funding from the EPA (for the CRC facility), this came to a total budget amount of $1,047,000. The total project spend came to $994,898.48 which is $52,101.52 under the budgeted amount. Overlooking the postponing of the landscaping (due to weather conditions) the construction time table was concluded only 2 weeks outside of the scheduled finishing time. Due to the CRC facility being a totally EPA funded entity, Council has a number of responsibilities under the funding agreement, one of which is that there has to be an audit carried out on the facility before it can be opened. This audit was carried out on the 23/6/16 by an officer from the local EPA office and the facility met all the requirements. As a result of the CRC facility passing the audit (on 23/6/16) the EPA has now passed this information onto the Premiers Department who will schedule an official opening date. They will liaise with Council staff regarding the invitation list and the type of opening event. It is important to note that under the funding agreement, there is to be no advertising until there is an official opening date set by the Premiers Department. As a result of the WTS construction project there were a number of other in directly related projects that were under taken these were;

Major upgrade of the power at Tharbogang Waste Management Centre, this provided 3 phase power to the workshop and pumping shed. A central metering system and the weighbridge is no blackout proof, which means that is can operated under the power of a generator.

The watermain was realigned in two locations and services and water meter were upgraded

Drainage around the Weighbridge was upgraded.

CCTV was extended to the front gate and intergraded into the existing system.

CL02 Construction of Waste Transfer Station Tender 4-14/15 - Final Report


It is Council intention to Staff the WTS for a period of time to provide assistance to the community in using the new WTS, this will also allow staffing requirements to be fully assessed.

RECOMMENDATION

(a) The Committee note the information in the report.

REPORT

Background

The WTS Design/Construction Project commenced in October 2013 with the calling for Expression of Interests for the design of a “Concept Design” for a Waste Transfer station. At the Utilities Management Committee held on the 17th October 2013 the committee endorsed Geolyse to author the above report.

A delegation from the Utility committee which consisted of two Councillor’s; Councilor Zappacpsta, Councillor Rossetto, two committee member from the public; Russell Rowely, Virginia Tropeano and two staff members David Tull, John Roser. Conducted a site visit to Gregadoo Waste Management Centre (Wagga Wagga City Council) The purpose of this site visit was to compare an operational WTS facility with the concept design provided by Geolyse, the delegation found the site visit helpful to assess the concept design of the WTS moving forward.

At the Utilities Management Committee meeting held on the 3/4/14 the committee recommended that the Tharbogang Waste Transfer Station Concept Design Report authored by Geolyse be presented to Council for endorsement. This subsequently occurred at the Ordinary Council meeting on the 22/4/14.

Application for $250,000 was made under the “Waste and Recycling Infrastructure Package” which is a NSW state Government initiative to return funds to the community that was collection by the Section 88 Waste Levey. The grant was for a facility that would receive (house hold quantities only) what the EPA deem to be House Hold Problem Waste.

These products include but not limited to:

Corrosive house chemical

Alcidine house hold chemicals

Acidic house hold chemicals

Lpg and non lpg gas bottles

Smoke detectors

Fluorescent tubes and light fittings

Batteries car/Batteries nickel cadmium – other

Used Oils

Oil and Water Based Paint. Council was notified on the 30/5/14 that it was successful in obtaining a grant for $247,000. At the beginning of this process the NSW Environment Trust and the EPA were made aware that this infrastructure project will be integrated into the WTS Design/Construction Project, therefore gaining benefit from the combined approval process and the competitive tendering process for the design and construction. Both government departments were supportive of this approach.

CL02 Construction of Waste Transfer Station Tender 4-14/15 - Final Report


As mentioned above, Council was successful in being granted $247,000 from the EPA under the Waste Less Recycle More program, to construct a Community Recycling Centre. This facility is integrated in the WTS design and will provide the community a disposal centre for house hold problem wastes.

A total development budget of $800,000 was approved by Council in the 2015/16 budget; this didn’t include the $247,000 CRC grant funds, therefore a combined total of $1,047,000 was available for 2015/16. The tender review committee identified certain possible savings which should not impede on the quality of the final product which could be negotiated with the preferred tenderer to meet the budget.

GHD were engaged on the 12/8/14 to provide a tender ready set of design/Construction plans for a Waste Transfer Station (WTS).

