MWSP III (LAIBAN DAM PROJECT)

27 October 2009

PRESENTATION OUTLINE
Project Background
MWSSP III, Laiban Dam, Other Water Sources

Current Water Situation in Metro Manila

Demand Supply Gap, Angat Dam, the NEED for Laiban

The Laiban Dam Project Proposal

Technical Description Design Considerations, Facilities Project Activity Schedule Implementation Framework LARP Environment Assessment PROJECT COST

MWSP III IDENTIFIED WATER SOURCES

Marikina River Basin Kaliwa Basin Kanan Basin Umiray Basin Laguna Bay Taal Lake Pampanga River Calamba-Sta.Rosa Groundwater Marikina Groundwater

MWSP III PROJECT SELECTION

SOURCE
Kaliwa River (Laiban Dam) Marikina River Kanan River Umiray River (UATP to Angat) Laguna Bay (entire lake) Laguna Bay (eastern portion only) Pampanga River Taal Lake Calamba-Sta. Rosa Groundwater Lower Marikina Groundwater

YIELD (MLD)
1,909 1,280 3,170 777

Remarks
Most economic source (1987) Socially unacceptable (1987) Only after Kaliwa (transbasin) Implemented 1998, to undergo rehab, additional source (190 MLD) Pollution control measures before exploitation for water supply Requires 1.95 m dike in the bay (1992) Pumping cost energy relatively high Not recommended due volcanic hazard For local supply only For local supply only

2,592 1,782 2,592 864 190 130

STUDY ON WATER RESOURCES DEVELOPMENT FOR METRO MANILA (JICA, 2003)

UMIRAY Transbasin ANGAT DAM

Kanan Dam No. 1 Kanan Low Dam Agos Dam

Laiban High Dam

Laiban Low Dam

Kaliwa Low Dam

Water Sources for Metro MANILA Estimated Yields (Capacities)

Scheme Capacity (MLD) Source Combination
1 2 3 4 5 Laiban Dam+Kanan No. 2 Dam Kaliwa Low Dam + Agos Dam Agos Dam Alone Laiban Dam + Agos Kaliwa Low Dam + Kanan No. 2 Dam

Stage 1
1,803 (550)/0 1,500 1,830 (550)/290

Stage 2
3,310 3,000 1,500 1,500 3,310

Total
5,110 3,000 3,000 3,330 3,600

*based on Nippon-Koie/NJS Study, 2003

Stage 1 Cost and Commissioning Dates, Water Sources for Metro MANILA
No Source Combination Stage 1 Cost US $M
804 529 1,071 807 529

Capacity Stage 1 MLD Commissioning Date

1,830 550 1,500 1,830 550 2015 2012 2017 2015 2012

1 2 3 4 5

Laiban Dam+Kanan No. 2 Dam Kaliwa Low Dam + Agos Dam Agos Dam Alone Laiban Dam + Agos Kaliwa Low Dam + Kanan No. 2 Dam

*based on Nippon-Koie/NJS Study, updated to 2005 prices by SKM

The 2005 MWSS Study

the Laiban Dam + Kanan Dam has until now been recommended to be the priority combination among options already studied due to the higher yield, lowest unit development cost and higher elevation Considerable works have been done for Laiban Dam
FS conducted in 1979 DE done in 1980 Construction of diversion tunnel completed in 1984 Plan was reviewed, updated in 1997, 2000, 2007 The original plan from the headworks to the water treatment plant remain unchanged

PROJECT PROFILE LAIBAN DAM

The Project is a multi-purpose development: it will provide a water supply of 1,950 MLD; it will also provide a 25 MW hydropower plant. It will become the second major source of water supply for Metro Manila, after Angat Dam. A 113-meter high dam will be constructed to utilize the Kaliwa River Basin in Tanay, Rizal. Kaliwa River basin is situated east of Metro Manila and drains a mountainous watershed of about 28,000 hectares on the slope of Sierra Madre Mountains.

MWWS Demand-Supply Projections (2000)

12000 10000 8000
MSW III-3(650)

MLD

KANAN (3200)

6000 4000 2000 0

300 MLD MSW III-2(650) UATP (800) MSW III-1(650)

1990

1995

2000

2005

2010

2015

2020

2025

2030

MWSP III, Agos River Pre-FS, 2000

Year

2035

MWSS
Covers the NCR (17 towns and cities); cities); 5 in Rizal and 6 in Cavite Total Service Area of 1,940 sq km
1,400-MWCI 400 540-MWSI 540-

Population in the Service Area, 14 Million Served Population of about 9 Million Angat River Umiray Sum-ag SumGroundwater 3,200 MLD 800 MLD 190 MLD 90 MLD

