2011-12-23-OA-DEA-Tantalus-Drive
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Highway Improvements, Roadway Repair Vicinity of 3798 Tantalus Drive Honolulu, Oahu, Hawaii Department of Design and Construction City and County of Honolulu December 2011 Highway Improvements, Roadway Repair Vicinity of 3798 Tantalus Drive Honolulu, Hawai‘i Prepared for Department of Design and Construction City and County of Honolulu 650 South King Street Honolulu, HI 96813 Prepared by Kimura International, Inc. 1600 Kapi‘olani Boulevard, Suite 1610 Honolulu, HI 96814 December 2011 Highway Improvements, Roadway Repair Table of Contents Vicinity of 3798 Tantalus Drive Draft Environmental Assessment Table of Contents Glossary of Acronyms and Hawaiian Terms .............................................................................. v 1 INTRODUCTION ......................................................................................................................... 1-1 1.1 Proposing Agency and Action ........................................................................................ 1-1 1.2 Project Area .................................................................................................................... 1-1 1.3 Project Purpose and Need ............................................................................................... 1-2 1.4 Purpose of the Draft Environmental Assessment ........................................................... 1-2 1.5 Steps in the Environmental Review Process.................................................................... 1-6 1.6 Permits and Approvals Required or Potentially Required .............................................. 1-6 1.7 Project Summary ............................................................................................................ 1-7 2 PROJECT ALTERNATIVES ....................................................................................................... 2-1 2.1 Project Background..........................................................................................................2-1 2.2 Preferred Alternative ...................................................................................................... 2-6 2.2.1 Construction Phasing and Traffic Control ......................................................... 2-8 2.2.2 Project Schedule ............................................................................................... 2-13 2.2.3 Cost Estimate ................................................................................................... 2-13 2.3 Alternatives Considered, But Not Carried Forward .................................................... 2-13 2.3.1 No Action ......................................................................................................... 2-13 2.3.2 Conventional Concrete Retaining Wall ........................................................... 2-13 2.3.3 Segmental Retaining Wall ............................................................................... 2-14 2.3.4 Drilled Shaft Retaining Wall ........................................................................... 2-15 2.3.5 Soil-Nailed Wall .............................................................................................. 2-15 2.4 Temporary Pedestrian Route ........................................................................................ 2-16 3 AFFECTED ENVIRONMENT, IMPACTS, AND MITIGATION .................................................... 3-1 3.1 Physical Resources ......................................................................................................... 3-1 3.1.1 Geology and Soils .............................................................................................. 3-1 3.1.2 Climate and Air Quality ..................................................................................... 3-3 3.1.3 Water Quality ..................................................................................................... 3-4 3.1.4 Natural Hazards ................................................................................................. 3-5 3.1.5 Noise .................................................................................................................. 3-6 3.2 Biological Resources ...................................................................................................... 3-7 3.2.1 Flora ................................................................................................................... 3-7 3.2.2 Terrestrial and Avian Fauna ............................................................................... 3-8 i Highway Improvements, Roadway Repair Table of Contents Vicinity of 3798 Tantalus Drive Draft Environmental Assessment 3.3 Cultural Resources .......................................................................................................... 3-9 3.3.1 Archaeological and Historic Resources ............................................................. 3-9 3.3.2 Cultural Impact Assessment ............................................................................ 3-13 3.4 Socio-economic Environment ...................................................................................... 3-16 3.5 Scenic and Visual Resources ....................................................................................... 3-17 3.6 Traffic and Circulation ................................................................................................. 3-18 3.6.1 Vehicular Traffic .............................................................................................. 3-18 3.6.2 Pedestrian and Bicycle Facilities ..................................................................... 3-21 3.6.3 Bus Transit ....................................................................................................... 3-22 3.7 Parks and Recreational Facilities ................................................................................. 3-22 3.8 Public Health and Safety .............................................................................................. 3-26 3.8.1 Police Protection Services ................................................................................ 3-26 3.8.2 Fire Protection Services ................................................................................... 3-26 3.8.3 Emergency Medical Services ........................................................................... 3-26 3.9 Public Infrastructure and Facilities .............................................................................. 3-27 3.9.1 Water and Wastewater Systems ....................................................................... 3-27 3.9.2 Solid Waste Management ................................................................................ 3-27 3.9.3 Electrical and Telecommunications Systems ................................................... 3-28 4 LAND USE PLANS, POLICIES, AND CONTROLS .................................................................... 4-1 4.1 Hawai‘i State Plan and Functional Plans ........................................................................ 4-1 4.2 State Land Use Classification ......................................................................................... 4-1 4.3 City and County of Honolulu Land Use Regulations .................................................... 4-2 4.3.1 O‘ahu General Plan ............................................................................................ 4-2 4.3.2 Primary Urban Center Development Plan ......................................................... 4-2 4.3.3 Zoning ................................................................................................................ 4-3 5 OTHER ENVIRONMENTAL CONSIDERATIONS ....................................................................... 5-1 5.1 Unavoidable Adverse Effects ........................................................................................ 5-1 5.2 Energy Requirements and the Conservation Potential of Various Alternatives And Mitigation Measures .............................................................................................. 5-1 5.3 Relationship of Short-term Uses and Long-term Productivity ...................................... 5-1 5.4 Irretrievable and Irreversible Resource Commitments .................................................. 5-1 6 FINDINGS AND REASONS SUPPORTING THE ANTICIPATED DETERMINATION ................ 6-1 ii Highway Improvements, Roadway Repair Table of Contents Vicinity of 3798 Tantalus Drive Draft Environmental Assessment 7 ANTICIPATED DETERMINATION............................................................................................... 7-1 8 REFERENCES ............................................................................................................................ 8-1 9 CONSULATION AND COORDINATION ..................................................................................... 9-1 9.1 Organizations Consulted During Preliminary Engineering Design .............................. 9-1 9.2 Organizations Consulted During Preparation of the DEA ............................................. 9-6 9.3 Makiki/Lower Punchbowl/Tantalus Neighborhood Board .......................................... 9-15 9.4 Tantalus Community Association ................................................................................ 9-16 9.5 Agencies, Organizations, and Individuals to be Contacted during the DEA Review Period ..................................................................................................... 9-16 Pre-assessment Comment