Environmental Monitoring Report Semi-annual Report January 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. Angat Water Transmission Improvement Project – Tunnel 4 Semi Annual Environmental Monitoring Report 4 2018 July to December Environmental Monitoring Report Semi Annual December 2018 MWSS: ANGAT WATER TRANSMISSION IMPROVEMENT PROJECT (AWTIP) Project Number: 46362-002 March 2019 Disclaimer: This Semi-annual Environmental 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 judgements as to the legal or other status of any territory or area. i Angat Water Transmission Improvement Project – Tunnel 4 Semi Annual Environmental Monitoring Report 4 2018 July to December Contents 1 Introduction viii Background 2 Project Data 4 Project Implementation Progress 4 Overall Progress as of 31 December 2018 4 Site Works / Activities for the Period (as of December 2018) 8 Contractors Resources 10 Site visits/inspections by the supervision consultant to monitor compliance of the contractors and subcontractors 15 2 Compliance with ADB loan covenants and applicable government laws, regulations and requirements 16 Status of compliance with government environmental requirements: 16 3 Changes in project scope 23 4 Summary of Environmental Mitigations and Compensation Measures Implemented 24 Emission/Wastewater Discharge (Source) Monitoring Program (if relevant or required in the EMP) 35 Summary of Monitoring 35 Assessment 38 Water Quality Monitoring Program 38 Summary of Water Quality Monitoring for Bigte and Ipo River (July to December 2018) 38 Results of Bigte and Ipo River (July to December 2018) 38 Water Quality Results for Bigte River (July to December 2018) 42 Water Quality Results for Ipo River (July to December 2018) 64 Water quality in IDSSP 82 Assessment of Bigte River, Ipo River and IDSSP (July to December 2018) 85 Air and Noise Quality Monitoring Program 86 Summary of Air Quality Monitoring 86 Result of Ambient Air Quality Monitoring (September and November 2018) 88 Assesment3 for Air Quality Monitoring 91 Summary of Noise Quality Monitoring (July to December 2018) 91 Result of Noise Level Monitoring (September and November 2018) 92 Assesment3 for Noise Quality Monitoring (September and November 2018) 96 Summary of Sound Level Monitoring in General Construction Sites 96 ii Angat Water Transmission Improvement Project – Tunnel 4 Semi Annual Environmental Monitoring Report 4 2018 July to December Assessment for Noise Quality Monitoring (July to December 2018) 114 Results of Tunnel Air Quality Monitoring 114 Assessment for Indoor Air Quality Monitoring (July to December 2018) 117 Spoil Management and Monitoring Program 117 Summary of Sediment Quality of Spoil/Excavated Materials 117 Results of Spoil Sediment Quality 119 Assessment for Sediment Quality of Spoil / Excavated Material 123 Freshwater Monitoring Program (Wet Season) 123 Terrestrial Ecology Monitoring 124 Wet Season 124 5 Key Environmental Issues 128 Key activities implemented 128 Key Issues Identified 128 6 Complaints 133 Details of Complaint/s 133 7 Conclusion and Recommendation 134 Overall Progress of Implementation of Environmental Management Measures 134 8 Appendices 135 Site Works / Activities for the Period (July to November 2018) 135 Progress Photos (as of December 2018) 151 AWTIP Monitoring Matrix 159 Laboratory Results 177 Tree Cutting Permit 178 Terrestrial Ecology Monitoring Report 307 Related Documentation on Hazardous Materials 414 NCIP 425 Tunnel Geotechnical Profile 426 iii Angat Water Transmission Improvement Project – Tunnel 4 Semi Annual Environmental Monitoring Report 4 2018 July to December List of Tables Table 1. Contract Price for design and construction service ...........................................3 Table 2. Key information about the project ......................................................................4 Table 3. Key project progress ..........................................................................................4 Table 4. Workforce as of December 31, 2018 .............................................................. 10 Table 5. Filipino Workforce as of December 31, 2018 – by geographic location ......... 11 Table 6. Workforce as of December 31, 2018 – by Gender ......................................... 12 Table 7. Workforce as of December 31, 2018 – Dumagats ......................................... 12 Table 8. Workforce as of December 31, 2018– by Age Groups .................................. 13 Table 9. Staff requirement in the next 3 months .......................................................... 13 Table 10. Contractor: CMC di Ravenna ....................................................................... 14 Table 11. MAPOLCOM Construction ........................................................................... 14 Table 12. Trevi Foundation ........................................................................................... 14 Table 13. Don Vic Construction .................................................................................... 15 Table 14. Permits ......................................................................................................... 16 Table 15. Other Permits ............................................................................................. 19 Table 16. Safety Report as of December 31, 2018 ...................................................... 20 Table 17. Summary of Environmental Monitoring Programs Implemented .................. 33 Table 18. Water Quality of WTP effluent (July to December 2018 .............................. 36 Table 19. Bigte Creek Water Quality Sampling sites ................................................... 42 Table 20. Water Quality Results for SWB1 .................................................................. 45 Table 21. Water Quality Results for SWB2 .................................................................. 48 Table 22. Water Quality Results for SWB2A ................................................................ 51 Table 23. Water Quality Results for SWB3 .................................................................. 54 Table 24. Water Quality Results for SW3A .................................................................. 57 Table 25. Water Quality Results for SWSM1 ............................................................... 60 Table 26. Water Quality Results for SW2B .................................................................. 63 Table 27. Water Quality Sampling sites along Angat/ Ipo River .................................. 65 Table 28. Water Quality Results for SW IPO1 ............................................................. 68 Table 29. Water Quality Results for SW IPO2 ............................................................. 71 Table 30. Water Quality Results for SW IPO3 ............................................................. 74 Table 31. Water Quality Results for SW IPO4 ............................................................. 77 Table 32. Water Quality in IPO5 ................................................................................... 81 Table 33. Water Quality in IDSSP (Inside and Outside Curtain) .................................. 83 Table 34. Results of Ambient Air Quality Monitoring, September 2018 ....................... 89 Table 35. Ambient Air quality, November 2018 ............................................................ 90 Table 36. Noise level in Ipo Dam Compound, 2018 September .................................. 92 Table 37. Noise level in San Mateo Brgy. Hall, 2018 September ................................ 92 Table 38. Noise level in MWSS Bigte Compound, 2018 September ........................... 93 Table 39. Noise level in Ipo Dam Compound, 2018 November ................................... 94 Table 40. Noise level in San Mateo Brgy. Hall, 2018 November ................................. 95 Table 41. Noise level in MWSS Bigte Compound, 2018 November ............................ 95 Table 42. Sound levels in Bigte Construction Work Area 2018 July, morning ............. 97 Table 43. Sound levels in Ipo Construction Work Area 2018 July, evening (9:00 pm – 10:00 pm) .................................................................................................................... 100 iv Angat Water Transmission Improvement Project – Tunnel 4 Semi Annual Environmental Monitoring Report 4 2018 July to December Table 44. Sound levels in Ipo Work Area – Sitio Ipo (Vicinity of Watershed Building, across the Ipo Dam on 15 Aug 2018 (9:00 AM – 9:00 PM).......................................