Developing Resilience to Climate Change and Flooding:

The DOST 7 Integrated Storm Water Management (ISWM) Project in Cebu

by Rene Burt Llanto 1

1 Rene Burt N. Llanto is currently the Regional Director of the Dept. of Science and Technology – Region VII. This paper is presented during the Regional Workshop on Climate Change and Urban Flooding on March 19-20, 2013, Daegu, Republic of Korea.

1 Rene Burt N. Llanto is currently the Regional Director of the Dept. of Science and Technology – Region VII. This paper is presented during the Regional Workshop on Climate Change and Urban Flooding on March 19-20, 2013, Daegu, Republic of Korea.

Outline of Presentation

1. National Initiatives on Climate Change and Flooding.

2. Project Components

3. ISWM Phase II

4. Issues on the Development of Water Infrastructure.

5. Conclusions

6. Recommendations

National Initiatives on Climate Change and Flooding

Climate Change Act of 1999

National Framework Strategy on Climate Changen 2011-2022

Committed towards ensuring and strengthening natural ecosystems and human communities to climate change, highlighting the relationship between climate change mitigation and adaptation.

National Climate Change Action Plan

VISION

“A climate risk-resilient Philippines with healthy, safe, prosperous and self-eliant communities and thriving and productive ecosystem.’

Goal

‘To build the adaptive capacity of communities and increase the resiience of natural ecosystems to climate change, and optimize mitigation opportunities towards sustainable developmemt.”

Philippine National Framework for Climate Change

Complies with the United Nations Framework Convention on Climate Change (UNFCCC)

National Disaster Risk Reduction and Management Plan

RA 10121, s2010 “An Act Strengthening the Philippine Risk Reduction and Management

System

Philippine Disaster Risk Reduction and Management Committee (DRRNC)

Local Risk Reduction and Management Plans (Province, City, Municipality and Barangay)

Command Structure of the Disaster Risk and Rehabilitation Management Committee (DRRMC) and Emergency Operations Center (EOC)

National Operational Assessment of Hazards (NOAH)

Components

1. Hydromet Sensors Dev’t2. DREAM-LIDAR3. FloodNET4. Hazards information

media,5. Landslide hazards mapping6. Doppler System Dev’t 7. Storm Surge Inundation

Mapping.

DREAM LIDAR (Disaster Risk Exposure Assessment for Mitigation – Laser Imaging and Detection Airborne Radar)

DREAM LIDAR

DOST

Doppler Radar Stations in the Philippines

Virac

Aparri

Baler

Baguio

SBMA

Doppler Radar Program

Hinatuan

South Cotabato

CEBU

Guiuan

Tagaytay

OP/CALAMITY FUND

PAGASA 2007 GAA

JICA-PROPOSED

UPGRADING BY DOST-GIA FUND

FUTURE PLAN

15 in 2015

QUEZON

BUSUANGAILOILO

ZAMBOANGA

LEGEND:

Basco

FLOOD NET

Cagayan (1983)

Agno (1983) Pampanga

(1973)

Bicol (1983)

Angat (1986)

Binga/ Ambuklao

(1992)

Magat (1992)

Pantabangan (1986)

Pasig-Marikina

(1993)

San Roque (2002)

Telemetered River Basins &

Dams

Automatic Weather Station (AWS)and Automatic Rain Gage (ARG)

Wind Profilers

Meteorological Buoys

Enhance monitoring system

Disclaimer: Rainfall threshold values are arbitrary and may vary depending on the area of concern. These will be refined as soon as more data become available.

HEAVY RAINFALL WARNING SYSTEM

RAINFALL VALUES (mm) MEANING WARNING

Rainfall of 7.5 to 15 mm per houris expected to fall and mostlikely to continue for the next 3hours.

Community

FLOODING is POSSIBLE in low lying areas and near river channels

Rainfall of more than 15mm up to30mm within 1 hour has fallen orexpected to fall and most likely tocontinue or if continuous rainfallfor the past 3 hours is more than45mm to 65mm

Community

FLOODING is THREATHENING in low lying areas and near river channels

Rainfall of more than 30mm within1 hour has fallen or expected tofall and most likely to continue orif continuous rainfall for the past 3hours is more than 65mm

Community

SERIOUS FLOODING is EXPECTED

Take necessary precautionary measures

Emergency

You can simply use the following guidance for each color:

Be aware

Be prepared

Take action

Integrated Storm Water Management (ISWM) Project in Cebu (Phase I)

Korea Institute of Construction Technology

EREDE CO., LTD.

DOST

- Cooperation between Water Security Section of ESCAP and the Department of Science and Technology Region VII (DOST VII) to promote awareness and advocacy on eco-efficient water infrastructure development. Other partners are KICT and EREDE Co. Ltd..

The Project

“INTEGRATED STORM WATER MANAGEMENT IN THE PHILIPPINES”

Objective of the Project

Strengthen the capacity of government officials in Region VII, Philippines to promote eco-efficiency of water infrastructure

Key Outputs of Project

• Establishment of a model on integrated storm water management system in DOST VII.

