20120118102309.2012 01-16 cmea presentation jatiluhur

Jatiluhur - Jakarta Pipeline & Water Treatment Plant

17 January 2012

2

Project Summary

• Current piped water supply of 14,000 l/sec is inadequate

for current demand

• Demand predicted to double by 2023 to 30,000 l/sec

• Water security and pollution from West Tarum Canal

(WTC) is a concern

• Scheme to provide 15,000 l/sec of treated bulk water

over 15 years and 3 stages

• 5,000 l/sec through 78km, 1.8m diameter pipe per stage

• Piped supply offers security and quality improvements

3

Project Scale

• Hampton WTP – London. UK’s Biggest WTP @ 9.2 m3/s

• Jatiluhur is 60% Bigger @ 15 m3/s

4

Overview of Project

Water Treatment

Plant Near Curug

River

Intakes

Buaran

Offtake

Jakarta (Cawang)

Tambun

Offtake

Rawalumba

Offtake

Puser Jaya

Offtake

Muara Karang

Offtake

N

Jatiluhur

Reservoir

Key

Jatiluhur to Jakarta Pipeline:

Additional Delivery Pipeline

Required:

Water Treatment Plant Site:

River Intake Site:

Not to Scale

The Conveyance of Treated Water from Jatiluhur Reservoir to Jakarta

5

Toll

Road WTC

Major

Significant

Over Bridge

Quantitative Route Comparison

Comparison of Engineering Obstacles on Toll Road and West Tarum Canal Route Options

11

9

30

4

6

7

40% Price

Difference

6

Qualitative Options Comparison

Comparison of Toll Road and West Tarum Canal Route Options

Toll

Road

West

Tarum

Canal

Comments

Existing Land Corridor Equal

Single Land Administrator PJT2 also supply water and power

Hydraulic Profile High point in TR may increase pumping costs

Construction Access Toll junction work access problematic

Disruption (During Construction) Extensive traffic disruption likely

Disruption (Post Construction) May impact TR widening plans

Known Other Services WTC know to have extensive buried services

Social Impact Illegal development on WTC right of way sections

Environmental Impact Equal

Damage Risk (Accidental) Vehicle accident with pipe is significant risk

Damage Risk (Deliberate) Illegal connections more likely on WTC route

-

-

= Advantage

= Disadvantage

7

Toll Road – Other Constraints

• BPJT field Survey on 4th April 2011 from Bekasi to Cawang concluded it would be

impossible to install proposed pipeline

• Kep Men Kimpraswil Nr 353/2001 Chp V “Utilities in the Toll Road”

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Route Comparison Conclusion

• Strong technical case in favour of Canal

• Toll Road option appears very attractive to start with however it is;

– Most Obstructed

– Least Practical (and in places impossible)

– At least 40% more expensive

• PJT II Operation of West Tarum Canal


Water Supply Sustainability

Jatiluhur Reservoir Water Balance

Projected Level-Storage Curves

11

Reservoir Water Balance Model

• Monthly reservoir inflows

• Irrigation demands for wet, normal, dry years

• Municipal and industrial demands

• Future reduction in irrigation demand

• Evaporation

• Abstraction for Bandung water supply

• Additional supply for Jatiluhur Pipeline

• Minimum operating level is 75m

• Target Min Operating Level is 87.5m

12

Reservoir Levels over 20 year Period assuming 2040 Conditions

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Years

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Reservoir Levels in 2040 with supplies to Bandung & Jakarta

• Planned supplies of 5m3/sec to Bandung and 15m3/sec to W Java & DKI

• By 2040 supply failures every 2 in 3 years

• Below 87.5m level 40% of months

• Max period below 87.5m level is 10 months

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Measures to improve reliability of supply to 95%

• Reduction in irrigation supplies of 30% by 2025

• Reservoir releases limited to agreed demands

• Reservoir operating rules to be reviewed

• PJT II - additional sedimentation monitoring

• Only minor impact expected from climate change


Water Treatment Process

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Water Treatment Process Principles

Easy to operate using, where

possible, local sourced

chemicals and materials

Safe access and maintenance

Allow for future upgrades to meet future legislation

Based on results from Mott

MacDonald testing regime

A robust treatment process to

cover foreseeable quality

envelope


Pipeline Design & Route

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Overview of Pipeline Route

Water Treatment

Plant Near Curug

River

Intakes

Buaran

Offtake

Jakarta (Cawang)

