Archaeological Inventory and Evaluation Report for the Sunroad—East Otay Mesa Specific Plan Amendment, San Diego County, California Sunroad – East Otay Mesa Specific Plan Amendment PDS2015-GPA-15-008, PDS2015-SPA-15-001, PDS2015-TM-5607, FINAL PDS2015-REZ-15-007, PDS2015-ER-98-190-13G August 2016 Lead Agency: County of San Diego Planning & Development Services Contact: Donna Beddow 5510 Overland Avenue, Suite 310 San Diego, California 92123 858-694-3656 Preparer: Shelby Castells, M.A., RPA Approved by: Mark Becker, Ph.D., RPA ______________________ Project Proponent: Sunroad Otay Partners, L.P. 4445 Eastgate Mall, Suite 400 San Diego, CA 92121 2034 Corte del Nogal Carlsbad, California 92011 (760) 504-5757 ASM Project Number 25970 Archaeological Inventory and Evaluation Report for the Sunroad—East Otay Mesa Specific Plan Amendment, San Diego County, California Sunroad—East Otay Mesa Specific Plan Amendment PDS2015-GPA-15-008, PDS2015-SPA-15-001, PDS2015-TM-5607, PDS2015-REZ-15-007, PDS2015-ER-98-190-13G Lead Agency: County of San Diego Planning & Development Services Contact: Donna Beddow 5510 Overland Avenue, Suite 310 San Diego, California 92123 858-694-3656 Preparer: Shelby Castells, M.A., RPA Approved by: Mark Becker, Ph.D., RPA ______________________ ASM Affiliates, Inc. 2034 Corte del Nogal Carlsbad, California 92011 760-804-5757 Project Proponent: Sunroad Otay Partners, L.P. 4445 Eastgate Mall, Suite 400 San Diego, CA 92121 PN 25970 August 2016 Table of Contents TABLE OF CONTENTS Chapter Page NATIONAL ARCHAEOLOGICAL DATABASE INFORMATION........................ iii EXECUTIVE SUMMARY ..................................................................................... iv 1.0 INTRODUCTION............................................................................................. 1 1.1 PROJECT DESCRIPTION .................................................................................... 1 1.2 PROJECT LOCATION .......................................................................................... 2 1.3 EXISTING CONDITIONS ...................................................................................... 2 1.3.1 Environmental Setting.................................................................................. 2 1.4 RECORD SEARCH RESULTS ............................................................................16 1.4.1 Previous Studies.........................................................................................16 1.4.2 Previously Recorded Cultural Resources....................................................23 1.5 APPLICABLE REGULATIONS.............................................................................30 1.5.1 California Register of Historic Resources and the California Environmental Quality Act ................................................................................................................30 1.5.2 San Diego County Local Register of Historical Resources ..........................31 1.5.3 County of San Diego Resource Protection Ordinance (RPO)......................32 1.5.4 Traditional Cultural Properties / Tribal Cultural Resources ..........................32 2.0 GUIDELINES FOR DETERMINING IMPACT SIGNIFICANCE.................... 35 3.0 ANALYSIS OF PROJECT EFFECTS ......................................................... 37 3.1 METHODS...........................................................................................................37 3.1.1 Survey Methods .........................................................................................37 3.1.2 Test Methods .............................................................................................37 3.1.3 Laboratory and Cataloging Procedures.......................................................37 3.1.4 Curation ......................................................................................................37 3.1.5 Native American Participation .....................................................................38 3.2 RESULTS ............................................................................................................39 3.2.1 Results from the Gallegos 2008 Study........................................................39 3.2.2 Results from the ASM 2016 Study ..............................................................40 4.0 INTERPRETATION OF RESOURCE IMPORTANCE AND IMPACT IDENTIFICATION................................................................................................ 43 4.1 RESOURCE IMPORTANCE ................................................................................43 4.1.1 CA-SDI-9975 ..............................................................................................43 4.1.2 CA-SDI-12337............................................................................................43 4.1.3 CA-SDI-12730............................................................................................44 4.1.4 Historic Structure Location .........................................................................44 4.1.5 P-37-31491.................................................................................................44 4.1.6 Tribal Cultural Resources............................................................................45 4.2 IMPACT IDENTIFICATION .................................................................................45 4.2.1 CA-SDI-9975..............................................................................................45 4.2.2 CA-SDI-12337 ..........................................................................................45 4.2.3 CA-SDI-12730 ..........................................................................................45 4.2.4 Historic Structure Location........................................................................46 4.2.5 P-37-31491.................................................................................................46 Sunroad-East Otay Mesa Specific Plan Amendment i Table of Contents 4.2.6 Tribal Cultural Resources............................................................................46 5.0 MANAGEMENT CONSIDERATIONS—MITIGATION MEASURES AND DESIGN CONSIDERATIONS ............................................................................. 47 5.1 UNMITIGATED IMPACTS....................................................................................47 5.2 MITIGATED IMPACTS.........................................................................................47 6.0 REFERENCES.............................................................................................. 51 7.0 LIST OF PREPARERS AND PERSONS AND ORGANIZATIONS CONTACTED...................................................................................................... 65 8.0 LIST OF MITIGATION MEASURES AND DESIGN CONSIDERATIONS.... 67 APPENDICES ..................................................................................................... 69 APPENDIX A.................................................................................................................71 SCIC Record Search Confirmation ...........................................................................71 APPENDIX B.................................................................................................................73 Confidential NAHC Correspondence.........................................................................73 APPENDIX C.................................................................................................................75 Confidential Maps .....................................................................................................75 APPENDIX D.................................................................................................................77 Confidential DPR Forms ...........................................................................................77 APPENDIX E.................................................................................................................79 Confidential Gallegos 2008 Report and Appendices .................................................79 LIST OF FIGURES Page Figure 1. Project vicinity. ............................................................................................................................. 3 Figure 2. Project location............................................................................................................................. 4 Figure 3. Project design............................................................................................................................... 5 Figure 4. Project’s tentative map................................................................................................................. 6 LIST OF TABLES Page Table 1. Previous Cultural Resources Reports Addressing the Project Area and 1-mi. Record Search Radius................................................................................................................... 16 Table 2. Previously Recorded Cultural Resources within a 1-mi. Radius of the Project Area................. 23 Table 3. Recommended Mitigation Measures ......................................................................................... 67 ii ASM Affiliates, Inc. NADB Information NATIONAL ARCHAEOLOGICAL DATABASE INFORMATION Authors: Shelby Castells, M.A., RPA and Mark Becker, Ph.D., RPA Firm: ASM Affiliates, Inc. Client/Project Proponent: Sunroad Otay Partners, L.P. County Permit Numbers: 008, PDS2015-SPA-15-001, PDS2015-TM-5607, PDS2015-REZ-15-