UMIRAY RIVER

ANGAT RESERVOIR

9 CMS 70 CMS

IPO DAM

46 CMS NIA

4,000 MLD (UMIRAY, 4,480 ANGAT, IPO) 900 MLD CAPACITY

LA MESA TREATMENT PLANT NO. 1

MWSS Existing Water Supply System

3 Tunnels

LA MESA TREATMENT PLANT NO. 2

)
5 Aqueducts
BIGTI SETTLING BASIN

1,500 MLDLA MESA RESERVOIR CAPACITY

BAGBAG RESERVOIR

BALARA TREATMENT PLANT NO. 2

380 MLD, La Mesa

BALARA TREATMENT PLANT NO. 1

1,130 MLD SAN JUAN CAPACITY RESERVOIR

TO DISTRIBUTION SYSTEM

470 MLD CAPACITY

TO DISTRIBUTION SYSTEM

Inflow from Umiray Angat Transbasin Tunnel

ANGAT DAM releases thru main turbines releases thru auxiliary turbines
ANGAT DAM SPILLWAY DIKE

BUSTOS DAM (NIA) 28,000-30,000 has

di re ct io n

IPO DAM 3 tunnels BICTI STILLING BASIN

6 aqueducts

IPO DAM

La Mesa Treatment Plants 1 & 2

LA MESA DAM Balara Treatment Plants 1 & 2

of

flo

MWSS DEMAND-SUPPLY SITUATION DEMAND9,000 8,000

Projected Demand (MLD)

7,000

Latest Water Demand Update

6,000
JICA STUDY, 2001 MWSS Projections

5,000 4,000 3,000 2,000 1990 1995 2000 2005 2010 Year 2015 2020 2025 2030
SumSum-ag River Source

Umiray Transbasin Angat Dam + GW sources

MWSS FRANCHISE AREA TOTAL POPULATION*

2008 2010 2015 2020 2025 14.578 Million 14.894 Million 15.937 Million 16.962 Million 18.001 Million
Service (sq.km) MWSI (West) MWCI (East) TOTAL
1MWSS

MWSS Demand Variations

1.80 1.60 1.40 1.20

ADD Ratio

1.00 0.80 0.60 0.40 0.20 0.00

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00

Time

* Based on NSO projections

Population

Water Production (MLD) 20071 NRW 1,513.04 354.16 1,867.20 Total 2,293.37 1,377.97 3,671.34

Served (M) Billed Volume 8.1 5.3 13.4 780.33 1,023.81 1,804.14

540 1,400 1,940

service Quarterly Service Performance Information (QSPI). Figures based on plant production and do not reflect conveyance losses through Angat, Ipo and eventually to the WTPs.

Angat Dam Spillway Main Dike

PAST WORKS RELATED TO THE ANGAT HYDRO PLANT SAFETY

NPCs Report, 1988 The JICA Study, 1989 EDCOPs/T&TIs Dam Safety Review, 2001 MWSS Engineering and Geological Report on Angat MWSS Dam and Dike Safety Evaluation, 2002 (NZ assisted) PHIVOLCS/USGS Joint Study, 2000

Ipo Dam

Based on the USBRs SEED Criteria, both the Angat Dam and Main Dike are rated CONDITIONALLY POOR*

* A potentially dam safety deficiency is recognized for unusual loading conditions, which may realistically occur during the expected life of the structure. CONDITIONALLY POOR may also structure. be used when uncertainties exist as to critical analysis parameters, which identify a potential dam safety deficiency; further investigations and studies are necessary. deficiency; necessary.

ORIGINAL PROJECT DESIGN (1983)

Headworks
LAIBAN Dam (113 meters; MaxWL=270 m; MinWL=237 m: Max Q = 4,885 CMS, Bottom Outlet, Elev 187, 300 CMS) Twin multi-level intakes; one-intake for Kanan 3.2 dia, 7.8 km tunnel, concrete-lined 3.2 dia.,4.0 km tunnel, steel pipeline 2.7 m dia., 1.8 km steel-lined tunnel (with surge shaft and adit leading to powerplant

Hydropower Station (30 MW)

With by-pass to Pantay Creek to Laguna Lake (Morong)

Treatment works
3 phase development (800 MLD), 2 CWRs 50 ML

ORIGINAL PROJECT DESIGN (1983) -contd

Distribution System
Waterways from Pantay Treatment Plant to Cogeo Reservoir (3.2 m dia x 1.2 km pressure pipeline, 3.6 m dia x 6.9 km of concrete-lined tunnel) Service reservoirs at Cogeo, Phase 1-120 ML, and 60 ML at Capitol Pressure control station at Mayamot Pumping station at La Mesa, 160 MLD for higher north 44 km of 2,000 to 2,600 mm dia trunk mains from Cogeo to south and La Mesa pumping station 158 km pipelines, 300 to 1,500 mm dia, and secondary distribution including 583,000 service connections all phases

