Site Assessment Plan (SAP) Vineyard Wind Lease OCS-A 0501 Massachusetts Offshore Wind Energy Area Vineyard Wind, LLC 700 Pleasant St. Suite 510 New Bedford, MA 02740 November 22, 2017 Addendum Submitted May 17, 2018 TABLE OF CONTENTS SECTION PAGE 1.0 PROJECT INFORMATION (585.610(A)) ................................................................................................ 3 1.1 Project Overview .............................................................................................................................. 3 1.1.1 Contact Information (585.610(a)(1)) ....................................................................................... 3 1.1.2 Concept (585.610(a)(2)) ......................................................................................................... 3 1.1.3 Designation of Operator (585.610(a)(3)) ................................................................................ 4 1.1.4 Lease Stipulations and Compliance (585.610(a)(4)) .............................................................. 4 1.2 Proposed Activity .............................................................................................................................. 6 1.2.1 General Structure and Project Design, Fabrication, and Installation (585.610(a)(6)) ............ 6 1.2.1.1 MET/Ocean Datasets Supporting Mooring Design ....................................................... 7 1.2.2 Deployment Activities (585.610 (a)(7)) ................................................................................. 18 1.2.3 Mitigation Measures (585.610 (a)(8)).................................................................................... 18 1.2.4 Decommissioning and Site Clearance Procedures (585.610 (a)(11)) .................................. 18 1.2.5 CVA nomination (585.610 (a)(9) ........................................................................................... 18 1.3 Regulatory Framework (585.610(a)(13)) ........................................................................................ 19 1.3.1 List of Permits/Authorizations ............................................................................................... 19 1.3.2 Completed and Anticipated Agency Correspondence (585.610(a)(14))............................... 19 1.3.3 Consistency Certification (585.611(b)(9)) ............................................................................. 19 1.4 Financial Assurance Information (585.610(a)(15)) ......................................................................... 20 1.5 Other Information (585.610(a)(16)) – As requested by BOEM ...................................................... 20 2.0 SURVEY RESULTS (585.610(B)) ........................................................................................................ 20 2.1 Geotechnical Survey (585.610(b)(1)) ............................................................................................. 20 2.2 Geological Survey and Shallow Hazards (585.610(b)(4)), (585.610(b)(2)) ................................... 20 2.3 Archeological Resources (585.610(b)(3)) ...................................................................................... 20 2.4 Biological Survey (585.610(b)(5)) ................................................................................................... 21 3.0 SITE CHARACTERIZATION AND IMPACT ASSESSMENT (585.611(B)) .......................................... 21 3.1 Environmental Baseline .................................................................................................................. 21 3.1.1 Geologic Setting .................................................................................................................... 21 3.1.2 Coastal Habitats .................................................................................................................... 21 3.1.3 Water Quality (585.611(b)(2)) ............................................................................................... 21 3.1.4 Benthic Resources (585.611(b)(3-5)) ................................................................................... 24 3.1.5 Fisheries and Essential Fish Habitat (585.611(b)(3-5)) ........................................................ 27 3.1.6 Marine Mammals and Sea Turtles (585.611(b)(3-5)) ........................................................... 33 3.1.6.1 Data Sources ............................................................................................................... 36 3.1.6.2 Marine Mammal Species Profiles ................................................................................ 37 3.1.6.3 Sea Turtle Species Profiles ......................................................................................... 