Building a Disaster Resilient Quezon City Project Hazards, Vulnerability and Risk Assessment Report 22 May 2013 Earthquakes and Megacities Initiative Earthquakes and Megacities Initiative Puno Building, 47 Kalayaan Avenue, Diliman, Quezon City, Metro Manila, Philippines 1101 T/F: +632 9279643; T: +632 4334074 www.emi-megacities.org Hazards, Vulnerability and Risk Assessment Report and City Risk Atlas Building a Disaster Resilient Quezon City Project 22 May 2013 4 Quezon CityQuezon Project EMI Research Team QCG Contributors Dr. Eng. Fouad Bendimerad, Risk Assessment Hon. Herbert M. Bautista, City Mayor, QCG Task Leader, Project Director, EMI Gen. Elmo DG San Diego (Ret.), Head, DPOS Dr. Bijan Khazai, Risk Assessment and ICT and QC DRRMC Action O#cer, Project Expert, EMI Director, QCG Building a Disaster Resilient Building a Disaster Mr. Jerome Zayas, Project Manager, EMI Mr. Tomasito Cruz, Head, CPDO, QCG Ms. Joyce Lyn Salunat-Molina, Co-Project Ms. Consolacion Buenaventura, DPOS, Project Manager, EMI Manager, QCG Ms. Ma. Bianca Perez, Project Coordinator, EMI Dr. Noel Lansang, DPOS, Project Coordinator, Mr. Leigh Lingad, GIS Specialist, EMI QCG Mr. Kristo!er Dakis, GIS Specialist, EMI Project Technical Working Group Ms. Lalaine Bergonia, GIS Specialist, EMI Engr. Robert Beltran, Department of Ms. Bernie Magtaas, KDD Manager, EMI Engineering, Data Cluster Head, QCG Ms. Marivic Barba, Research Assistant for Engr. Robert Germio, PDAD, Data Cluster DRRM, EMI Head, QCG Ms. Ishtar Padao, Research Assistant for DRRM, Dr. Esperanza Arias, Quezon City Health EMI Department, Data Cluster Head, QCG Mr. Lluis Pino, Graduate Intern, EMI Karl Michael Marasigan, DPOS, Data Cluster Mr. Eugene Allan Lanuza, Junior GIS Analyst, EMI Head, QCG Ms. Anne Marie Valera, Junior GIS Analyst, EMI Mr. Paolo Micael Villa, Junior GIS Analyst, EMI Mr. Eugene Allan Lanuza, Junior GIS Analyst, EMI Ms. Anne Marie Valera, Junior GIS Analyst, EMI Mr. Paolo Micael Villa, Junior GIS Analyst, EMI Ms. Tanya Mia Hisanan, Lay-out Artist, EMI Copyright © 2013 QCG and EMI The concepts, methodologies, and overall design of the Hazards, Vulnerability, and Risk Assess-ment (HVRA) Report are developed by EMI; hence, the aforementioned are, and remain, intellectual property of EMI. Parts of the contents, data, and information contained in this report are property of Quezon City. This document is jointly owned by the Quezon City Government and EMI. Permission to use this document is granted provided that the use of the document or parts thereof are for educational, informational, non-commercial, and personal use only. The Quezon City Government and EMI must be acknowledged in all cases as the source when reproducing or using any part of this publication. 5 About this Document and Risk Assessment Vulnerability Hazards, e Hazards, Vulnerability, and Risk Assessment Additional Contributors (HVRA) report is submitted to the Quezon City Barangay Greater Lagro Government as part of the Memorandum of Barangay Horseshoe Agreement between QCG and EMI, signed by Barangay Matandang Balara both parties on August 22, 2013. is document Barangay Operations Center assesses the impact of !ood and earthquake Report and City Risk Atlas Barangay Quirino 2-A hazards on Quezon City’s population and Barangay Teacher’s Village West physical assets. e HVRA report provides the City Administrator’s O!ce scienti"c foundation to disaster risk reduction City Assessor’s O!ce and management planning. City General Services Department City Health Department City Secretary’s O!ce City Treasurer’s O!ce Committee on Environment, Parks and Ecology Communication Coordination Center Community Relations O!ce Councilor and Committee on Public Order and Safety Department of Building O!cial Department of Engineering Department of Public Order and Safety Department of Public Order and Safety – Disaster Control Division Division of City Schools Environment Protection and Waste Department Gender and Development Resource Coordination Housing and Community Development and Reset- tlement Department Information and Technology O!ce Kapatiran Bayan ng Bagong Filipino Foundation O!ce of Councilor Gian Carlo Sotto O!ce of the Vice Mayor Parks Development and Administration Department Planning and Development O!ce Public A"airs and Information O!ce Quezon City Bureau of Fire Protection Quezon City General Hospital Quezon City Performing Arts Development Foun- dation, Inc. Quezon City Policy Department Radio Communications Services Social Services and Development Department Task Force COPRISS Urban Poor A"airs O!ce 6 Executive Summary Quezon CityQuezon Project Reduction and Management Plan (DRRMP). The Hazards, Vulnerability and Risk It also gives inputs to the other elements of Assessment (HVRA) Report focuses on the project such as the Land Use Planning analyzing the impact of earthquakes and Component, DRRM Plan Formulation, oods in Quezon City. e data, ndings, and DRRM Plan Components and Emergency mapping of social and physical losses provided Management Training Narrative