Final Environmental Impact Report - Whittier Bridge/I-95 ...

Whittier Bridge/I-95 Improvement Project FEIR
Table of Contents
3.16.6 Section 401 Water Quality Certifications – MassDEP ..................................................... 3-24
3.16.7 Findings/Commitments .................................................................................................... 3-27
3.17 MassDOT Draft Section 61 Finding ......................................................................................... 3-28
3.17.1 Introduction ....................................................................................................................... 3-28
3.17.2 Purpose and Need ........................................................................................................... 3-28
3.17.3 The MEPA Review Process ............................................................................................. 3-29
3.17.4 Avoidance and Minimization ............................................................................................ 3-29
3.17.5 Massachusetts Endangered Species Act – Massachusetts Natural Heritage &
Endangered Species Program ......................................................................................... 3-33
3.17.6 Historic Resources ........................................................................................................... 3-34
3.17.7 Coastal Zone Management Consistency – Massachusetts Office of Coastal Zone
Management .................................................................................................................... 3-36
3.17.8 Mitigation Implementation Cost and Schedule ................................................................. 3-36
3.17.9 Findings/Commitments .................................................................................................... 3-37
3.18 Mitigation and Commitment Monitoring Plan ........................................................................... 3-39
List of Tables
Table 1-1: List of Permits and Approvals ............................................................................................ 1-1
Table 1-2: Revised Wetland Impacts .................................................................................................. 1-3
Table 1-3: Riverfront Area Mitigation – Newburyport ........................................................................ 1-20
Table 1-4: Riverfront Area Mitigation – Amesbury ............................................................................ 1-22
Table 1-5: Pertinent “Current Effective” HEC-2 Model Data .............................................................. 1-40
Table 1-6: Pertinent Existing Bridge Geometric Parameters Incorporated In ―Pre-Project (Existing)
Conditions‖ HEC-RAS Model ........................................................................................... 1-41
Table 1-7: Pertinent Preferred Bridge Type Geometric Parameters Incorporated In ―Post-Project
(Revised) Conditions‖ HEC-RAS Model........................................................................... 1-41
Table 2-1: Stormwater Outfalls .......................................................................................................... 2-18
Table 3-1: Construction Noise Limits ................................................................................................ 3-17
List of Figures
Figure 1-1: Design Refinement at Wetland 1 ....................................................................................... 1-4
Figure 1-2: Project Phasing – Existing Bridge ...................................................................................... 1-6
Figure 1-3: Project Phasing – Northbound Bridge Construction .......................................................... 1-7
Figure 1-4: Project Phasing – Existing Bridge Demolition .................................................................... 1-8
Figure 1-5: Project Phasing – Southbound Bridge Construction .......................................................... 1-9
Figure 1-6: Project Phasing – Final Configuration .............................................................................. 1-10
Figure 1-7: Riverfront Area Impacts – Newburyport ........................................................................... 1-21
Figure 1-8: Riverfront Area Impacts – Amesbury ............................................................................... 1-23
Figure 1-9: Wetland I and H Impacts - Wetland Mitigation Location .................................................. 1-27
Figure 1-10: Wetland H Mitigation – Existing Conditions ..................................................................... 1-30
Figure 1-11: Wetland H Mitigation – Grading Plan ............................................................................... 1-32
Figure 1-12: Wetland H Mitigation – Profile .......................................................................................... 1-33
Figure 1-13: Wetland H Mitigation – Planting Plan ............................................................................... 1-35
Figure 1-14: Location of Dredging in the Merrimack River ................................................................... 1-44
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