Vancouver Fraser Port Authority PROJECT AND ENVIRONMENTAL REVIEW APPLICATION Annacis Island WWTP New Outfall System CDM Smith Canada ULC Prepared for: December 29, 2017 This page intentionally left blank Table of Contents Section 1 General Submission Requirements .................................................................... 1-1 1.1 Application Form ...................................................................................................................................................... 1-1 1.2 Contact List .................................................................................................................................................................. 1-1 Section 2 Project Description ........................................................................................... 2-1 2.1 General Scope ............................................................................................................................................................. 2-1 2.1.1 Metro Vancouver ......................................................................................................................................... 2-1 2.1.2 Annacis Island WWTP History .............................................................................................................. 2-2 2.1.3 Project Rational ........................................................................................................................................... 2-3 2.1.4 Project Overview ......................................................................................................................................... 2-3 2.1.5 Potential Post-Construction Impacts .................................................................................................. 2-5 2.1.6 Studies ............................................................................................................................................................. 2-6 2.2 Operation ..................................................................................................................................................................... 2-7 2.2.1 Capacity ........................................................................................................................................................... 2-7 2.2.2 Operational Impacts .................................................................................................................................. 2-8 2.3 Construction................................................................................................................................................................ 2-8 2.3.1 Construction Schedule and Staging ..................................................................................................... 2-8 2.3.2 In-River Construction Method ............................................................................................................. 2-10 2.3.2.1 Season 1: River Riser ................................................................................................................. 2-11 2.3.2.2 Season 2: Diffuser Installation ............................................................................................... 2-12 2.3.2.3 Season 3: Diffuser Connection ............................................................................................... 2-13 2.3.2.4 Season 3/4: Bypass Outfall Repair....................................................................................... 2-13 2.3.3 Tunnel Construction Method ............................................................................................................... 2-13 2.3.4 Construction Equipment ........................................................................................................................ 2-15 2.3.5 Construction Impacts .............................................................................................................................. 2-16 2.3.5.1 Traffic Impacts .............................................................................................................................. 2-16 2.3.5.2 Navigation Impacts ..................................................................................................................... 2-16 2.3.5.3 Dredging Impacts ........................................................................................................................ 2-16 2.3.5.4 Noise Impacts ................................................................................................................................ 2-17 2.3.5.5 Lighting Impacts .......................................................................................................................... 2-18 Section 3 Design Drawings ............................................................................................... 3-1 3.1 Site Plan ........................................................................................................................................................................ 3-1 3.1.1 General Drawings ........................................................................................................................................ 3-1 3.1.2 Lease and Property Boundaries, Easements, and Right of Ways ........................................... 3-1 3.1.3 Elevations and Legal High-Water Mark ............................................................................................. 3-1 3.1.4 Location and Dimensions of all Existing and Proposed Buildings ......................................... 3-2 3.1.5 Construction Access Points ..................................................................................................................... 3-2 3.2 Land Structures and Equipment ........................................................................................................................ 3-3 3.2.1 Excavation Depths ...................................................................................................................................... 3-3 3.2.2 Site Loading ................................................................................................................................................... 3-3 3.2.2.1 Outfall Shaft ..................................................................................................................................... 3-3 3.2.2.2 Outfall Tunnel ................................................................................................................................. 3-4 i • Table of Contents 3.3 Marine Structures and Equipment .................................................................................................................... 3-4 3.3.1 Temporary Marine Structures and Equipment .............................................................................. 3-4 3.3.1.1 Support of Excavation for River Riser .................................................................................. 3-5 3.3.1.2 Support of Excavation for Diffuser Manifold ..................................................................... 3-6 3.3.2 Permanent Marine Structures ............................................................................................................... 3-7 3.3.2.1 River Riser ........................................................................................................................................ 3-7 3.3.2.2 River Riser Piles ............................................................................................................................. 3-9 3.3.2.3 Diffuser Manifold ........................................................................................................................ 3-10 3.3.2.4 Outfall Tunnel............................................................................................................................... 3-11 3.4 Lot Grading and Utilities ..................................................................................................................................... 3-11 3.4.1 Lot Grading .................................................................................................................................................. 3-11 3.4.2 Utilities .......................................................................................................................................................... 3-11 3.5 Lighting Plan ............................................................................................................................................................ 3-12 3.5.1 Construction Phase Lighting ................................................................................................................ 3-12 3.5.2 Operational Phase Lighting .................................................................................................................. 3-12 Section 4 Studies and Reports .......................................................................................... 4-1 4.1 Geotechnical Reports and Analysis ................................................................................................................... 4-1 4.1.1 Geotechnical Investigations .................................................................................................................... 4-1 4.1.2 Seismic Analysis ........................................................................................................................................... 4-2 4.1.2.1 Seismic Design Criteria ..............................................................................................................