1 Marine Ecosystem v aseline Study...Figure 1 Vicinity Map Figure 2 Sampling Site Map.AIA SOU T!JH IN-Environmental Conisultants. EXECUTIVE SUMMARY ... This turtle species is one of

; ~~~E965Vol. 1

Marine Ecosystemv aseline Study

for theNorthWind Project

Municipality of Bangui, Province of Ilocos Norte

I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Prepared for: Prepared by:

NorthWind GAIA SOUTH, INC.< :7. Environmental Consultants

Un, 310 riollbee Plaza Bldg. Emerae.r -i' ---i Fr. Mont J ett -

.. X. P X.. _,- 4. _ '-F -

.~ @-r . .- - , ; May 20, 2064> .

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TABLE OF CONTENTS

Table of Contents

List of Tables

List of Figures

Executive Summary

I. Introduction ........................................... .1

II. Methodology .............................................. 2

2.1 Broad Area Survey ............................................ 2

2.2 Detailed Survey (Line Intercept Transect method) ............................................ 3

2.3 Fish Species Listing ........................................... 3

Ill. Results and Discussion ............................................ 3

3.1 Broad Area Survey ........................................... 3

3.1.1. Bangui area ............................................ 4

3.1.2. Burgos area ............................................ 4

3.2 Detailed Survey (Line Intercept Transect method) ............................................ 5

3.2.1 Bangui area ............................................ 5

3.2.2 Burgos area ............................................ 5

3.3 Fish Species Listing ...... 5.....................................5

3.3.1. Bangui area ............................................ 6

3.3.2. Burgos area ............................................ 6

3.3.3. Market Survey ............................................ 7

3.4 Species of Special Interest ............................................ 7

IV. Impact Assessment and Mitigating Measures .......................................... 7

V. References ........................................... . 18

Plates

Enr GAeitl SC oJ nsu,-h N-- Environmental Consultants

Marine Ecosystem Baseline Study for the NorthWind Project

Municipality of Bangui, Province of llocos Norte

LIST OF TABLES

Table I GPS readings of survey sites, including important features, NorthWind

Project site & Reference sites, Bangui Bay, llocos Norte

Table 2 Rapid Assessment of Benthic Communities along proposed NorthWind

Project Site & Reference Sites, Bangui Bay, Ilocos Norte, April 2004

Table 3 Results of the Specific Survey for Lifeforms using the Line Intercept

Method in the Reference Site (Brgy. Capurpuraoan, Burgos), April 22,

2004

Table 4 List of Coral Genera observed in the Reference Site (Brgy.

Capurpuraoan, Burgos), April 23, 2004

Table 5 Fish Species Listing and Area Occurrences from Manta Tow and Diving

Surveys, NorthWind Project site & Reference sites, Bagui Bay, llocos

Norte, April 2004.

Table 6 Fish Species List based on Market Surveys, Bangui, llocos Norte, April

2004.

Table 7 List of Possible Impacts and Suggested Mitigating Measures for the

NorthWind Project, Bangui, llocos Norte

LIST OF FIGURES

Figure 1 Vicinity Map

Figure 2 Sampling Site Map

.AIA SOU T!JH IN-Environmental Conisultants

EXECUTIVE SUMMARY

A 9-kilometer stretch in the foreshore area of Bangui Bay, llocos Norte had been found to be

feasible for hamessing wind energy for power generation. An Initial Environment Examination

(IEE) Checklist was prepared to list the possible impacts of the project on the environment and

the application for an Environmental Compliance Certificate (ECC) from the Department of

Environment and Natural Resources (DENR) has been granted. A marine ecosystem baseline

study was thought needed to complement the IEE for a more integrated and environmentally

sound project implementation. Northwind Power Development Corporation (NWPDC), the

company that was formed to tap the wind power has commissioned Gaia South, Inc.,

Environmental Consultants to conduct the study.

The assessment was carried out within the 9-kilometer stretch of Bangui Bay within the project

site covering 5 communities of Bangui. Additional study sites including 2 barangays in Burgos,

llocos Norte were included in the study as reference sites. A broad area survey was conducted

through a Manta Tow. Validated reef areas in the reference sites were surveyed for specific

features through the Line Intercept Transect (LIT). Fish population was recorded through a

market survey and actual field observation.

In general, the substratum of the subtidal zone of the proposed project site within Bangui was

dominated by abiotic components such as sand and rocks. Based on the condition categories

suggested by Gomez et al. (1981), the area would fall under the "poor" category. In the 2

Burgos sites however, considerable live hard coral cover was observed in Brgy. Nagsurot and

Brgy. Capurpuraoan. These 2 sites are about 2000m west of the proposed project site.

