View the MWSS Laiban Dam Project Information Sheet

PROJECT PROFILE
• The Project is a multi-purpose water supply
and power project;
• The second major source of water for Metro
Manila, after Angat Dam.
• Provides 1,900 MLD of water & 25 MW power.
• A 113-meter high dam on the Kaliwa River in
Tanay, Rizal.
• Situated east of Metro Manila on a
mountainous watershed of about 28,000
hectares in the Sierra Madre Mountains.

Angat Dam
Kanan Dam
La Mesa Dam
To Distribution System
Cogeo Reservoir
Laiban Dam
Pantay WTP
Laguna de Bay
PROJECT LAY-OUT

PROJECT COMPONENTS
Pantay
2400MLD
WTP
Resettlement Site
Taytay Res =
120 ML
Antipolo
Res= 20ML
25 MW
HEP
Dam
PS
Tunnel
Conveyance
line
The Project:
• 1,900 MLD additional supply
• Dam height: 113M
• Affected Families: 4,413
• Project cost – P 48B

MAJOR WORKS UNDERTAKEN
• FS and detailed engineering for the Project were already
completed in 1980’s including the construction of the
diversion tunnels
• Some of the affected families were already compensated of
their above-ground improvements and several titled
properties have also been acquired
• The Project including the supposed relocation was
deferred in 1989 in lieu of an equally important projects,
the Angat Water Supply Optimization Project (AWSOP)
and the Umiray-Angat Transbasin Project (UATP)
• Several reviews & updating were conducted to prepare the
Project for tendering and eventually for funding either
thru Build-Operate-Transfer (BOT) or other financing
scheme.

ENVIRONMENTAL CONDITION
• Kaliwa watershed area
is 28,000 has., of
which 70% is in Tanay

ENVIRONMENTAL CONDITION
THE VALLEY OF LENATIN RIVER,
WHICH FORMS THE WESTERN SIDE
OF THE CATCHMENT, IS
CHARACTERIZED BY SPARSE
VEGETATION CONSISTING OF
BUSHES AND SCATTERED TREES.
LIMUTAN WATERSHED HAS
MODERATE TO INTENSIVE
FOREST COVER AND VIRTUALLY
INACCESSIBLE

ENVIRONMENTAL CONDITION
• Reduction of forest cover due to small scale
logging, grazing and kaingin have continued in
various parts of the catchment basin
• Population has increased and new houses and
government structures are existing and being
built within the watershed
Residential Structures
Barangay Centers
2-storey School Bldg.

Mitigating Measures on
Environmental Impacts:
• Organize a Multi-Partite Monitoring Team
(MMT) that will monitor progress of work
and compliance with ECC and
Environmental Management Plan
• Allocate an Environmental Guarantee Fund
• Implementation of a Watershed
Management Plan with active participation
of the local communities

BGY. STA. INES
AF=474
PROJECT IMPACT
FLOODING OF 7 BGYS. IN
TANAY, 1 IN GENERAL
NAKAR, PANTAY WTP &
SAN YSIRO RELOC SITE
(4,413 affected families)
BGY. MAMUYAO
AF=323
BGY. LIMUTAN
AF=390
BGY. TINUKAN
AF=290
BGY. CAYABU
AF=175
BGY. STO. NINO
AF=318
BGY. LAIBAN
AF=720
BGY. SAN ANDRES
AF=423
BGY. DARAITAN
AF = 591
Source: DENR

PROJECT IMPACT
• Erosion of sediments
• Irreversible loss of agricultural resources
and scenic spots (Sta. Ines Falls, Sangab
Cave)
• Destruction or interference with habitats
• Impairment of cultural areas/monuments
and ancestral domains of indigenous
people (IPs)
• Relocation of settlers

Indicative Project Schedule
ACTIVITY
2007 2008 2009
1 2 3 4 1 2 3 4 1 2 3 4
2010
1 2 3 4
2011
1 2 3 4
2012
1 2 3 4
2013
1 2 3 4
2014
1 2 3 4
2015
1 2 3 4
Pre-Construction Activities
(LARP, ECC, LGU endorsement, etc)
Fund Sourcing (BOT)
Contracting Phase
Land Acquisition & Resettlement
(including livelihood assistance)
Construction
Commissioning
NEDA-ICC Approved Project Cost = PhP 47.93B

