Amendment No. 2 to the Loan Agreement

  Quarterly Report No.13 (January – March 2017) Construction Supervision Consultant for JUFMP/JEDI

i

  2.5.5 Procurement............................................................................................................................................................................. 20

  2.3.3 Consumed Staff-Months ......................................................................................................................................................... 14

  2.3.4 Reporting .................................................................................................................................................................................. 18

  2.3.5 Cost of Consulting Services ................................................................................................................................................... 18

  

2.4 Construction Supervision Activities ...................................................................................................................... 18

  2.4.1 Dredging and Embankment Protection Works ..................................................................................................................... 18

  2.4.2 Quality Assurance/Quality Control ........................................................................................................................................ 19

  2.4.3 Mechanical / Electrical Works ................................................................................................................................................ 19

  

2.5 Non-construction Supervision Activities .............................................................................................................. 20

  2.5.1 Environment Management and Monitoring ......................................................................................................................... 20

  2.5.2 Implementation of Resettlement Plan ................................................................................................................................... 20

  2.5.3 Grievance Redness System/Complaint Handling ................................................................................................................ 20

  2.5.4 Project Management Information System (PMIS) and Data Management ......................................................................... 20

  2.5.6 Project Completion Report (PCR) .......................................................................................................................................... 21

  2.3.1 Establishment of Consultant Head Office and Site Offices ................................................................................................ 14

  

CHAPTER 3 PROJECT ACTIVITIES AND PROGRESS ........................................................................................... 22

  

3.1 General ..................................................................................................................................................................... 22

  

3.2 Main Activities and Progress of Construction Packages .................................................................................... 25

  

3.2.1 Main Activities .......................................................................................................................................................... 25

  

3.2.2 Maintenance Activities in the Packages ................................................................................................................ 35

  

3.2.3 Maintenance Actitities of Packages in Defects Liability Period (Q1 2017) ......................................................... 35

  

3.2.3.1 Package 4 ................................................................................................................................................................. 35

  

3.2.3.2 Package 5 ................................................................................................................................................................. 36

  

3.2.3.3 Package 7 ................................................................................................................................................................. 37

  

3.2.4 Physical and Financial Progress ............................................................................................................................ 39

  

CHAPTER 4. ACTIVITIES PLANNED FOR THE NEXT QUARTER.......................................................................... 51

CHAPTER 5. ISSUES AND RECOMMENDATIONS .................................................................................................. 52

  

5.1 Issues ........................................................................................................................................................................ 52

  2.3.2 Mobilization of Consultant Personnel ................................................................................................................................... 14

  

2.3 Major Activities of the Consultant .......................................................................................................................... 14

  

TABLE OF CONTENTS

CHAPTER 1.

  

CHAPTER 2. ACTIVITIES OF CONSULTANTS .......................................................................................................... 9

   INTRODUCTION .................................................................................................................................... 1

  

1.1 Outline of Loan Agreement ....................................................................................................................................... 1

  

1.2 Project Location ......................................................................................................................................................... 2

  

1.3 Background of the Project ........................................................................................................................................ 3

  

1.4 Project Objectives ..................................................................................................................................................... 3

  

1.5 Construction Packages ............................................................................................................................................. 4

  1.5.1 Works of Construction Packages ............................................................................................................................................ 5

  1.5.2 Volume of Works ....................................................................................................................................................................... 6

  1.5.3 Dredging Methods ..................................................................................................................................................................... 7

  1.5.4 Transportation Methods ........................................................................................................................................................... 8

  1.5.5 Sequenced Project Implementation ........................................................................................................................................ 8

  1.5.6 Disposal Sites ............................................................................................................................................................................ 8

  

2.1 Summary of Consultants Key Activities .................................................................................................................. 9

  2.2.6 Construction Supervision Consultant ................................................................................................................................... 13

  2.1.1 Supervision of Works ................................................................................................................................................................ 9

  2.1.2 General Project Management ................................................................................................................................................... 9

  2.1.3 Environmental Management ................................................................................................................................................... 10

  2.1.4 Resettlement Plans (RPs) ....................................................................................................................................................... 10

  2.1.5 Grievance Redress(GR)/Complaint Handling Mechanism (GRM) ...................................................................................... 10

  2.1.6 Others ....................................................................................................................................................................................... 10