There was no coral reef area within the project site in Bangui. In the Burgos area however, live

coral cover in the area can be considered fair. Some 17 genera were identified belonging to 8

families, majority of which are massive or head type, the usual coral colony formation on areas

exposed to strong waves. Results of the detailed site survey within Barangay Capurpuraoan,

Burgos also indicates that macroalgae accounts to more than 60% of the total benthic cover of

the area. Most numerous of the macroalgae are Sargassum, Padina, Eucheuma,

Chlorodesmis, Neomeris, Liagora, Galaxuara, Gelidiella and Distyosphaeria.

Marine Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of llocos Norte

In general, more species of fish were observed in the Burgos area as compared to the Bangui

area. In the Bangui area (directly adjacent the project site), a total of 26 species from 10

families of fish were observed and listed during the manta tow survey of the benthic substratum.

These were highly mobile and medium to large sized species, making them observable during

manta tows. In contrast to Bangui, more species of fish (total of 43 species from 10 families)

were observed in Burgos from a combination of the manta tow and diving surveys. Fish

observed included medium to large sized mobile species, and smaller cryptic species, which are

more observable during diving surveys.

A total of 36 fish species from 20 families were observed in the market of Bangui from the twomarket surveys conducted. Of these, 2 are not strictly marine species (milkfish and Tilapia) and

at least 5 are not commonly targeted or marketed (Synodus variegatus, Abudefduf vaigiensis, A.

sexfasciatus, Thalassoma quinquevittatum and T. Iutescens). Accordingly, the reef fishes being

sold in the market are mainly from nearby Pagudpud town.

Within the length of the coastline of the project site, sedimentation from the construction and

establishment of the windmills is expected to have minimal impacts. The existing dominant

substratum in the area is sand and rock and no significant biotic components were observed.

However, it must be noted that local subsistence fishers for octopus fishing utilize the rocky reef

structures in Sitio Bantoc, Brgy. Baruyen. This area is outside the Project site and will not be

adversely affected by the Project.

Although dust generation during construction is minimal, existing coral reefs in the municipalities

of Burgos and Pagudpud (not surveyed), although beyond the project area, may possibly be

impacted. It is possible that the sediments that may be actively deposited into the subtidal zone

within the project site may easily be re-suspended and transported onto the adjacent coral

reefs. This causes smothering and may affect the live corals in the area.

During the manta tow surveys, a single sub-adult green turtle Chelonia mydas was observed in

Sitio Suyo, Baruyen. This turtle species is one of the 5 species found in the Philippines and is

an endangered species (PCP, 1993). The species is said to be common in the area and there

are reports of nestings by local residents. Marine turtle hatchlings are attracted by light.

Increased activity at the project site during construction and illumination from perimeter lights at

the project site may disorient the hatchlings and cause them to travel landward instead of off-

4TN GAlA. SOITh, INC, Executive Summary - iiEnvironmental Consultants

Marine Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of [locos Norte

shore after they emerge from their nest. It is recommended that a detailed study on the matterbe undertaken. Depending on the results of such a study, assistance can be requested fromconcerned agencies such as the Pawikan Conservation Project of the Protected Areas andWildlife Bureau - Department of Environment and Natural Resources.

Possible impacts of the project and the mitigative measures are summarzed in the followingtable.

Summary of Possible Impacts on the Marine Environment & Mitigating Measures, NorthWindProject, Bangui, llocos Norte

Project Phase Possible impact on marine Mitigative/Enhancement measuresenvironmentPreconstruction 1. the east-northeast wind direction will carry

levelling of construction sites particulate matters away from the sea

2. putting-up of dust barriers on construction sitesConstruction Generation of dust that may partheaeast-northeast wind direction will carry

vehicular traffic along existing Genterat cofrdust tatd mayga particulate matters away from the seadirt access road

suspension of fine sand particles 2. Construction activities during the dry seasonduring increased activity in the area

1. Green turtle nesting period is from March-Mayincreased activity during construction Effect on the nesting of turtlesmay disorient turtle hatchlings 2. Limit construction activities from March-May

Operation 1. A detailed study on the presence of turtle nestingsites should be done

Use of perimeter lights at the site 2. Use of perimeter lights at the project site duringmay disorient turtle hatchlings; nesting period should be limitedincreased public access to beacharea

3. Public access to beach area where turtles aresighted should be controlled especially duringnighftime.

C-A41 SOUTH INC Executive Summary - id- Environmental Consultants

MARINE ECOSYSTEM BASELINE STUDY FOR THE NORTHWIND PROJECT

MUNICIPALITY OF BANGUI, PROVINCE OF ILOCOS NORTE

INTRODUCTION

A 9-kilometer stretch in the foreshore area of Bangui Bay, [locos Norte had beenfound to be feasible for hamessing wind energy for power generation (Figure 1 -Vicinity Map). Northwind Power Development Corporation (NWPDC) wasformed solely to tap the wind power. The incorporation of NWPDC is encouraged

by the Philippine Government as it pushes for the development of altemativepower sources that will wean dependence on imported fuel and environment-friendly.