Current Status (as of 15 June 2008)
• Since this Project was cancelled under the China Loan, MWSS is
now pursuing other mode of procurement either solicited or
unsolicited proposals. In fact, Memoranda of Understanding
(MOUs) were already signed by MWSS with several interested
proponents for the conduct of due diligence on the Project. At
present, an American firm, CalEnergy International, is presently
doing due diligence and soon to submit its proposal.
• Meantime, the following pre-construction activities is in progress:
- Processing of the new ECC of the Project;
- Processing of the Free and Prior Inform Consent (FPIC)
clearance from the National Commission on Indigenous People
(NCIP); and
- Continuing dialogue/meeting with the LGU particularly the
municipality of Tanay, Rizal and the affected barangays relative
to the LGU’s endorsement of the Project.

NEDA-ICC Approved Project Cost Estimate
Project Components
Headworks (dams, tunnels etc.)
Treatment Plant
Distribution System
Environmental & Watershed
Management
Resettlement
Right-of-way
Indirect Costs (Eng’g., 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
6,306.00
5,560.00
47,929.00

Parcel 1
Proposed Resettlement
Site in San Ysiro, Antipolo
City as proclaimed under
Proclamation No. 2480
Issued on Jan 26, 1986
Area
(hectares)
Parcel 4
Parcel 2
MWSS
Property
1,507
MWSS Titled Property
Lot 1 = 232 hectares
Lot 2 = 1,275 hectares
Total = 1,507 hectares
Parcel 1
Parcel 2
Parcel 3
Parcel 4
887
360
379
1,291
Parcel 3
Total
4,424

PROJECT LOCATION
PROJECT LOCATION
Laiban Dam Site
(about 70 kms road
distance from MWSS)

Project Affected Families
8 mountain barangays
in Tanay including Brgy
Daraitan
Brgy. Limutan, Gen.
Nakar, Quezon
San Ysiro, Antipolo City
(relocation site)
Pantay Water Treatment
Plant (Antipolo City)
1984 Census
2,372
13
182
-
2006 Census
3,314
390
643
66
Total
2,567
4,413

Parcel 1
Proposed Resettlement
Site in San Ysiro, Antipolo
City as proclaimed under
Proclamation No. 2480
Issued on Jan 26, 1986
Area
(hectares)
Parcel 4
Parcel 2
MWSS
Property
1,507
MWSS Titled Property
Lot 1 = 232 hectares
Lot 2 = 1,275 hectares
Total = 1,507 hectares
Parcel 1
Parcel 2
Parcel 3
Parcel 4
887
360
379
1,291
Parcel 3
Total
4,424

Total Expenditures To Date:
Description
• Before MWSS Privatization:
(FS, Detailed Engg., Diversion tunnels,
partial land acquisition, and other preconstruction
activities)
• After MWSS Privatization:
Amt (PhP M)
690.00
65.00
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
755.00
NEDA-ICC approved Project Cost (2007) = PhP 47.93B

Million Liters Per Day
10000
9000
8000
7000
6000
5000
4000
3000
Water Supply-Demand Projection
Present Water Demand
(2007) = 5,200 MLD
Sumag(188mld)
+ Wawa (50mld)
2005
2006
2007
2008
Laiban Phase 1 (1220 mld)
= 538 mld
+ 300mld Treated Bulk Water
2009
2010
2011
2012
2013
2014
2015
2016
Laiban Phase 2 (610 mld)
Present Water Supply from Angat = 4,000 MLD
2017
2018
2019
2020
Kanan Phase 1 (1090 mld)
Kanan Phase 2 (1090 mld)
Year
Supply Demand Present Supply (4000 mld)
Kanan Phase 3 (1090 mld)
2021
2022
2023
2024
2025
2027
2029
2031
2034
2036
2038
2040

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.NIÑO
KUYAMBAY
SAN ANDRES
STA. INES
TINUKAN
CAYABU
INTAKE

PROJECT LOCATION
Proposed Relocation Site
San Ysiro, Antipolo City
Special Relocation Site declared
under Proc. #2480 in 1986
Marcos Highway
Proposed Laiban Dam located about
70 kms road distance from MWSS

Project Lay-out
San Ysiro Reloc Site
4,400 hectares
Completed
Diversion tunnel