Environmental Monitoring Report Semi-Annual Report July 2019 Philippines: Angat Water Transmission Improvement Project Prepared by the Metropolitan Waterworks and Sewerage System for the Asian Development Bank. This environmental monitoring report is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. AWTIP Tunnel 4 Semi Annual Environmental Monitoring Report 5 January to June 2019 Environmental Monitoring Report Semi Annual Report January – June 2019 ANGAT WATER TRANSMISSION IMPROVEMENT PROJECT (AWTIP) DESIGN AND CONSTRUCTION OF IPO TO BIGTE TUNNEL No. 4 (AWTIP-ICB-CW001) July 2019 ______________________________________________________________ AWTIP Tunnel 4 Semi Annual Environmental Monitoring Report 5 January to June 2019 Contents 1 Introduction 3 Background 3 Project Data 5 Project Implementation Progress 5 Overall Progress as of June 30, 2019 5 Contractors Resources 14 Site Visits/Inspections by the Supervision Consultant 17 2 Compliance with ADB Loan Covenants and applicable Government Laws, Regulations and Requirements 18 Status of Compliance with Government Environmental Requirements: 18 3 Changes in Project Scope 24 4 Summary of Environmental Mitigations and Compensation Measures 25 Review of CEMMP, IEE Compliance 25 Emission/Wastewater Discharge (Source) Monitoring Program (if relevant or required in the EMP) 39 Summary of Monitoring 39 Assessment 39 Water Quality Monitoring Program 42 Water Quality Monitoring Plan for Bigte and Ipo River 42 Sampling Stations of Bigte and Ipo River 42 Water Quality Results for Bigte Creek 42 Water Quality Results for Ipo River 58 Water Quality in IDSSP 71 Assessment of Bigte River, Ipo River and IDSSP (January to June 2019) 72 Air and Noise Quality Monitoring Program 73 Summary of Air Quality Monitoring 73 Result of Ambient Air Quality Monitoring 75 Assesment3 for Air Quality Monitoring (February 2019) 75 Result of Noise Level Monitoring February 2019) 77 Assesment3 for Noise Quality Monitoring (January to June 2019) 78 Summary of Sound Level Monitoring in General Construction Sites 78 Assessment for Noise Quality Monitoring (January to June 2019) 98 Results of Tunnel Air Quality Monitoring 98 Assessment of Indoor / Tunnel Air Quality Monitoring (January to June 2019) 100 Spoil Management and Monitoring Program 100 Summary of Sediment Quality of Spoil/Excavated Materials 100 Results of Spoil Sediment Quality 101 Management of Spoil 101 Freshwater Monitoring Program 109 Dry Season 109 Wet Season 112 5 Key Environmental Issues 115 Key Activities Implemented 115 Key Issues Identified 124 AWTIP Tunnel 4 Semi Annual Environmental Monitoring Report 5 January to June 2019 6 Complaint/s/Grievance/s 125 Details of Complaint/s 125 Grievance Case dated July 2, 2019 125 Grievance Case – result of investigation 126 Grievance Case Summary and Recommendation 131 Actions Taken 132 7 Conclusion and Recommendation 133 Overall Progress of Implementation of Environmental Management Measures 133 8 Appendices 134 Progress Photos 134 AWTIP Monitoring Matrix 142 Laboratory Results 149 Permits 213 Related Documentation on Hazardous Materials 232 Inventory and Management of Spoils 253 Aquatic Ecology Monitoring 267 Tunnel Geotechnical Profile 355 MMT Minutes of Meetings 356 Grievance Case Documentation 363 AWTIP Tunnel 4 Semi Annual Environmental Monitoring Report 5 January to June 2019 List of Tables Table 1. Contract Price for Design and Construction Service ........................................................................................ 4 Table 2. Key Information about the Project .................................................................................................................. 5 Table 3. Key Project Progress ....................................................................................................................................... 5 Table 4. Summary of Activities for Tunnel Excavation ............................................................................................... 6 Table 5. Summary of Activities at the Project Site ..................................................................................................... 10 Table 6. Workforce as of June 30, 2019 ................................................................................................................... 14 Table 7. Filipino Workforce as of June 30, 2019 – by geographic location................................................................. 14 Table 8. Workforce as of June 30, 2019 – by Gender ............................................................................................... 15 Table 9. Workforce as of June 30, 2019 – Dumagats ............................................................................................. 15 Table 10. Workforce as of June 30, 2019 – by Age Groups ..................................................................................... 15 Table 11. Staff requirement in the next 3 months ...................................................................................................... 16 Table 12. Contractor: CMC di Ravenna .................................................................................................................. 16 Table 13. Donvic Construction .................................................................................................................................. 17 Table 14. Aquatrade ................................................................................................................................................ 17 Table 15. Permits Required for AWTIP ................................................................................................................. 18 Table 16. Other Permits ......................................................................................................................................... 21 Table 17. Safety Report as of June 30, 2019 .......................................................................................................... 22 Table 18. Summary of Mitigation and Control Measures ........................................................................................ 25 Table 19. Summary of Environmental Monitoring Programmes Implemented ............................................................ 37 Table 20. Water Quality of WTP effluent (January to June 2019) ........................................................................... 40 Table 21. Water Quality Results for SWB2A ......................................................................................................... 46 Table 22. Water Quality Results for SWB3 ............................................................................................................. 49 Table 23. Water Quality Results for SW3A ............................................................................................................ 52 Table 24. Water Quality Results for SWSM1 ......................................................................................................... 55 Table 25. Water Quality Results for SW IPO1 ....................................................................................................... 59 Table 26. Water Quality Results for SW IPO2 ....................................................................................................... 62 Table 27. Water Quality Results for SW IPO3 ....................................................................................................... 65 Table 28. Water Quality Results for SW IPO4 ....................................................................................................... 68 Table 29. Water Quality in IDSSP (Inside the Silt Curtain) ................................................................................... 71 Table 30. Results of Ambient Air Quality Monitoring, February 2019 ................................................................... 76 Table 31. WHO Maximum Allowable Noise Level in General Areas .................................................................. 77 Table 32. Noise level in Ipo Dam Compound (February 2019) ................................................................................ 77 AWTIP Tunnel 4 Semi Annual Environmental Monitoring Report 5 January to June 2019 Table 33. Noise level in San Mateo Brgy. Hall (February 2019) ............................................................................ 77 Table 34. Noise level in MWSS Bigte Compound February 2019) .......................................................................... 78 Table 35. Sound Level Monitoring ( January 9, 2019, 9:00 PM onwards) .............................................................. 79 Table 36. Sound Level Monitoring (February 4, 2019, 9:00 PM onwards) .............................................................. 81 Table 37. Sound Level Monitoring (March 25, 2019, 9:00 PM onwards) ............................................................... 84 Table 38. Sound Level Monitoring (April 12, 2019) ............................................................................................... 88 Table 39. Sound Level Monitoring (May 2019) ......................................................................................................