An Initial Environment Examination (IEE) Checklist was prepared to list thepossible impacts of the project on the environment. The site is geologically

characterized to be of black core and beach sand with a 0-3% slope (NorthwindProject IEE, 2000). Except for a few grasses, trees and vegetation is nil on theProject area and no community displacement will take place. Positive impactsinclude increase in value of surrounding property, possible increase on localinvestments as well as a boost in the local tourism industry.

The application for an Environmental Compliance Certificate (ECC) from theDepartment of Environment and Natural Resources (DENR) was hence granted.However, given the proximity of the project site to the marine environment, amarine ecosystem baseline study was thought needed to complement the IEE fora more integrated and environmentally sound project implementation. GaiaSouth, Inc., Environmental Consultants was commissioned by NWPDC to do thestudy.

4 GAIA SOUTH INC. Page - 1Environmental Consultants



II. METHODOLOGY

Methodologies used for marine resource assessments differ depending on thebaseline knowledge on the site, resources involved and objectives of study.

Resource map by the National Mapping and Resource Information Authority(NAMRIA) showed a limited reef area within Bangui Bay. The project vicinitymap further delimits the area for the assessment within the 9-kilometer stretch ofbeach area covering 5 communities of Bangui and 2 barangays in Burgos, IlocosNorte. At least one site in Baruyen (Sitio Bantoc) and the Burgos sites are

approximately 2,000m west of the Project but were included in the study asreference sites. It should also be noted, that reef structures are only expectedwithin the Burgos area.

To validate the Project location and resource map from NAMRIA, a broad area

survey was conducted through a Manta Tow. Validated reef areas weresurveyed for specific features through the Line Intercept Transect (LIT). Fishpopulation was recorded through a market survey and actual field observation.

2.1 BROAD AREA SURVEY

A modified manta tow survey (English et al., 1994) was conducted to assess thesubtidal zone from Barangay Abaka, Bangui to Barangay Capurpuraoan, Burgoswithin the Bangui Bay area of llocos Norte from 21 to 22 April 2004. Figure 2shows the sampling sites for the study. A motorized outrigger boat towed anobserver and estimates of the different benthic categories within a five-meterwide band were recorder on an underwater slate. GPS readings were taken andrecorded at the start and end of each tow using a Magellan GPS. Each towlasted for 2 minutes and covered an approximate length of 200 meters. Thepercentage cover of live hard corals, soft corals, dead corals, algae and abioticcomponents (i.e. sand and rubble) were estimated during each tow. The relativereef condition was determined based on the categories suggested by Gomez etal. (1981):

G4,1i SOUT71. lIC. Page - 2Environmental Consultants

Bangui Bay

00 LIT

Cai&$15uraoan rProject SiteCapurpuraoan B~Eanltoc

\ ssyO t t - J ~~~~~~~~~~~~~~~~AbacaNagsurot / ~ ~ ~ J - t

Baruyen Banbanh -J River It-

X Taguiporo 1.v__ -/ f Manayanr

1,, 1 > =- _t LEGEND:

- N I nm Line Intercept Transect (LIT)

N- N \ X _m Survey SitesN. N, a *Proposed Wind Turbines

Municipality o?Bucgos /

Drawn not to scale

-aR GAIA SOUTH 1. ItC.Figure 2: Sampling Site Map Emnironmental Consultanits



Excellent - >75% live coral cover

Good - 50-74.9% live coral cover

Fair - 25-49.9% live coral cover

Poor - < 25% live coral cover

2.2 DETAILED SURVEY (LINE INTERCEPT TRANSECT METHOD)

A 50-meter metered transect line was haphazardly set up perpendicular to thebeach area in Brgy. Capurpuraoan, Burgos (GPS reading: 18°31.023N,

120°40.046E). Divers in SCUBA gear move along the transect line recording alllife forms intercepted by the metered tape (English et a/., 1994). Percent cover

of each life form is computed using the formula:

Percent Cover = Total lenath of each category X 100

Length of transect

Coral cover is classified based on categories by Gomez et al. (1981).

2.3 Fish Species Listing

A listing of fish species was constructed based on actual observations ofoccurring species during manta tows and diving surveys, and based on fishmarket surveys in the town proper of Bangui. In both cases, fish were identifiedto the lowest possible taxon.

III. RESULTS AND DISCUSSION

3.1 BROAD AREA SURVEY

A total of 10 tows were conducted for the rapid area survey of the project siteincluding some references sites in Bangui Bay. The tows were distributed within

GA!A S3JTH INC. Page - 3Envionmental Consultants



the length of the 9 km coastline of the proposed project site as well as some

areas beyond the project site including Barangays Nagsurot and Capurpuraoan

in Burgos. Locations and coordinates of the manta tows are listed in Table 1.

Each tow covered approximately 200 meters and was situated within about 10 to

30 meters from the shore depending on depth and visibility. Depths covered by

the tows ranged from 10 to 30 feet.

3.1.1. Bangui area

In general, the substratum of the subtidal zone of the proposed project site within

Bangui was dominated by abiotic components such as sand and rocks (Table 2).

Sand was the dominant benthic substratum in Barangays Abaka, Masikil,

Manayan, Banban and Baruyen. Sitio Bantoc in Baruyen has rocks covered with

algae as the dominant benthic lifeform. About 10%-25% live coral cover was

observed in Sitio Bantoc, Baruyen. Although still within Bangui municipality, this

particular site is no longer within the Project site.

Based on the condition categories suggested by Gomez et a/. (1981), the area

would fall under the "poor" category. However, it must be noted that virtually the

entire length of the coastline of the proposed project site did not have any form of

reef and was dominated by sand. Hence, the proposed categories mentioned

above may be not appropriate in this case.

3.1.2. Burgos area

The coral area in Sitio Bantoc, Baruyen is a part of a continuous reef area within

Burgos. Considerable live hard coral cover was observed in Brgy. Nagsurot and

Brgy. Capurpuraoan (Table 2). These 2 sites are beyond the proposed project

site. The highest estimates of percentage live hard coral were observed in Brgy.

Capurpuraoan. This area falls under the "fair" category.

GAA SOUTH lJC. Page - 4>- Env-imnmental Consultants



3.2 DETAILED SURVEY (LINE INTERCEPT TRANSECT METHOD)

3.2.1 Bangui area

There was no coral reef area within the Project site in Bangui.

3.2.2 Burgos area

The detailed survey of the benthic biota was done to gain insight of the benthic

profile close to the project site. Results of the detailed site survey within

Barangay Capurpuraoan, Burgos are shown in Table 3. Macroalgae accounts to

more than 60% of the total benthic cover of the area. Most numerous of the

macroalgae are Sargassum, Padina, Eucheuma, Chlorodesmis, Neomeris,

Liagora, Galaxuara, Gelidiella and Distyosphaeria. Although Eucheuma is an

llocano delicacy, no macroalgal harvesting is being done on the area.

Live coral cover is 26.74% of the transect laid, indicating that coral cover in the

area is fair (Gomez et al., 1981). There are 17 genera identified belonging to 8

families, majority of which are massive or head type, the usual coral colony

formation on areas exposed to strong waves (Veron, 1986; Table 4).

Of the other benthic lifeforms, the stinging fire coral, Millepora, is the most

dominant accounting for more than 5% of the whole benthic cover. Fire corals

are non-reef forming corals and are quite sturdy on reefs with strong tidal

currents.

3.3 FISH SPECIES LISTING

A combined overall total of 52 species from 17 families of fish were recorded

during the manta tow and diving surveys (Table 5). Of these, 9 are considered

as target species, 3 were indicator species and 40 were major species (Table 5).

Target species or commercially important species are economically important

GAI. SCOJTH, NC Page - 5Environmental Consultants


Municipality of Bangui, Province of liocos Norte

fish that are targeted in fisheries (i.e. surgeonfishes and rabbitfishes). Indicator

species are fish that are highly associated with their habitats and environment

(i.e. butterflyfishes) such that their presence or absence may be indicative of the

general condition of the reef in the area. Major species are small fish that occupy

important niches in the reef and are important links in the trophic food chain (i.e.

damselfishes and wrasses). In general, more species of fish were observed in

the Burgos area as compared to the Bangui area.

3.3.1. Bangui area

In the Bangui area (directly adjacent the project site), fish species were observed

and listed during the manta tow survey of the benthic substratum. No fish were

observed during tows from Abaka up to the boundary of Baruyen (a total of 5

tows; Table 1) except for a single crocodile longtom (Tylosurus crocodilus). This

is not surprising since the dominant substratum in these areas was sand. Fish

were observed during manta tows from Sitio Suyo, Baruyen up to the boundary

of Brgy. Nagsurot (in Burgos) (a total of 4 tows; Table 1) where a mix of coral

and rocky reefs occurred. A total of 26 species from 10 families of fish were

observed. These were highly mobile and medium to large sized species, making

them observable during manta tows.

3.3.2. Burgos area

Fish were observed from a combination of the manta tow and diving surveys in

the Burgos area. In contrast to Bangui, more species of fish were observed in

Burgos with a total of 43 species from 10 families (almost 2 times that of the

Bangui area fish list; Table 5). Fish observed included medium to large sized

mobile species, and smaller cryptic species, which are more observable during

diving surveys. Percentage coral cover in the Burgos area is relatively higher

than the Bangui area. Coral cover in the Bangui area is limited to that found

beyond the Project site, in Sitio Bantoc, Baruyen. This accounts for the

occurrence of a greater number of reef fishes in the Burgos area, including the 3

Llg GAIA SOUTi. INC. Page - 6-- _ Emnronmental Consultants



indicator species observed (Chaetodontidae: Chaetodon kleinii, C. melannotus

and C. vagabundus).