  

2.2 Project Organization ................................................................................................................................................ 10

  2.2.1 Project Implementation Arrangement ................................................................................................................................... 10

  2.2.2 Central Project Management Unit (CPMU) ............................................................................................................................ 12

  2.2.3 Central Project Implementation Unit (CPIU) ......................................................................................................................... 12

  2.2.4 Central Project Implementation Unit (CPIU) ......................................................................................................................... 12

  2.2.5 Project Implementing Units (PIUs)......................................................................................................................................... 13

  

5.2 Recommendations ................................................................................................................................................... 52

APPENDIX PROJECT PHOTOS .............................................................................................................................. 53

  Quarterly Report No.13 (January – March 2017) Construction Supervision Consultant for JUFMP/JEDI

ii

  

TABLES

Table 1. 1 Budget Allocation for Component 1 by Executing Agency and Package ........................................................................................................... 4

Table 1. 2 Budget Allocation for Component 2 ........................................................................................................................................................................ 5

Table 1. 3 Contract, Loan and APBN/D Sharing by Packages (in million IDR) ..................................................................................................................... 5

Table 1. 4 Floodways, Canals and Retention Basins of Construction Packages under the Project ......................................................................................... 6

Table 1. 5 Dredged Volume and Embankment Rehabilitation of Completed 7 Work Packages ......................................................................................... 7

Table 1. 6 Sequencing of Project Construction Works ........................................................................................................................................................... 8

Table 2. 1 Established Consultant Head Office and Site Offices ......................................................................................................................................... 14

Table 2. 2 Consultant Personnel Mobilized ............................................................................................................................................................................ 14

Table 2. 3 Consumed Person-Months of the Consultant ...................................................................................................................................................... 14

Table 2. 4 Financial Status of Consultant Contract ............................................................................................................................................................... 18

Table 2. 5 Contractors and Construction Status under JUFMP/JEDI .................................................................................................................................. 18

Table 3. 1 Packages Completed Defect Liability Period........................................................................................................................................................ 22

Table 3. 2 Packages in Defect Liability Period ....................................................................................................................................................................... 22

Table 3. 3 Contract, Loan and APBN/D Sharing by Package (in IDR) .................................................................................................................................. 22

Table 3. 4 Contract Amount and Disbursement by Package and Source of Fund (in IDR) ............................................................................................... 23

Table 3. 5 Dredging Work up to Q1 2017................................................................................................................................................................................. 23

Table 3. 6 Construction Work and Financial Progress, Q1 2017 .......................................................................................................................................... 24

Table 3. 7 Completion Date and Defects Liability Period ...................................................................................................................................................... 35

Table 3. 8 Sentiong Sunter Drain ............................................................................................................................................................................................. 35

Table 3. 9 Waduk Sunter Utara ................................................................................................................................................................................................. 35

Table 3. 10 Waduk Sunter Selatan ............................................................................................................................................................................................. 36

Table 3. 11 Waduk Sunter Timur III ............................................................................................................................................................................................ 36

Table 3. 12 Tanjungan, Lower Angke and Kamal Drain ........................................................................................................................................................... 36

Table 3. 13 Grogol Sekretaris Drain ........................................................................................................................................................................................... 37

Table 3. 14 Krukut Cideng Drain ................................................................................................................................................................................................ 37

Table 3. 15 Pakin Drain ............................................................................................................................................................................................................... 37

Table 3. 16 Krukut Lama Drain ................................................................................................................................................................................................... 38

Table 3. 17 Jelakeng Drain .......................................................................................................................................................................................................... 38

Table 3. 18 Kali Besar .................................................................................................................................................................................................................. 38

  

FIGURES

Figure 1.1 Loan allocation among Executing Agencies .......................................................................................................................................................... 2Figure 1.2 Budget Allocation for Component 1 of JUFMP (in million USD) .......................................................................................................................... 5 Figure 2. 1 Overall Implementation Arrangement .....................................................................................................................................................................11Figure 3.1 Financial Progress (Q1 2017, billion IDR) ............................................................................................................................................................. 24Figure 3.2 Dredged Material Disposed at CDF Ancol (in thousand m3), Q1-2017* ............................................................................................................. 24

  Quarterly Report No.13 (January

  Construction Supervision Consultant for JUFMP/JEDI

• – March 2017)

