english andal amdal 2010 part 1
TRANSCRIPT
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been provided with EIA in year 2001. The EIA was approved by the Central
Communication EIA Commission with an approval Nr. KP.137 A Year 2001on 04 May 2001. Unfortunately, to date the required area for the proposed
development is still inadequate. With reference to State Regulation Nr. 27
Year 1999 about Environmental Impact Assessment (EIA), the approval on
the EIA of Tanjung Perak Port Development is out of date since the
development was not yet realized within 3 (three) years time as of the date ofthe approval. Therefore, in order to execute Tanjung Perak Port Development
plan in Lamong Bay, it requires re-application for EIA approval from the
competent authorities.
The EIA covers studies in to what extent the impacts, both positive and
negative ones, that may arise from a business line and/or activities to the
environment The positive impacts are to be maximized, while the negative
ones are to be minimized I order to prevent decreased environment quality.
The application of this EIA is supposed to support sustainable eco-friendly
development.
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1.3. Jurisprudences
The EIA is prepared based on the prevailing jurisprudences and in consistent
with the plans of Tanjung Perak Port Development in Lamong Bay. The
jurisprudences related with the EIA are, inter alia :
Acts Considerations
Act Nr. 5 Year 1960 about AgrarianPrinciples
Related with hypothetical significantimpact priority about apatialutilization
Indonesian Act Nr. 5 Year 1990 aboutBiological Natural Resources and TheirEcosystems
Adopted as reference that the activityplans are to be consistent with waterresource conservation efforts
Act Nr. 23 Year 1992 about Health Adopted as reference toEnvironmental Impact Assessment in
View of Health Aspect Indonesian Act Nr. 32 Year 2004 about
Local Government
Referring to the authorities ofprovincial/city/regency governmentin relation with activity plans
Indonesian Act Nr. 26 Year 2007 aboutSpatial Arrangement.
Adopted as reference in determiningactivity site
Act Nr. 27 Year 2007 about Coastal Area andSmall Island Management
Adopted as reference in managingand observing coastal areas and
ll i l d
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State Regulations Considerations
State Regulation Nr. 85 Year 1999 about :
Amendment to State Regulation Nr. 18 Year1999 about Pollution and/or Sea DestructionControl
Adopted as reference in managing
hazardous and poisonous waste
State Regulation Nr. 81 Year 2000 aboutNavigation Affairs
Adopted as reference in operationalactivities
State Regulation Nr. 69 Year 2001 about Port Adopted as reference in operationalutilization of hazardous andpoisonous materials
State Regulation Nr. 74 Year 2001 aboutHahardous and Poisonous Materials
Adopted as reference in operationalactivities
State Regulation Nr. 82 Year 2001 AboutWater Quality Management and Water
Pollution Control
Adopted as reference in waterenvironment management and
observation
State Regulation Nr. 51 Year 2002 aboutShipping
Adopted as reference in operationactivities
State Regulation Nr. 16 Year 2004 about
Area Utilization
Adopted as reference in determining
proper area utilization anddevelopment
State Regulation Nr. 38 Year 2007 aboutDivisions of Authorities among NationalGovernment, Provincial Gvernment andCity/Regency Government
Determining authorities inenvironmental management andobservation
State Regulation Nr. 60 Year 2007 about FishResource Conservation as Guides to FishResource Preservation
Adopted as reference that activityplanning is to be consistent with fishresource conservation efforts
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Regulations of State Minister of Environment Considerations
Regulation of State Minister of Environment
Nr. 11 Year 2006 about Business Plansand/or Activities to be Provided withEnvironmental Impact Assessmenmt.
Adopted as reference in preparing
Environmental Impact Assessment
Regulation of State Minister of EnvironmentNr. 05 Year 2009 about Waste Managementin Port
Adopted as reference in hazardousand poisonous waste handling
Regulations of Minister of Communication Considerations
Regulation of Minister of Communication Nr.KM 4 Year 2005 about Prevention of WatePollution from Vessels
Adopted as reference for pollutionprevention and environmentalobservation
Regulation of Minister of Communication Nr.7 Year 2005 about Shipping Navigation Aids
Adopted as reference in determiningseawater transportation transportation
Regulation of Minister of Communication NrKm 14 Year 2006 about Surface TrafficEngineering and Management
Adopted as reference in improvingtransportation network performance
Decisions of Minister of Communication Considerations
Decision of Minister of Communication Nr.KM 215 Year 1987 about Waste StorageProvision and Vessel
Adopted as reference for pollutionprevention and environmentalobservation
Decision of Minister of Communication Nr.KM 286 Year 2002 about Mandatory Pilotingin Water Areas
Adopted as reference in determiningseawater transportation transportation
D i i f Mi i t f C i ti N Ad t d f i i
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Decision of Minister of Environemnt and Head
of Environmental Impact Management Agency
Considerations
Decision of Minister of Environemnt andHead of Environmental Impact ManagementAgency Keputusan Nr. Kep. 056Year 1994 about Guides to Significant ImpactMeasurement.
Adopted as basis for determiningsignificant impacts
Decision of Minister of Environemnt andHead of Environmental Impact ManagementAgency Keputusan Nr. KEP.
299/11/Tahun1996 about Technical Guides toSocial Social Aspects in PreparingEnvironmental Impact Assessment
Adopted as guides in preparingenvironmental impact assessment interm of social aspects
Decision of Minister of Environemnt andHead of Environmental Impact Management
Agency Keputusan Nr. Kep.124/12/1997about Guides to Review on Community
Health Aspect in Preparing EnvironmentalImpact Assessment.
Adopted as guides in reviewinghealth aspects in environmental
impact assessment
Decision of Minister of Environemnt andHead of Environmental Impact ManagementAgency Keputusan Nr. 08 Year 2000 aboutCommunity Involvement and InformationOpeness in Environmental ImpactAssessment Proces.
Adopted as referrence in communityinvolvement process in preparingenvironmental impact assessment
East Java Provincial Regulations Considerations
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Decisions of Governor of East Java Province Considerations
Decision of Governor of East Java Province
Nr. 660.3/25781/025/1986 aboutEnvironmental Impact Handling.
Adopted as reference in handling
pollution impact
Decision of Governor of East Java ProvinceNr. 154/1994 about Business Line and/orActivities to be Provided with EnvironmentalImpact Assessment
Regulation as basis for preparingenvironmental impact assessment
Decision of Governor of East Java ProvinceNr. 08 Year 2004 about Operational Guides
to Community Involvement in InformationOpenness in Environmental Impact
Assessment Process in East Java Province
Adopted as reference in communityinvolvement in information
openness in environmental impactassessment process in East Java
Province
Decision of Governor of East Java ProvinceNr. 61 Year 2006 about Space Utilization inRegional Scale Dense Area in East JavaProvince.
Adopted as reference in spatialdevelopment
Regulation of Governor of East Java ProvinceNr. 10 Year 2009 about Air Ambient Quality
Standard and Immovable Pollution Sources inEast Java Province.
Adopted as reference in evaluatingimpact on ambient air quality.
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G2
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Person in Charge : Rahmat Yuli Artono
Address : PT. Konindo Timur Utama
Jl. Perum YKP Rungkut Lor II B-1 Surabaya (60293)
Table 2.1. Environmental Impact Statement Writing Team
Tanjung Perak Port Development in Lamong Bay
Nr
WRITING
TEAM NAME QUALIFICATION
1
2
3
4
5
6
7
Leader
Team member
Team member
Team member
Team member
Team member
T b
Ir. Anggrahini, M.Sc
Prof.Ir.Pinardi Koestalam, M.Sc
Ir. Waras Wibowo
Ir. Triyogi Suramto
Ir. Hanafi Pratomo
Ika Ristiyani Madyaningrum, S.Si
D H
Certificate of EIA B
Transportation Expert
Hydrooceanography and
Sedimentation Expert
Hydrology Expert
Water Physical-Chemical
Quality Expert
Aquatic Biology Expert
S i E i d C l
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2.2. Descriptions of Business Plans and/or Activities
General
The on-going processs and current preparation of detailed engineering design
(DED) for Tanjung Perak Port Development in Lamong Bay, the construction
plans are getting apparent. The revised activity plans will be decsribed in the
following sub-chapter that will be adopted for predicting impacts detailed in
the following chapter.
Descriptions of Activity Plans
The Tanjung Perak Port Development in Lamong Bay is exclusively for
construction container terminal and comprises constructions of causeway,
connecting bridge, container yard abd container freight station (CFS), office
building, gare truck parking lot, pedestrian, open green space, and pier and
trestle.