3.3.3. Market Survey

A total of 36 fish species from 20 families were observed in the market of Bangui

from the two market surveys conducted (Table 6). Of these, 2 are not strictly

marine species (milkfish and Tilapia) and at least 5 are not commonly targeted or

marketed (Synodus variegatus, Abudefduf vaigiensis, A. sexfasciatus,

Thalassoma quinquevittatum and T. Iutescens). Majority of the volume of fish

being sold in the market were pelagic species such as tunas and scads. And

according to a local vendor, the reef fishes being sold in the market are mainly

from Pagudpud town. It was noted however, that at least 7 species in the market

were also observed during the manta tow and diving surveys (Table 6).

3.4 SPECIES OF SPECIAL INTEREST

During the manta tow surveys, a single sub-adult green turtle Chelonia mydas

was observed in Sitio Suyo, Baruyen. This animal is one of the 5 species found

in the Philippines and is an endangered species (PCP, 1993). It is likely that the

species utilized the area as a feeding ground (i.e. algae) during its sub-adult

stage. However, the species is said to be common in the area and there are

reports of nestings by local residents. This needs to be verified and if validated

may have implications on the construction of the windmills.

IV. IMPACT ASSESSMENT AND MITIGATING MEASURES

Wind energy as power source is considered an environment-friendly altemative

to fossil fuel. Neither gas nor liquid emission that could impact marine

ecosystems is expected during its operation. Since the area is made up of core

sand, dust generation is expected to be minimal. This may come from the

suspension of fine sand due to winds and increased human activity in the area

GAiA T!:, ItNG. Page - 7Envimnmental Consultants

Marine Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of liocos Norte

during the construction period. Vehicular traffic along the dirt access road to theproject site can also contribute to dust generation. This is not very significanthowever, since construction materials will be transported to the Project site bysea via landing craft transport (LCT).

Particulate matters from dust generation have the potential of increasing waterturbidity. Turbid waters are not favorable for coral growth as it decreasessunlight and could smother coral polyps. Macroalgae, which serves both as foodand shelter of marine fishes and other marine fauna could also be smothered bydust particulates that could find its way to the sea.

The potential impact of dust generation that may be associated with the projectwill be present only during the construction period and thus, is temporary. Theoverall contribution of the project to the overall increase in water turbidity can beconsidered minimal. It is noted that the Banban River, which drains into BanguiBay is said to contribute significantly to the sedimentation of the Bangui Bayparticularly during the rainy season. Such is not expected of the proposedProject.

As mentioned earlier, within the length of the coastline of the project site,sedimentation from the construction and establishment of the windmills will haveminimal impacts. The existing dominant substratum in the area is sand and rockand no significant biotic components were observed. However, it must be notedthat local subsistence fishers for octopus fishing utilize the rocky reef structuresin Sitio Bantoc, Brgy. Baruyen. This area, although within Brgy. Baruyen,Bangui, is already outside the actual project site and the project will not adverselyaffect the present octopus fishing in the area.

Although dust generation is expected to be minimal, this may affect existing coralreefs in the municipalities of Burgos and Pagudpud (not surveyed), even ifbeyond the project area. It is possible that the sediments that may be activelydeposited into the subtidal zone within the project site may easily be re-

7Ri GAIt 5OU ,-H, INO Page - 8Envimnmental Consultants



suspended and transported onto the adjacent coral reefs. This will cause

smothering and may affect the live corals in the area.

Possible effect to corals could be mitigated by putting up temporary dust barriers

(i.e. sawali walls) around construction sites. Construction could also be done

during dry season only to decrease probability of muddy run-off. The prevailing

east-northeast wind direction in the area may also mitigate dumping of airborne

particulates onto the sea.

As the marine ecosystem assessment showed, however, only the westernmost

part of Bangui Bay west of the project site has a substantial coral cover limiting

possible impacts to coral communities. A larger part of the benthic substratum of

the subtidal zone within the length of the coastline of the proposed Northwind

Project site was dominated by abiotic components such as sand and rock. As

such, no considerable adverse impacts are anticipated with the construction and

establishment of the windmills in the site.

The presence of marine turtles and the reported nestings in the area may have

implications on the Project. Marine turtle hatchlings are attracted by light. The

nesting period of these turtle species is between the months of March to May.

Increased activity at the project site during construction as well as illumination

coming from perimeter lights at the project site may disorient the hatchlings and

cause them to travel landward instead of off-shore after they emerge from their

nest. It is highly recommended that a detailed study on the matter be

undertaken. Depending on the results of the study, assistance can be requested

from concerned agencies such as the Pawikan Conservation Project of the

Protected Areas and Wildlife Bureau - Department of Environment and Natural

Resources.