1.1 Outline of Loan Agreement The outline of loan agreement of the Project is as follows.

  Korea Engineering Consultants Corp. in joint venture with PT. Puser Bumi Mekon,

  1 CHAPTER 1.

  INTRODUCTION

  Executing Agency : Directorate General of Water Resources, Ministry of Public Works and Housing Date of Sign Loan : February 17, 2012 Effective Date : 90 days after Loan Signing Closing Date : March 31, 2017 – Original Loan Agreement

  February 28, 2019 – Amendment No.2 Loan Amount : USD 139,640,000 Amendment No. 2 to the Loan Agreement The Project consists of the following parts:

  

Part 1. Dredging, rehabilitation and flow capacity improvement of selected key floodways, canals and retention

basins.

  (a) Dredging and rehabilitation of the Project sites consisting of eleven (11) floodways, with total length of approximately 67.5 kilometers long, and four (4) retention basins, with a total area of approximately 65.1 hectares, which have been identified as priority sections of the Jakarta flood management system in need of urgent rehabilitation and improvement in flow capacity; and transportation and disposal of materials dredged from the Project Sites in Disposal Sites. (b) Rehabilitation and/or construction of approximately 42.2 kilometers of embankments within the Project Sites and replacement or repair of mechanical equipment as necessary.

  (c) Construction of a drainage pumping station of approximately forty (40) cubic meters per second capacity within the DGWR Project Sites.

  Part 2. Technical assistance for project management, social safeguards and capacity building.

  (a) Supporting contracts management, engineering design reviews, construction supervision and technical assistance for implementing the Project, including the Resettlement Policy Framework, Resettlement Plan and the Grievance Redress System. (b) Improving institutional coordination for operation and maintenance of Jakarta’s flood management system, as well as establishing a Flood Management Information System.

  (c) Implementation of Resettlement Plans. (d) Establishment and operation of the Grievance Redress System.

  (e) Carrying out technical studies and analytical assessment to review the master plan on flood management in Cisadane – Jakarta – Bekasi area.

• – March 2017)

  Consultant Services, Goods and Non-Consulting Services under 10,100,000 6,800,000 100%

  40.6 31%

  17.8 14% DKI

  71.1 55% DGHS

Figure 1.1 Loan allocation among Executing Agencies

  Total 139,640,000 139,640,000

  (3) Incremental Operating Cost under Part 2(a) of the Project

  69,340,000 40,640,000 67% (2)

  17,800,000 17,800,000 80% (c) Works under Part 1 of the Project for the DKI Project Sites

  42,400,000 71,100,000 80% (b) Works under Part 1 of the Project for the DGHS Project Sites

  (1) Works under Part 1 of the Project (a) Works under Part 1 of the Project for the DGWR Project Sites

  Category Amount of the Loan Allocated (USD) Expenditures (%) to be financed (inclusive of Taxes) Original Amendment

• - 300,000 100% (4) Consultants Services, Goods and Non-Consulting Services under
• - 3,000,000 100%

  2 Loan Category becomes

  Korea Engineering Consultants Corp. in joint venture with PT. Puser Bumi Mekon,

  Construction Supervision Consultant for JUFMP/JEDI

  Quarterly Report No.13 (January

DGWR DGHS DKI

1.2 Project Location DGWR

  

Quarterly Report No.13 (January Construction Supervision Consultant for JUFMP/JEDI

• – March 2017)

  1.3 Background of the Project

Jakarta is the preeminent urban center of Indonesia. It is the main commercial hub of Indonesia. Regional

urbanization has contributed to making Jakarta one of the largest metropolitan areas in the world. The Special Capital

  2 District of Jakarta (DKI Jakarta)1 covers an area of approximately 650 km with a population of about 9.6 million in 2010,

  2

  2

  2

while the population of Greater Jakarta (covering about 7,300 km ) stood at 27.9 million . Rapid growth and inadequate

development of public services have contributed to a host of problems the most severe of which are manifested in

disastrous perennial flooding.

  

Flood management infrastructures in Jakarta. Greater Jakarta is surrounded by several dormant volcanoes whose

slopes form the upstream catchment areas of the 13 major rivers that flow through Jakarta to the Java Sea. The rainy

season begins in late November and ends in early April. Jakarta sits in the lowest lying areas of the basin. Forty percent

of Jakarta lies below sea level, including most of North Jakarta, which is being severely threatened by acute land

subsidence. The basic principle of flood management in Jakarta is to divert peak flows from upstream areas around the

core of the city, directing flows to the East and West of Jakarta via two major flood canals emptying into Jakarta Bay.

Within the city, the macro drainage system consists of 13 rivers and a large number of drainage channels. The macro

drainage system can be divided into several subsystems that are separated by floodgates. In low-lying areas, there are

polders, which are protective systems that utilize retention reservoirs at the lowest point and regulate excess water levels

by pumping out of the system. Poor condition of the system, under-implementation of operations and maintenance

(O&M), and inadequate local drainage management result in rapidly occurring inundations during rainfall conditions.

  

Causes of flood in Jakarta. The overall urbanization trends are central to the causes of Jakarta flooding. This has led

to the deterioration of several critical factors. The encroachment and/or development of critical catchment areas have

resulted in both increased rainwater runoff and lack of natural stormwater retention areas both within the city and in

upstream areas of the catchment. Increased generation and inadequate management of solid waste have contributed to

waste choked canals and floodways, exacerbated by insufficient maintenance resulting in weakening structures and

sediment build-up. Some canals are operating at less than a third of their original capacity. Land subsidence continues

at increasingly alarming rates, principally caused by intensive deep groundwater abstraction. Land subsidence results in

increased vulnerability to flooding due to the reduced gravitational capacity to channel storm flows to the sea and an

increased risk of tidal flooding.

  

Flood management institutions in Jakarta. Responsibility for the development and management of flood infrastructure

in Jakarta is shared between two central government agencies and the Provincial Government of DKI Jakarta (DKI) i.e.

  

The Balai Besar Wilayah Sungai Ciliwung - Cisadane (BBWSCC)3 under the Directorate General of Water Resource

(DGWR) of the Ministry of Public Works and Housing (MoPWH); the Directorate General of Human Settlements (DGCK)

of the MoPWH; and DKI, through its provincial public works office (DTA-DKI)4, is responsible for the remaining drains,

floodways and retention basins.

  1.4 Project Objectives

The Project Development Objective (PDO) of the Jakarta Urgent Flood Mitigation Project/Jakarta Emergency Dredging

Initiative (JUFMP/JEDI) is to contribute to the improvement of the operation and maintenance of priority sections of

Jakarta’s flood management system. The PDO will be achieved through:

  a) Dredging sections of selected key floodways, canals and retention basins to improve their flow capacities, and disposing the dredge material in proper facilities; b) Rehabilitating and constructing embankment in sections of, and repairing or replacing mechanical equipment in, the same selected key floodways, canals and retention basins to sustain and improve their operations; c) Establishing institutional coordination between the three responsible agencies to encourage coordinated

development, and operations and maintenance (O&M) of Jakarta's flood management system, and

  1 Jakarta is officially designated a province with special status as the capital of Indonesia i.e., DKI Jakarta (or ‘Special Capital City District of Jakarta’).

  2 More than double the population of 11.9 million in 1980.

  3 River basin management agency for the Ciliwung and Cisadane rivers, which is a Central Government institution designed to function as a river basin organization.

  

4 And further supported by its sub-dinases (or sub-departments at the municipal level). Administratively, DKI Jakarta is divided into five municipalities (i.e , North Jakarta,

.

  South Jakarta, West Jakarta, East Jakarta and Central Jakarta municipalities) and one regency (i.e., Kepulauan Seribu, a group of small islands located on the Java Sea).

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  3

  

Quarterly Report No.13 (January Construction Supervision Consultant for JUFMP/JEDI

• – March 2017)

d) Strengthening the capability of the responsible agencies to improve the operations, maintenance and management of Jakarta's flood management system.