It does not require land acquisition and community resettlement especially for
the construction of access roads in Tambak Osowilangun Village. The whole
area required for this construction belongs to PT. Pelabuhan Indonesia III, and
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Tabel 2.1.Construction Activities in Tanjung Perak Port in Lamong Bay
Nr Descriptions Unit Volume1 Causeway and connecting bridge works
a Causeway reclamation
Length m' 500
Width m' 140
Area m2 70,000
Reclamation Volume m3 173,000
b Connecting BridgeLength m' 2,560
Width m' 18
Area m2 32,000
2 Shallow water reclamation works for container yard and
supporting facilities
Reclamation Volume m3 5,844,000
Container yard size, Area, 4 Blocks @ 96.750 m2 m2 387,000
Terminal supporting facilities m2 113,000
3 Pier and trestle works
a Piers, sized 645m x 40m and 635m x 40m m2 51,200
b Trestle, 2 units sized 235m x 12m and 1 unit sized 235m x
9,5m m2 7,872.5
Source: Survey Investigation Design (SID), Construction of Container Terminal II in Lamong
k S b 2008
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 2-5Environmental Impact AssessmentTanjung Perak Port Development in Lamong Ba y
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ina
lDeve
lopmen
tin
Lamong
Bay
Off
Shore
Side
minalDevelopmentIIinL
amongBay,TanjungPerakPort,Surabaya,2008)
U
H
1'08.1
"LS
1'10.4
"BT
G
-14
.00
G1
CURRENTM
ETER
I
H1
I1
71
1'41.1
"LS
1124
1'38.3
"BT
711'48.9
"LS
11241'32.5
"BT
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GARIS
PANT
AI
B1
712'39.0
"LS
11239'47.7
"
BT
Causeway500 m x 140 m
Connecting Bridge
2560 m x 18m
U
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Table 2.2. Project Activity Plan - Tanjung Perak Port Development in
Lamong Bay
Nr Descriptions 2007 2008 2009 2010 2011 2012 2013Project Preparation
1 Preparation of Survey, Investigation and
Design (SID) and Environmental Impact
Assessment
2 Project arragement and Licenses
perijinan
Construction
1 Cuaseway and Connecting Bridge
Construction Works
2 Shallow Water Reclamation and
Container Yard Construction
3 Pier Structure and Trestle Construction
4 CFS, office Building, Gate Construction
and Workshop etcs
Source: Survey Investigation Design (SID) Container Terminal Development II in Lamong Bay,
Tanjung Perak Port, Surabaya, 2008
Project Implementation : Studied Pre-Construction Phase, Construction
Phase and Operation Phase
In the project implementation, generally there are activities predicted to brig
impacts during the planning, construction and operation of the project. The
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by the activities. The socialization covers the whole project activity
plans for the container terminal development in Lamong Bay.
The socialization activities are arranged as follows :
1. Approaching the fisherman public figures or fisherman
societies;
2. Collecting the public complaints and expectations in relation
with the project activities and communicate them to the
management and relevant government authorities;
3. Holding regular meetings with the community, PT. Pelabuhan
Indonesia III and relevant local government
4. Socializing the project activities plans to the community and
fishermen concerning the activities possibly affecting their
activities (such as : reclamation, pier strcture construction, etc.)
The issues to be discussed in the socialization cover the following
topics :
1. Activity plans on area preparation, reclamation for constructing
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and 20 non-skilled workers. The hiring will be prioritized for the
local people in accordance with the required qualifications. They
will be hired during construction phse only on contract basis.
Material and Equipment Mobilization and Demobilization
Material and equipment mobilization and demobilization for
preparing the construction of connecting bridge, pier structure and
trestle are highly potential to bring negative impacts to the traffic
on the roads accessed by the material and equipment transporting
trucks. The addition of heavy trucks operated for material and
equipment mobilization in the container terminal development in
Lamong Bay will be about 10 15 units of trucks per day. For
transporting the material and equipment to the project site, the
operated trucks will access the Toll Road and Jalan Tambak
Osowilangon until reaching the project site.
The works will adopt cast in situ construction method. The
reinforcing metal bards will be directly brought and set on site,
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Reclamation for Preparing Causeway Construction
The reclaimed area for constructing the causeway will be 500 m length
and 140 m width (total 70,000 m2) protruding to the sea. The
construction of the causeway will be quarry with volume + 173,000m3.
The cut of cross section of the causeway is presented in Figure2.4.
PVDPVD PVD PVD PVD PVD PVD
7.0 m HWL = +3,00 mLWS
+7,00 mLWS
0.00 mLWS
1:2
-25,00 mLWS- 25.00 mLWS
TIMBUNAN & SURCHARGE
(selected material)
0.00 mLWS
+2.00 mLWS
PHD
25m
Fill and surchage
(selected material)
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Connecting Bridge Construction Works
The connecting bridge will be 2,560 m length and 12,5 m width. The
construction adopts steel pile foundation. The distance between poers of
the bridge piles. The interval in between the piles is 40 m. It is designed
to anticipate scouring due to seawater turbulence.
The typical of cut of cross section of the connecting bridge is presented
in Figure 2.5 and Figure 2.6. The connecting bridge is constructed for
the interests of the fisherman with + 5m clearance.
18000
8000 8000
2100
1200
3600 3
00
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Figure 2.6. Cut of Pile Slab Cross SectionSource: Survey Investigation Design (SID) Container Terminal Development II in
Lamong Bay, Tanjung Perak Port, Surabaya, 2008
Shallow Water Reclamation for Container Yard Construction
The shallow water reclamation requires holistic planning as it is closely
related with detailed designs of each part of the structure. In general it
covers riprap construction and shallow water reclamation. The quarry
material is the mud collected from the dredging of shipping routes.
In general, the methods of shallow water reclamation are described as
follows :
18000
4 @ 3500 = 14000 20002000
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Surabaya Container Terminal). The reclamation material is supplied
from the quarry by means of barge provided with suction unit and
pipes to flow the material to the location of the causeway as it is in
shallow water area.
Area Preparation and Compaction
It is a process of compaction of the reclamation in to an area ready
for constructions.
The works comprise :
a) Preparation Works
It covers the gains of licences required for the area to be
reclaimed, equipment mobilization, installation of signs and
border poles of the reclaimed shallow waters.
b) Geotextile Installation (made of synthetic materials for soil
strengthening). In order that the reclamation construction is
stable, it requires geotextile installation in layers. The thickness
of each layer is to conform with the needs.
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e) Shallow Water Reclamation Works
The reclamation is processed by pouring the quarry materials
into the reclaimed area steadily until it reches the expected
elevation. Next, the reclamation is leveled and compacted.
f) Vertical Drain and Horizontal Drain Installations
The vertical drain is for accelerating the draining. It is settled
on the ground by means of piling equipment provided with
special tools.In order to be able to accelerate the drain of water
of of the reclamation area, it requires horizontal dran (sand).
g) Compaction Works
The compaction requires vibrator rollers. The number of
required lanes depends on the permitted compaction
requirements.
Construction of Pier Structure and Trestle
The area of pier to be constructed is 51,200 m2 (645 m x 40 m and
635 m x 40 m) and the size of each of the 2 trestles to be constructed is
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Figure 2.7. Cut of Pier Cross Section
Source: Survey Investigation Design (SID) Container Terminal Development II in
Lamong Bay, Tanjung Perak Port, Surabaya, 2008
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Pier Structure and Trestle Construction
The piers are constructed on pile foundation. The piles are plantedby means of pontoon on the sea (Figure 2.9.). Next, it is followed
with preparation of poer reinforcement and casting (on the top of
the structure to tie some piles), and preparation of girder
reinforcement and pier floor. Then, they are casted with ready mix
concrete. The casting in situ is predicted to decrease the seawaterquality due to concrete spills.
Tiang Pancang
Darat Laut
Ponton Pancang
On ShoreOff Shore
Pile
Pontoon
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Figure 2.10. Hardening LayersContainer Yard Zona
Source: Survey Investigation Design (SID) Container Terminal Development II in
Lamong Bay, Tanjung Perak Port, Surabaya, 2008
12 Gates
The gates are constucted with steel frames. The front view of the
gate structure is presented in Figure 2.11.
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The typical side view and cross section of the CFS is presented in
Figure 2.12 and Figure 2.13
Figure 2.12. CFS Left Side View
Source: Survey Investigation Design (SID) Container Terminal Development II in
Lamong Bay, Tanjung Perak Port, Surabaya, 2008
Tampak Samping KiriSkala 1:250
667667 667667 667667
4000
000
+ 700
+ 1266
- 120
SISI ARAH LAUT SISI ARAH DARATAPRON APRON
300 300300300
+ 517
600600
15
+ 700
+ 1266
15
On Shore SideApron
Left Side View
Scale 1250
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Figure 2.14. Typical Hardened Construction of Park ing Area
Source:Survey Investigation Design (SID) Container Terminal Development II
in Lamong Bay, Tanjung Perak Port, Surabaya, 2008
The construction of terminal facilities is predicted to mobilize heavy
duty equipment and materials by mens of 10-15 units of trucks per day.
The trucks operated have to pass emission tests.
C. Operation Phase
Concrete Block K-500
Bedding Sand
BASE
COURSE
CTB K-125
SUB GRADE
CBR 6 %
10cm
5cm
60cm
SUB BASE
AGREGAT B
CBR 30 %
30cm
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Container Loading and Unloading
The operation of container terminal in Lamong Bay will entailcontainer loading and unloading activities.
In the loading and unloading activities, commonly the containers
are to first transit in the container yard before being transported to
vessels for loading operations or to trucks for unloading operations.
The container terminal capacity is 1,6 million TEUs per year, and
it is estimated that there will be increase of vessel accesses by +
530 vessels per year or + 2 vessels per day. Tanjung Perak Port
Development is supposed to anticipate container loading and
unloading up to year 2030. Next, it will be developed by
constructing a new port in Tanjung Bulu Pandan, Bangkalan,
Madura (Results of Study by JICA 2007, The Greater Surabaya
Metropolitan Port).
Container Terminal Operation
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Ballast Water Supply and Oil Spill
The ballast water is commonly filled after the vessels havecompleted unloading operations to balance the vessels. Such
operations seldom take place in Tanjung Perak Port since, mostly,
vessels having completed unloading operations, they will be
straigtly loaded. Therefore, in general ballast water filling
practically is not required. The oil usually spills during ballast
water draining. The process ballast water draining is to adopt
reception facility (RF). The container terminal in Lamong Bay
share the same RF available in Tanjung Perak Port in Nilam Barat.