Tambun

Offtake

Rawalumba

Offtake

Puser Jaya

Offtake

Muara Karang

Offtake

N

Jatiluhur

Reservoir

Key

Jatiluhur to Jakarta Pipeline:

Additional Delivery Pipeline

Required:

Water Treatment Plant Site:

River Intake Site:

Not to Scale

Route follows Citarum River to Curug, then

follows West Tarum Canal to Cawang

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Pipeline Route Placement Options Design factors along the West Tarum Canal:

The presence of other utilities, particularly gas mains

The need to minimise social impact;

PJT II’s need for access to the canal edge for maintenance;

The impact on houses immediately adjacent to the pipeline route;

The avoidance of engineering obstacles where possible;

Minimising disruption to existing roads during construction;

The avoidance of permanent obstruction to existing roads.

Main Road Along Canal Secondary Access Road

NORTH BANK SOUTH BANK

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3 m3 m4 m3.5 m3 m8 m3.5 m

4 - 5 m

Canal

Verge

Access

Unmade

Road

Stockpile

Clear Area

Stage 1Stage 2Stage 3

Clear Area

28 m Corridor of Impact

17 m Working Corridor

3 m3 m

Canal

1 m2 m

9 m Working Corridor

12 m Corridor of Impact

Access

Unmade

Road

VergeAccess

A. Buried Pipe

B. Elevated Pipe

Grass

Verge

TrenchSafety

TrenchSafety

Above Ground Pipes – Impact Reduction

Working corridor for buried pipe installation compared

to working corridor for above ground installation

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Pipeline Route Social & Environmental Impact

Preliminary estimate, with buried pipes approx

2,400 structure needing demolition

Iterative design has reduced working room from

15m to 9m

Pipe route switched from side to side of canal

Final estimate of structures to be demolished: 36

Houses; 46 Shops; 72 Kiosks

Approximately 180 people to be re-housed

Minimal environmental impact over existing

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Existing Road

Canal

Houses

2.0m

1

2 3

1

8.0m 6.0m

Route – Common Position

A common position for pipeline is on wide

embankment on north side

Route on wide

north embankment

Gas Mains

Minimum clearance

under pipe when

access needed

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Artists Impression of all three

phases of 2m pipes;

West Tarum Canal; +40.000 km

Visual Impact

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Bulk Water Supply Delivery Locations

PDAM Kab Karawang

PDAM Kab Bekasi

PDAM Tirta Patriot Bekasi

Aetra

PALYJA

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Delivery Principles

• The supply from the Jatiluhur – Jakarta pipeline should be at a constant flow rate 24 hours a day;

• There should be a single, clearly identified, offtake and delivery location for each water company;

• The investor should construct a ground reservoir of sufficient capacity for each water company to store surplus water during periods of low daily demand;

• The supply from Jatiluhur should have a free discharge so that it cannot be influenced by downstream conditions, except that it should have a valve to prevent further delivery when the delivery reservoir is full;

• If sufficient pressure head available delivery could be into an elevated tank constructed by the water company;

• The water company responsible for distribution from the delivery reservoir.

DCR 5

Cawang

Pump

Station Buaran

WTP

Pulogadung

WTP

CDC

Pejompongan

WTP DCR 4

WTP

Muara

Karang

Delivery Pipeline to Aetra

Jakarta Existing Water Storage and Required Scheme Delivery Points


Indicative Project Costs

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Element Capex

Transmission System from Jatiluhur to Buaran US $ 229m

Transmission System from Buaran to PALYJA at Muara Karang US $ 57m

Transmission System from Buaran to Aetra (provisional sum) US $ 43m

Raw Water Intakes (2nr) US $ 24m

Water Treatment Plant (WTP) - Process US $ 85m

WTP - Waste Treatment and Disposal US $ 6m

WTP - General Site Requirement US $ 6m

Minor Items US $ 1m

SUB TOTAL Base Construction Costs US $ 451m

Engineering Contingencies US $ 68m

Construction Preliminaries US $ 89m

Detailed Design Fee US $ 23m

Construction Management Contractor Fee US $ 32m

SUB TOTAL Project Oncosts US $ 212m

TOTAL Project Costs US $ 663m

Indicative Project Costs

EXCLUSIONS: Taxes/Fees/Permits; Investors Costs; Scheme Risk &

Project Contingencies; Land Acquisition; Resettlement Compensation;

Outturn Cost Factor; Phases 2 and 3.

20120118102309.2012 01-16 cmea presentation jatiluhur

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