2006 Estimated Project Cost (MWSS Study) Project Components

Headworks (dams, tunnels etc.) Treatment Plant Distribution System Environmental & Watershed Management Resettlement Right-of-way Indirect Costs (Engg., Taxes, Contingencies, etc) IDC and front-end fee TOTAL

Cost (Php M)
13,060.00 3,254.00 9,951.00 90.00 7,417.00 2,651.00 64.00 5,560.00 47,928.00

MWSS Total Expenditures To Date for LAIBAN DAM Description Before MWSS Privatization: (FS, Detailed Engg., Diversion tunnels, partial land acquisition, and other pre-construction activities) After MWSS Privatization: a) (Review/Updating of documents including preliminary resettlement planning), year 2001 -------------------------------------------------- 36.00M b) Technical review & assess tender docs for construction, year 2006-2007 ---------- 24.00M c) Further geological investigation at damsite (on-going) -------------------------------------5.00M TOTAL Amt
(Php M)

690.00

65.00

755.00

LAIBAN DAM Technical Considerations

Dam Design compliant to ICOLD standards, also referred to USBR and US Corps of Engrs
Philippine Fault (Infanta segment; Digdig & Bondoc Peninsula) West Valley Fault (Marikina Fault) Slopes of the dam is at 1.5:1, just like that of Angat Main Dam Concrete Faced Rock-filled Dam (CFRD) Dam designed to withstand extreme events (PMF, MCE)

LAIBAN DAM Technical Considerations

Tunnels and Waterways Design
Tunnels (3 segments, 14.65 km, Tunnels 1 and 2 follow original alignments) Pipeline (or Tunnel ??) expected to cross the West Valley Fault Geology dictates whether conventional drill and blast or use of TBM would be practicable in specific tunnel sections; also the need for lining. Tunneling activity is in the critical path

Case 1 M = 8.0 R = 20 km PGA = 0.41 g PGAR = 0.25 g

Case 2 M = 8.2 R = 20 km PGA = 0.43 g PGAR = 0.26 g

Source: JICA Study, 2003

LAIBAN DAM Technical Considerations

(Reservoir Area Limestone Formation)
Based on the results of the geologic mapping, majority of the limestone bodies investigated within the reservoir area may not have major impact/s on the designated reservoir water level of 270 masl except the one located along the bank of Lenatin River which is about 1 km upstream of the proposed dam site. - Geotechnical Investigation for Laiban Dam Project (Laiban Dam Limestone Project, April 2008) Considering the size of the dams catchment area, it is very unlikely that the water that is lost will find itself exiting into another drainage basin. It is possible that the water flows back into the river farther downstream. - EDCOP/BERGS Geological Report, November 2008

LAIBAN DAM PROJECT Facilities

Dam and Headworks
113 meter high dam, CFRD Twin Intakes (Laiban + Kanan) Reservoir and Watershed Access Roads 22.5 CMS (1,950 MLD) flow Operating levels (max. 270 m; min. 235 m) PMF, 3,702 CMS Seismic consideration, 0.4 g PGA

LAIBAN DAM PROJECT Facilities

Raw Water Conveyance
Tunnel 1, 7.8 km total
3.2 m dia concrete-lined section, 7.5 km 2.7 m dia steel-lined section, 300 meters

Pipeline 1, 4.0 km, 3.2 m dia. Tunnel 2, 1.8 km, 2.7 m dia., steel-lined
With headrace and surge tank

Pantay Hydropower Plant

25 MW Capacity, 2 x 12.5 MW Francis Turbines (by-pass provided)

LAIBAN DAM PROJECT Facilities

Water Treatment Plant
Conventional Treatment facility 2,400 MLD capacity

Treated Water Conveyance Facilities

Pipeline No. 2, 5 km, 3.2 m dia. Tunnel No. 3, 5 km, 3.6 m dia.