Waste Treatment in Tanjung Perak Development in Lamong Bay
The waste treatment in container terminal in Lamong Bay utilizes
the same waste treatment plant already available in Tanjung Perak
Port. The treated wastes cover :
Solid Waste
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Regulation of the Minister of Environment Number 05 Year 2009
about Waste Treatment in Ports (annexed thereto). The RF
activities cover collection and storage of dangerous and hazardous
wastes, and waste treament facilities, such as oil separator, Waste
Water Treatment Plant (WWTP) and residual landfill (such as :
incenerator). The RF operation is not yet optimum as it has not yet
been legally protected by Sea and Coast Security Guard (KPLP) by
means of a regulation obliging each vessel to utilize the RF,
especially for handling used oil or dangerous and hazardous
wastes). The RF Operation Permit is presented in Annex 3.
Port Security Management
The port security in the container terminal in Lamong Bay will be
managed under the same standards as the ones applied in Tanjung
Perak Port. Tanjung Perak Port management has applied the
international standards to manage the port security and facilities
under International Ship and Port Facility Security (ISPS Code)
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2.3. Alternatives Studied in Environmental Impact Statement
In this Environmental Impact Assessment, there is no alternatives of location
as the determination of location for the port development is based on the
results of previous studies, inter alia : Technical and Environmental Review
on Shipping Routes, Seminetation and Phase of Reclamation in Coastal
Area in Madura Strait Year 2000,by Public Service Center (LPM) of ITS in
collaboration with Marine Engineering Study Program of ITB, concluding that
Lamong Bay is one of the feasible alternatives for port development in Madura
Strait, in addition to port development in the estuary of South Mireng River,
Gresik. The results of the review concluded that in view of technical aspects
the area is simply fair, yet in view of environmental aspects it is feasible
todevelop.The degree of importance, initial environmental condition and environmental
evaluation during the study are arranged as follows :
Degree of Importance:
- Referring to Surabaya City Master Plan, the area is suitable for
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2.4. Relationship Between Business and/or Activity Plans and Other Activities
Surrounding the Project Site
Tanjung Perak Port
Tanjung Perak Port is geographically located in 112 43 22 East Longitude
and 7 11 54 South Latitude, excatly in Madura Strait., North Part of
Surabaya City. As the second largest port in Indonesia, after Tanjung Priok
Port in Jakarta , it plays definitely strategic roles and function, i.e. : as a
support to smoothen the sea transportation trafficand driver of economic
growth, specifically in East Java Province, and generally in East Indonesia. In
addition, it also serves as a center for both international and domestic trading
activities and a transhipment port. The roles and function are obviously
dominant and mutually supporting.
Geographically, the position of East Java Province is relatively central to the
territory of Republic of Indonesia, where the second largest port in Indonesia
is located in. The port accommodate both import-export and inter-insular
trading activities. In view of economy, East Java Province plays important
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The transportation system connecting Tanjung Perak Port tp the hinterland
comprises some modes of transportation. It East Java Province and its
surrounding, it is dominated by trucks with arterial roads and toll road. The
existing toll road is Surabaya-Gempol Toll Road (43 km) and Surabaya-Gresik
Toll Road (21 km). Besides, there are railroads accessing the port, i.e.:
Sidotopo railroad passing Perak train station.
655'00"LS
655'00"LS
11250'00" BT11235'00" BT
SLEMPIT
SEMBILANGAN
Ug. SLEMPIT
SEMBILANGAN
JUNGPIRINGBARAT
JUNGPIRINGTIMUR
Ug. PIRING
MARTAJASA
BANGKALAN
S.PUCUNG
BANCARAN
SABANEH
SABIYAN
GEBANG
POCOGAN
BARUK
LANCANG
BINTENG
AROSBAYABARAT
Tg.MODUNG
Tg.BULUPANDAN
Tg.SAWO
KALIMERTANI
KALIUJ
UNG
Tg.WEDORO
KALISOLO
MUARAKALI SOLO
KALI RESPATI
11240'00" BT 11245'00" BT
700'00"LS
700'00"LS
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The progress of traffic accessing Tanjung Perak Port during the last five years
(2003 through 2007) are as follows :
a. Vessel Visit. In average, the annual growth rate decreased in units by 0.08%
and in Gross Tonnage (GT) by 2.51%.
b. Cargo Traffic. In average, the annual growth rate decreased in cargo traffic
in Ton/m3 by 2.24%, however in term of unit it increased by 15.23%.
c. Container Traffic. In average, the annual growth rate increased in box unit
by 7.32% and TEUs by 6.84%.
d. Passenger Traffic.In average, the growth rate of passenger traffic decreased
by 0.85% per tahun.
Table 2.3. Vessel Visit, Cargo Traffic, and Passenger Traffic
Year 2003-2007Growth
NR. DESCRIPTION UNIT 2003 2004 2005 2006 2007 Average
( % )
1. Vessel Visit Unit 15,624 16,547 14,915 15,467 15,459 -0.08
GT 65,183,411 65,058,717 60,590,286 60,005,935 58,785,543 -2.51
2, Cargo Traffic Ton/ m3 12,122,736 11,436,695 10,650,986 10,940,693 11,034,644 -2.24
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impact will be increase of traditional fisherman boat traffic loading the
existing shipping routes in the West Part of Madura Strait.
Waterfront City Plan in Lamong Bay
Based on the information collected from the East Java Province
Environmental Agency, it is planned to establish a Waterfront City close to
Lamong Bay by a private entity. It is supposed to be a water tourist attractioncenter. Theproject will be realized by reclaiming parts of Lamong Bay to
establish 2 (two) artificial islands, each with a total area of 116 Ha and 84 Ha
(See Sitemap in Figure 2.16).
The locations of the reclamation area are in two administrative territory of
Regency Government og Gresik (116 Ha) and City Government of Surabaya
(84 Ha). The project will possibly increase the surface elevation of backwater
in the estuary of Lamong River due to high tide.
Suramadu Bridge
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 2-29Environmental Impact Assessment Tanjung Perak Port Development in Lamong Ba y
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3.1. General
This sub-chapter contains brief descriptions about the environment in the
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a. Rainfall
The heaviest monthly rainfall during the last 10 years was 605 mm in
January 1999. The heavy rains usually fall in November through January.
Figure 3.1. Monthly Rainfall During 1998-2007
Source : Tanjung Perak Meteorology Station I Surabaya
The graph shows that the heavy rains fall during the wet season from
November through April. The dry season takes place from May through
0
100
200
300
400
500
600
700
CurahHuj
an(mm)
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007January
February
March
April
May
June
July
August
S
eptembe r
October
N
ovember
Rainfall(mm)
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Figure 3.2. Monthly Average Temperature during 1998-2007
Source : Tanjung Perak Meteorology Station I Surabaya
The monthly average highest temperature was in November 2006, i.e.
30.6oC, while the monthly average lowest one was in January 2001,
i.e.: 26.9oC.
c. Wind Speed and Direction
25
26
27
28
29
30
31
Suhu(oC)
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007January
February
March
April
May
June
July
August
September
October
November
December
Tem
erature
C
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Table 3.1. Cont.
2002 2003 2004
MOST WIND MAX. WIND MOST WIND MAX. WIND MOST WIND MAX. WIND
DIR SPD DIR SPD DIR SPD DIR SPD DIR SPD DIR SPD
W 4 W 18 W 4 NW 25 W 5 W 21
W 6 W 30 W 6 NW 37 W 6 NW 20
E 4 NE 20 E 4 NW 30 W 5 W 40
E 5 NE 16 E 4 E 22 E 6 E 16
E 5 NE 18 E 4 SE 22 E 4 W 20
E 6 NE 20 E 5 E 24 E 5 U 20
E 6 NE 19 E 5 E 18 E 5 E 23
E 6 NE 20 E 6 E 20 E 6 E 22
E 6 NE 20 E 7 E 20 E 6 E 22
E 6 NE 20 E 5 E 16 E 6 NE 20
E 5 NE 24 E 4 E 20 E 5 S 20
W 4 U 38 W 7 NW 26 W 5 U 40
Table 3.1. Cont.
2005 2006 2007
MOST WIND MAX WIND MOST WIND MAX WIND MOST WIND MAX WIND
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With reference to the aforementioned data, it shows that the wind direction is
dominantly W-E, with averge maximum speed of 20 knot and average speed 5
knot.
3.2.2. Air Quality and Noise
Air Quality
To identify the ambient air quality in the project site, the contents of gases,
such as Carbon Monoxide (CO), Nitrogen Oxide (Nox), Sulphur Dioxide
(SO2), and solid particles (dust) are measured. The gases are measured interms
of : air temperature, relative humidity. Wind speed, and wind direction. The
primary measurements are undertaken and analyzed by East Java Province
Company Hygiene and Occupational Health Center. The air quality and noise
measurements were conducted on 19 February 2008 in 5 (five) observation
points surrounding the studied area as presented in Figure 3.3. The climatic
conditions during the measurements are presented in Table. 3.2. and the
results of ambient airquality measurement are presented in Table 3.3.
