PROPOSED FLOW REGULATION OF THE ORKHON RIVER AND CONSTRUCTION OF - - PowerPoint PPT Presentation

PROPOSED FLOW REGULATION OF THE ORKHON RIVER AND CONSTRUCTION OF RESERVOIR COMPLEX PROJECT

TERMS OF REFERENCE FOR REGIONAL ENVIRONMENTAL ASSESSMENT AND ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT Buryatiya, Russian Federation, March 20-31, 2017

CONTENT

• 1. BACKGROUND INFORMATION
• Project objective and rationale
• Project location
• Initial screening results
• Technical parameters
• Technical indicators of initial screening
• Coordination between FS and REA/ESIA
• Interfaces between FS ToR and ESIA ToR
• 2. DRAFT Terms of Reference
• Environmental and social impact assessment structure
• ESIA ToR: Key environmental issues
• ESIA ToR: Key social aspects
• Environmental management plan
• Expected outputs
• Requirements concerning consultants

PROJECT OBJECTIVE AND RATIONALE

Objective:

• To build a reservoir complex and regulate

flow of Orkhon river for the water supply

• f consumption centers in the Gobi region

Rationale:

Domestic water needs

• Existing groundwater sources are being depleted
• Growing demand in water in the region due to development

Orkhon project is reflected in policy documents:

• “National Security Concepts” adopted under July 15, 2010 Resolution of the Parliament No.48;
• Resolution of GoM #304 on adoption of Action Plan for the implementation of “Water” National

Program dated November 23, 2010 states: Item 3.2 of the Plan: In 2011-2015 development of FS shall be completed on priority basis for “Orkhon-Gobi” project, for improved water supply in high water demand regions.

Expected outcomes of the project:

• Through multi-year flow regulation of Orkhon river, will

achieve stable ecological flow regime without receding water levels even in driest periods

• Will achieve conservative use of limited ground water

resources in project covered regions, leading to assured water sources in the region

• Will create conditions for meeting increasing water

consumption in the region driven by expanding mineral production.

PROJECT LOCATION

DAM, RESERVOIR:

From Orkhon river headwaters - 440 km From dam to confluence Orkhon to Selenge – 709 km From dam to Mongolia-Russia border – 733 km From dam to Baikal lake -1142 km Source: The Baikal Basin Information center

SCENARIO “A” Demands are met with the region’s ground water resources SCENARIO “B” Demands are met with surface water resources of bigger Khangai region rivers

SCENARIO “C” Demands are met with both surface and groundwater resources

SCENARIO “D” Demands are met with groundwater resources in basins of bigger rivers SCENARIO “E” Demand is met with collected resources of rain, snow, runoff water

RESULTS OF INITIAL SCREENING

Identified scenarios for improvement of water supply in Southern Gobi Region

Scenario Description Projected water demand, м3/day From ground water resources, % From surface water resources, % Comment A Demands are met with the region’s ground water resources 174 060 100 Groundwater in only South Gobi region B Demands are met with surface water resources of bigger Khangai region rivers 386 800 15 85 C Demands are met with both surface and groundwater resources 386 800 45 55 D Demands are met with groundwater resources in basins

• f bigger rivers

386 800 100 55 % provided by diverter Khangai region waters Identified scenarios for improvement of water supply in Southern Gobi Region

RESULTS OF INITIAL SCREENING

• Hydrologic parameters Orkhon River:
• Catchment area (Orkhon post): 37 673 km2
• River length : 1149 km
• Multiyear average flow (Orkhon – Orkhon

(Bulgan) post: 41,6 m3/sec

• Average annual flowrate volumes: 1.3 km3 /year

(Orkhon – Sukhbaatar 3.92 km3 /year )

• Dam and reservoir parameters:
• Dam height: 66 m
• Barrage length: 360 m
• Reservoir total capacity/volume: 730 mln.m3
• Reservoir storage capacity: 580 mln.m3
• Estimated lowest capacity of reservoir: 150mln.m3
• Normal water levels:

1 173 m

• Boosted water levels:

1 175 m

• Reservoir area at forced discharge rates: 31km2
• Reservoir area at normal discharge rates: 28 km2

7

TECHNICAL PARAMETERS

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Estimated water usage rate is Q = 2.5 m3/сек. This is equal to 0.73 % of average flow of Selenge at Mongolian border. At border: Q=339 m3/сек;

TECHNICAL INDICATORS OF INITIAL SCREENING

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Source water supply: Groundwater resources of South Gobi + Surface water resources of Orkhon river:.

