Agenda of Infrastructure Policy Committee

Infrastructure Policy Committee 7 November 2018

3.1 Current Works

RECORD NUMBER: 2018/2644

AUTHOR: Ian Greenham, Director Technical Services

EXECUTIVE Summary

The purpose of this report is to update Council on construction and maintenance works which have been carried out since the last current works report to Council.

Link To Delivery/OPerational Plan

The recommendation in this report relates to the Delivery/Operational Plan strategy “9.1 Preserve - Construct and maintain a road network meets the community’s transport and infrastructure needs”.

Financial Implications

Nil

Policy and Governance Implications

Nil

Recommendation

That Council resolves to acknowledge the information provided in the report on Current Works.

further considerations

Consideration has been given to the recommendation’s impact on Council’s service delivery; image and reputation; political; environmental; health and safety; employees; stakeholders and project management; and no further implications or risks have been identified.

SUPPORTING INFORMATION

Road Maintenance

Road maintenance in the form of routine pothole patching was undertaken across the City by both the mechanical jet patching unit and by hand with Council’s asphalt patching crew.

Road Upgrading

Cargo Road

Works on Cargo Road have continued with two separate works teams on site.

Council’s contractor CPB has installed new dual water mains and moved on to begin the last stages of drainage installation. Hard rock has been encountered in the area east of Witton Place extending the duration of the pipe installation works in this area.

Council crews have been preparing the base for road construction from Carwoola Drive up to Witton Place. Crews have encountered significant amounts of unsuitable natural materials which have had to be removed and replaced in and round the Yackerboon Place intersection. During these works traffic access has been maintained.

Forest Road - Bloomfield

Council’s contractor has progressed to the point of placing the final layers of pavement at the northern end of the project with sealing planned for the week beginning Monday 29 October. Work has also begun on forming and pouring a bus bay at the Wangarang driveway and completed further sections of concrete cycleway.

Work has also begun to remediate poor quality asphalt surfacing placed in June outside the hospital. This work that was undertaken by a sub-contractor to the head contractor, Hamcon Civil is being done under warranty at no additional cost to Council.

CONCRETE AND DRAINAGE

Footpath construction

Work continued on the construction of a new concrete footpath on Anson Street from Matthews Avenue to Douglas Place.

Footpath rehabilitation

Council crews began footpath maintenance and rehabilitation works in:

· Anson Street – from Summer Street to Kite Street (concrete grinding and asphalt)

· Sale Street – from Orana Street to Benview Avenue (concrete)

· Sale Street – in the block between Byng Street and Summer Street (hot mix asphalt)

· McLachlan Street – from Byng Street to Summer Street East (concrete)

Drainage Improvements

Upgrading to drainage structures was undertaken on Canobolas Road to remove deep table drains that posed potential traffic hazards.

WATER SUPPLY SERVICES

The type and number of water supply service responses by maintenance staff are shown in the table below.

Category	July 2017 – June 2018	September 2018
Leaking meters	422	25
Faulty meters (incorrect readings)	133	7
No supply	72	7
Water pressure complaints	24	0
Meter box/lid replacements	57	3
Water quality	46	2
Service break	9	0
Service leak	36	0
Main break	63	2
Main leak	311	27
Valve leak	23	0
Hydrant leak	90	4
Total Water Requests	1286	77

New Water Services

· 18 Worboys Street

· 2 Snowy Way

· 22 Cedar Street

· 12 in Scarborough Street (meter and boxes only)

· 87 Dean Drive

· 9 McCormick Place

· 3 Patrick Close

· 3 Hamilton Mews

· 21 and 35 Miriam Drive

· 17 Connemara Drive

Water Service Renewals

· 6 Nandillion Ponds Drive

· 148 Clergate Road

· 368 Anson Street

· 8 Squatters Ridge

· 47 Moulder Street

Water and Sewer Private Works Orders

· 107 Moulder Street, 40mm diameter fire service

· 21 Beasley Road, 20mm diameter water service

· William Maker Drive, 4 of 20mm diameter dual water services

· 26 Colliers Drive, 32mm diameter water service

· 111 Moulder Street, 32mm diameter water meter

· 140 Clergate Road, 32 mm diameter water service

· 47 -49 Prince Street, 150mm diameter sewer connection

· 1/3 Bligh Street, new water service and sewer connection

· 3 Mulga Bill Place, new water service

Water Construction Works

· Cargo Road

All water services have been transferred to the recently constructed water main on Cargo Road and the old section of water main decommissioned. The new water main is now connected to the Ploughman’s Valley Booster Pump Station and is in service. The Carwoola Drive water main connection is yet to be completed.

In undertaking this work, a number of operational issues were encountered leading to a number of water pressure complaints from the elevated areas in the Wentworth Estate. The low water pressure complaints occurred when Cargo Road Reservoir was being refilled from the Ploughmans Valley booster pump station, drawing water away from the Wentworth Estate area. The operation of this system has now been modified so that the Cargo Road reservoir is filled during off peak times (overnight).

Further modifications to the operation of the Ploughmans Valley booster pump station will also be investigated over the next month.

· Olver Street Water Main Renewal

The Contractor has commenced work and the water main renewal is to be completed by 26 October 2018, after which water services will be transferred to the new water main.

· Hawkins Lane Water Main Renewal

The Contractor is to commence work after completion of the water main renewal works in Olver Street.

· Icely Road Water Main Renewal (Wakeford Street to Allenby Road)

This tender closes on 25 October 2018.

SEWER SERVICES

The type and number of sewer service responses by maintenance staff are shown in the table below.

Category	July 2017 – June 2018	September 2018
Sewer blockages	391	36
Odour	21	1
Overflows	140	18
Total Sewer Requests	552	55

Sewer Construction Works

· Sewer Relining program 2018 -19

This tender has closed and is currently being assessed.

· Sewer Vent Removal Program 2018 -19

A Request for Quotation has been distributed for the removal of 10 vent pipes this year. This work is to be completed by January 2019.

WATER SUPPLY SECURITY

Water Storage Levels

The combined storage of Suma Park and Spring Creek Dams is currently 53.5%. Water storage trends for the combined storages since July 2015 are shown in the graph below.

Location	Date	Level Below Spillway (mm)	% of Capacity
Suma Park Dam	19 October 2018	7837	46.64
Spring Creek Dam	19 October 2018	870	81.06
Lake Canobolas	19 October 2018	1202	67.57
Gosling Creek Dam	19 October 2018	1098	69.73

Supplementary Raw Water Sources

A Decision Support Tool (DST) quarterly review was undertaken 22 October 2018 to determine the need to continue the transfer of supplementary raw water sources to Suma Park Dam during the October to December quarter. A Bureau of Meteorology forecast for dry conditions, in combination with higher demands as warm temperatures prevail, generated the need for continued operation of all supplementary supplies in the upcoming quarter. Information on the DST and a more detailed monthly summary of raw water transfers can be found on Council’s website at https://www.orange.nsw.gov.au/water/oranges-water-supply/.

Extractions from the supplementary raw water supplies in recent months are provided in the table below.

Raw Water Source	July 2018 (ML)	August 2018 (ML)	September 2018 (ML)	Total 2018/2019
Bores*	13.51	14.83	10.49	38.83
Stormwater	2.13	30.28	109.47	141.88
Macquarie River	0.00	0.00	124.86	124.86
Total	15.64	45.11	244.82	305.57

* Bores include two at Clifton Grove and one at the Showground

Council commenced transferring pre-treated stormwater from the harvesting scheme to Suma Park Dam on 28 August, with a total of 320.47 ML transferred up until 21 October 2018.

Macquarie River Flows

The flows in the Macquarie River monitored downstream of Long Point (Station 421192) exceeded the flow rate trigger (119 ML) to operate the Macquarie Pipeline on 15 October 2018 with 24 ML extracted over five days.

Data in the chart below was sourced from the WaterNSW website with flows presented in megalitres per day (ML/d) and represents the period 19 September to 23 October 2018.

Water Consumption

Average daily water consumption during the week ending 18 October 2018 was 173 litres per person per day. The average daily water consumption trends since October 2017 is shown in the graph below. This highlights how well Orange residents are conserving water, well below the Level 2 restriction targeted water use of 240 litres per person per day.

The average daily city-wide water consumption for the period between 19 September 2018 and 19 October was 12.6ML/day.

Water Restrictions

Residents are currently on Level 2 water restrictions. Level 3 water restrictions will be implemented when the combined storage of Suma Park and Spring Creek Dams reaches 50% (currently at 53.5%).

Projecting forward, assuming no inflows (that is a worst case supply curve) and based on the current water demand, we may enter Level 3 Restrictions in early to mid-December 2018.