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Table 3.3. Results of Ambient Air Quality Measurement
*Regulation of Governor of East Java Province Nr. 10 Year 2009
** Indonesian State RegulationNr. 41 Year 1999 about Air Polution Control
Source: Air Quality and Noise Survey on 19 February 2008 for Environmental Impact Assessment for Tanjung Perak Port
Development towards Lamong River and Lamong Bay
Nr Locations
PARAMETER
Carbom
Monoxide
(CO) (ppm)
Nitrogen
Oxide
(NOx) (ppm)
Sulphur
Dioksida
(SO2) (ppm)
Amonia
(NH3)
(ppm)
Dust(g /N m3)
1 Container Terminal Gate 1.0 0.0453 0.0016 0.0439 0.0658
2 Demak Junction, Jl. Gresik 4.0 0.0593 0.0044 0.0423 0.6482
3 Romokalisari Crossroad 4.0 0.0561 0.0044 0.0044 0.5791
4 Tambak Osowilangun 3.7 0.0441 0.0026 0.0584 0.0662
5 Margomulyo Junction 2.7 0.0420 0.0022 0.0658 0.6857
Quality Standards * 20 0.05 0.10 2.00 0.26230 g/Nm
**
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 3-7Environmental Impact Assessment Tanjung Perak Port Development in Lamong Ba y
Source:
DIGITAL INDONESIAN MAP YEAR 1999I I
1 SKALAU
TA R
A
1430
1400
9200
1330
1300
1230
1200
11
30
1100
9205
1030
1000
0930
0900
0830
9210
0800
0693267
443
919824291 293
383
06
Balongsa
393
06
Balongsa
413
420
0690
0693214
Remarks Air and Noise Sampling in 5 Points
Figure 3.3Air Quality and Noise Survey Locations
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Refering to data presented in Table3.3, the parameter exceeding the quality
standard is NOx, i.e.: in Jl Demak Jl. Gresik Junction and Romokalisari
Crossroad. The dust exceeding the quality standards as set forth in the
Indonesian State Regulation 41 Year 1999 is found in Demak Junction,
Romokalisasi Crossroad and Margomulyo Junction. The concentration of
measured gases and dust is predicted to originate from fuel combustion of
automotive vehicles and traffic of automotive transportation activities. In the
locations of measurement, the mobile activities of human beings and goods by
means of automotive vehicles are relatively dense.
Noise
The noise sampling points and number of samples are the same as the ones for
measuring air quality measurement (See results in Table3.4.).
Table 3.4. Results of Noise Measurement
Nr LocationNoise Intensity
(dB.A)
1 Container Terminal Gate 71 2
Remarks Location of Sediment Sampling Dasar
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 3-9Environmental Impact Assessment Tanjung Perak Port Development in Lamong Ba y
U
TA R
A
Source :
DIGITAL INDONESIAN MAP YEAR 1999I I I
1 0 1SKALA
1430
1400
9200
1330
1300
1230
1200
1130
1100
9205
1030
1000
0930
0900
0830
9210
0800
0693267
443
919824291 293
383
06
Balongsa
390
393
400
06
Balongsa
413
420
0690
0693214
Remarks
Location of Seawater Quality Sampling
1
Figure 3.4Locations of Sediments Floating and on Bed and Sewater
Quality Sampling
1
2
3 4 105
6
9
8
7
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Table 3.5. Seawater Quality in Studied Area
Table 3.5. Cont.
PARAMETER UNITDetection
Limit
RESULT
LOCATION - 1
RESULT
LOCATION - 2
RESULT
LOCATION - 3
RESULT
LOCATION - 4
RESULT
LOCATION - 5
Physical :
Clarity **) m 0.1 NA NA NA NA NA
Odour - - Odorless Odorless Odorless Odorless Odorless
Total Suspended Solid mg/l 1 83.0 17.0 20.0 14.0 13.0
Rubbish **) - - ) Nihil ) Nihil ) Nihil ) Nihil ) Nihil
Temperatur **) C 0.1 ) 27.3 ) 27.4 ) 27.3 ) 27.3 ) 27.3
Oil Layer **) - - ) Nihil ) Nihil ) Nihil ) Nihil ) Nihil
Chemical :
pH **) - 0.01 ) 7.75 ) 7.69 ) 7.86 ) 8.23 ) 8.23
Salinity as NaCl 0.1 29.4 28.5 26.4 27.4 27.8
Total Ammoniac (NH3-N) mg/l 0.01 nd nd nd nd nd
Sulfide (H2S) mg/l 0.01 nd nd nd nd nd
Total Hidrocarbon mg/l - NA NA NA NA NATotal Phenolic Compound mg/l 0.001 nd nd nd nd nd
Total PCB (Polychlor Bifenyl) mg/l 0.001 nd nd nd nd nd
Surfactans Anionic as MBAS mg/l 0.03 nd nd nd nd nd
Oil and Grease mg/l 0.2 nd nd nd nd nd
TBT (TributylTin) mg Sn/L - NA NA NA NA NA
Dissolved Metals :
Mercury (Hg) mg/l 0.001 nd nd nd nd nd
Cadmium (Cd) mg/l 0.004 nd nd nd nd nd
Copper (Cu) mg/l 0.004 nd nd nd nd nd
Lead (Pb) mg/l 0.007 nd nd nd nd nd
Zinc (Zn) mg/l 0.01 nd nd nd nd nd
Biology :Total Coliform MPN/100 ml 2 9 240 900 240 nd
PARAMETERRESULT
LOCATION - 6
RESULT
LOCATION - 7
RESULT
LOCATION - 8
RESULT
LOCATION - 9
RESULT
LOCATION - 10
QUALITY
STANDARD *)Test Method
Physical :
Clarity **) NA NA NA NA NA > 3 Visual
Odour Odorless Odorless Odorless Odorless Odorless Odorless 2105-B #)
Total Suspended Solid 25 0 11 0 10 0 17 0 24 0 80 2540-D
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Based on the data presented in Table 3.5., it is found that, when compared to
the standards set forth in Decisison of Minister of Environment Nr. 51/2004,
the seawater quality is described as follows :
The seawater physical quality based on the result of measurement on
parameter of suspended solid, there is 1 location the quality of whicj
exceeds the standard quality, i.e. : waters in Lamong River (Location Nr.
1).
The seawater chemical quality measured in 10 measurement locations I
sin general satisfy the seawater quality standards in port area. Seaa
locations in Figure3.4.
Referring to the aforementioned descriptions, it is conclusive that the
seawater in the studied area and its surrounding satisfy the quality standards
for port area.
The quite number of suspended solid in the studied area , especially the one
in Location 1 or in front of the estuary of Lamong River is due to the
sediment in Lamong River. It contains mud drawn by the river water and
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78
0 0 1 15121021 22 25
1715 20 26 27 32
26 26
ySoftClailySilt
ftClailySilt
HardClailySilt
ediumClailySilt
StiffClailySilt
-2.00
BARATLAUT
BH3
-0.00
520m
SPT
T gRoutes,SedimentationandReclamationinCoastalAreainMad
uraStrait,
SOUTHWEST
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3.3. Hydrology and Hydro-oceanography Components
3.3.1. Hydrology Aspects
Watershed
In the studied area there are rivers draining into Lamong Bay. They are
Lamong River, Krembangan River, Anak River, Greges River, Branjangan
River and Sememi River. They mainly serve as area drainages. The river
waterflows originate from the surrounding areas and household liquid wastes.
These rivers drain into Gunungsari Drainage System as they are connected to
Gunungsari Primary Drainage. Gunungsari Primary Drainage used to be
irrigation network that changed into drainage due to the change of drainage
areas in the farms into dwelling and industrial areas.
The characteristics of the small rivers resemble the ones of Lamong River.
Accordingly, the results of analysis on Lamong River apply to those small
rivers.
The initial descriptions of the rivers and watersheds are as follows :
L Ri
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In the downstream, it is less wide, i.e. : 60 m, with flood plain depth
2,50 m.
The main problems are Lamong River are flood and sedimentation, as it
is the final drainage to some parts of Gresik Regency, Lamongan
Regency and the areas surrounding the river. Floods in Lamong River
watershed always present in wet season every year. Based on the
Detailed Designs and Environmental Impact Assessment concerning
Lamong River in Gresik Regency, 2005, the largest floods or the highest
puddles were in January and March 2004. The puddled areas in Gresik
Regency covered Cerme Sub-district and Duduk Sampeyan Sub-district,
Cermenlerek Village Gorekan Kidul Village with puddle height 1,5
mand puddled 600 Ha farm and settlement area as presented in Figure
3.6.
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Figure 3.6. Puddle Map of Lamong River Flood on 12 March 2004
Source : Study on Detailed Design and Environmental Impact Assessm,ent for Lamong River in Gresik Regency, Year 2005
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mainly damaged, especially in the left side of the spillway top point
and downstream left wing.
3. Cermenlerek River Sub-Watershed
Cermenlerek River is located in Cermenlerek Village and Beton
Village. Its length is 8 km and the watershed area is 56 km. During
the wet season, the water flow rate is pretty high, while during dry
season, it is relatively zero. The right and left embankments of the
river is quite tall, about 3.0 m from the river bed. However, it does
not mean that the Cermenlerek River is always capable of storing the
flow rate of the water. In the downstream, about 250 m from the,
there is a 2 x 1,25 x 3,0 m water gate that, at present, still function to
drain the annual waterfow.
4. Menganti River Sub-Watershed
Menganti River Sub-Watershed is located in Bringkang Village and
Menganti Village, Menganti Sub-district with an area of 39 km and
length of 10.5 km. It is meandering with average width of 20.00 m.
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Figure 3.7. Distribution of Lamong River Watershed
Source : Study on Detailed Design and Environmental Impact Assessm,ent for Lamong River in Gresik Regency, Year 2005
The river analysis based on the results of Study on Detailed Design and
Environmental Impact Assessm,ent for Lamong River in Gresik
Regency, Year 2005, as the it is based on the Lamong River flood
control and devlopment. The results of the analysis on the rain from 6
rain monitoring stations in Lamong River Sub-Watershed, the rain fall
volume in each of the Lamong River Sub-Watershed are presented in
Remarks :
Big River
Small RiverSub-district
Border
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The results of analysis on the planned rainfall volume in various
recurrent periods in each set point are presented in Table 3.7. as
follows.