Scenarios. in the report will enable the city to develop Building a Disaster Resilient Building a Disaster e outputs and recommendations of the necessary understanding and competency to project provides the elements for enacting address and reduce risk from earthquakes and risk sensitive policies, decisions and plans to oods. e determination of risk hotspots, or build a resilient Quezon City. It remains that Barangays with high risk in terms of casualties these recommendations must be incorporated and economic losses, allows for rational and in the QCG’s investment and development adequate planning of resources. plans to become eective. A capacity building program should also be undertaken to achieve e project undertook several meetings and internal technical competency in disaster risk workshops to involve the stakeholders with the reduction. development of the HVRA and information within QCG. It is recommended that Quezon e assessment of impacts for ood and City leadership enact policies and processes to earthquake are expressed in terms of: 1) mainstream HVRA within its core functions Identifying the spatial severity of the hazards and its governance processes as recommended in the city; 2) Quantifying damages, losses in this report and other reports related to this and impacts to population, buildings, project. infrastructure, critical and high loss facilities; and 3) identifying hotspot barangays. e rough the Disaster Risk Geo-Spatial approach for identifying risk hotspots is based Database (DRGS) that was jointly developed on the Urban Disaster Risk Index (UDRI) by EMI and QCG, scientically validated methodology, which combines directly the scenarios and parameters for planning were descriptors comprising both the physical developed. ese will guide the city in the risks and the socio-economic impact factors. performance of its mandate to protect the In the application of this methodology, the public and in improving the disaster resiliency objective is to bring in the local context of of its citizenry. e interaction between the socio-economic vulnerability and coping spatial distribution of the risk and the exposed capacities of these cities based on the available assets is carried out using GIS (Geographical information and data. Information Systems) and remote sensing technologies to enable high resolution In summary, the top ve barangays that are mapping. at high risk to both earthquake and ood are Bagumbayan, Libis, Damayang Lagi, Talayan e HVRA Report provides the scientic and Dioquino Zobel. foundation and sets the parameters for the development of strategies and actions in ese barangays are projected to have the developing the Quezon City’s Disaster Risk most losses in terms of casualties and physical 7 Hazards, Vulnerability and Risk Assessment Vulnerability Hazards, Top Five Barangays that are at high risk to both EQ and Floods Barangay Urban Disaster Earthquake Flood Risk Socio economic Risk Index Risk Index Index Impact Bagumbayan 0.543 0.815 0.329 0.464 Libis 0.439 0.433 0.380 0.534 Damayang Lagi 0.435 0.340 0.516 0.457 Talayan 0.424 0.276 0.578 0.425 Dioquino Zobel 0.410 0.398 0.578 0.484 Top Five Barangays with High Earthquake Risks Report and City Risk Atlas Barangay Earthquake Casualties/ Affected Risk Index Fatalities Buildings Index Bagumbayan 0.815 1.0 0.871 St. Ignatius 0.514 0.788 0.420 Ugong Norte 0.512 0.735 0.485 Bagong Silangan 0.506 0.636 0.406 Batasan Hills 0.500 0.586 0.485 and economic assets due to a combined risk to Bagumbayan is at the highest risk of earthquake and ood hazards. earthquake impact. !e earthquake hazard given in terms of Peak Ground Acceleration Earthquake Hotspots (PGA) in this Barangay is over 1.0g or a 9.8 on the Modi"ed Mercalli Index (MMI) which !e top "ve barangays that are at high risk to an is much higher than surrounding Barangays. extreme earthquake scenario (M7.2 earthquake !is produces very high casualties (fatalities originating from the West Valley Fault according expected in almost 2 percent of the population, to MMEIRS) are: and injuries in close to 5 percent of the population with 20 percent of the buildings t Bagumbayan expected to collapse or severely damaged in t St. Ignatius this scenario. t Ugong Norte t Bagong Silangan t Bagumbayan, St. Ignatius, White Plains, t Batasan Hills Ugong Norte and Blue Ridge B have some of the highest fatality rates with values !e results of the HVRA show that considering greater than 1.20 percent of the population the combined physical risks, socio-economic at risk. impacts, coping capacities and social vulnerabilities, these barangays will su#er the t Bagumbayan, Libis, Ugong Norte, Batasan most to the worst case scenario earthquake as Hills and Dona Aurora will have the projected by MMEIRS. highest number of damaged buildings due to ground shaking. In terms of loss on population and buildings, 8 t Kaligayahan has the highest number t Silangan which does not show up in the of critical facilities that are exposed top 10 ood risk Barangays has the highest to extreme ground shaking.