• Surface water: 213000 m3/day
• From existing aquifers:174000 m3/day
• Water diversion – Underground piping
• Length of main pipeline with spur lines

740 km

TECHNICAL INDICATORS OF INITIAL SCREENING

Orkhon Project proposal screening and Pre-feasibility studies (PFS) Orkhon Project preliminary Environmental and social studies (PESS) ToR finalized and specialists hired to per form assessment ToR finalized and specialists hired to per form assessment Further Regional Environmental Studies undertaken (REA) Review of REA and further Environmental and social impact assessment undertaken (ESIA) International Advisory committee reviews studies International Advisory committee reviews studies Environmental Management Plan Public consultation on draft REA and EISA REA, ESIA and EMP Finalized FS Finalized

FEASIBILITY STUDY

ЕNVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT

COORDINATION BETWEEN FS AND REA/ESIA STUDIES

Public consultations around draft Terms of Reference for EISA (ToR) International Advisory committee reviews studies Review of PFS and further Technical and Financial studies undertaken

Кey issues:

• 1. Hydrology / impacts on river flow (rates, volumes, distribution)
• 2. Dam safety, community health and safety, emergency preparedness and response
• 3. Environmental impacts
• 4. Social impacts

The ESIA will identify all environmental and social elements, issues, plans and other aspects to be used at detailed feasibility study stage The geographic scope of the ESIA will extend from the proposed project site(s) downstream along the course of River and include the assessment of impacts, and planning for mitigation measures, for the Russian section of Selenge River as well as Lake Baikal.

ENVIRONMENTAL AND SOCIAL IMPACTS ASSESSMENT STRUCTURE

• Impacts on riverine and aquatic ecosystems
• Impacts on fish population, species composition, migration
• Habitat formation, conversion, and loss
• Impacts on flow regime, volumes, distribution, including tributaries due to water

abstraction

• Impacts on microclimate; influence of weather and climate on severity of anticipated

impacts

• Impacts on landscapes, natural habitats, natural heritage sites
• Erosion, slope stability and induced seismicity in reservoir area and downstream river

systems; project in context of regional seismic risks

• Influence of climate change on project’s environmental performance

ESIA TOR: KEY ENVIRONMENTAL ISSUES

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Social aspects

Stakeholder analysis Public consultations

Project scenario assessment

Cumulative impact Local community resettlement program and rationale for its selection Places of tangible cultural heritage Resettlement analysis and documentation Local communities Grievance mechanism Implementation arrangements

ESIA TOR: KEY SOCIAL ASPECTS

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ENVIRONMENTAL MANAGEMENT PLAN

Environmental management plan Dam safety plan Monitoring plan Identification of stakeholder roles and participation/

• perational

involvement Plan for protection of archeological and cultural heritage Plan for protection of soil and plant coverage Reclamation planning Water biodiversity protection planning

EXPECTED OUTPUTS

REA report ESIA report Public consultation program report

REQUIREMENTS CONCERNING CONSULTANTS

KEY SPECIALISTS

INTERNATIONAL CONSULTANTS Person-month, experience, in years NATIONAL CONSULTANTS Person-month, experience, in years

Environmental and social assessment team leader

6 /≥15 Environmental and social assessment team deputy leader 8 /≥ 5 Senior environmental assessment specialist 3 /≥15 Hydrologist 2 /≥10 Senior social assessment specialist (land use, resettlement) 3 /≥10 Meteorologist 2/≥10 Ichtiologist 2 /≥10 Hydro-geologist 2/ ≥ 10 Water ecologist/ limnologist 2 /≥10 Engineer –geologist 3/≥10 Ecologist 4/≥10 Biologist 2.5 /≥10 Anthropologist 4.5/≥10 Archeologist 2.5/≥10 Plant specialist 2.5/≥10 Social economist 4/≥10 Land specialist 1/≥ 5 GIS specialist 3 /≥8 Ichthyologist 3/≥10 Soil specialist 3/≥10 Sociologist 2/≥10 Hydro-technical engineer 2/≥10 TOTAL 16 51