Project Practical Completion Report PROJECT DETAILS

Title Sewer Pipe Bursting – Tozer to Dudley Streets, West Kempsey

Scope This project replaces an aged and damaged sewer main located in the Wigay Aboriginal Cultural Park. This site was once an old landfill site but has been capped and abandoned. The site is now the Wigay Aboriginal Cultural Park, which boasts numerous native food flora of importance to the Aboriginal people. Due to this cultural importance the pipe bursting method was deemed to be the best method of renewal of this asset. Due to issues occurring during wet weather events in the localised area (particularly Dangar Street) it was also deemed appropriate to upgrade the size of the sewer main from 150mm to 315mm. Pipe bursting consists of using a hydraulic pulling machine attached by steel rods to a bursting cone that is pulled through the existing pipeline breaking it and pushing the existing earth out to incorporate the larger pipe diameter with the pipe being dragged behind the bursting cone. The process utilises minimal ground disturbance with only 4 excavations required for the process to be completed. The replacement pipe is 315mm polyethylene which should give the new pipeline a theoretical lifespan of 100 years as well as increasing capacity in the network.

Linkages Operational Plan • HS05.1.5 – Renew aged sewer mains across sewer collection network

Date 30th September 2020

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PROJECT IMAGES

Lining up the pipeline. The bursting cone can be clearly seen at the front of the pipeline.

Steel rods used to pull the bursting cone and pipeline through the existing pipeline

New pipeline entering the entry excavation Bursting cone and pipeline being received into the exit excavation

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Maintenance hole jackhammered out to

accommodate larger pipe diameter Pipeline being backfilled. Concrete

encasement can be seen at the base of the maintenance hole

PROJECT PLAN

Planned Actual Variation

Start September 2020 Start September 2020 Start Nil

Finish September 2020 Finish September 2020 Finish Nil

CURRENT STATUS

Complete Project completed in accordance with project scope.

FINANCIALS

Budget Expenditure

Original Budget

Current Approved

Current (Including

Commitments)

Estimated Cost to

Complete

Projected Final Cost

Variance from

Approved Budget

$90,000.00 $90,000.00 $87,147 $0 $87,147 -$2,853

VARIATIONS

# Description of Variance 1. Minor variances only between estimated and actual costs.

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Project Practical Completion Report PROJECT DETAILS

Title Gowings Hill Road, Dondingalong

Scope Widen existing pavement from 7 metres to 9 metres for a length of 1410 metres. Gravel overlay full width, bitumen seal and line marking.

Linkages Operational Plan 2019-20 • WS05.3.2 - Deliver the sealed road network renewal and rehabilitation

program. Delivery Program 2017- 2021

• Forster economic growth, customer confidence and a prosperous community through improved infrastructure.

Date 5 November 2020

PROJECT IMAGES

Box Out to Widen Pavement Stabilisation

Final Seal Line Marking

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PROJECT PLAN

Planned Actual Variation

Start March 2020 Start April 2020

Start 1 month

Finish June 2020 Practical Completion

August 2020 Finish 2 months

CURRENT STATUS

Complete Project completed in accordance with project scope.

FINANCIALS

Budget Expenditure

Original Budget

Current Approved

Current (Including

Commitments)

Estimated Cost to

Complete

Projected Final Cost

Variance from

Approved Budget

$930,000 $930,000 $1,099,063 $0

$1,099,063 $169,063

VARIATIONS

# Description of Variance 1 Wet weather impacted areas of pavement. Stabilisation of the basecourse was

undertaken to alleviate impacts of moisture ingress into the pavement to ensure appropriate pavement moisture levels could be achieved. Stabilisation work was highly successful.

2 Subsoil drainage was required in selected locations in order to further relieve subsoil moisture and improve pavement drainage.

3 Wet weather impacts resulted in lost time of approximately 2 weeks.

4 Project program was impacted due to COVID-19, mainly due to scheduling difficulties during April / May 2020.

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Project Practical Completion Report PROJECT DETAILS

Title Stuarts Point Road, Stuarts Point (Hunters Road to Browns Road)

Scope Widen existing pavement from 8 metres to 10 metres. Drainage culverts widened to match. Gravel overlay pavement full width, bitumen seal and line marking. 900 metres of guardrail placed to improve safety.

Linkages Operational Plan 2020-21 • WS05.3.2 - Deliver the sealed road network renewal and rehabilitation

program across regional, rural and local roads. Delivery Program 2017- 2021

• Forster economic growth, customer confidence and a prosperous community through improved infrastructure.

Date 5 November 2020

PROJECT IMAGES

Box Out to Widen Box Out to Widen

Final Seal Final Seal

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PROJECT PLAN

Planned Actual Variation

Start June 2020 Start May 2020 Start 1 month (ahead)

Finish October 2020 Finish October 2020 Finish Nil

CURRENT STATUS

Complete Project completed in accordance with project scope. Additional work undertaken per variation items outlined.

FINANCIALS

Budget Expenditure

Original Budget

Current Approved

Current (Including

Commitments)

Estimated Cost to

Complete

Projected Final Cost

Variance from

Approved Budget

$1,353,000 $1,353,000 $1,194,208 $0 $1,194,208 -$158,792

VARIATIONS

# Description of Variance 1 Heavy patch included at King’s Creek as an additional safety / road pavement benefit.

2 Staff are seeking permission to spend remaining funds on the surrounding area to enhance the benefits of the project realised, as the $1,353,000 budget is 100% grant funded.

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