Possible impacts and the mitigative measures are summarized on Table 7.

4 GAIA SOUTH. INC@ Page - 9Environmeital Consultants

Marine Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of ilocos Norte

Table 1. GPS readings of survey sites, including important features, NorthWind project site & reference sites, Bangui Bay, Ilocos Norte

Tow Date Barangay Start Finishdeg min sec deg min sec

1 21-Apr-04 Abaka N 18 32 207 18 32 154

E 120 45 250 120 45 141

2 21-Apr-04 Masiki N 18 31 995 18 31 909

E 120 44 663 120 44 531

m 3 21-Apr-04 Manayon N 18 31 844 18 31 829

E 120 44 200 120 44 57

C) 4 21-Apr-04 Banban N 18 31 769 18 31 787

E 120 43 597 120 43 4752- 5 21-Apr-04 Baruyen N 18 31 757 18 31 791

E 120 42 417 120 42 277

6 21-Apr-04 Suyo, Baruyen N 18 31 801 18 31 822

E 120 41 751 120 41 676

7 21-Apr-04 Bantoc, Baruyen N 18 31 887 18 31 900

E 120 40 993 120 40 8688 22-Apr-04 Bantoc, Baruyen N missing data

-@ E missing data9 22-Apr-04 Nagsurot, Burgos N 18 31 890 18 31 964

C, E 120 40 321 120 40 220

10 22-Apr-04 Capurpuraoan, Burgos N 18 32 076 18 32 127

E 120 39 928 120 39 816

LIT 22-Apr-04 Capurpuraoan, Burgos N 18 31 023E 120 40 046

21-Apr-04 N 18 31 762

Wind Measuring Tower E 120 43 173

C. mydas 21-Apr-04 N 18 31 824E 120 41 679

GAIA SOlUTH, INC Page - 10'Enviroiiinental Consuhants

Marine Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of Ilocos Norte

Table 2. Rapid assessment of benthic communities along proposed NorthWind Project Site & Reference Sites, Bangui Bay, llocos Norte, April 2004.

Date Tow HC SC DCA Abiotics Algae Barangay Depth (ft.) Remarks

21-Apr-04 1 0 0 0 100 0 Abaca 15-20 sand

21-Apr-04 2 0 0 0 100 0 Masiki 10-15 sand

.CD 21-Apr-04 3 0 0 0 100 0 Manayon 10-15 sand

I m 21-Apr-04 4 0 0 0 100 0 Banban 15-20 sand

rl 21-Apr-04 5 0 0 0 100 0 Baruyen 20 sand

21-Apr-04 6 1 0 5 90 5 Suyo, Baruyen 20 Sargassum, Rock

21-Apr-04 7 1 0 5 90 5 Bantoc, Baruyen 20 Sargassum; Rock

22-Apr-04 8 10 0 20 50 20 Bantoc, Baruyen 20 Sargassum; RockaD) (n 22-Apr-04 9 10 0 20 60 10 Nagsurot, Burgos 20-30 Sargassum; Rock4-c)

r> 22-Apr-04 10 25 0 10 60 5 Capurpuraoan, Burgos 10-30 Sargassum; Rock

GAIA SOUTIH, INC. Page- 11-1- Envirollmental Consultants


Table 3. Results of the specific survey for lifeforms using the Line Intercept Method in the Reference Site(Brgy. Capurpuraoan, Burgos), April 22, 2004.

Life form Total transect length Cover (%)intercepted (cm)

Coralmassive 807 16.14submassive 291 5.82branching 142 2.84encrusting 59 1.18foliose 38 0.76

subtotal 26.74Dead Corals with Algae 19 0.38Macroalgae 3012 60.24Other life forms

Soft corals 44 0.88Zoanthid 30 0.6Millepora (Fire Coral) 266 5.32

subtotal 6.8Abiotic feature

sand patch 273 5.46rock 19 0.38

subtotal 5.84

TOTAL 5000 100

G A1A SOUTH, ItIC Page - 12Eivxironinental Consultants


Table 4. List of coral genera observed in the Reference Site (Brgy. Capurpuraoan, Burgos), April 23, 2004.

Family Genera

Poccilloporidae PocilloporaSeriatopora

Acroporidae AcroporaMontipora

Poritidae PoritesGoniopora

Oculinidae GalaxeaFaviidae Favia

FavitesLeptoriaLeptastrea

Mussidae SymphylliaEuphylliaLobophylliaPavonaAsteropora

Merulinidae Hydnophora

En GAIA SOUTH, INC Page - 131U1; FDliwonmental ConsUIltantS

Marine Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of [locos Norte

Table 5. Fish species listing and area occurences from manta tow and diving surveys, NorthWind Project site & Reference sitesBangui Bay, llocos Norte, April 2004.