1.5 Construction Packages

  

The ultimate goal is to improve Jakarta’s flood management system and reduce the time and duration of floods by

dredging selected floodways, channels and retention basins and to dispose of the excavated (or dredged) materials at

three managed facilities each being many kilometers from the proposed construction sites. As discussed in other

sections of this Inception Report, there are 13 (thirteen) rivers flowing northwards through Jakarta. These form its macro

drainage system. Overtime, poor operation and maintenance (O&M) and ineffective solid waste management, has

resulted in significant sediment deposition and solid waste build up. Additionally, uncontrolled (intentional) upstream land

development has resulted in both increased surface runoff and lack of natural storm water retention areas due to the

alteration of the surface (less forested areas, more houses and roads, etc.). Effects of climate change has also changed

the hydrology of the region resulting in intense and longer duration downpours at times and shifting of the timing of wet

and dry seasons.

This Project will focus on 11 (eleven) channels and 4 (four) retention basins which have been identified as priorities. The

major scope of works under the Project include the following: (i) dredging of floodways, channels, and retention basins

and disposing the excavated material at three separate disposal facilities; and (ii) rehabilitating and constructing

embankments and repairing or replacing mechanical equipment on various structures.

One management concern with respect to this Project will be the development of effective coordination and cooperation

of three separate government authorities. Under Indonesian law, the Ministry of Public Works and Housing Affair

(MoPWH), [through two departments - DGHS and DGWR], and the provincial government of Jakarta, DKI are

responsible for managing different aspects of Jakarta's flood control system. The MoPWH departments are responsible

for floodways that cross provincial boundaries; while the Jakarta Public Works Department (DPU-DKI) is responsible for

drains and retention basins within its boundaries. For this Project, these are the works that are under the three separate authorities: Under MoPWH-DGHS: (i) Tanjungan drain, (ii) Lower Angke drain, and (iii) Cideng-Thamrin drain;

Under MoPWH-DGWR: (i) Cengkareng floodway, (ii) West Banjir canal/floodway, (iii) Lower Sunter floodway; (iv) Upper

Sunter floodway, and (v) Sentiong Pump Station;

Under DPU-DKI: (i) Ciliwung-Gunung Sahari floodway, (ii) Sentiong-Sunter drain (including Ancol canal), (iii) Grogol-

Sekretaris drain, (iv) Pakin-Kali Besar-Jelakeng drain, (v) Krukut-Cideng drain; and (vi) Krukut Lama drain; and

Under DPU-DKI: (i) North Sunter retention basin, (ii) South Sunter retention basin, (iii) East Sunter III retention basin, and

  (iv) Melati retention basin.

  Table 1. 1 Budget Allocation for Component 1 by Executing Agency and Package Executing Budget Loan Allocation APBN/D Share Agency/Package (Loan+APBN/D) DTA - Jakarta 60,656,716 40,640,000 20,016,716 Package 1 21,519,400 14,417,000 7,101,402 Package 4 27,555,330 18,462,071 9,093,259 Package 7 11,581,986 7,759,931 3,822,055 DGWR 88,875,000 71,100,000 17,775,000 Package 2A 31,000,000 24,800,000 6,200,000 Package 2B 8,125,000 6,500,000 1,625,000 Package 6 13,875,000 11,100,000 2,775,000 Package 8 35,875,000 28,700,000 7,175,000 DGHS 22,250,000 17,800,000 4,450,000 Package 3 6,717,421 5,373,937 1,343,484 Package 5 15,532,579 12,426,063 3,106,516 Total 161,925,000 129,540,000 32,385,000

  Korea Engineering Consultants Corp. in joint venture with PT. Puser Bumi Mekon,

  4

  

Quarterly Report No.13 (January Construction Supervision Consultant for JUFMP/JEDI

• – March 2017)

Figure 1.2 Budget Allocation for Component 1 of JUFMP (in million USD) Total Budget Allocation = 161.9 (million USD) DKI

  60.7 35% DGHS DGWR

  22.3

  88.9 13% 52%

  DGWR (20%) + IBRD (80%) DGHS (20%) + IBRD (80%) DKI (33%) + IBRD (67%)

  Table 1. 2 Budget Allocation for Component 2 Items Total Loan IBRD APBD/N Sharing

  6,800,000 6,800,000 - Supervision Consultant

• Incremental Operating Cost under Part 2(a) of the Project 300,000 300,000
• Review the Master Plan on Flood Management in Cisadane-Jakarta-Bekasi area 3,000,000 3,000,000

  Total Component 2 10,100,000 - 10,100,000 Total Project Cost (Comp 1+2) 172,025,000 139,640,000 32,385,000

• ) Originally budget allocation of Supervision Consultant was 10,100,000 USD but 3,000 USD allocated for Review the master Plan on Flood Management in Cisadane-Jakarta-Bekasi Area under Pusair, Balitbang PUPR.