GHD project representative attended a Utilities Management Committee meeting on the 16/10/14 to present the detailed design plans at a 50% completed stage, to coincide with this presentation a walk though was conducted on site where the centre line of the road and the basic out line was marked for the committee members and attending Councillors to see the outline and basic configuration of the WTS.

In consultation with Council staff the final tender ready set of design/Construction plans for a Waste WTS from GHD were approved in mid-March 2015.

Council went to tender for tender for the construction of the WTS facility this closed on the 28/7/15. Five Companies submitted a tender for the WTS construction these were:

Joss Construction Pty Ltd Ace Infrastructure Pty Ltd G.A & J.A Young Pty Ltd ICG Wagga Pty Ltd Zauner Construction PTY Ltd During the tender evaluation process a preferred tenderer was identified and it was suggested that Council reject all tenders and negotiate with the preferred contractor and their sub-contractors, going through each item of documentation to see if costs can be reduced to meet the budget.

Council accepted the resolution put forward that;

“Council authorise the General Manager to negotiate with Joss Construction, being the preferred tenderer following evaluation, with a further report to be presented to Council within 60 days. The reason for selecting Joss Construction is that they scored the highest in the tender evaluation process.” Joss Constructions Pty Ltd re-submitted an adjusted price which was accepted by Council on the 22/9/15 and started construction on the 18/11/15.


This item links to Council’s Strategic Plan item L5 - Utilise facilities and services for optimal participation.

ATTACHMENTS

Nil


Griffith City Council COMMITTEE REPORT CLAUSE CL03 TITLE Griffith City Council Water Supply Allocation - Temporary Trade -

Internal Policy FROM Graham Gordon, Director Utilities TRIM REF 16/44384

SUMMARY

Griffith City Council received approval from the NSW Department of Primary Industries Water (DPI Water) on the 4 Dec 2015 allowing the temporary trade of Griffith City Council’s unused portion of town water allocation. On 8 Dec 2015 Griffith City Council adopted the recommendations of the Utilities Committee regarding temporary trade of part of Griffith City Council's water supply, this report presents a draft policy formalising the process for temporary water trading.

RECOMMENDATION

(a) The Utilities Committee approve the draft internal policy for the temporary trade of part of Griffith City Council’s water supply.

(b) The General Manager have delegated authority to apply the policy in relation to the temporary trade of part of Griffith City Council’s water supply.

REPORT

On 4 December 2015 Griffith City Council received a letter from the NSW Department of Primary Industries Water (DPI Water) informing Council that the Access Licence Dealing Principles Order 2004 had been amended to enable temporary trade of town water supply licences. Given that Griffith City Council could comply with the provisions in the Access Licence Dealing Principles Order 2004, it essentially gave Council approval to commence trading. On 8 Dec 2015 Griffith City Council adopted the recommendations of the Utilities Committee (as below) regarding temporary trade of part of Griffith City Council's water supply and Council commenced trading.

Minutes of Utilities Committee 07 December 2015 5 - ITEMS OF BUSINESS RECOMMENDED on the motion of Councillor Paul Rossetto and Russell Rowley that: (a) The General Manager has delegated authority to commence temporary trade of part of Griffith City Council’s water supply. (b) Residential and Commercial water supply always remain the first priority before trading to ensure enough water is maintained for the city requirements. (c) 4,000ML of Temporary Water Allocation is to be purchased by irrigators located within the Griffith Local Government area. (d) 2,000ML will be placed immediately on the market in parcels of up to 250ML per irrigator. (e) The balance will be reviewed by the Committee and placed on the market when appropriate.

CL03 Griffith City Council Water Supply Allocation - Temporary Trade - Internal Policy


(f) The revenue from the temporary trade of water be utilised for major community projects as determined by Council.

During the 2015/16 season, Griffith City Council temporarily traded 5,260 mega litres (ML) of town water supply at an average price of $205 per ML. Griffith City Council has an annual high security town water supply allocation of 14,407 ML. The city’s annual average consumption during the period 2006/07 to 2015/16 was approximately 7,200 ML. The town water supply usage for 2015/16 was 7,192 ML, this gives confidence to the temporary tradable value of up to 5,000 ML as an available amount at the start of each trading season. As outlined by the Utilities Committee and Council, the residential and commercial water supply must always remain the first priority and therefore the tradable amount should be reviewed each trimester to coincide with water usage and enable weather forecasts to be monitored. This internal policy will set out the guidelines for Griffith City Council to follow in relation to the temporary trading of Council’s town water supply, which will assist in capitalising on the best trading times within the market.


