Covina Bowl Specific Plan Appendices APPENDIX L: TRAFFIC IMPACT ANALYSIS & SUPPLEMENTAL VMT ANALYSIS Covina Bowl Specific Plan Appendices This page intentionally left blank. TRANSPORTATION IMPACT STUDY COVINA BOWL SPECIFIC PLAN PROJECT City of Covina, California July 1, 2020 Prepared for: Trumark Homes, LLC 450 Newport Center Drive, Suite 300 Newport Beach, California 92660 LLG Ref. 1-19-4348-1 Prepared by: Under the Supervision of: 600 South Lake Avenue Suite 500 Chin S. Taing, PTP Clare M. Look-Jaeger, P.E. Pasadena, CA 91106 Transportation Planner III Principal TABLE OF CONTENTS SECTION PAGE 1.0 Introduction ............................................................................................................................. 1 1.1 Study Area ....................................................................................................................... 3 1.2 Overview of Senate Bill 743 ........................................................................................... 4 1.3 Congestion Management Program Status ....................................................................... 4 2.0 Project Description.................................................................................................................. 5 2.1 Site Location .................................................................................................................... 5 2.2 Existing Project Site ......................................................................................................... 5 2.2.1 Planning Areas 1 and 2 .................................................................................. 5 2.2.2 Planning Area 3.............................................................................................. 5 2.2.3 Planning Area 4.............................................................................................. 5 2.3 Proposed Project Description .......................................................................................... 5 2.3.1 Planning Areas 1 and 2 .................................................................................. 5 2.3.2 Planning Area 3.............................................................................................. 7 2.3.3 Planning Area 4.............................................................................................. 7 3.0 Site Access and Circulation .................................................................................................... 10 3.1 Existing Site Access ......................................................................................................... 10 3.2 Proposed Vehicular Site Access ...................................................................................... 10 3.2.1 Planning Areas 1 and 2 .................................................................................. 10 3.2.2 Planning Area 3.............................................................................................. 11 3.2.3 Planning Area 4.............................................................................................. 11 3.3 Pedestrian Access ............................................................................................................ 11 3.4 Bicycle Access ................................................................................................................. 12 4.0 Project Parking Analysis ........................................................................................................ 14 4.1 City Code Parking Requirements............................................................................... 14 4.2 Proposed Specific Plan Parking Requirements .......................................................... 15 4.3 Proposed Project Parking Supply............................................................................... 16 4.4 Code Parking Analysis Summary .............................................................................. 16 4.5 Specific Plan Parking Analysis Summary ................................................................. 16 4.6 Shared Parking Demand Analysis ............................................................................. 17 5.0 Existing Street System ............................................................................................................ 21 5.1 Regional Highway System .............................................................................................. 21 5.2 Local Street System ......................................................................................................... 21 5.3 Roadway Classifications .................................................................................................. 22 5.4 Roadway Descriptions ..................................................................................................... 22 5.5 Existing Transit Services ................................................................................................. 25 5.5.1 Public Bus Transit ............................................................................................... 25 5.5.2 Regional Rail Transit .......................................................................................... 25 6.0 Traffic Counts .......................................................................................................................... 29 LINSCOTT, LAW & GREENSPAN, engineers LLG Ref. 1-19-4348-1 ii Covina Bowl Specific Plan Project O:\JOB_FILE\4348\Report\4348-Rpt2.doc TABLE OF CONTENTS (continued) SECTION PAGE 7.0 Cumulative Development Projects ........................................................................................ 34 7.1 Related Projects ............................................................................................................... 34 7.2 Ambient Traffic Growth Factor ....................................................................................... 38 8.0 Traffic Forecasting Methodology .......................................................................................... 41 8.1 Project Traffic Generation ............................................................................................... 41 8.1.1 Planning Areas 1 and 2 Trip Generation ............................................................. 41 8.1.2 Planning Area 3 Trip Generation ........................................................................ 43 8.1.3 Planning Area 4 Trip Generation ........................................................................ 43 8.2 Project Traffic Distribution and Assignment .................................................................. 43 9.0 Transportation Impact Analysis Methodology .................................................................... 54 9.1 Signalized Intersections ................................................................................................... 54 9.2 Unsignalized Intersection ................................................................................................ 55 9.3 Impact Criteria and Thresholds ....................................................................................... 55 9.3.1 City of Covina Impact Criteria and Thresholds .................................................. 56 9.3.2 City of West Covina Impact Criteria and Thresholds......................................... 56 9.3.3 County of Los Angeles Impact Criteria and Thresholds .................................... 57 9.4 Transportation Impact Analysis Scenarios ...................................................................... 57 10.0 Transportation Analysis ......................................................................................................... 59 10.1 Existing Conditions.......................................................................................................... 59 10.1.1 Existing Conditions ............................................................................................. 59 10.1.2 Existing With Project (Planning Areas 1 and 2) Conditions .............................. 59 10.1.3 Existing With Project (Planning Areas 1, 2, 3, and 4) Conditions ..................... 59 10.2 Future (2024) Near-Term Conditions .............................................................................. 59 10.2.1 Future Without Project Conditions ..................................................................... 59 10.2.2 Future With Project (Planning Areas 1 and 2) Conditions ................................. 68 10.3 Future (2040) Specific Plan Build-out Conditions .......................................................... 68 10.3.1 Future Without Project Conditions ..................................................................... 68 10.3.2 Future With Project (Planning Areas 1, 2, 3 and 4) Conditions ......................... 73 11.0 Transportation Improvement Measures .............................................................................. 78 11.1 Summary of Specific Plan Build-out Impacts ................................................................ 78 11.2 Transportation Mitigation Measures ............................................................................... 78 12.0 Summary and Conclusions .................................................................................................... 81 LINSCOTT, LAW & GREENSPAN, engineers LLG Ref. 1-19-4348-1 iii Covina Bowl Specific Plan Project O:\JOB_FILE\4348\Report\4348-Rpt2.doc TABLE OF CONTENTS (continued) LIST OF FIGURES SECTION—FIGURE # PAGE 1–1 Vicinity Map .........................................................................................................................