Quarry Creek MasterPlan Final Environ~r~ental :C1r1pact Report SCH#: 2012021039 I I Prepared for: Prepared By: 4~ CityOf ~~ > Carlsbad Hl1 .January 2013 Final Environmental Impact Report Quarry Creek Master Plan Carlsbad, California SCH No. 2012021039 January 2013 Prepared for City of Carlsbad 1635 Faraday Avenue Carlsbad, CA 92008 Prepared by HDR Engineering, Inc. 8690 Balboa Avenue, Suite 200 San Diego, CA 92123 Table of Contents TABLE OF CONTENTS ACRONYMS AND ABBREVIATIONS ......................................................................................................... XI 0.1 INTRODUCTION AND SUMMARY............................................................................................ 0.1 -1 0.2 CORRECTIONS AND ADDITIONS............................................................................................ 0.2-1 0.2.1 REVISED AND SUPPLEMENTAL TEXT ................................................................ .0.2 -1 0.2.2 REVISED MITIGATION MEASURES ......................................................................0.2 -2 0.3 RESPONSE TO COMMENTS.................................................................................................... 0.3-1 0.4 MITIGATION MONITORING AND REPORTING PROGRAM.................................................... OA-1 1.0 INTRODUCTION ........................................................................................................................... 1-1 1.1 INTRODUCTION .......................................................................................................... 1-1 1.2 PURPOSE OF AN EIR .................................................................................................... 1-1 1.3 EIRADEQUACY ............................................................................................................ 1-1 1.4 DOCUMENT ORGANIZATION .................................................................................. 1-2 1.5 NOTICE OF PREPARATION AND SCOPING MEETING .......................................... 1-3 1.6 ENVIRONMENTAL TOPICS ADDRESSED ................................................................ 1-9 1.7 EIR PROCESSING ........................................................................................................ 1-10 1.8 COMMENTS REQUESTED ... ..................................................................................... 1-10 2.0 EXECUTIVE SUMMARY............................................................................................................... 2-1 2.1 PROJECT SYNOPSIS ..................................................................................................... 2-1 2.2 SUMMARY OF SIGNIFICANT IMPACTS AND MITIGATION MEASURES THAT REDUCE OR AVO ID THE SIGNIFICANT IMPACTS .................................... 2-7 2.3 AREAS OF CONTROVERSY AND ISSUES TO BE RESOLVED ............................ 2-28 2.4 PROJECT ALTERNATIVES ........................................................................................ 2-29 3.0 PROJECT DESCRIPTION ............................................................................................................ 3-1 3.1 PROJECT LOCATION ................................................................................................... 3-1 3.2 PROJECT SETTING ....................................................................................................... 3-1 3.3 PROJECT CHARACTERISTICS ................................................................................... 3-2 3.3 .1 Residential Development .................................................................................... 3-9 3.3.2 Public Use ......................................................................................................... 3-14 3.3.3 Open Space .. ..................................................................................................... 3-15 3.3.4 Circulation ........................................................................................................ 3-16 3.3.5 Habitat Management Plan ................................................................................. 3-23 3.3.7 Grading ............................................................................................................. 3-24 3.3.8 Landscaping ..................................................................................................... 3-29 3.3.8 Off-Site Improvements ..................................................................................... 3-29 3.4 PROJECT OBJECTIVES .............................................................................................. 3-30 3 .4.1 Actions and Approvals by the City of Carlsbad ............................................... 3-34 3.4.2 Discretionruy Action and Approvals by Other Agencies .................................. 3-36 L ~""> Quarry Creek Master Plan City of Carlsbad .eLl... ' Final EIR January 2013 Table of Contents 4.0 ENVIRONMENTAL SETTING....................................................................................................... 4-1 5.0 ENVIRONMENTAL IMPACT ANAL VSIS.................................................................................... 5.0-1 5.1 AESTHETICS .............................................................................................................. 5.1-1 5 .1. 1 Existing Conditions .......................................................................................... 5.1-1 5.1.2 Regulato1y Setting ........................................................................................... 5.1-3 5 .1.3 Project Impacts ................................................................................................ 5.1-6 5.1.4 Level of Significance Before Mitigation ....................................................... 5.1-55 5 .1. 5 Environmental Mitigation Measures .............................................................. 5.1-55 5.1.6 Level of Significance After Mitigation .......................................................... 5.1-56 5.2 AGRICULTURE AND FORESTRY RESOURCES ................................................... 5.2-1 5 .2.1 Existing Conditions .......................................................................................... 5.2-1 5.2.2 Regulato1y Setting ........................................................................................... 5.2-1 5.2.3 Project Impacts ................................................................................................ 5.2-2 5 .2.4 Level of Significance Before Mitigation ......................................................... 5.2-6 5.2.5 Environmental Mitigation Measures .. .............................................................. 5.2-6 5.2.6 Level of Significance After Mitigation ............................................................ 5.2-6 5.3 AIR QUALITY ............................................................................................................. 5.3-1 5.3.1 Existing Conditions .......................................................................................... 5.3-1 5.3.2 Regulato1y Setting ........................................................................................... 5.3-4 5.3.3 Project Impacts ................................................................................................ 5.3-8 5.3.4 Level of Significance Before Mitigation ....................................................... 5.3-16 5.3.5 Environmental Mitigation Measures .. ............................................................ 5.3-16 5.3.6 Level of Significance After Mitigation .......................................................... 5.3-17 5.4 BIOLOGICAL RESOURCES ...................................................................................... 5.4-1 5.4.1 Existing Conditions... ....................................................................................... 5.4-1 5.4.2 Regulato1y Setting ......................................................................................... 5.4-14 5 .4.3 Project Impacts .............................................................................................. 5.4-17 5.4.4 Level of Significance Before Mitigation ....................................................... 5.4-35 5.4.5 Environmental Mitigation Measures .. ............................................................ 5.4-36 5.4.6 Level of Significance After Mitigation .......................................................... 5.4-46 5.5 CULTURAL RESOURCES ......................................................................................... 5.5-1 5.5.1 Existing Conditions. ......................................................................................... 5.5-1 5.5.2 Regulato1y Setting ........................................................................................... 5.5-9 5.5.3 Project Impacts .............................................................................................. 5.5-11 5.5.4 Level of Significance Before Mitigation ....................................................... 5.5-21 5.5.5 Environmental Mitigation Measures .............................................................. 5.5-21 5.5.6 Level of Significance After Mitigation .......................................................... 5.5-26 5.6 GEOLOGY AND SOILS ............................................................................................. 5.6-1 5.6.1 Existing Conditions. ......................................................................................... 5.6-1 5.6.2 Regulato1y Setting ..........................................................................................