This item links to Council’s Strategic Plan item D6 - Develop policies that encourage sustainable growth.

ATTACHMENTS

(a) Draft Internal Policy - Temporary trade of Griffith City Council’s town water supply ⇩

35

CL03 Attachment (a) Draft Internal Policy - Temporary trade of Griffith City Council’s town water supply



Griffith City Council COMMITTEE REPORT CLAUSE CL04 TITLE Council Water Supply - Potable Water Main Pressure Information FROM Graham Gordon, Director Utilities TRIM REF 16/45766

SUMMARY

At the Ordinary Meeting of 14 June 2016 Councillors raised the question of the water pressure and flow rate in the Griffith and surrounding village’s potable water main reticulation system, in particular, the village of Yoogali. The purpose of this report is to provide the Utilities Committee with information relating to the pressure and flow rate, operating parameters and current delivery service within Council’s potable water reticulation system.

RECOMMENDATION

The Utilities Committee note the information within the report and acknowledge Council’s compliance with the levels of service in Policy WS-CP-210.

REPORT

Griffith City Council’s Water – Supply Levels of Service Policy (WS-CP-210, attached) defines Council’s minimum levels of service in relation to water supply for Griffith and its surrounding villages. Values (extract from Policy WS-CP-210) relating to the adopted levels of service for flow rate and pressure of the water supply are shown below:

Availability of Supply

Fire Fighting

Compliance with the Building Code of

Australia and NSW Fire Brigade

requirements (for all residential,

commercial and industrial areas)

% area served

100 (urban)

70 (rural)

Pressure

- Min. pressure when delivering 0.1 L/s

(6L/min)

Metres head

Kilopascal

30 (Griffith) 294 kPa

12 (Yenda)

118 kPa

- Max. static pressure Metres head

Kilopascal

70 (Griffith) 686 kPa

30 (Yenda)

294 kPa

CL04 Council Water Supply - Potable Water Main Pressure Information


Flow Rate and Pressure Testing was carried out on Saturday 2 July 2016 in various locations within the Griffith water reticulation network. Whilst the testing was carried out on the same day using the same method there are minor comparison differences in results due to the following unavoidable issues: - Friction losses in the system, the reticulated system varies in pipe size, material and

number of users. - Time of day when the testing was carried out. The results could be affected by how many

people were using the system in that area. - The head pressure (level of water) in the reservoirs, due to water usage in other areas,

therefore the level in the reservoirs could decrease or increase, thus causing a fluctuation in pressure.

Results on Flow Rate and Pressure Testing for the following locations carried out on Saturday 2 July 2016 are provided below:

Yoogali – East Street Static Pressure in the main = 580 kPa Residual Pressure in the main with a flow rate of 20 L/s = 360 kPa To fill up a 20 litre bucket from a tap just after the meter took 12 seconds (1.67 L/s) Yoogali – Altina Court Static Pressure in the main = 600 kPa Residual Pressure in the main with a flow rate of 20 L/s = 320 kPa To fill up a 20 litre bucket from a tap just after the meter took 12.3 seconds (1.63 L/s) Yoogali – Pilloni Road Static Pressure in the main = 460 kPa Residual Pressure in the main with a flow rate of 10 L/s = 340 kPa To fill up a 20 litre bucket from a tap just after the meter took 10.4 seconds (1.92 L/s) Collina – Hoad Street Static Pressure in the main = 580 kPa Residual Pressure in the main with a flow rate of 18 L/s = 470 kPa To fill up a 20 litre bucket from a tap just after the meter took 13 seconds (1.54 L/s) Collina – Gillmartin Drive Static Pressure in the main = 560 kPa Residual Pressure in the main with a flow rate of 20 L/s = 490 kPa To fill up a 20 litre bucket from a tap just after the meter took 16.6 seconds (1.21 L/s) Collina – Waugh Street Static Pressure in the main = 420 kPa Residual Pressure in the main with a flow rate of 20 L/s = 370 kPa To fill up a 20 litre bucket from a tap just after the meter took 14.6 seconds (1.37 L/s) South Griffith – Mandalay Drive Static Pressure in the main = 480 kPa Residual Pressure in the main with a flow rate of 30 L/s = 330 kPa To fill up a 20 litre bucket from a tap just after the meter took 20.3 seconds (0.99 L/s) West Griffith – Doongara Street Static Pressure in the main = 420 kPa Residual Pressure in the main with a flow rate of 16 L/s = 360 kPa To fill up a 20 litre bucket from a tap just after the meter took 20 seconds (1.0 L/s)