Table 3.7. Planned Rainfall Volume (m3/det)Lamong River
Sub-Watershed in Various Recurrent Year
Source : Study on Detailed Design and Environmental Impact Assessm,ent for Lamong River
in Gresik Regency, Year 2005
The measurable monthly average river flow rates in Boboh Station
(Location of AWLR in Lamong River) are presented in the seperti
pada Table 3.8. as follows :
Calculation Method
Monitoring Point Q2 Q5 Q10 Q2
Lamong R.-Jablang R. Crossing Downstream 77 175 244 85
Lamong R.-Gondang R. Crossing Downstream 120 215 282 122
Lamong R.-Cermenlerek R. Crossing Downstream 136 237 308 120
Lamong R.-Menganti R. Crossing Downstream 149 261 339 132
Iker - Iker Estuary 125 224 293 115
Lamong R. Rubber Dam I 372 594 747 231
HSS Nakayasu
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The area utilized for fishponds in the Lamong River watershed is
relativelt large. Although, there have been conversions of findponds
into industrial estates, the number of inlets of fishponds up to Jono
Village are still significant
The seawater flows (backwater) drain salty water into the river surface
and make the river water brackish and contain higher salinity
compared to the one from fresh water draining into the Lamong River
watershed. The local people use the salty water to fill their fishponds
to breed fish and shrimps and produce salts.
Lamong River is also used as a traffic facility among the fishermen
residing in Pojok Village, Tenapes Village and Jono Village.
The data of the cross section of the river resulted from the previousstudy, from the estuary through 20 km towards the upstream are
presented below.
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A. Measurement of River Waterflow Speed
The locations of measurement and sampling points in Lamong River are
shown in thi figure below.
Figure 3.9. The locations of measurement and sampling points in Lamong River
The results measurement of river water flow speed in Lamong River are
presented in Table 3.9.
Table 3 9 Results of Measurement of Average Riverwater Flow Speed
0,0 0,5 1,0 1,5 2,0 km
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Table 3.10. Sediment Concentration Based on results of analysis
on floating sediment in Lamong River
Sampling STA Nr 1 Nr 2 Nr 3 Nr 4 Nr 5 Nr 6
Weight of Gross (gram) 578 588 591 580 593 602
Sediment Tare (gram) 24 22 22 21 22 22
Net (gram) 554 566 569 559 571 580
Container Nr.
Weight of Gross (gram) 1.6778 1.668 1.6755 1.6852 1.6631 1.6648
Sediment Tare (gram) 1.4933 1.4757 1.4645 1.4745 1.4834 1.4736
Net (gram) 0.1845 0.1923 0.211 0.2107 0.1797 0.1912Net (gram) 0.1845 01923 0.211 0.2107 0.1797 0.1912
Concentration (mg/lt) 319 327 357 363 303 318
Sampling STA Nr 7 Nr 8 No.9 No.10 No.11 No.12
Weight of Gross (gram) 600 598 588 588 594 580
Sediment Tare (gram) 22 21 22 21 21 22
Net (gram) 578 577 566 567 573 558
Container Nr.
Weight of Gross (gram) 1.6811 1.6654 1.6411 1.6418 1.6321 1.6439
Sediment Tare (gram) 1.4942 1.4995 1.4898 1.4912 1.4819 1.4985
Net (gram) 0.1869 0.1659 0.1513 0.1506 0.1502 0.1454
0.1869 0.1659 0.1513 0.1506 0.1502 0.1454
Concentration (mg/lt) 312 277 257 256 253 251
C Results of Analysis on Bed Sediment
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Figure 3.10. Distribution of Salinity, TDS and Conductivity in Lamong
River from the Estuary through Rubber DamSource : Study on Detailed Design and Environmental Impact Assessm,ent for Lamong River in Gresik
Regency, Year 2005
b Sememi River
Salinity, TDS and Conductivity Graphs
Sam le Numbes
Salinity
,TDS
and
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relatively shallow and its riverbanks are pretty low. In case of heavy
rains, such a condition always leads to water overflows
The worse is that, some residents in the South of Gunungarai Primary
Drainage, has holed the dams in the North to lower the floodwater
surface. Consequently, Jalan Raya Benowo is puddled longer and and
bear traffic congestion.
The channels in Babat Jerawat drainage with its upstream in Gresik
Regency are mostly natural. Only the ones found in real estate area are
embanked. The channels of Sememi River in the south area still natural.
c. Kali Branjangan (Kandangan)
In Surabaya City drainage networks, Branjangan River is called
Kandangan River.The chargacteristics and functions of this river are
similar to the ones of Sememi River. The upstream is located in
Kandangan Village, Benowo Sub-district. The area utilization is
indifferent from the ones of Sememi River, where fishponds spread
wide, although a few settlement areas are found (in the middle of the
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- Citra Raya and Citra Raya Timur secondary channel It is fully
walled and riprapped and its dimension is widened by the real estate
developer.
The foolds from Gunungsari primary drainage cause puddles in
Kandangan River watershed and around the natural river section.
d. Greges or Balong River
In Surabaya City drainage networks, Greges River is called Balong River.
Greges River is also a drainage following into Lamong Bay. Most parts of
the river have been riprapped, yet still under capacity. There is nmuch
sediment flowing in the channel. On the right and lift river banks, there
are already many factory plants constructed and draining most of their
wastes into the river. It worsens the sedimentation problem in the Greges
River. In the upstream there is a slide water gate controlling the water
flow downstream. The secondary channels flowing into Greges River are
Margomulyo Secondary Channel, Darmo Harapan Secondary Channel,
Darmo Indah Secondary Channel Lontar Secondary Channle Gadelsari
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waterflow in the reservoir is controlled by water gates and pumps. The
water flowing into the reservoir is from Greges Channel, Perak Channel
and Simo River. The reservoir is full of rubbish. Flood is present in
Gunungsari Primary Drainage due to the overflows from the upstream
when the flows enter the siphon and in the down stream between
Gunungsari Primary Drainage and Morokrembangan reservoir.
The problems of floods in Lamong River watershed and it tributaries are
typically indifferent from the ones in Surabaya City. Mainly, it is due to :
Heavy torrents.
Area topography and river angle downstream (< 1%).
Ineffective drainage networks and system and inconsistent with the present
spatial utilization concerning with surface erosion and rain precipitation.
There is specific reference for the water surface on streets and dwelling
areas and the ones in drainage channels.
There is no river provided with water gates to cope with back waterto the
river and channels.
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The results of survey on Small Rivers are presented in Table 3.12below.
Table 3.12. Results of Waterflow Surveys in Sememi River, BranjanganRiver, Greges River, Anak River and Krembangan River
Nr X Y Depth an (m) Speed (m/dt)
Upper
Width
(m)
Flow
Rate
(m3/dt)
Remarks
1 682408 9202710 1.35 0.17 19.00 4.36 High Tide at 11.00 Sememi Bridge
2 680554 9199924 0.45 0.13 8.30 0.50 Low Tide at 12.30 Middle Sememi
3 680068 9199114 0.05 0.82 1.14 0.05 Box Culvert Sememi Usptream
4 683714 9201062 1.08 0.21 15.60 3.61 High Tide 10.45 BranjanganBridge
5 682747 9198270 0.42 0.18 7.60 0.56 Low Tide Miidle Branjangan
6 682710 9197954 1.55 0.11 19.50 3.32 Low Tide at 13.47 Branjangan Upstream
7 685230 9200506 0.78 0.38 22.60 6.79 High Tide at 10.00 Greges Bridge
8 685168 9197354 0.35 1.02 3.00 1.07 Box culvert Surut Greges Upstream
9 686137 9200530 1.15 0.20 37.20 8.56 High Tide at 9.45 Anak Tiver Bridge
10 686954 9198860 0.16 0.87 2.50 0.34 Box culvert low tide Anak River upstream
11 688488 9200516 0.82 0.13 19.50 2.12 High tide at 9.15 Krembangan River Bridge
12 689125 9197188 0.52 0.28 6.50 0.93
Low tide at 15.25 Krembangan River
upstream
13 689842 9200256 1.10 0.09 12.70 1.30 High tide at 09.00 Greges River Bridge
14 689635 9198780 0.57 0.18 33.00 3.30 Low Tide at 15.53 Middle Greges River
15 689445 9198002 0 40 0 34 12 80 1 76 Low tide Greges River upstreamHulu
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Lamong Bay and surrounding river estuaries are shallow water areas during
high tide and surface areas during low tide.
During low tide, the wetted channels in the estuary of Lamong River are
apparent. In this shallow water area the angle of the seabed is slightly soping.
Towards the sea, some parts of Lamong Bay are included into the shipping
routes of Tanjung Perak Port. The channels are pretty deep, reaching 20 m
depth. The shift from shallow waters to the shipping routes forms relatively
steep seabed. The geometric shape of Lamong Bay as resulted from the
bathymetry measurement is presented in Figure 3.11.
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b. TideIn the the Study on Technical and Environmental Reviews on Shipping
Routes, Sedimentation and Reclamation in Coastal Area in Madura Strait,
2001, the tide was observed in some points for 29 days. Based on the results
of the observation the constants of the tide were processed by means of Least
Square Method, to identify the dominant tidal components close to the
observation points in in the studied area in Tanjung Widoro, Sembilangan,
Tanjungan, Kesek Timur, Gresik and Kenjeran.
The results of the observation on the tide in those observation points are
presented Figure 3.12.and Figure 3.13.
The resulted calculation of constants of tide are presented in Table 3.13.
