CONSTRUCTION QUALITY ASSURANCE PLAN - T-117

1 CONSTRUCTION QUALITY ASSURANCE plan PHASE 1: Sediment and Upland Cleanup Lower Duwamish Waterway Superfund Site Terminal 117 Early Action Area October 5, 2012 CONSTRUCTION QUALITY ASSURANCE plan PHASE 1: Sediment and Upland Cleanup Lower Duwamish Waterway Superfund Site Terminal 117 Early Action Area October 5, 2012 PREPARED BY: i Table of Contents 1 Introduction .. 1 1 Activities Addressed by this plan .. 1 1 Schedule .. 1 2 Document Organization .. 1 3 2 Project Organization and 2 1 Teams.

2 2 1 Personnel Responsibilities .. 2 1 Environmental Protection Agency .. 2 1 Port of Seattle .. 2 2 Contractor .. 2 3 Contractor Licensing and 2 4 Contractor Personnel .. 2 5 Port Consultants .. 2 8 CONSTRUCTION Support Consultants to Port .. 2 9 3 Reporting Activities .. 3 1 Pre CONSTRUCTION Documentation .. 3 1 Removal Action Work plan .. 3 1 Project Approach .. 3 2 Baseline Schedule .. 3 3 Site specific CONSTRUCTION Health and Safety Plan3 3 Traffic control plan .. 3 3 Pollution Prevention plan .

3 3 3 Erosion and Sedimentation control plan .. 3 3 Green and Sustainable Remediation plan .. 3 4 CONSTRUCTION QUALITY control 3 4 Transportation and Disposal plan .. 3 4 Survey plan .. 3 5 Excavation Support System plan .. 3 5 CONSTRUCTION Water Management plan .. 3 5 Settlement Monitoring plan .. 3 5 Dewatering plan .. 3 6 Earthwork plan .. 3 6 Soil Stockpile plan .. 3 6 Dredging plan .. 3 7 Demolition plan .. 3 7 Deconstruction plan .. 3 8 Vessel Management plan .. 3 8 Sheet Pile Driving plan .

4 3 8 CONSTRUCTION QUALITY ASSURANCE plan ii Final Water QUALITY Monitoring plan .. 3 8 CONSTRUCTION Checklist .. 3 9 Contractor s Daily CONSTRUCTION Report Form .. 3 9 Final RAWP .. 3 9 CONSTRUCTION Documentation .. 3 9 Contractor s Daily CONSTRUCTION Report .. 3 9 Weekly QUALITY ASSURANCE Report .. 3 10 Water QUALITY Monitoring Summaries .. 3 11 Air, Noise, and Light Monitoring Summaries .. 3 11 Hydrographic and Topographic Survey Reporting .. 3 11 Waste Characterization Testing Reports and Manifests.

5 3 12 Import Material Characterization Reports .. 3 13 Field Change Documentation .. 3 13 Post CONSTRUCTION Documentation .. 3 14 Record Drawings, Manuals, and Certifications .. 3 14 Pre Final Inspection and Punch List .. 3 14 Final Inspection Report .. 3 14 4 Removal Action CONSTRUCTION Elements .. 4 1 Summary of Inspection and Monitoring Tasks .. 4 1 Survey Controls and Project Limits .. 4 4 Description .. 4 4 QUALITY control Measures .. 4 5 Environmental Controls, Monitoring, and Corrective Action 4 5 Installation of Sheet Pile Wall.

6 4 5 Description .. 4 5 QUALITY control Measures .. 4 6 Environmental Controls, Monitoring, and Corrective Action 4 6 Demolition and Removal .. 4 7 Description .. 4 7 QUALITY control Measures .. 4 7 Environmental Controls, Monitoring, and Corrective Action 4 8 Dredging and Excavation .. 4 8 Description .. 4 8 QUALITY control Measures .. 4 9 Achieving Specified Dredging Depths, Slopes, and Limits 4 9 Hydrographic and Topographic Surveys .. 4 9 Dredge Positioning Controls .. 4 10 Minimizing Residuals and Turbidity from In water Activities.

7 4 10 Environmental Controls, Monitoring, and Corrective Action4 11 CONSTRUCTION QUALITY ASSURANCE plan iii Achieving Toxic Substances control Act Soil Excavation 4 11 Achieving Removal Action Levels .. 4 11 Transportation and Disposal of Dredged Sediments .. 4 21 Description .. 4 21 QUALITY control Measures .. 4 21 Waste Tracking .. 4 22 Environmental Controls, Monitoring, and Corrective Action4 22 Shoring .. 4 23 Description .. 4 23 QUALITY control Measures .. 4 23 Environmental Controls, Monitoring, and Corrective Action4 23 Stockpiling and Dewatering of Soil.

8 4 24 Description .. 4 24 QUALITY control Measures .. 4 24 Environmental Controls, Monitoring, and Corrective Action4 24 Characterization of North Building Soils .. 4 26 Description .. 4 26 QUALITY control Measures .. 4 26 Environmental Controls, Monitoring, and Corrective Action4 27 Placement of Soil Backfill .. 4 27 Description .. 4 27 QUALITY control Measures .. 4 27 Environmental Controls, Monitoring, and Corrective Action4 28 Placement of Sediment Backfill .. 4 29 Description.

9 4 29 QUALITY control Measures .. 4 29 Thickness and Extent .. 4 30 Verification of Import Material 4 30 Limiting Turbidity Generation .. 4 31 Environmental Controls, Monitoring, and Corrective Action4 31 Reuse of Existing Backfill .. 4 32 Description .. 4 32 QUALITY control Measures .. 4 32 Environmental Controls, Monitoring, and Corrective Action4 32 Pile Driving .. 4 32 Description .. 4 32 QUALITY control Measures .. 4 32 Environmental Controls, Monitoring, and Corrective Action4 33 Relocation of South Park Marina Floats.

10 4 33 Description .. 4 33 QUALITY control Measures .. 4 34 CONSTRUCTION QUALITY ASSURANCE plan iv Environmental Controls, Monitoring, and Corrective Action4 34 5 References .. 5 1 CONSTRUCTION QUALITY ASSURANCE plan v List of Tables Table 4 1 CONSTRUCTION Elements and Monitoring Table 4 2 Removal Action Levels Table 4 3 Pre Confirmation Data from Nine Deep Excavation Grid Cells Included in Confirmation Dataset Table 4 4 Gradation Requirements for Backfill Materials List of Figures Figure 2 1 CONSTRUCTION Management Team Organization Chart Figure 4 1 Excavation plan Figure 4 2 Confirmation Sampling Locations, Upland Grid.