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North Head Biosolids Project Update

November 2019

November 2019 2

Why are we here?

The objectives of the Biosolids Upgrade Project are:

• Sludge Production : Increase solids process capacity from an

average of 40 to 70 dry tonne/day by 2043

• Improve biosolids quality from Grade B4 to Grade B2 to

ensure ongoing 100% beneficial reuse of biosolids

• Improve Reliability : Remove or reduce risks associated with

single points of failure in the process and improve reliability

Project Timeline

Needs Approval Business Case completed (December 2015)

Concept design completed (November 2017)

Review of Environmental Factors on public display (April 2018)

Delivery Approval Business Case approved by Board (December 2018)

Request for Tender released (February 2019)

Contract awarded (August 2019)

Stage 1 on track to be completed (December 2019)

Construction completed (2022)

November 2019

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Stage 1 Design Partner (UGL & GHD )

Detailed Design Consultant – Stage 2

Sub-contractors

Suppliers & Vendors

Surveyor team

SW Nominated Suppliers

SW Smart SCADA Team

JH UGL JV – MC Contractor

November 2019

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Stage 1 – Front End Engineering and Design

Currently, reviewing options and scoping to develop the maximum

target cost (MTC) for approval

• Next two months, a series of optioneering workshops between

project team and production team to develop solution to meet objective and finalise MTC

• Obtain Approval to proceed from Sydney Water Managing Director

November 2019

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Stage 2 - Construction

• Finalise detailed design

• Start procurement of new equipment

• Construction to commence Q1 of 2020

• Nominal finish date Dec 2022

November 2019

Project Overview and Scope 2020-2022

New digesters 4 and 5

Relocate cogen #2

Digester 1 – 3 upgrade

Relocated cogens 1 & 2

Sludge and recup

thickening

Polymer

Sludge screening,

degritting and bins

Sludge tanks modification

and refurbishment

Gallery 27

3rd WGB

Dewatering and

outloading building

Polymer

Relocate cogen #1

Decommission and

remove redundant

assets:

- Outloading

- Thickening

- Dewatering

- Sludge hoppers

- Strainpresses

Switchroom/s

Gas holder

Recycled water and

filtered effluent

Odour control systems

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Questions?

November 2019