Storage Facilities, Pump Station, Pressure Control Station

Antipolo Reservor, 20 ML Taytay Reservoir, 120 ML Antipolo Pumping Station, 110 MLD capacity Taytay Pressure Control Station

LAIBAN DAM PROJECT Facilities

Trunk Mains, River Crossings and Off-take Points
Trunk Main from Taytay to Pasig, along Ortigas Extension to Dr. Sixto Antonio Drive, 11.8 km, 2.2m dia 1 river crossing, Marikina River Trunk Main from Taytay to SLEX, through C-5/C-6 alignments, 14.5 km, 3.2 m dia 4 river crossings Marikina River, Antipolo, Pasig, Taguig 4 Measurement Points

PROJECT FACILTIES
LAIBAN DAM PROJECT

PANTAY POWER HOUSE 25 MW Francis Turbines PANTAY WTP 2400 MLD Cap. ANTIPOLO 20 MLD RESERVOIR & 111 MLD cap. PUMPING STATION TAYTAY120 MLD RESERVOIR
P

HEP

metering point
TAYTAY PRESSURE CONTROL STATION INTAKE STRUCTURES

PASIG

SLEX metering points

LAIBAN DAM PROJECT PROJECT COST

Project Costs to be updated to reflect:
Current materials, labor and equipment costs Contractual arrangements (EPC) CPIs Available, verified and validated quantities especially for major work items

Derived and/or updated unit costs are to be compared with existing, valid and actual construction costs in various on-going jobs in the Philippines as well as in similar, overseas projects

LAIBAN DAM PROJECT PROJECT COST COMPONENTS

CONSTRUCTION (DIRECT) COST LARP ENVIRONMENTAL INDIRECT COST (engineering, supervision, management & administration, contingencies) TAXES AND DUTIES

LAIBAN DAM PROJECT Comparative Features & Costs

Past Works Original, 1983, Electrowatt, Renardet Electrowatt,Renardet, 1997 GHD, Renardet, ISSI, PERTCONSUL, 2000 Daruma, Norconsult 2007 Total Cost P 10.5 B (USD 400 M) P 21.93 B (USD 828 M) P 31.91 B (USD 747 M) P 47.55 B (USD 951 M) LARP 257 families (P 990 M) 3,000 families (P 3,304 M) +3,000 families (P 4,502 M) 4,413 families (P 15,170 M) Design Q 22 CMS (1,900 MLD) 22 CMS (1,900 MLD) 22 CMS (1,900 MLD) 21 CMS (1,814 MLD) Power 30 MW (1 unit) 30 MW (2-15 MW) 30 MW (2-15 MW) 25 MW (2-12.5 MW)

LAIBAN DAM PROJECT SCHEDULE

PHASE 1 Proposal Preparation
project update proposal preparation

PHASE 2 Contract Negotiation

proposal evaluation negotiation competitive challenge award of project

PHASE 3 Planning & Organizing

organization of JV, project company government approvals/permits off-take agreement financial closure tendering

PHASE 4 Construction
LARP, ROW, entry permits EPC mobilization construction activities commissioning

PHASE 5 Operations
post construction operational and occupancy permits operations treated bulk water supply; power supply

LAIBAN DAM PROJECT Implementation Framework

Project to be implemented through the Corporate Joint Venture scheme, EO 423, 30 April 2005, in accordance with NEDA Guidelines on JV Agreements The Proponent JV Agreement between The Proponent and MWSS The JV Partners (Proponent and MWSS) shall organize a Project Company 90% of the equity shares to be subscribed by the Proponent, remaining 10% by MWSS

LAIBAN DAM PROJECT -LARP

An instrument to mitigate adverse impacts caused by dislocation, loss of houses, assets, livelihood and social disintegration LARP addresses of both IP and non-IP families Further validation shall be done during the final technical design phase of the project in order to cover all issues that will be raised by affected persons (APs) and affected families (AFs) Important underlying principle the quality of life offered by LARP with the project should be equal or better than without the project

LAIBAN DAM PROJECT -LARP

Objective
To ensure just compensation and peaceful and effective resettlement of the households/families to be affected by the project. These include: 1. AFs whose land and properties will be directly submerged by the dam; 2. AFs who will be at risk with the operation of the dam; 3. AFs who will be affected by the construction of other facilities of the project like pipes and water treatment plant (WTP) and 4. AFs in San Ysiro who will be affected by the relocation of families from Tanay, General Nakar and Antipolo.
AF = affected families

KALIWA WATERSHED (28,000 has.)

