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Lesson
Inadequate consideration of the project sites' topography and geological conditions in project feasibility studies and detailed engineering designs could lead to unexpected cost increases during implementation. There was a significant cost increase in land acquisition and resettlement due to changes in the project scope and additional land acquisition that needed to be undertaken because of the complex geological conditions in some sites resulting in increased civil works costs in some packages.

Project Number: 45509-002
Project Name: Chongqing Urban-Rural Infrastructure Development Demonstration II Project
Report Date:
Lesson
The dispersed location of project sites could make implementation management and supervision difficult. The sites of this project were spread in the north, east, and southwest of Chongqing, mostly in mountainous terrain, making management and supervision difficult for both the project management office and ADB.

Project Number: 45509-002
Project Name: Chongqing Urban-Rural Infrastructure Development Demonstration II Project
Report Date:
Lesson
Inadequate consideration of climatic constraints,working seasons in the project sites, difficult terrain, and availability of experienced local labor and construction materials can cause construction delays with implications on project implementation periods and costs .

Project Number: 37143-033
Project Name: North Eastern States Roads Investment Program - Project 2 and Multitranche Financing Facility
Report Date:
Lesson
The selection of subprojects and project timeliness need to consider the Implementation complexity (such as topography, adverse weather conditions at the construction site, and the need for specialized experts), experience of the executing agency, availability of specialist contractors, and available working seasons.

Project Number: 40648-013, 40648-037
Project Name: Infrastructure Development Investment Program for Tourism (Tranche 4 and Multitranche Financing Facility)
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Lesson
Thorough consideration of the local construction market and existing prices will contribute to more reliable project cost estimates.

Project Number: 43439-013, 43439-023, 43439-033
Project Name: Central Asia Regional Economic Cooperation Corridor 2 (Mangystau Oblast Sections) Investment Program (Multitranche Financing Facility and Tranche 2)
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Lesson
Including foreseeable variables in contingency allocations will reduce the risk of cost overruns.

Project Number: 39405-013
Project Name: Dhaka Water Supply Sector Development Program
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Lesson
For complex large projects with complicated geological conditions and a long implementation period, project costs—especially contingencies—should be estimated more carefully

Project Number: 35354-013
Project Name: Lanzhou-Chongqing Railway Development Project
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Lesson
Stakeholder consultations should be led by people who adequately understand community nuances.

Project Number: 49325-003
Project Name: Northern Province Sustainable Fisheries Development Project
Report Date: