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Appendix 9-11 Wildfire Tech Reports

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Appendix 9-11 Wildfire Tech Reports APPENDIX 9.11 WILDFIRE TECHNICAL REPORTS ACCEPTED DRAFT Murrieta Hills FIRE PROTECTION TECHNICAL REPORT Plan No. SP 012-3164, TTM 35853 Prepared for: Murrieta Fire and Rescue 41825 Juniper Street Murrieta, California 92562 Contact: Scott Ferguson, Fire Chief On behalf of Applicant: Benchmark Pacific 550 Laguna Drive, Suite B Carlsbad, California 92008 Contact: Richard Robotta, Vice President Prepared by: 605 Third Street Encinitas, California 92024 Contact: Michael Huff, Principal AUGUST 2019 Printed on 30% post-consumer recycled material. Murrieta Hills Fire Protection Technical Report TABLE OF CONTENTS Section Page No. EXECUTIVE SUMMARY .......................................................................................................... V ES.1 Findings for Maximum Dead-End Road Length .................................................. vii 1 INTRODUCTION..............................................................................................................1 1.1 Intent ....................................................................................................................... 2 1.2 Applicable Codes/Existing Regulations ................................................................. 2 1.3 Proposed Project Summary ..................................................................................... 3 1.3.1 Location ...................................................................................................... 3 1.3.2 Current Site and Vicinity Land Use ............................................................ 4 1.3.3 Project Description ...................................................................................... 9 2 PROPOSED PROJECT SITE RISK ANALYSIS ........................................................13 2.1 Field Assessment .................................................................................................. 13 2.2 Site Characteristics and Fire Environment ........................................................... 13 2.2.1 Topography ............................................................................................... 13 2.2.2 Climate ...................................................................................................... 14 2.2.3 Vegetation ................................................................................................. 15 2.2.4 Vegetation Dynamics ................................................................................ 21 2.2.5 Fire History ............................................................................................... 22 3 ANTICIPATED FIRE BEHAVIOR ..............................................................................23 3.1 Fire Behavior Modeling ........................................................................................ 23 3.1.1 Modeling History ...................................................................................... 23 3.1.2 Modeling Inputs ........................................................................................ 24 3.1.3 BehavePlus Analysis ................................................................................. 27 3.1.4 Fire Behavior Summary ............................................................................ 28 4 EMERGENCY RESPONSE AND SERVICE ...............................................................33 4.1 Fire Facilities ........................................................................................................ 33 4.2 Emergency Response Travel Time Coverage ....................................................... 34 4.3 Estimated Calls and Demand for Service from the Project .................................. 35 5 FIRE SAFETY REQUIREMENTS – DEFENSIBLE SPACE, INFRASTRUCTURE, AND BUILDING IGNITION RESISTANCE .......................37 5.1 Fuel Modification Zones ....................................................................................... 37 5.1.1 Zones and Permitted Vegetation ............................................................... 37 5.1.2 FMZ Augmentation .................................................................................. 42 9608 i August 2019 Murrieta Hills Fire Protection Technical Report TABLE OF CONTENTS (CONTINUED) Section Page No. 5.2 Other Vegetation Management ............................................................................. 45 5.2.1 Roadside Fuel Modification Zones (Including Driveways exceeding 150 feet in length) ............................................................................................ 45 5.2.2 Trail Vegetation Management .................................................................. 46 5.2.3 Parks, Open Space, etc. ............................................................................. 46 5.2.4 Water Detention Basins ............................................................................ 47 5.2.5 Murrieta Hills Preserve Areas ................................................................... 47 5.2.6 Private Residential Lots ............................................................................ 48 5.2.7 Fuel Modification Easement for Greer Ranch .......................................... 48 5.2.8 Annual Fuel Modification Maintenance ................................................... 48 5.2.9 Annual FMZ Compliance Inspection........................................................ 49 5.2.10 Interior Manufactured Slopes ................................................................... 49 5.2.11 Construction Phase Fuel Management ...................................................... 50 5.3 Road Requirements ............................................................................................... 51 5.3.1 Access ....................................................................................................... 51 5.3.2 Gates ......................................................................................................... 53 5.3.3 Driveways ................................................................................................. 54 5.4 Structure Requirements ......................................................................................... 54 5.4.1 Ignition-Resistance ................................................................................... 54 5.4.2 Fire Protection System Requirements ....................................................... 58 5.4.3 Additional Requirements and Recommendations Based on Occupancy Type .......................................................................................................... 60 6 EMERGENCY PRE-PLANNING – EVACUATION ..................................................61 6.1 Quick Reference – Wildland Fire Evacuation Plan .............................................. 61 6.2 Background ........................................................................................................... 62 6.3 Riverside County Evacuation Planning Summary ................................................ 65 6.4 Murrieta Hills Evacuation Road Network ............................................................ 66 6.4.1 Evacuation Route Determination .............................................................. 69 6.4.2 Roadway Capacities and Maximum Evacuation Time Estimate .............. 69 6.5 Murrieta Hills Resident Fire/Evacuation Awareness ............................................ 70 6.6 Murrieta Hills Evacuation Procedures .................................................................. 72 6.6.1 Murrieta Hills Evacuation Baseline .......................................................... 74 6.6.2 Civilian and Firefighter Evacuation Contingency .................................... 74 6.7 Evacuation Plan Limitations ................................................................................. 78 9608 ii August 2019 Murrieta Hills Fire Protection Technical Report TABLE OF CONTENTS (CONTINUED) Section Page No. 6.8 Wildfire Education ................................................................................................ 79 7 CUMULATIVE IMPACT ANALYSIS .........................................................................81 8 DETERMINATION OF PROPOSED PROJECT EFFECTS ....................................83 9 FINDINGS FOR COMPLIANCE WITH CALIFORNIA GOVERNMENT CODE 66474.02.............................................................................................................................89 10 CONCLUSION ................................................................................................................99 11 LIST OF PREPARERS .................................................................................................103 12 REFERENCES (INCLUDING REFERENCES CITED IN APPENDICES) .........105 APPENDICES A Photograph Log B Fire History Exhibit C Murrieta Fire Rescue Approved Residential Hydrant Location Map D Fuel Modification Zones and Fire Safety Plan E Example Acceptable Landscape Plant Palette F Project Prohibited Plant List G “Ready, Set, Go!” Personal Action Plan FIGURES 1 Regional Map .......................................................................................................................5 2 Vicinity Map ........................................................................................................................7 3 Murrieta Hills Project Site Plan .........................................................................................11 4 Vegetation and Land Cover Types Map ............................................................................17 5 BehavePlus Fire
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