Lake Wyangan – Dickson Street Static Pressure in the main = 600 kPa Residual Pressure in the main with a flow rate of 14 L/s = 460 kPa To fill up a 20 litre bucket from a tap just after the meter took 13.6 seconds (1.47 L/s) Lake Wyangan – Mancini Drive Static Pressure in the main = 520 kPa Residual Pressure in the main with a flow rate of 20 L/s = 390 kPa To fill up a 20 litre bucket from a tap just after the meter took 16.7 seconds (1.20 L/s) Nericon – Lowde Street Static Pressure in the main = 390 kPa Residual Pressure in the main with a flow rate of 5 L/s = 220 kPa To fill up a 20 litre bucket from a tap just after the meter took 15.2 seconds (1.32 L/s) Yenda – Henry Street Static Pressure in the main = 260 kPa Residual Pressure in the main with a flow rate of 13 L/s = 240 kPa To fill up a 20 litre bucket from a tap just after the meter took 16.0 seconds (1. L/s) NOTE: All of the above results more than exceed Council’s supply level of service.

Griffith’s Pressure Reduction Zones (PRZ) Griffith City Council installed Pressure Reduction Zones (PRZ) for Griffith’s water supply

in 2007 as part of the State Government initiated Water Loss Management Program

(WLMP). This was open to all Local Water Utilities (LWU) in NSW of which 754 LWU’s

participated in the program. The Government contributed 33% funding to water

authorities to reduce water loss in their water reticulation systems by regulating pressure

within the system. The Water loss management program final progress and evaluation

report from 2006-2011 is attached for the committees information.

The WLMP part funded leak detection and repair programs, establishing metered areas,

metered pressure reduction zones and water main alterations to allow these systems to

function and to be monitored.

Flows and pressures for each zone are recorded by electronic equipment in the field.

The collected data is sent over a communication channel to a computer, where it can be

viewed and analysed. The system is called SCADA – Supervisory Control and Data

Acquisition.

Investigation work on Griffith City Council’s Defined Metered Areas (DMA’s) and

Pressure Reduction Zones (PRZ) commenced in 2007.

The reticulation system was analysed and divided into zones to gauge how each zone

would work with a single feeding water main that could be metered.

Flow data into the various zones were recorded from temporary installed meters. The

pressures were monitored across the zones with pressure loggers. Results indicated it

would be worth implementing pressure reduction in selected areas.



The zoning and operating pressure range were designed to comply with the supply

standards as per Council Policy WS-CP-210. It states a minimum service pressure of 30

m head at a flow of 0.1 litre/second (6 litre per minute).

The supply area was divided into nine zones. All was to be fitted with water meters.

Three metered areas, with traditional high water pressures, were identified to become

metered pressure control zones (refer to the PRZ zoning map).

The pilot pressure reduction program was for the areas south of the main canal and

Mackay Avenue. This area was exposed to very high pressures and experienced many

pipe bursts and leaks. The Pressure Reduction Valve (PRV) for this area (Zone 6) was

established on Noorla Street. It reduced the number of pipe bursts and resulted in

significant water savings.

The Department of Sustainability, Environment, Water, Population & Communities’

(DSEWPC) Water Saving Initiative also part funded upgrading water mains to establish

the pressure reduction zones like Lower Collina (Zone 3)

The Lower Collina PRZ (Zone 3) includes Driver, the lower lying part of Collina - east of

Clifton Boulevard, Mooreville, Beelbangera, Yoogali and serviced farms to the north of

Yoogali. Zone 3 became operational in 2011.