Table 3.13. Tidal Components in Six Observation Points
Tidal
Compo
-nents
Obs. Point
T.Widoro
Obs. Point
Sembilangan
Obs. Point
Gresik
Obs. Point
Tajungan
Obs. Point
Kenjeran
Obs. Point
Kesek Timur
A(cm) g (o) A(cm) g (o) A(cm) g (o) A(cm) g (o) A(cm) g (o) A(cm) g (o)
So 120.57 - 89.82 - 193.03 - 73.43 - 76.96 - 67.72 -
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Lokasi: Tanjung Widoro
-150
-100
-50
0
50
100
150
Elevasimukaair(cm)
Lokasi: Gresik
-150
-100
-50
0
50
100
150
Elevasimukaair(cm)
Lokasi: Kenjeran
Obs Point: Tanjung Widoro
Obs Point: Gresik
Obs Point: Kenjeran
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Lokasi: Kesek Timur
150
Lokasi: Tajungan
-150
-100
-50
0
50
100
150
Elevasimuk
aair(cm)
Lokasi: Sembilangan
-150
-100
-50
0
50
100
150
Elevasimukaair(cm)
Obs Point: Sembilangan
Obs Point: Tajungan
Obs Point: Kesek Timur
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Where : A : amplitude
g : phase diference
M2 : main component of the moon (semi diurnal)S2 : main component of the sun (semi diurnal)
N2 : eliptic component of the moon
K2 : component of moon-sun (semi diurnal)
K1 : component of moon-sun (diurnal)
O1 : main component of the moon (diurnal)
P1 : main component of the sun (semi diurnal)
M4 : tidal component of shallow water (quarterdiurnal)
MS4 : tidal component of shallow water (compound tide)
Based on the results of calculation of the main tidal constants, the value of
Formzhal (F) can be identified to determine the tide in the studied area
(Defant, 1958). The value of Formzhal is determined by comparing the total
amplitude of components K1and O1 and the total components of M2and S2, or
in the following equation :
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Table 3.14. Tidal Types Based on Formzhal Value
Nr Observation PointFomzhal
Value
Tidal Types
1 Tanjung Widoro 2,74 Mixed, dominant diurnal
2 Sembilangan 2,25 Mixed, dominant diurnal
3 Gresik 1,62 Mixed, dominant diurnal
4 Tajungan 1,44 Mixed, dominant semi diurnal
5 Kenjeran 1,12 Mixed, dominant semi diurnal
6 Kesek Timur 0,93 Mixed, dominant semi diurnal
Source : Study on Technical and Environmental Reviews on Shipping Routes, Sedimentation and
Reclamation in Coastal Area in Madura Strait, 2001
Based on the calculated Formzhal value from the the tidal main constants, it
shows that the tidal type in Gresik is Mixed Diu rnal Dominant Tide, where
in one day there is high tide once and low tide once. In case of neap tide, in
one day there are 2 high tides and 2 low tide. In Kenjeran the tidal type is
Mixed Semi Diurnal Dominant Tide, where in one day there are high
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Referring to the comparison of the important elevations in those two
observation points, it shows that the tidal elevation in Kenjeran is higher than
the one in Gresik. The studied area is in between the two observation points in
observation points Kenjeran and Gresik. Accordingly, when the mean of HWS
in Gresik and Kenjeran is adopted, the predicted HWS in the studied area is
+283,41 LWS. This elevation is supposed to be adopted as prime
consideration in determining the reclamation elevation.
c. Water Current
In the Study on Technical and Environmental Reviews on Shipping Routes,
Sedimentation and Reclamation in Coastal Area in Madura Strait, 2001, some
measurements on water currents are conducted around the project site. The
results of the measurements are presented in Table 3.16.
Table 3.16. Minimum and Maximum Currents Measured in Each
Observation Point
ObservationNeapTide Spring Tide
Di i Di i
h l f h h h h i i h
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The results of the measurements show that the maximum current in the
shipping routes is 0.62 m/dt. In other occasions, the current speed in the
shipping routes can reach 1.0 m/dt, while in shallow waters, the averagecurrent speed is relatively small i.e. : 0.1 m/dt.
Keterangan :
U
AR 1
AR 2
Remark:
Th lt f th t t b d t d d t i t t
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The results of the current measurement can be adopted as data input to
modelling by means ofsoftware: SMS 8.0. The modelling of the existing
conditions are presented in Figure 3.15and Figure3.16.
Figure 3.15. Current Movement in High Tide (Timestep189)
Planned Shallow Water
Reclamation + 50 Ha
Connecting Bridge (on pile)
Causeway
d S di t
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d. Sediment
The bed sediment gradation as resulted from the analysis on sample taken in
the shipping routes in Lamong Bay is resented in Table3.17.
Table 3.17. Results of Analysis on Bed Sediment in Studied Area
Sediment Properties
Locations of Sampel
S1 S2 S3
Specific Gravity 2.673 2.653 2.674
Finer #200 (%) 19.88 84.15 79.36
Gravel (%) 38.1 2.8 1.1
Sand (%) 42.0 13.1 19.6
Silt (%) 19.9 65.2 56.0
Clay (%) 0.0 18.9 23.3
Source : Study on Technical and Environmental Reviews on Shipping Routes,
Sedimentation and Reclamation in Coastal Area in Madura Strait, 2001
The concentration of floating sediments taken from the shipping routes in
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contoh sedimenLokasi pengambilan
Keterangan:
U
S 1
S 2
Remarks :S1 = In front of Lamong
RiverS2 = Close
toreclamation area
for container yard
t ti
Sediment Sampling
Points
Remarks :
MADURA ISLAND
JAVA
Based on the results of bed sediment measurement the concentration of
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Based on the results of bed sediment measurement, the concentration of
sediment and condition of sediment due to seawater current movements are
modeled (See Figure 3.18and Figure 3.19).
Figure 3.18. Existing Floating Sediment Concentration
Planned Shallow Water
Reclamation + 50 Ha
Connecting Bridge (on pile)
Causeway
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There are of patterns of domination in the sampling points surounding the
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There are of patterns of domination in the sampling points surounding the
estuary and the sea. The most dominant phytoplankton in the sampling
points surrounding the estuary is Skeletonema sp (> 37%) and the one inthe sampling points in the sea is Volvox sp (> 49%).
Based on the phytoplankton diversity index, the structures of the
phytoplankton community in the studied area is slassified stable until
more than stable, with condition of waters classified fair to good The
highest diversity index is found in point 1 (1.98) and the lowest one in
point 3 (1.30) (See Figure 3.20).
The higher the diversity index is the more stable the community will be.
The more various species in a community, the more stable the community
will be. The more various species in a community is the more complex food
chain will be. The community with less species will have shorter food
chain, and this condition will make the community unstable. The loss of a
species may lead to the loss of other species. The loss of a certain species
can be favorable to the other species and lead to extreme abundance.
b. Zooplankton
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b.Zooplankton
In the studied area there are 43 species of zooplanktons found and
comprising : Crustacea, fish larva, gelatinous plankton, larva Mollusca,larva Polychaeta, Nematoda, Chaetognatha, Protozoa, and Foraminifera.
The most dominant species is Copepoda Calanoida of Acartiidae family
andEucalanidaeas well asBrachyura larva (crab) stadia zoea (See Table
3.20).
Almost in all sampling points around the estuary, both economically and
uneconomically potential fish larva are found. Accordingly, it is probable
that the areas surrounding the estuary and mangrove in Lamong Bay are
hatching grounds and nursery grounds of fish. The existence of larva is
predicted to have relationship with the existence and abundance of natural
food of fish larva, i.e. : Copepoda(ofAcartiidaeandEucalanidae families)
and other Crustacea, such as CirripediadanzoeaBrachyura larva (crab).
Fish larvas bringing economic values are gereh/laosan (of Polynemidae
family), milkfish (of Chanidaefamily), tiny sea fish (ofAtherinidae family),
belanak (of Mugilidae family) and lemuru (of Clupeidae family)
S li P i t
Z l kt Di it I d (H) i L B
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Figure 3.21. Value of Zooplankton Diversity Index (H)
in Lamong Bay (April 2008)
Bentik MicrofaunaThe bentikmicrofauna sampling points are the same as the ones of plankton
sampling. There are 18 species of benthos found surrounding Lamong Bay,
comprising 11 species of epifauna and 7 species of infauna. The dominating
epifauna is Gastropoda (snails), such as : Astyris rosacea, Amphyssa
Sampling Points :
1. Lamong RiverEstuary
2. Sememi RiverEstuary
3. Sememi R.-
Branjangan R.Eastuary
4. Branjangan RiverEstuary
5. Greges RiverEstuary
6. Anak RiverEstuary
7. Anak R.-Branjangan R.Estuary
8. KrembanganRiver Estuary
9. Mirah Pier10. Around Mirah
Pier11. Around Mirah
Pier
12. In front of Bay
Zooplankton Diversity Index (H) in LamongBay
HValue
Sampling Points
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Figure 3.22. Value of Bentik Microfauna Diversity Index (H)
in Lamong Bay (April 2008)
Sampling Points :
1. Lamong RiverEstuary
2. Sememi RiverEstuary
3. Sememi R.-Branjangan R.Eastuary
4. Branjangan RiverEstuary
5. Greges RiverEstuary
6. Anak RiverEstuary
7. Anak R.-Branjangan R.Estuary
8. KrembanganRiver Estuary
9. Mirah Pier10.Around Mirah
Pier11.Around Mirah
Pier
12.In front of BaySampling Points
HValue
Bentik Microfauna Diversity Index (H) in LamongBay
Table 3.20. Composition, Abundance and Diversity Index of Phytoplankton in Waters Area in Lamong Bay
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 3-44Environmental Impact Assessment Tanjung Perak Port Development in Lamong B ay
Table 3.21. Composition, Abundance and Diversity Index of Zooplankton in Waters Area in Lamong Bay
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 3-45Environmental Impact Assessment Tanjung Perak Port Development in Lamong B ay
Tabel 3.22. Composition, Abundance and Diversity Index of Bentik Macrofauna in Waters Area in Lamong Bay
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 3-46Environmental Impact Assessment Tanjung Perak Port Development in Lamong B ay
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3.4.3. Terrestrial Flora and Fauna
Flora (Mangrove Vegetation)
The initial description of terrestrial flora is focused onmangrove vegetatio as
the project site of port development in Lamong Bay is in coastal ecosystem
and the representative and relevant terrestrial vegetation is mangrove.