41 3.1.7 Coastal and Marine Birds and Bats (585.611(b)(3-5)) .......................................................... 45 3.1.7.1 Avian Species Profiles ................................................................................................. 50 3.1.7.2 Bat Species Profiles .................................................................................................... 55 3.1.8 Archaeological Resources (585.611(b)(6)) ........................................................................... 55 3.1.9 Social and Economic Resources (585.611(b)(7)) ................................................................. 56 3.1.10 Coastal and Marine Uses (585.611(b)(8)) .......................................................................... 60 3.1.11 Air Quality (585.610(a)(12) and 585.659) ........................................................................... 61 3.2 Potential Impacts ............................................................................................................................ 62 3.2.1 Vessel Related Potential Impacts ......................................................................................... 63 3.2.2 Buoy-Related Potential Impacts ............................................................................................ 65 3.3 Mitigation Measures ....................................................................................................................... 66 3.3.1 Vessel Strike Avoidance Measures ...................................................................................... 67 3.3.2 Marine Trash and Debris Prevention .................................................................................... 68 3.3.3 Buoy Markings and Lighting .................................................................................................. 69 3.3.4 Buoy Notifications ................................................................................................................. 69 3.3.5 Air Quality Control Measures ................................................................................................ 69 4.0 REFERENCES (585.610(A)(10)) .......................................................................................................... 70 TABLES Table 1.1.4 Compliance with Regulations Table 1.2.1 Summary Description of Measuring Devices Under Consideration for Deployment Table 1.3.1 Vineyard Wind SAP Permitting Plan Table 3.1.3-1 Seasonal Variation in Chlorophyll-a Concentration Within the Vineyard Wind Lease Area from 2003 to 2015 Table 3.1.3-2 Seasonal Water Temperature Data Summary Table 3.1.3-3 Seasonal Salinity Data Summary Table 3.1.4-1 Summary of Key Statistics from the Site-specific Benthic Field Survey Table 3.1.4-2 Benthic Habitat Classification Table 3.1.5-1 Major Fish Species Potentially Occurring in the MA WEA Table 3.1.5-2 List of Threatened and Endangered Species and Species of Special Concern Table 3.1.5-3 EFH Designated Species in MA WEA Table 3.1.6-1 Marine Mammals Likely to Occur Table 3.1.6-2 Sea Turtles Likely to Occur Table 3.1.7-1 Avian Species Identified by the IPaC Database Table 3.1.7-2 Species Known to Occur Offshore Massachusetts Table 3.1.7-3 ESA Listed Coastal and Marine Bird Species with Potential to Occur Table 3.1.7-4 Species of Bat Known to Occur in Massachusetts Table 3.1.9-1 Annual Landings of Commercially Important* Fish Species for Massachusetts from 2011 to 2015. Landings Weights (lbs) and Values ($) are Presented Table 3.1.9-2 Annual landings (lbs) of Recreationally Important* Marine Species for Massachusetts from 2012 to 2016 Table 3.2 Summary of Impacts FIGURES Figure 1.2.1 Location Plat Showing Location of SAP Areas. Figure 1.2.1.1 Location of Met-Ocean Time Series Data Figure 1.2.2.2 DHI Total Sea State Wave Peal Period Figure 1.2.2.3 Time Series of 3-hours Significant Wave Height from DHI Figure 1.2.2.4 Tracks of Major Hurricanes During the Hindcast Period Figure 1.2.2.5 Measured Significant Wave Height at NOAA Buoys Figure 3.1.4 Locations of the Grab Samples Collected During the Benthic Field Survey Figure 3.1.6.2 Right Whale Seasonal Management Area Figure 3.1.7 All Avian Species Abundance Figure 3.1.7.1 Roseate Tern Abundance APPENDICES Appendix A MET/Ocean Buoy Specifications Appendix B BOEM Approval of Vineyard Wind Survey Plan Appendix C CONFIDENTIAL Geophysical Survey Report for Site Assessment Plan Appendix D CONFIDENTIAL Archaeological Report for Site Assessment Plan Appendix E CONFIDENTIAL Benthic Report for Site Assessment Plan ii Vineyard Wind SAP, Lease OCS-A 0501 November 22, 2017 1.0 PROJECT INFORMATION (585.610(A)) 1.1 Project Overview This section describes basic project information. 1.1.1 Contact Information (585.610(a)(1)) Rachel Pachter VP Permitting Affairs, Vineyard Wind, LLC 700 Pleasant St. Suite