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48325-001: 150 MW Burgos Wind Farm Project Initial Environmental Examination Project Number: 48325-001 July 2015 PHI: 150 MW Burgos Wind Farm Project Transmission Line and Jetty Section 7 – Marine Ecology and Seawater Quality Section 8 – Water and Drainage Assessment Section 9 – Soil and Groundwater Contamination Section 10 – Air Quality Assessment (Part 4 of 14) Prepared by EDC Burgos Wind Power Corporation for EDC Burgos Wind Power Corporation and the Asian Development Bank. The initial environmental examination 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. Your attention is directed to the “Terms of Use” section of this website. 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. Table of contents 1. Introduction................................................................................................................................. 1-1 2. Project Description ..................................................................................................................... 2-1 3. Assessment Methodology .......................................................................................................... 3-1 4. Land Use Assessment ............................................................................................................... 4-1 5. Noise and Vibration Assessment ............................................................................................... 5-1 6. Biodiversity and Conservation ................................................................................................... 6-1 7. Marine Ecology and Seawater Quality ....................................................................................... 7-1 7.1 Introduction ...................................................................................................................... 7-1 7.2 Assessment Methodology ................................................................................................ 7-1 7.3 Baseline Environmental Conditions ............................................................................... 7-10 7.4 Operation Phase Assessment ....................................................................................... 7-28 7.5 References ..................................................................................................................... 7-29 Table index Table 7-1 GPS coordinates of the marine sampling sites (November 2014) .................................. 7-4 Table 7-2 Comparison of GPS coordinates of the 2012 and 2014 marine surveys in reference to the Burgos EBWPC Jetty ............................................................................ 7-5 Table 7-3 Categories of coral reef health based on percent cover of hard coral (Gomez et al. 1981) ........................................................................................................................... 7-6 Table 7-4 Reef fish status categories and their corresponding values (after Hilomen et al. 2000 and Nañola et al. 2006) .......................................................................................... 7-7 Table 7-5 Comparison of coral genera found in the reefs around the EBWPC Jetty in Burgos, Ilocos Norte ...................................................................................................... 7-11 Table 7-6 Species richness of reef fish in four survey sites in Burgos, Ilocos Norte ..................... 7-16 Table 7-7 Diversity and percent cover of macrobenthic algae on the reef crest on both sides of the jetty in Burgos, Ilocos Norte ....................................................................... 7-19 Table 7-8 Mean densities (no. of animals/ 0.02 m2) and relative abundances (%) of soft- bottom fauna observed in Burgos, Ilocos Norte (November 2014) ............................... 7-24 Table 7-9 Primary productivity at the coastal area fronting the jetty at Burgos, Ilocos Norte (November 2014) ........................................................................................................... 7-25 Table 7-10 Mean (no. of cells/m3) and relative densities (%) of phytoplankton observed at four sampling stations in Burgos, Ilocos Norte (November 2014) ................................. 7-26 Table 7-11 Mean (no. of inds./m3) and relative mean densities (%) of zooplankton recorded at four sampling stations in Burgos, Ilocos Norte (November 2014) ............................. 7-27 Table 7-12 Levels of six water quality parameters measured at four stations at the vicinity of the jetty in Burgos, Ilocos Norte (November 2014) .................................................... 7-27 GHD | Report for EDC Burgos Wind Power Corporation - EDC Transmission Line and Jetty Projects, 71/12098 | i Table 7-13 Key impacts and proposed mitigation/enhancement measues ..................................... 7-29 Figure index Figure 7-1 Location of survey sites for the post-construction marine ecology and water quality assessment of the EBWPC Jetty (November 2014) ............................................ 7-3 Figure 7-2 Map of proposed Jetty Site in Burgos, Ilocos Norte showing reference points for directly impacted area (red), indirectly impacted area (blue), and possibly impacted areas ................................................................................................................ 7-4 Figure 7-3 Profile of hard (live) coral cover and that of other benthos in four reef sites in Burgos, Ilocos Norte (November 2014) ......................................................................... 7-14 Figure 7-4 A comparison of live and dead coral and combined cover of other lifeforms in four reef sites in Burgos, Ilocos Norte (November 2014) .............................................. 7-14 Figure 7-5 Comparison of average cover of live, dead coral and abiotics between the pre- construction assessment in June 2012 and the current (November 2014) assessment .................................................................................................................... 7-15 Figure 7-6 Profile on the generic diversity of corals in the reefs within the vicinity of the Burgos jetty before (June 2012) and after jetty construction (November 2014) ............ 7-15 Figure 7-7 Comparison of species richness across reef sites fronting the Burgos jetty ................. 7-16 Figure 7-8 Comparison of abundance of different fish groups in four reef sites in front of the jetty in Burgos, Ilocos Norte (November 2014) ............................................................. 7-17 Figure 7-9 Comparison of estimated fish biomass on four reef sites fronting the jetty (November 2014) ........................................................................................................... 7-17 Figure 7-10 Relative abundance of different fish groups on the reefs fronting the jetty based on population counts (left) and biomass (right) ............................................................. 7-18 Figure 7-11 Most abundant fish families on the reefs fronting the temporary jetty in Burgos, Ilocos Norte based on population counts and biomass ................................................. 7-18 Figure 7-12 Mean percent cover and relative abundance of macrobenthic algal groups found on the high-energy reef crest in the vicinity of the temporary jetty in Burgos, Ilocos Norte (November 2014) ....................................................................................... 7-20 Figure 7-13 Age distribution and educational attainment of fishers in Bgry. Ablan, Burgos, Ilocos Norte (November 2014) ....................................................................................... 7-22 Figure 7-14 Number of years fisher-respondents in Bgry. Ablan spent on fishing (left) and a profile on livelihood (right) of respondents showing their dependence on fishing (November 2014) ........................................................................................................... 7-22 Figure 7-15 Comparison of CPUE values of common fishing activities among Ablan fishers (November 2014) ........................................................................................................... 7-23 GHD | Report for EDC Burgos Wind Power Corporation - EDC Transmission Line and Jetty Projects, 71/12098 | ii 7. Marine Ecology and Seawater Quality 7.1 Introduction In June 2012 an assessment of the marine ecosystem fronting the site of the proposed Jetty of the EDC-Burgos Wind Project Corporation (EBWPC) was carried out by the Mariano Marcos State University (MMSU) on behalf of First Balfour, and included baseline assessments of coral reefs and associated reef fish and other fauna, and seaweeds within the 1 km radius from the proposed Jetty site. A post-construction assessment of the marine environment fronting the jetty two years after, in November 2014, was made to evaluate the bio-physical condition of the macrobenthic and fish communities associated with the coral reef ecosystem. The survey also obtained information on the state of the nearshore fishery and fishers’ perceptions about the state of their coastal resources. Furthermore, sampling for soft-bottom fauna was undertaken, as well as collection of planktonic organisms and estimation of primary productivity
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