• Development of a replication strategy

• Improved capacity building through trainings and a workshop

DOST 7 Compound, Lahug Cebu City, Philippines

Project Site

`

Storm water and rain water storagetank

Stormwater trench (open canal)

Rainwater (roof)

DOST 7 Integrated Storm Water Management Development Plan

DOST 7 Building Site Development Plan

DOST 7 Bldg.

Photo of the DOST VII Regional Office

The New DOST VII Building at Sudlon, Lahug, Cebu City, Philippines.

The Atrium inside the new DOST VII Building.

Flowchart of the ISWM System in DOST VII, Cebu Philippines

Major Components of the Cebu ISWM Facility

Rainwater Collection. Rainwater from roof and storm water from porous surface of roads.

Primary Rainwater Treatment (Green Filter). First flushing; initially removes contaminants/pollutants.

Micro-membrane Filtration System (MF System).Micro-membranes to reduce microbial and particulate pollutants.

Integrated Rainwater Administration System. Wireless

monitoring devices, controllers for pumps/valves, server.

Rainwater Drainage against Emergencies. System to divert overflows and excess water.

Reuse Water Treatment System. Uses advance biological

treatment processes that eliminate organic and nitrogen compounds.

Chlorinator. Basic chlorine treatment system for treated grey water to further remove contamination.

The Roof Top Rain Water Tank containing the rain water ready for utilization in toilets and for washing.

Construction of the 2 x 60 ton Rain water and Storm water Storage Tanks.

The 9 ton Treatment Tank of the ISWM System

Primary Filtration System (Green Filter)

The septic tank with the membrane to treat wastewater.

The Micro Filtration System in the Machine Room of the ISWM System in the DOST 7 Building, Lahug, Cebu, Philippines

Chlorinator

System components (pumps, tanks, piping, computers, data acquisition and control, remote administration system etc) of the ISWM System Machine Roomr

Plants and crops watered through the ISWM system.

Integrated Storm Water Management (ISWM) Project in Cebu (Phase II)

Korea Institute of Construction Technology

EREDE CO., LTD.

DOST

ISWM Phase II

Phase II of the project was started in 2011 and is on its way to completion.

Two project sites are selected: the Philippine Science High School – Argao Campus in Argao, Cebu (80 km south of Cebu City), and the Zapatera Elementary School in Cebu City.

Development of designs for Philippine adapted green schools are prepared to convince education decision-makers to Introduce green growth in basic education.

Several forums and symposia were conducted on ISWM.

Zapatera Elementary School in Cebu City

Philippine Science High School – Argao Campus, Argao Cebu

Issues on Water Quality and Infrastructure Development in Cebu

Over-extraction of Aquifers. Saline wedge movement into mainland where chloride level now exceeds 500 mg/l .

Urbanization and Increasing Demand. Decrease in recharge capacity, rapid increase in demand, wastewater generation.

Non-utilization of Rainfall. City created laws requiring new buildings to construct cisterns, but these are not used.

Untreated Discharge of Sewage. No proper sewage treatment systems in the City and sewage dumped into rivers.

Flooding. When rains come, flooding is experienced in low lying areas of the city and near rivers.

Conclusions

>The IWSM system contributes well to developing resilience to climate change and urban flooding.

> It provides clean water.

> It prevents flooding.

> It treats waste water.

> The ISWM system is a good teaching tool for science and green growth.

> The system with its low maintenance and versatilen control system serves as a good model for replication in other regions of the Philippines.

> Savings on water is significant.

> The benefit cost analysis at present is limited to economic considerations because environmental aspects are not yet compelling as implementation of environmental laws are lightly enforced.

Recommendations

> There is a need to introduce uninterrupted power systems preferably using renewable sources (solar, wind, biogas, etc.

> There is a need to develop a training manual on how to establish ISWM systems.

> More comprehensive benefit and cost analysis need to be conducted considering the economic aspect and the environmental effects, including carbon credits.

> To roll-out the technology in the Philippines, it is essential to produce the filters and membranes locally.

> Efforts should be exerted to incouraqe decision-makers to include ISWM in the construction of government infrastructure and in the building code.

> Incentives must be provided by government to those who use ISWM or similar technologies.

> Benchmarking with other countries is needed.

Recommendations

> There is a need to pilot the ISWM in other islands of the Philippines to generate more success stories.

> To create more champions in eco-efficient water infrastructure and green growth among government, business, local government units, academe and society.

Creation of Green Growth Teams in the 16 regions of the Philippines.

Development and promotion of special financing and support programs for ISWM.

RAE KWON CHUNG

Director

DR. KIM TAE HYUNG

Economic Affairs Officer

HONG SOON MYUNG

CEO

JEONG KYOUNG HWAN

CHIEF

EREDE Co. Ltd.

OUR HEARTFELT GRATITUDE TO ALL OUR PARTNERS:

DR. KIM REEHO

Research Fellow

Thank You

DOST VII Contact info:Regional Director: Rene Burt N. Llanto (enertrub@yahoo.com)Address: The Lahug S&T Complex, Sudlon, Lahug, Cebu CityWebsite: www.ro7.dost.gov.phTel./Fax No.: (63-32) 254-8269 or 418-9032, (032) 232-8632