Family Species Common Name Importance Bangui area Burgos area1 Acanthuridae Ctenochaetus striatus Striated surgeonfish Target *2 Acanthuridae Acanthurus lineatus Lined surgeonfish Target *3 Acanthuridae Acanthurus triostegus Convict surgeonfish Target *4 Acanthuridae Acanthurus xanthopterus Yellowfin surgeonfish Target *5 Acanthuridae Naso lituratus Orangespine unicornfish Target6 Apogonidae Apogon sp. cardinalfish Major *7 Balistidae Rineacanthus rectangulus Wedge-tail triggerfish Major *8 Balistidae Balistoides viridescens Titan triggerfish Major *9 Balistidae Sufflamen chrysopterus Halfmoon triggerfish Major * *10 Belonidae Tylosurus crocodilus Crocodile longtom Target *11 Blenniidae sp. Blenny Major *12 Carangidae Caranx melampygus Bluefin trevally Target *13 Chaetodontidae Chaetodon kleini Sunburst butterflyfish Indicator *14 Chaetodontidae Chaetodon melannotus Blackback butterflyfish Indicator *15 Chaetodontidae Chaetodon vagabundus Vagabond butterflyfish Indicator *16 Cirrhitidae Cirrhitus pinnulatus Stocky hawkfish Major *17 Cirrhitidae Paracirrhites arcatus Arc-eye hawkfish Major *18 Labridae Cheilinus trilobatus Tripletail wrasse Major *19 Labridae Cotis gaimard Yellowtail coris Major *20 Labridae Diproctacanthus xanthurus Yellowtail tubelip Major *21 Labridae Gomphosus caeruleus Green birdmouth wrasse Major *22 Labridae Halichoeres hortulanus Checkerboard wrasse Major * *23 Labridae Halichoeres nebulosus Nebulous wrasse Major *24 Labridae Labroides dimidiatus Bluestreak cleaner wrasse Major * *25 Labridae Macropharyngodon meleagris Blackspotted wrasse Major *26 Labridae Stethojulis strigiventer Three-ribbon wrasse Major27 Labridae Thalassoma amblycephalum Bluntheaded wrasse Major * *28 Labridae Thalassoma hardwicke Sixbar wrasse Major * *29 Labridae Thalassoma jansenii Jansen's wrasse Major * *30 Labridae Thalassoma lunare Moon wrasse Major * *31 Labridae Thalassoma purpureum Surge wrasse Major * *32 Labridae Thalassoma quinquev/ttatum Fivestripe wrasse Major * *

GAIA COJTH, RIC. Page - 14Environiental Constltants

Marne Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of llocos Norte

Table 5, continued

Family Species Common Name Importance Bangui Area Burgos Area33 Lethrinidae Lethrinus harak Thumbprint emperor Target *34 Lutjanidae Lutjanus fulvus Blacktail snapper Target *35 Monacanthidae Amanses scopas Broom filefish Major * *36 Ophichthidae sp. Snake eels Major *37 Pomacentridae Abudefduf vaigiensis Indo-Pacific sergeant Major * *38 Pomacentridae Amphiprion clarkii Yellowtail clownfish Major *39 Pomacentridae Chromis dimidiata Chocolatedip chromis Major *40 Pomacentridae Chrysiptera leucopoma Surge damselfish Major *41 Pomacentridae Chrysiptera rex King demoiselle Major *42 Pomacentridae Chrysiptera unimaculata Onespot demoiselle Major * *43 Pomacentridae Dascyllus trimaculatus Threespot dascyllus Major *44 Pomacentridae Plectroglyphidodon dickii Blackbar devil Major *45 Pomacentridae Plectroglyphidodon lacrymatus Whitespotted devil Major *46 Pomacentridae Pomacentrus bankanensis Speckled damselfish Major *47 Pomacentridae Pomacentrus philippinus Philippine damsel Major *48 Pomacentridae Pomacentrus vaiuli Ocellate damselfish Major *49 Pomacentridae Stegastes lMidus Blunt snout gregory Major *50 Pseudochromidae Labracinus melanotaenia Darkstriped dottyback Major51 Siganidae Siganus sp. Rabbitfish Target *52 Tetraodontidae Arothron sp. Pufferfish Major *

TOTAL 26 43

GAIA SOUTH. INC. Page - 15Environmental Consultants

Manne Ecosystem Baseline Study for the NorthWind ProjectMunicipality of Bangui, Province of liocos Norte

Table 6. Fish species list based on market surveys, Bangui, llocos Norte, April 2004.