During Spring and Summer, Council’s Communications team will be running a community awareness program predominantly through social media. It will focus on dam levels, water consumption, water saving ideas and current and potential future water restrictions

Council is also a member of Smart WaterMark, an organisation that provides advice to residents on how to save water. The Smart Water Advice website can be accessed via Councils website https://www.orange.nsw.gov.au/water/

DRINKING WATER QUALITY

Water samples are collected as a component of Orange City Council’s Drinking Water Quality Monitoring Program which forms part of the NSW Health requirements. Samples are collected regularly and sent to a NSW Government National Association of Testing Authorities (NATA) accredited laboratory for analysis. Samples collected in September 2018 complied with the Australian Drinking Water Guidelines, 2011.

CENTRAL TABLELANDS REGIONAL WATER SECURITY PROJECT – Orange To Carcoar Pipeline

The current date for practical completion of the Orange to Carcoar Pipeline by the contractor Leed Engineering remains as 30 November 2018. The contractor is confident that they will meet this date.

As mentioned previously, a small section of pipe between Lake Rowlands and the Carcoar filtration plant was removed from the contract when Central Tablelands Water (CTW) expressed an interest in installing it. The pipe is onsite and CTW propose to commence work in February with completion expected in March.

Pre-commissioning will be completed on the morning of 25 October 2018. On the afternoon of 25 October the first of the five pumping scenarios will commence. For the contractor to demonstrate that commissioning was successful each of the seven day tests must run uninterrupted for the full seven days.

Decommissioning of Hawke Dam

At the special meeting of Council 17 October 2018, local contractor PCB was awarded the contract for the decommissioning of Hawkes Dam. The contractor has programmed construction to commence on 12 November 2018. The date for practical completion is 22 February 2019.

As part of the decommissioning, the dam will be converted into a detention basin. This is anticipated to reduce the peak flow leaving the dam in a 1 in 100 year storm event from about 6000 litres per second to approximately 190 litres per second.

Extensive investigation and modelling occurred as part of the design process in an attempt to retain some water in the dam, however the residual dam break risk remained at an unacceptable level. It was on this basis that a dry basin was designed.

Southern Feeder Road CONSTRUCTION

The Request for Tender (RFT) for the Southern Feeder Road (SFR) between Elsham Avenue and Forest Road will close on Thursday 8 November 2018. This project will involve the construction of 720m of roadway and a bridge over the Bathurst to East Fork Railway line. As a separable portion, the RFT will include the extension of Edward Street through the old saleyards site from McNeilly Avenue to the Proposed SFR.

Council has purchased drainage culverts for the work which are currently on site. Alterations to utility services such as power, gas and telecommunication are anticipated to be complete before the main construction contractor is onsite.

Old Hospital Site

Council received a Site Audit Report and Site Audit Statement for the old hospital site from our consultant hygienists, Geosyntec Consultants Pty Ltd on 5 October 2018. This statement, which identified that the site was free from contamination, allowed a completion certificate to be issued to the demolition contractors Zauner.

EUCHAREENA ROAD RESOURCE RECOVERY CENTRE LANDFILL STAGE 3 (ERRRC)

As a preconstruction requirement for the stage 3 cell at the ERRRC, the contractor had to produce a Construction Environmental Management Plan (CEMP) for approval by the Department of Planning and Environment. The CEMP submitted by Keeden Contracting was accepted by the Department on 17 October 2018. It is anticipated the site facilities will be placed at the ERRRC within the next week.

The current date for practical completion of this project is 25 February 2019.

CLEANING SERVICES CONTRACT UPDATE

Council has requested a quarterly update on the Cleaning Services Contract let to SKG.

· Upon commencement of the contract SKG experienced issues with their subcontractor capability and reliability.

· The sub-contractor issues negatively affected the level of service (LOS) and this was acknowledged by SKG.

· To address LOS concerns a new subcontractor was engaged to assist in improving performance.

· The new subcontractor is an Orange owned and operated business employing local staff.

· There have been quality issues as the new contractor is on-boarded to Council operations, however it is expected this will improve in the medium term as sub-contractor site knowledge increases and process alignment is improved.

· A formal contract administration framework is in place to manage the contract delivery, and at present Building Services meet fortnightly with SKG representatives.

· SKG are proactively driving continual improvement with sub-contractor LOS and this is reviewed through the regular operations meetings.

· The new tender contract is continuing to deliver significant cost savings for Council in this area.

AIRPORT PASSENGER NUMBERS

Passenger numbers for September 2018 were 6,726 compared with 5,495 in the same month in 2017.

Airport Energy Usage

Energy used at the airport during September 2018 was 23,421.04 kWh at a cost to Council of $6,024.81.

ENERGY USE

The following information is sourced from E21, Council’s energy software.