Agenda of Infrastructure Policy Committee

Infrastructure Policy Committee 4 June 2019

3.1 Current Works

RECORD NUMBER: 2019/1014

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 note 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

Council’s maintenance crews continued to undertake routine proactive and reactive pothole patching throughout the City including:

· Parking lanes on Woodward Street in the vicinity of the butchery and café

· Botanic Gardens car park

· Heath Place.

Council staff also began the gravel road maintenance grading and gravelling program and will work their way through the whole of the gravel road network for treatment as required.

Road Upgrading

Forest Road

Works on the upgrading of Forest Road are progressing with sections near Ginns Road and between Kelly Lane to Gander Road widened, strengthened and sealed. Some defects have been identified that will be dealt with under warranty by the contractor. Works are also now being undertaken on the Orchard Road to Evergreen Lane portion.

Traffic Facilities

Woodward and Wentworth Street Roundabout

Work switched over to the western side of the roundabout this month with traffic moving across to the eastern side and restricted movements put in place into Wentworth Lane. Pouring of the sub-base and base has been completed on this western side. Works will now begin to form and pour approach islands and construct road approach transitions. Fencing to the Council owned house on the south eastern corner has also begun to be restored in accordance with heritage requirements. The power pole in the centre of the roundabout will be relocated by Essential Energy approved contractors in late May.

Photo: Woodward Street roundabout at Wentworth Lane with all traffic shifted to eastern side

CONCRETE AND DRAINAGE

Footpath construction

Footpaths were constructed in:

· Glasson Drive

Footpath replacements were undertaken in:

· March Street from Hill Street to Sale Street

· Kite Street from Sale to Hill Street.

Drainage Maintenance

With the permission of Orange High School, Council staff created improved diversions for overland stormwater flows and cleaned out stormwater drains that were causing nuisance flooding for neighbours in Clem McFawn Place adjoining the school’s farm paddocks off Kearneys Drive. Council’s road drainage and upstream development catchment discharges into these paddocks further up on Kearneys Drive.

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	April 2019
Leaking meters	422	54
Faulty meters (incorrect readings)	133	5
No supply	72	4
Water pressure complaints	24	1
Meter box/lid replacements	57	11
Water quality	46	6
Service break	9	0
Service leak	36	13
Main break	63	6
Main leak	311	19
Valve leak	23	0
Hydrant leak	90	2
Total Water Requests	1286	121

Private Works Orders

· 28 Miriam Way – 20mm diameter water service

· 40a Rosemary Lane – 20mm diameter water service.

Water Construction Works

· The water main installation for the water quality improvements at Lake Canobolas are nearing completion with 90% of pipe installed. Works are expected to be completed in June 2019.

· The water main renewal of Moulder Street between Endsleigh Avenue and McLachlan Street is nearing completion with the 100mm diameter water main installed and water services currently being reconnected. Works are expected to be completed in June 2019.

· Council has installed a new valve in Dean Drive to assist with water main pressures in the area.

SEWER SERVICES

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

Category	July 2017 – June 2018	April 2019
Sewer blockages	391	26
Odour	21	3
Overflows	140	20
Total Sewer Requests	552	49

Private Works Orders

· 28 Miriam Way – relocation of sewer junction

· 28 Sterling Avenue – sewer junction installation

· 212 Summer Street – sewer manhole installation

· 40a Rosemary Lane – sewer junction connection

· 15 Breen Street – sewer manholes construction and junction installation.

Sewer Construction Works

· Council is currently in the process of renewing 10 sewer manholes as part of the sewer manholes renewals program. Works have been completed on eight of the 10 manholes with all works proposed to be finalised by June 2019.

· The sewer mains renewals program is nearing completion with only some minor defects remaining. Works are expected to be completed by June 2019. Council has renewed approximately 3780 metres of 150mm diameter sewer main and 350m of 225 mm diameter sewer main.

WATER SUPPLY SECURITY

Water Storage Levels

The combined storage of Suma Park and Spring Creek Dams is currently 36.35%. Water storage trends for the combined storages since October 2016 are shown in the graph below.