Family Species Common Name1 Acanthuridae Acanthurus lineatus 1 Lined surgeonfish2 Acanthuridae Acanthurus olivaceus Orangespot surgeonfish3 Acanthuridae Acanthurus xanthopterus 1 2 Yellowfin surgeonfish4 Acanthuridae Ctenochaetus striatus 1'2 Striated surgeonfish5 Acanthuridae Naso brevirostrs Spotted unicornfish6 Acanthuridae Naso fageni Horseface unicornfish7 Acanthuridae Naso lituratus1' 2 Orangespine unicornfish8 Acanthuridae Naso unicomis Bluespine unicornfish9 Carangidae Decapterus sp. scads10 Chanidae Chanos chanos Milkfish11 Cichlidae Tilapia Tilapia12 Clupeidae sp. Herrings13 Coryphaenidae Coryphaena hippurus Common dolphinfish14 Exocoetidae sp. Flyingfishes15 Holocentridae Myripnstis murdjan Pinecone soldierfish16 Holocentridae Sargocentron diadema Crown squirrelfish17 Holocentridae Sargocentron rubrum Redcoat18 Kyphosidae Kyphosus cinerascens Blue seachub19 Labridae Bodianus loxozonus Blackfin hogfish20 Labridae Cheilinus trilobatus' Tripletail wrasse21 Labridae Oxycheilinus digrammus Cheeklined wrasse22 Labridae Thalassoma lutescens Yellow-brown wrasse

23 Labridae Thalassoma quinquevittatum 1,2 Fivestripe wrasse24 Lethrinidae Lethrinus lentjan Pink ear emperor25 Mullidae Mulloidichthys flavolineatus Yellowstripe goatfish26 Pomacentridae Abudefduf sexfasciatus Scissortail sergeant27 Pomacentridae Abudefduf vaigiensis 2 Indo-Pacific sergeant28 Priacanthidae Priacanthus hamrur Moontail bullseye29 Scaridae Cetoscarus bicolor Bicolour parrotfish30 Scaridae Scarus forsteni Forsten's parrotfish31 Scaridae Scanus sp. Parrotfish32 Scombridae Katsuwonus pelamis Skipjack tuna33 Serranidae Epinephelus quoyanus Longfin grouper34 Siganidae Siganus fuscescens Mottled spinefoot35 Sphyraenidae Sphyraena forsteri Bigeye barracuda36 Synodontidae Synodus variegatus Variegated lizardfish

- observed in actual field surveys (Burgos reference site)1,2 _ observed in actual field surveys (Burgos and Bangui sites)

O UTr, !i Page - 16Environmental Consultants


Table 7. List of possible impacts and suggested mitigating measures for the Northwind Project, Bangui, llocos Norte.

Project Phase Possible impact on marine Mitigative/Enhancement measuresenvironmentPreconstruction 1. the east-northeast wind direction will carry particulate

levelling of construction sites matters away from the sea

2. putting-up of dust barriers on construction sitesConstruction Generation of dust that may smother 1. The east-northeast wind direction will carry particulate

vehicular traffic along existing corals and algae matters away from the seadirt access road

suspension of fine sand particles 2. Construction activities during the dry seasonduring increased activity in the aree

increased activity during 1. Green turtle nesting period is from March-Mayconstruction may disorient turtle Effect on the nesting of turtleshatchlings 2. Limit construction activities from March-May

Operation 1. A detailed study on the presence of turtle nesting sites

should be done

2. Use of perimeter lights at the project site duringUse of perimeter lights at the site may nesting period should be limiteddisorient turtle hatchlings; increasedpublic access to beach area

3. Public access to beach area where turtles are sightedshould be controlled especially during nighttime.

e A;4Ui SQUIl IMtlC Page - 17Environmental Consultants


Municipality of Bangui, Province of Ilocos Norte

V. REFERENCES

English, S., C. Wilkinson and V. Baker. 1994. Survey Manual for Tropical MarineResources. ASEAN-Australian Marine Science Project: Living Coastal

Resources, Australian Institute of Marine Science, PMB No. 3, Townsville MailCentre, Australia 4810, 368 p.

Gomez, E.D., Alcala, A.C. and San Diego, A.C. 1981. Status of Philippine coral

reefs. Proceedings of the Fourth Intemational Coral Reef Symposium Volume I.

Manila, Philippines.

Pawikan Conservation Project. 1993. Marine Turtles in the Philippines. A prmer

produced by the PCP - PAWB - DENR. lOpp. Pawikan Conservation Project,

Protected Areas and Wildlife Bureau, NAPWNC, Quezon Avenue, Q.C., 1100.

Veron, JEN. Corals of Australia and the Indo-Pacific. University of Hawaii Press,

Hawaii.

4f GAlg SOUTH. INC. Page - 18Environmental Consultants

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Surgeon fishes and sweetlips on sale in Bangui Market caught fromPagudpod reefs, Ilocos Norte.

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Documents

1 Marine Ecosystem v aseline Study...Figure 1 Vicinity Map Figure 2 Sampling Site Map.AIA SOU T!JH IN-Environmental Conisultants. EXECUTIVE SUMMARY ... This turtle species is one of