The third pressure reduction zone (Zone 8) is the Lake Wyangan PRZ.

DMA & DMA/PRV zoning and Water Saving Initiative work was completed in 2011 at a

cost of $1.36 million. Funding support received amounted to approximately $450,000.

Since implementation:

The combined water savings achieved by introducing pressure control zones and the

leak detection and repair work across the reticulation system is in the order of 516

megalitres per year.

The flows and pressures into the DMA and DMA/PRV zones are monitored and recorded

on an ongoing basis.

These records confirm compliance with the service standards in Council Policy WS-CP-

210

Investigation of pressure complaints: The following are contributing factors that should be considered for individually observed low pressure situations once the pressure in Council’s main has been confirmed as acceptable minimum pressure and flow rates:

1. Old galvanised pipes inside the property that had corroded are restricting flow and

reduce pressure.

2. Old galvanised service from the main to the water meter may cause reduced flow

and pressure.

3. A damaged water meter may restrict flow and reduce pressure.



4. Too small a water meter or internal water pipes will not be able to provide enough

flow for every day house hold use, run appliances and sprinkler systems at the same

time.

5. Owner / occupiers installing water saving devices without advice from qualified

plumber may cause too low flow rates for proper operation of gas hot water systems.

6. Many water supply fixtures come equipped with flow restrictors eg 8 or 12

litres/minute (0.133 or 0.2 litres/second), which may be of an inappropriate size for

the particular supply.

7. Most house hold appliances are pressure rated at 500KPA.In areas where pressures

exceeded these limits, pressure reducing valves may have been fitted by plumbers to

prevent damage.

8. In extreme heat wave conditions all zones experience high flows that result in lower

supply levels in the reservoirs and reduced pressure.

9. In high demand times, pressures may be lower than what is shown on the

accompanying graphs. Council’s supply system managed to maintained reticulation

pressures above the minimum required when these conditions occurred.


This item links to Council’s Strategic Plan item E1 - To reduce consumption and loss of water.

ATTACHMENTS

(a) Water - Supply Levels of Service Policy WS-CP-210 ⇩ 42

(b) DMA & PRV Zone Map ⇩ 46

(c) Water Loss Management Program - Final Progress & Evaluation Report 2006 - 2011 ⇩

47

CL04 Attachment (c) Water Loss Management Program - Final Progress & Evaluation Report 2006 - 2011



Griffith City Council OUTSTANDING ACTION REPORT TITLE Outstanding Action Report TRIM REF 16/43777

RECOMMENDATION

The report be noted.

ATTACHMENTS

(a) Action Report - Utilities Committtee - 21 July 2016 ⇩ 64

6 Attachment (a) Action Report - Utilities Committtee - 21 July 2016


ACTION REPORT UTILITIES MANAGEMENT COMMITTEE – 21 July 2016

Date of Meeting

Agenda Item Action Action Officer Date Comment

15/10/2015

Business Arising

7.2 Lake Wyangan

Graham Gordon to write to MI re future planning of infrastructure to assist with circulation of water (flow through) in the north & south lake to assist in improving the quality of water at Lake Wyangan

Graham Gordon Ongoing

Given that there is a study currently being done on waste quality at Lake Wyangan, co-ordinated by Fiona De Wit, a letter to MI is not practical at this stage until the results of the report are presented.

21/4/2016

CL02 GCC Water Supply Allocation – Temporary Trade

Recommended on the motion of Cr M Neville & Russell Rowley that a report be presented at the next Utilities Meeting on the 21st July 2016 regarding future trading of water allocation for the 2016/17 financial year

Graham Gordon Report completed. To be presented to the Utilities Committee on 21/7/16.

21/4/16

6. General Business –

6.2 Waste Transfer Station

Graham Gordon to write a report on the completion of the Waste Transfer Station & present it at the next Utilities Meeting on the 21st July 2016

Graham Gordon Report completed. To be presented to the Utilities Committee on 21/7/16

21/4/16

6. General Business –

6.4 Garbage Bins Jondaryan Ave Griffith

Graham Gordon to advise Committee on Bin Replacement Policy at the next Utilities Meeting on the 21st July 2016

Graham Gordon To be updated on 21/7/16 as part of General Business

agenda of utilities committee - 21 july 2016

Documents