  Table 1. 3 Contract, Loan and APBN/D Sharing by Packages (in million IDR) Executing Agency/Package Contract Price Loan Portion APBN/D Sharing Prov Gov of DKI 836,758 560,628 276,130 Package 1 284,180 190,400 93,779 Package 4 315,384 211,308 104,077 Package 7 237,194 158,920 78,274

  DG Cipta Karya 258,074 206,459 51,615 Package 3 67,177 53,742 13,435 Package 5 190,897 152,717 39,951

  DG Water Resources 341,389 275,546 68,887 Package 2A 261,002 208,802 52,200 Package 2B 80,387 64,310 16,077

  T OTAL 1,436,221 1,040,199 396,023

1.5.1 Works of Construction Packages

  

Dredging and embankment rehabilitation of selected key floodways, canals and retention basins. This component will

support the dredging and rehabilitation of 11 floodways / canals and four retention basins which have been identified as

priority sections of the Jakarta flood management system in need of urgent rehabilitation and improvement in flow

capacities. The 11 floodways / canals are estimated to have a total length of 67.5 km, while the four retention basins

estimated to cover a total area of 65.1 hectares. The main project activities for the dredging and rehabilitation of selected

key floodways, canals and retention basins have been divided into eight works packages. The detailed description of the

selected key floodways, canals and retention basins are provided in Table 1.4 below.

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  5

  

Quarterly Report No.13 (January Construction Supervision Consultant for JUFMP/JEDI

• – March 2017)

  Table 1. 4 Floodways, Canals and Retention Basins of Construction Packages under the Project Description of Drains (Estimated) Contract

Location Coordinates

  Note 3 Works Location Note 4

(WGS 84)

Area

  Package Length (m) Width (m)

  2 (m or ha.)

  from 48M 702 674 m E, 931 7919 m S

  2 Ciliwung-Gunung Sahari Drain

  5,100 21.50 171,870 m

• – 45.90 to 48M 702 501 m E, 932 2469 m S

  1 (DKI)

  Waduk Melati

  48M 701 173m E, 931 4570 m S (2 ,004)(1,260) 4.90 ha from 48M 693 543 mE, 931 7587 m S

  2

  2A (DGWR) Cengkareng Floodway

  7,840 (540) 38.00 490,000 m

• – 87.00 to 48M 693 748 m E, 932 5466 m S from 48M 709 909 m E, 931 6807 m S

  Note 1

  2

  2B (DGWR) Lower Sunter Floodway

  9,980 20.20 338,320 m

• – 47.40 to 48M 711 015 m E, 932 4383 m S from 48M 701 462 m E, 931 5022 m S to 48M

  2 3 (DGHS) Cideng Thamrin Drain (Round Road Drain) 3,840 (1,960)

  10.00 55,680 m

• – 19.00 700 392 m E, 931 7488 m S from 48M 709 909 m E, 931 7153 m S

  2 Sentiong-Sunter Drain (including Ancol Canal) 5,950 (400)

  16.10 161,240 m

• – 31.20 to 48m 705 163 m E, 932 2503 m S Waduk Sunter Utara (Outlet drain) 48M 706 757 mE, 932 2450 m S (570) 33.00 ha.

  4 (DKI) 48M 706 552 m E, 932 0062 m S 19.20 ha.

• Waduk Sunter Selatan 48M 709 879 m E, 932 2542 mS 8.00 ha.
• Waduk Sunter Timur III from 48M 690 497 m E, 932 4161 m S to 48M