DARAITAN

MADILAY-DILAY

AREA OF WATERSHED = 28,000 HAS

DAM
KALIWA RIVER

Diversion Tunnel

FLOW

MAMUYAO

LIMUTAN RIVER

LENATIN RIVER

LAIBAN STO.NIO

KUYAMBAY SAN ANDRES

TINUKAN STA. INES

CAYABU

INTAKE

PROJECT IMPACT
BGY. STA. INES AF=474

FLOODING OF 7 BGYS. IN TANAY AND 0NE IN GEN. NAKAR

BGY. LIMUTAN AF=390

BGY. MAMUYAO AF=323

BGY. STO. NINO AF=318 BGY. TINUKAN AF=290 BGY. CAYABU AF=175 BGY. LAIBAN AF=720

BGY. SAN ANDRES AF=423

BGY. DARAITAN 591

Source: DENR

Parcel 1

Proposed Resettlement Site in San Ysiro, Antipolo City as proclaimed under Proclamation No. 2480 Issued on Jan 26, 1986 Area (hectares) MWSS Property 1,507

Parcel 4
MWSS Titled Property Lot 1 = 232 hectares Lot 2 = 1,275 hectares Total = 1,507 hectares

Parcel 2

Parcel 1 Parcel 2 Parcel 3 Parcel 4 Total

887 360 379 1,291 4,424

Parcel 3

LAIBAN DAM PROJECT Affected Barangays, Impacts and Mitigation Measures

Affected Barangays (i) Tanay, Rizal Laiban San Andres Cayabu Sto. Nino Tinucan Mamuyao Type of Impact/Recommended Action Proposed Dam Site To be submerged/for relocation To be submerged/for relocation To be submerged/for relocation To be submerged/for relocation To be submerged/for relocation To be submerged/for relocation will not be submerged To be indirectly affected, will have access problem will not be submerged Risk area incase of flooding and dam break, originally proposed for relocation Proposed Measures to avoid/minimize impacts

Sta. Inez

Will not be included for relocation Will not be included for relocation

Provide access to San Ysiro, the relocation site Installation of early warning mechanism and monitoring system to monitor status of dam during inclement weather

Daraitan

LAIBAN DAM PROJECT Affected Barangays, Impacts and Mitigation Measures

Proposed Measures to avoid/minimize impacts

Affected Barangays (i) Gen. Nakar, Quezon

Type of Impact/Recommended Action

Lumutan

within the Kaliwa Watershed will not be submerged, but will be indirectly affected Lack of access to resources/market) Existing road link is only through Brgy. Sta. Inez No existing road network to Gen. Nakar ( proposed for relocation)

Will not be included for relocation

Improve existing access to Sta Inez and then access to San Ysiro, the relocation site

LAIBAN DAM PROJECT Affected Barangays, Impacts and Mitigation Measures

(i) Antipolo, Rizal Proposed Water Treatment Plant (WTP ) Site of the treatment plant, families to be displaced ( proposed to be relocated ) Displacement of current settlers, loss of access to farm production and losses on structures, and crops/trees, if movement is done on current land use and properties and assets

Barangay Pantay

San Ysiro

Minimal movement of existing structures/properties Identify sites that are not occupied by current settlers within the 4,440 hectares to be used for resettlement and facilities to be established based on the physical development plan that will be prepared.

Project Affected Families (updated)

LAIBAN DAM PROJECT LARP

Proposed Resettlement Package and Compensation

OPTION 1 Outright compensation for APs/AFs OPTION 2 Resettlement Assistance of:

30 sq meter house, single detached 240 sq meter home lot 5,000 sq meter farm lot Compensation for lots, structures, fruit and permanent trees Other assistance packages on livelihood, employment, capacity building

LAIBAN DAM PROJECT LARP Budget Components

Land Acquisition Cost/Compensation
Farm & home lots, structures, permanent trees, fruit trees

Resettlement Cost (San Ysiro)

Development cost, housing units, community facilities, etc.

Other Costs & Contingencies

Training, services

LAIBAN DAM PROJECT - EIA

DENR Requirements

ECC Amendment Environmental Performance Report and Management Plan Environmental Impact Statement

- Environmental Compliance Certificate

ECC issued by NEPC August 18, 1986
Condition 1 2 3 4 5 6 7 8 9 Particulars Implementation of biological controls against malaria and other insect related diseases in the project area Implementation of epidemiological monitoring plan Establishment of micro-seismic monitoring centers microImplementation of submitted resettlement plan and commitments Provision of assistance to displaced minorities in terms of livelihood opportunities Conformance with Alternative 3 relative to sludge disposal Formulation and establishment of contingency plans and warning system Implementation of measures to minimize soil erosion of the quarried areas and riverbanks Mitigating measures on air, water and noise pollution.

LAIBAN DAM PROJECT Environmental

Conduct of EIS Site Scoping, Public Consultations, Public Hearing
Land use, flora & fauna, reservoir & watershed, geology & hydrogeology, hydrology, air, noise, etc.

Environmental Impact Sampling & Study ECC Application & DENR Review EIS Consultancy Cost (other related studies, etc.)

QUESTIONS . . . CLARIFICATIONS . . . DETAILS . . . . .