Mangorove ecosystem is an ecosystem with tropical community vegetation
growing the coastal area and river estuaries. Mangrove ecosystem is affected
by tide and is sensitive to environmenta changes, such as : salinity, shallowing,
oil spills and sedimentation. The parameters adopted for observing the initial
conditions of the mangrove environment and ecosystem is vegetation density
per hectare (tree/Ha), Important Value Index and Mangrove Coverage
Area(%)
The analysis on mangrove vegetation is conducted in 8 observation point in
North Galang Island, South Galang Island, Lamong River Border, Sememmi
River Estuary, Branjangan River Estuary, Project Site, Greges River Estuary,
and Anak River Restuary The mangrove vegetation is not conserved as the
Table 3.23. Density (Trees/Ha)
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Nr Spesies PGU PGS KL KS KB LP KG KA
1 Aegiceras corniculatum 33
2 Avicennia alba 1650 4554 990 990 4752 198 5613 Avicennia lanata 66
4 Avicennia marina 363 297 957 2970 495 6732 264
5 Bruguiera gymnorrhiza 99
6 Bruguiera parviflora 66
7 Exoecaria agallocha 297 33
8 Lumnitzera racemosa 66
9 Rhizophora apiculata 396 264 1023
10 Rhizophora mucronata 1353 33 4158 33 1353
11 Sonneratia alba 429 33 2046 198 726 99 594
12 Soneratia caseolaris 132
13 Xylocarpus granatum 33 66
Jumlah spesies 5 4 7 3 6 5 6 3
Remarks:
PGU : North Galang Island KB : Branjangan River
PGS : South Galang island LP : Project Site
KL : Lamong River KG : Greges RiverKS : Sememi River KA : Anak River
Density criteria and mangrove category (Decision of Minister of Environment Nr. 201/2004).
Density Criteria Trees/Ha Category
Dense > 1500 Good
Fair > 1000 - < 1500 Fair
Rare/Damaged < 1000 Bad
The mangrove density in the project site that is pretty high isR. mucronata.
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It is a mangrove species adapting with surface land. It is commonly used to
protect the fishpond embankments to stand erosion and sedimentation so
that the fishpond water keeps clear.
.
Mangrove Density (Trees/Ha)
2904
4917
4026 4059
8085
5676
7524
2211
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
PGU PGS KL KS KB LP KG KALocation
TotalIndividu
otal Trees/Ha
Figure 3.23. Mangrove Density Per Hectare
Table 3.24. Important Value Index (IVI) of Mangrove Species
N S i PGU PGS KL KS KB LP KG KA
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Nr Spesies PGU PGS KL KS KB LP KG KA
1 Aegiceras corniculatum 15.2
2 Avicennia alba 149.4 228.6 65.6 78.6 132.7 14.9 42.23 Avicennia lanata 10.2
4 Avicennia marina 28.5 40.6 65.3 89.5 38.2 208.4 47.6
5 Bruguiera gymnorrhiza 12.5
6 Bruguiera parviflora 15.9
7 Exoecaria agallocha 27.5 11.7
8 Lumnitzera racemosa 10.2
9 Rhizophora apiculata 52.5 15.4 73.9
10 Rhizophora mucronata 89.3 9.7 165.2 11.7 173.4
11 Sonneratia alba 53.7 15.6 147.5 47.7 69.2 12.9 79
12 Soneratia caseolaris 27.4
13 Xylocarpus granatum 9.5 13.1
Remarks:
PGU : North Galang Island KB : Branjangan River
PGS : South Galang island LP : Project Site
KL : Lamong River KG : Greges RiverKS : Sememi River KA : Anak River
IVI Criteria (Odum, 2005)
Density Criteria IVI Category
Important 201300 Good
Fair 101200 Fair
P 1 100 P
Coverage Area
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g
67.6
93.1
62.24
85.5
61.9 62.268.6
0
20
40
6080
100
PGU PGS KL KS KB LP KG KA
Location
%Coverage
Avicennia alba
Avicennia mar ina
Rhizophora mucronata
Sonneratia alba
Figure 3.24. Good and Fair Category of Mangrove Coverage
The detailed coverage area of each mangrove species are presented in
Table 3.25.
Table 3.25. Coverage Area (%)
No Spesies PGU PGS KL KS KB LP KG KA
1 Aegiceras corniculatum 0.3
2 Avicennia alba 67.6 93.1 26.7 25.6 62.24 1.5 12.5
3 Avicennia lanata 0.38
3.4.1. Fauna (Birds)
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a. Identified Spesies
There are 39 species of birds included in 22 families found in the studied
area. Ardeidae family has the most number of species, i.e. : 8 species
(Table 3.26).
In the observation point in Sememi River the most number of bird species,
i.e. : 24, while in Lamong River and estuary of Branjangan River 23
species, and in the project site, 9 species identified (Figure 3.25), that are
included into 7 families, namely : Alcedinidae, Apodidae, Ardeidae,
Artamidae, Nectarinidae, Picidae danSilviidae.
Identified Bird Species
2019
23 24
9
23
1613
10
15
20
25
30
TotalSpecies
Number of Species
Table 3.26. Bird Species Identified in Observation Points
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Nr Spesies Indonesian Name Familia PG1 PG2 KL KS LP KB KG KA Fr
1 Alcedo coerulescens Raja udang biru Alcedinidae 1 1 1 1 1 5
2Amaurornisphoenicurus Kareo padi Rallidae 1 1 2
3 Anas gibberifrons Itik benjut Anatidae 1 1 2
4 Ardea purpurea Cangak merah Ardeidae 1 1 1 3
5 Ardeola speciosa Blekok sawah Ardeidae 1 1 1 1 1 1 6
6 Artamus leucorhynchus Kekep babi Artamidae 1 1 2
7 Butorides striatus Kokokan laut Ardeidae 1 1 1 1 1 1 1 7
8 Chlidonias hybridus Dara-laut kumis Sternidae 1 1 1 3
9 Collocalia esculenta Walet sapi Apodidae 1 1 1 1 1 1 1 1 8
10 Collocalia maxima Walet sarang hitam Apodidae 1 1 2
11 Dendrocopus macei Caladi ulam Picidae 1 1 1 1 4
12 Dicaeum trochileum Cabai jawa Dicaeidae 1 1 1 1 1 513 Egretta alba Kuntul besar Ardeidae 1 1 1 1 1 1 6
14 Egretta garzetta Kuntul kecil Ardeidae 1 1 1 1 1 1 1 1 8
15 Egretta intermedia Kuntul perak Ardeidae 1 1 1 1 1 5
16 Gallinula chloropus Mandar batu Rallidae 1 1
17 Geopelia striata Perkutut jawa Columbidae 1 1
18 Gerygone sulphurea Remetuk laut Silviidae 1 1 1 1 1 1 1 1 8
19 Hirundo rusticaLayang-layangrumah
Hirundinidae 1 1
20 Ixobrychus sinensis Bambangan kuning Ardeidae 1 1 2
21Lonchura
leucogastroides
Bondol jawa Ploceidae 1 1 1 3
22 Lonchura punctulata Bondol peking Ploceidae 1 1 2
23 Merops sp. Kirik-kirik Meropidae 1 1
24 Mycteria cinerea Bangau bluwok Ciconiidae 1 1
25 Nectarinia jugularisBurung madu
srigantiNectariniidae 1 1 1 1 1 1 6
26 Nycticorax nycticoraxKowak malam
kelabuArdeidae 1 1 1 1 1 1 6
27 Passer montanus Burung gereja erasia Silviidae 1 1
Phalacrocoracida
Conserved Bird Species
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`
Figure 3.26. Conserved Bird Species
The 14 species identified and found in the studied area are classified into 6
families, namely : Alcedinidae, Ardeidae, Ciconiidae, Nectariniidae,Muscicapidaeand Sternidae.Egretta garzetta (small heron) is the species
that s always found in the 8 observation points. Therefore, it is the most
frequently identified species compared to the others. Mycteria cinerea
(Bluwok heron) is not only conserved by means of the Indonesian State
TotalSpecies
Location
ConservedSpecies
Table 3.27. Conserved Bird Species
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Table 3.27. Conserved Bird Species
Nr Spesies Indonesian Name Famiyi Remrk PG1 PG2 KL KS LP KB KG KA Fr
1 Alcedo coerulescens Raja udang biru Alcedinidae * 0 1 1 1 1 1 0 0 5
2 Ardea purpurea Cangak merah Ardeidae * 1 1 0 1 0 0 0 0 3
3 Ardeola speciosa Blekok sawah Ardeidae * 1 1 0 1 0 1 1 1 6
4 Butorides striatus Kokokan laut Ardeidae * 1 1 1 1 1 1 1 0 7
5 Egretta alba Kuntul besar Ardeidae * 1 1 1 1 0 0 1 1 6
6 Egretta garzetta Kuntul kecil Ardeidae * 1 1 1 1 1 1 1 1 8
7 Egretta intermedia Kuntul perak Ardeidae * 1 1 1 1 0 0 1 0 5
8 Ixobrychus sinensis Bambangan kuning Ardeidae * 0 0 0 0 1 0 0 1 2
9 Mycteria cinerea Bangau bluwok Ciconiidae */**Vu 0 0 0 1 0 0 0 0 1
10 Nectarinia jugularis Burung madu sriganti Nectariniidae * 0 1 1 1 1 1 1 0 6
11 Nycticorax nycticorax Kowak malam kelabu Ardeidae * 1 1 0 1 0 1 1 1 6
12 Rhipidura javanica Kipasan belang Muscicapidae * 1 1 1 1 0 1 0 0 5
13 Sterna hirundo Dara-laut biasa Sternidae * 1 1 1 1 0 0 0 1 5
14 Todirhamphus chloris Cekakak sungai Alcedinidae * 1 1 0 1 0 1 1 1 6
10 12 8 13 5 8 8 7
* Conserved by Indonesian State Regulation Nr. 7 Year 1999(Based on Bird Family)** Status based on IUCN Red List (http://www.iucnredlist.org/search/search-basic)LC (Least Concern) when exist in abundant number and widely spreadVu (Vulnerable) : Vulnerable to extinction
Remarks:
PGU : North Galang Island LP : Project Site F ; FrequencyPGS : South Galang island KG : Greges RiverKL : Lamong River KA : Anak River
KS : Sememi River 0 : Not IdentifiedKB B j Ri 1 Id tifi d
Table 3.28. List of Villages Included into Studied Area
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Sub-districts Villages
Asemrowo Kalianak
Greges
Tambak Langon
Krembangan Morokrembangan
Benowo Romokalisari
Tambak Osowilangon
Source : Statistical Data Surabaya in Numbes in 2007
The locations of socio-economic and culture survey areas are presented
Figure 3.28.