  600 9.20 10,560 m

  2 Tanjungan Drain

• – 26.00 691 024 m E, 932 4644 m S

  5 (DGHS)

  from 48M 695 478 mE, 931 8801 m S

  2`

  Lower Angke Drain 4,050 31.00 166,050 m

• – 51.00 to 48M 696 390m E, 932 2730 m S from 48M 696 390m E, 932 2730 m S

  2`

  West Banjir Canal (sea side) 3,060 (590) 33 .00 266,220 m

• – 41.00 to 48M 695 518 mE, 932 5394 m S

  6 (DGWR) Note 1

  15.00 131 ,320 m

  2 Upper Sunter Flood way from 48M 709 754 mE, 931 5,150

• – 36.00

  21.00 106,920 m

  2 Grogol - Sekretaris Drain from 48M 697 787 m E, 2,970

• – 51.00

  13.00 108,020 m

  2 Pakin- Kali Besar- Jelakeng from 48M 700 332 m E, 4,910

• – 31.00

  7 (DKI) Note 2

  2 Krukut Cideng Drain from 48M 700 392 m E, 3,250 15 .00 71,500 m

• – 29.00

  Note 2

  2 Krukut Lama Drain from 48M 701 053 mE, 3,490

  7.00 62,820 m

• – 29.00

  8 (DGWR) Sentiong Pumping Station

  48M 705 322 m E, 932 2657 m S

  2 2,140,520 m

• Total 67,514 65 ha.

  Note 1 For contracting purposes, the Sunter Floodway has been divided into two sub-packages- Upper Sunter Floodway and Lower Sunter Floodway. Note 2 For contracting purposes, the Krukut Drain has been divided into two sub-packages- Krukut Cideng Drain and Krukut Lama Drain. Note 3 Approximate length, width, area and coordinates may vary without an amendment to this Agreement provided that the variance is within and in accordance with the terms of a Works Contract for which the Bank has issued a no objection letter. Note 4 WGS 84 refers to World Geodetic System 84, a reference coordinate system.

1.5.2 Volume of Works

  

Surveys of the selected key floodways, canals and retention basins carried out during project preparation estimated the

  3

  3

total volume of dredge material to be dredged to be about 3.4 million m (of which about 95,000 m are estimated to be

solid waste). About 42.2 km of embankments are expected to be rehabilitated or constructed within these floodways,

canals and retention basins. Details are provided in Table 1.5 below.

  Korea Engineering Consultants Corp. in joint venture with PT. Puser Bumi Mekon,

  6

• – March 2017)

  9.1 - - 352.0 Jelakeng 16,293 1,875.0 312.3 - - 2,187.3

  Package 6

  West Banjir Canal - - - - - - Upper Sunter Floodway - - - - - -

  Package 7 152,793 7,290.3 2,557.6

  13.9 0.0 9,861.8

  Grogol Sekretaris Drain 99,374 588.5 1,993.9 - 0.0 2,582.4 Krukut Cideng Drain 22,479 2,214.3 132.6 13.9 0.0 2,360.8 Krukut Lama Drain 10,709 2,004.3

  92.4 - - 2,096.7 Kali Besar 1,986 265.3 17.3 - - 282.6 Pakin 1,952 342.9

  Total 2,792,862 43,977.9 7,866.5 1,589.7 346.0 53,780.1

  Tanjungan Drain 11,210 983.6 82.4 - - 1,066.0 Lower Angke Drain 418,790 1,344.0 65.6 216.5 - 1,626.1 Aladin - 976.5 47.0 - - 1,023.5 Anak Kali Angke - 387.0 81.5 - - 468.5 Kamal Drain - 568.6 -

  Dredging and disposal of dredged materials includes excavation, transportation, and disposal of all the sediment

  5 . The

specifications for dredging works under the project have been prepared to improve on and considering the lessons from

practices during project preparation period. The sediment to be dredged consists mainly of soft soils (silt and clay),

mixed with garbage and various solid waste

  6 .

  

The dredging takes into account the removal of under-water obstacles, such as rubble and piles from old structures or old

embankments, especially under bridges. Also, trunks and branches of trees could be found in the water. All sediment

from under the bridges and other obstacles including sediment on the embankment will be removed as well. All dredging

works will be executed from the water, except some temporary disposal and the truck loading works.

  

All equipment used for the removal (excavation) of the sediment must be able to position themselves in the water during

dredging operations with spuds. This is to guarantee that each section of the drains, floodways and waduks are dredged.

Damage of embankments, obstacles or any other assets before, during and after the dredging works will be repaired.

  5 The exact methodology and equipment for dredging will be proposed by the works contractor, subject to the approval of the Supervision Consultant. The bidding document specifies the minimum parameters to be adhered to by the contractor.

  6 Solid wastes larger than 30 cm x 30 cm will be separated from the dredge material and disposed of separately.

  51.4 - 620.0