Location	Date	Level Below Spillway (mm)	% of Capacity
Suma Park Dam	17 May 2019	11885	28.82
Spring Creek Dam	17 May 2019	1520	68.59
Lake Canobolas	17 May 2019	1849	53.19
Gosling Creek Dam	17 May 2019	1821	52.06

Supplementary Raw Water Sources

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

Raw Water Source	February 2019 (ML)	March 2019 (ML)	April 2019 (ML)	Total (ML) 2018/2019
Bores*	10.91	12.15	11.42	110.75
Stormwater	36.10	57.74	0.52	563.22
Macquarie River	5.43	7.60	21.29	461.26
Total	52.44	77.49	33.23	1135.23

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

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/.

The Decision Support Tool (DST) analysis has been completed for the third quarter 2018/19, with continuing dry conditions requiring that all available supplementary raw water sources continue to be operated. The next DST is planned for July 2019.

Macquarie River Flows

The flows in the Macquarie River monitored downstream of Long Point (Station 421192) did not exceed the flow rate trigger of 119 ML/d in the period of 24 April to 21 May 2019.

The chart below was sourced from the WaterNSW website with flows presented in megalitres per day (ML/d).

Water Consumption

Average daily residential water consumption during the week ending 23 May 2019 was 149 litres per person per day. The target under Level 4 water restrictions is 200 litres per person per day. The graph below shows the average daily residential water consumption trends since June 2018.

The average daily city-wide water consumption for the period between 26 April 2019 and 23 May 2019 was 9.66 ML/day.

Water Restrictions

Residents are currently on Level 4 water restrictions.

Level 5 water restrictions are to be implemented when the combined Spring Creek and Suma Park Dams water storage drops below 35% (currently at 36.35%). Projecting forward and assuming no inflows (i.e. a worst case supply curve) and based on the current water demand, modelling has predicted that Council may need to implement Level 5 water restrictions in June.

Council facility water audits

Council staff will be undertaking water audits of its own facilities over the next month. Staff will be focussing on the following areas:

· All parks and gardens (in particular high water users such as Wade Park, Cook Park and Robertson Park)

· Civic Centre

· Library/Art Gallery

· Aquatic Centre

· Works Depot

· Childcare centres.

Water Savings Action Plans for each facility will be developed and implemented over time.

Non-residential water use

Council staff will also be engaging with large water use businesses in order to develop Water Savings Action Plans (WSAP’s). Non-residential water consumers have an important role to play in conserving Orange’s water and reducing the likelihood that greater restrictions will be introduced. Council has developed a tool to assist non-residential users in assessing their current water use levels and implementing changes that can be made to improve their water efficiencies. Potential benefits of completing a WSAP include:

· Improved management of water consumption resulting in reduced water-related costs;

· Change in staff behaviour and strengthened reputation;

· Development of a plan for the continuity of activities, where appropriate, in times of drought;

· Support of broad community efforts in reducing the likelihood that greater restrictions are introduced in the future.

DRINKING WATER QUALITY

Water samples are collected as a component of Orange City Council’s Drinking Water Quality Monitoring Program in accordance with 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 April 2019 complied with the Australian Drinking Water Guidelines.

EUCHAREENA ROAD RESOURCE RECOVERY CENTRE LANDFILL STAGE 3 (ERRRC)

The construction of the Euchareena Road Resource Recovery Centre (ERRRC) is complete. Staff have reviewed the quality control report and requested minor amendments from the contractor to before its submission to the EPA and Department of Planning.

Decommissioning of Dam off Hawkes Lane

The decommissioning of Hawkes dam has been completed, with only minor fencing works remaining to be completed, to be carried out by a separate fencing contractor.

SHIRALEE SEWER

Council’s design office has been progressing the design of additional sewer to service the western portion of the Shiralee development area. Consultants have completed the initial environmental walkover and the geotechnical investigation is almost complete. To date only minor alignment changes are envisaged.

The valuation of potential easements is also underway. This will allow negotiations to commence with private landholders, Transport for NSW where the pipe is proposed to transverse their land.

Southern Feeder Road CONSTRUCTION (SFR)

As previously mentioned additional geotechnical investigations were required to resolve issues surrounding piling. As a result of modeling it has been determined that the constructed piles on the western side will satisfactorily carry the required load and have minimal settlement.

It is anticipated that a new design for the eastern abutment will be completed this week.

AIRPORT PASSENGER NUMBERS

Passenger numbers for April 2019 were 6,340 compared with 5,823 in the same month in 2018.

Airport Energy Usage

Energy used at the airport during April 2019 was 21,226.60 kWh at a cost to Council of $5,857.49.

ENERGY USE

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

Monday 27 May 2019