A. Population
In Surabaya City, there are 5 Assistant Mayor territory and Sub-districts
with a total area of 326,37 km
2
with total polulation 2.405.946 persons.It short, the population density in Surabaya City is pretty high, i.e. :
7.372 persons/km2. Of the 28 sub-districts, 3 of them are the studied area,
namely Krembangan Sub-district, Asemrowo Sub-district and Benowo
Sub-district.
0830
210
0800
0693267
Remarks Observation Point of Socio-Economic andCulture Components
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REPORT OF ENVIRONMENTAL IMPACT STATEMENT 3-57Environmental Impact Assessment Tanjung Perak Port Development in Lamong Ba y
Source :
DIGITAL INDONESIAN MAP YEAR 1999I I
1 0 1SKALAU
TA R
A
1430
1400
9200
1330
1300
1230
1200
1130
1100
9205
1030
1000
0930
0900
92
440
443
91982429198293 380
383
0680
Balongsa
393
0685
Balongsa
410
413
420
06
0693214
-
-
Figure 3.28
Observation Point of Socio-Economic and Culture Components
Rute nelayan melaut
tanpa kegiatan
Rute nelayan melaut
dengan kegiatan
Table 3.29. Total Population and Population Density in Studied Area
City Villages Area (ha)Population Density
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City Villages Area (ha) (Persons) (Persons/ha)
Surabaya
Kalianak 202,0921.479 7
Greges 419 4.033 10
Tambak Langon 228 2.259 9,91
Morokrembangan 317,1 35.303 111
Romokalisari 756 2.109 3
Tb Osowilangon 846 3.263 4
Source : Monograph Data Year 2006-2008 from vatious villages in the Studied Area of
Environmental Impact Assessment for Tanjung Perak Port Development in Lamong Bay
Occupation
The population has various jobs, although many of the them are still
jobless. In Kalianak Village, most of the population works in private sector
(23.58%). Yet, the number of the jobless people is significant (61.58%).
In Greges Village most of the population is students (42.13%), fishermen
(19 51%) d l b (17 78%) I M k b Vill t f th
Table 3.30. Occupations of Populations in Studied Area
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Nr Occupations
VILLAGES
Kalianak Greges Tb LangonMoro
krembangan
Romokali
sari
Tb Oso
WilangonPercentage
(%)Percentage
(%)Percentage
(%)Percentage
(%)Percentage
(%)Percentage
(%)
1 Unemployed 61,58 2,26 5,7 0,35 91,75 39,85
2 Farmer 0,00 0,35 1,36 0,11 0,00 2,12
3 Fisherman 1,04 19,51 1,85 0,14 0,38 3,70
4 Merchant 0,69 4,92 25,56 1,30 0,14 3,03
5 Public Servant 0,55 0,80 0,80 3,21 0,24 0,49
6 Armed Force 0,49 0,67 0,00 1,91 0,33 0,12
7 Police 0,14 0,13 0,00 1,66 0,00 0,00
8 Ret. Armed Forces 0,00 0,44 0,00 0,78 0,00 0,21
9 Retired Police 0,00 0,00 0,00 0,37 0,00 0,00
10 Ret. Pub. Servant 0,07 0,49 0,00 21,06 0,00 0,09
11 Private Merchant 23,58 5,28 12,78 8,44 0,00 14,29
12 Private Person 0,55 2,44 12,78 9,29 0,28 12,75
13 Labor 0,42 17,78 9,09 0,12 6,88 0,15
14 Maid 0,00 0,00 0,00 0,09 0,00 0,27
15 Student 10,40 42,13 11,9 47,30 0,00 20,79
16 College Student 0,35 2,44 0,00 2,51 0,00 1,12
17 Medical Doctor 0,00 0,00 9,09 0,09 0,00 0,06
18 Teacher/Lecturer 0,07 0,18 9,09 1,15 0,00 0,85
19 Medical Practitioner 0,07 0,18 0,00 0,13 0,00 0,09
20 Public Officer 0,00 0,00 0,00 0,00 0,00 0,00
Population Income
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1. Greges Village
Based on the results of household survey in Greges Village, it is found
that the most dominant income range of the population is Rp. 701,000
Rp. 1,000,000 (35%). 29% of the population earns Rp. 300,000 Rp.
700,000. 20% of the population earns > Rp. 1,000,000 while 16% earns
< Rp. 300,000. The details of the income are presented in Figure 3.29
below.
Population Income
Penghasilan Nelayan
Fisherman Income
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Figure 3.30. Percentage of Fisherman Income in Greges Village
The main occupation of the population in Greges Village is as
fisherman. They have side jobs, such as private sector, boat maker and
serviceman, teacher and labor.
2. Kalianak Village
12%
41%
12%
35%
< Rp. 300.000
Rp. 300.000 - Rp. 700.000
Rp. 701.000 - Rp. 1.000.000
> Rp. 1.000.000
Penghasilan Penduduk
Population Income
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Figure 3.31. Percentage of Main Occupations in Kalianak Village
The percentage of income of the population as fishermen in Kalianak
Village are at most 56%, earning < Rp.300,000. 44% earns >Rp.1,000,000, at the second rank. Further details are presented in
Figure 3.32.below.
18%
10%
28%
44%
< Rp. 300.000
Rp. 300.000 - Rp. 700.000
Rp. 701.000 - Rp. 1.000.000
> Rp. 1.000.000
3. Morokrembangan Village
d h l f h h ld i k b ill
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Based on the results of household survey in Morokrembangan Village,
it is found that the most dominant income range of the population is >
Rp. 300,000 Rp. 700,000 (38%). 38% of the population earns >
1,000,000. 19% earn Rp. 701,000 Rp. 1,000,000 in the second rank.
5% of the population earns < Rp. 300, 000,000. The details of the
income are presented in Figure 3.33.below.
5%
38%
19%
38%
Penghasilan Penduduk
< Rp. 300.000
Rp. 300.000 - Rp. 700.000
Rp. 701.000 - Rp. 1.000.000
> Rp. 1.000.000
Population Income
h il l
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Figure 3.34. Percentage of Fisherman Income in Morokrembangan
Village
Based on the results of household interviews the main occupation of the
population in Morokrembangan Village is as fisherman. They have no
id j b
12%
75%
0%13%
Penghasilan Nelayan
< Rp. 300.000
Rp. 300.000 - Rp. 700.000
Rp. 701.000 - Rp. 1.000.000
> Rp. 1.000.000
Population Income
P h il P d d k
S l
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Figure 3.35. Percentage of Main Occupations in Tambak
Osowilangun Village
The percentage of income of the population as fishermen in Tambak
Osowilangun Village are at most 70%, earning Rp. 300,000
Rp.1,000,000. 20% earns > Rp.1,000,000, at the second rank. 10%
17%
39%22%
22%
Penghasilan Penduduk
< Rp. 300.000
Rp. 300.000 - Rp. 700.000
Rp. 701.000 - Rp. 1.000.000
> Rp. 1.000.000
Scale
Based on the results of household interviews the main occupation of the
population in Tambak Osowilangun Village is as fisherman. They have
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side jobs, such as : labor, salt loading unloading porter, fishpond worker
and private person.
5. Tambak Langon Village
Based on the results of household survey in Tambak Langon Village, it
is found that the most dominant income range of the population is Rp.
300,000 Rp. 700,000 (59%). 22% of the population earns > Rp.
1,000,000 in the second rank. 15% of the population earns Rp, 701,000
Rp. 1,000,000. 4% earns < R. 300,000. The details of the income are
presented in Figure 3.37.below.
4%
22%
Penghasilan Penduduk
< Rp. 300.000
R 300 000 R 700 000
Population Income
Penghasilan Nelayan
Fisherman Income
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Figure 3.38. Percentage of Fisherman Income in Tambak Langon
Village
Based on the results of household interviews the main occupation of thepopulation in Tambak Langon Village is as fisherman. They have side
jobs, such as : labor and loading and unloading porter.
6. Romokalisari Village
0%
57%
0%
43%
< Rp. 300.000
Rp. 300.000 - Rp. 700.000
Rp. 701.000 - Rp. 1.000.000
> Rp. 1.000.000
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Based on the results of household interviews the main occupation of the
population in Romokalisari Village is as fisherman. They have side
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jobs, such as : seasonal brick layer and carpenter.