Initial Environmental Examination Loan 2860 (SF) August 2015 ARM: Water Supply and Sanitation Sector Project – Additional Financing Improvement of Tavush Region Settlements Water Supply Systems Prepared by the Armenian Water and Sewerage Closed Joint Stock Company (AWSC) for the Asian Development Bank. The initial environmental examination is a document of the borrower. The views expressed herein do not necessarily represent those of ADB’s Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “terms of use” section of this website. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. FUNDED BY ASIAN DEVELOPMENT BANK WATER SUPPLY AND SANITATION SECTOR PROJECT - ADDITIONAL FINANCING Date of preparation 17/01/2014 Date of revision 31/08/2015 Subproject V IMPROVEMENT OF THE WATER SUPPLY SYSTEMS OF THE SETTLEMENTS OF TAVUSH REGION L2860-ICB-1-05 DILIJAN, NOYEMBERYAN, BERD TOWNS AND BAGRATASHEN, PTHGAVAN, ZORAKAN, BERDAVAN VILLAGES INITIAL ENVIRONMENTAL EXAMINATION Yerevan, August, 2015 HGSN LLC -JINJ Ltd Improvement of the water supply systems of the settlements of Tavush region FUNDED BY ASIAN DEVELOPMENT BANK WATER SUPPLY AND SANITATION SECTOR PROJECT - ADDITIONAL FINANCING Subproject V IMPROVEMENT OF THE WATER SUPPLY SYSTEMS OF THE SETTLEMENTS OF TAVUSH REGION L2860-ICB-1-05 DILIJAN, NOYEMBERYAN, BERD TOWNS AND BAGRATASHEN, PTHGAVAN, ZORAKAN, BERDAVAN VILLAGES INITIAL ENVIRONMENTAL EXAMINATION HGSN LLC, Director V. Hovasapyan Environmental expert K. Sahakyan Yerevan, August, 2015 Subproject V Initial Environmental Examination 2 HGSN LLC -JINJ Ltd Improvement of the water supply systems of the settlements of Tavush region TABLE OF CONTENTS 1. The Scope of Work ............................................................................................... 4 2. Description of the Existing Water Supply and Sewage Systems ................................. 5 2.1. Description of the water supply systems ........................................................................................... 5 2.2. Description of the sewage system ..................................................................................................... 7 3. Geographical Location and Climate of the Settlements ............................................ 8 4. Biodiversity and Specially Protected Areas ............................................................. 9 5. Initial Environmental Evaluation ......................................................................... 10 Appendix 1. Checklist for Quick Environmental Evaluation ....................................... 11 Appendix 2: Checklist for Preliminary Climate Risk Screening ................................... 14 Appendix 3. Schematic Map of the Subproject ........................................................... 15 Appendix 3.1. Spitakajur drainage system of Dilijan town .......................................... 16 Appendix 3.2. Bagratashen, Ptghavan and Zorakan villages ........................................ 17 Appendix 3.3. External water conduits* .................................................................... 18 ABBREVIATION LIST ADB Asian Development Bank EBRD European Bank for Reconstruction and Development WTP Water Treatment Plant DRR Daily Regulation Reservoir Subproject V Initial Environmental Examination 3 HGSN LLC -JINJ Ltd Improvement of the water supply systems of the settlements of Tavush region 1. The Scope of Work The aim of this subcomponent is the improvement of drinking water supply systems of Dilijan, Noyemberyan, Berd towns and Bagratashen, Ptghavan, Zorakan, Berdavan villages in Tavush region, RA within the framework of the project. Priority is given to the improvement of the water supply systems of the settlements. The works carried out for this purpose involve the following: Noyemberyan and Berd towns . Reconstruction of external pipeline with de200-de300 steel pipes, L=5300m, . Construction of polyethylene waterlines with de50-de200 polyethylene waterlines, L=35045m length in total, . Construction of water metering units of 2120 consumers in total and entry lines of private houses with de20-32 polyethylene pipes, . Construction of 28 valve chambers in total, . Construction of 62 buried valve junctions in total, . Repairing of Daily Regulation Reservoirs (DRRs) with capacities of 250 m3 and 500m3, construction of chlorination plant. Dilijan town (Takhta neighborhood) . Reconstruction of drainage pipes with a total length of L=600.0 m of Spitakajur river drainage system by laying de 225-de 315 diameter polyethylene pipes (250m of which is performed with de 315 diameter pipes), Bagratashen village . Construction of external waterline with DN150 diameter steel pipes, L=580.0 m total length, . Reconstruction of the existing V=400m3 DRR, . Reconstruction/construction of polyethylene pipes of L=8450.0 m total length, de40-de200 diameter, . Replacement of entry lines of 651 private houses, set-up of water metering chambers, . Construction/reconstruction of hydrant chambers (2 pieces), valve (7 pieces) and buried valve (3 pieces) junctions. Ptghavan village . Construction of external conduit of L=475.0 m total length with DN150 diameter steel pipes, . Reconstruction of the existing V=160m3 DRR, . Reconstruction and construction of polyethylene pipes of L=5550.0 m total length, de50- de160 diameter, . Replacement of entry lines of 187 private houses, set-up of water metering chambers, . Construction and reconstruction of hydrant chamber (1 piece) and valve junctions (4 pieces). Zorakan village . Construction of external waterline of L=1070.0 m total length with de110 diameter polyethylene pipes, . Construction of valve junction (1 piece), Subproject V Initial Environmental Examination 4 HGSN LLC -JINJ Ltd Improvement of the water supply systems of the settlements of Tavush region . Construction of pump station. Berdavan village . Repairing of DRRs with capacities of 120m3 and 160m3, . Construction of de50-de90 polyethylene waterlines in the distribution network, 3980,0 m approximate total length, . Construction of entry lines of 430 private houses, installing water metering chambers. Construction of hydrant chamber (2 piece) valve chambers (6 pieces) and buried valve junctions (1 pieces), Population number of Dilijan, Noyemberyan and Berd towns as of 01.01.2014 is 28430. Population of Dilijan is 14300 people, population of Noyemberyan is 5630 people and that of Berd is 8500 people. Population of rural communities within the project is 8480 people1. Population in Bagratashen is 2859 people, population in Ptghavan is 1115 people, population in Zorakan is 1041 people and that of Berdavan is 3465. According to the data published by the "Demographic Handbook of Armenia, 2012", the population growth is 0.43%. Due to the project implementation the consumers of the settlements covered by the project are to be provided with drinking water quality and stable water supply. 2. Description of the Existing Water Supply and Sewage Systems 2.1. Description of the water supply systems Water supply systems of 3 towns (Dilijan, Noyemberyan, Berd) and 1 village (Berdavan) are served by AWS CJSC, and the systems of Bagratashen, Ptghavan and Zorakan villages are served by local self-government bodies. Water supply system of Dilijan town operates mainly through structures of 1 catchment and 1 river water intake from Aghstev River. Water intake from the river is also treated in 3 treatment plants. - “Golovino” treatment plant-with a capacity of 55 l/sec is situated in the southern higher part of the town and was constructed in 1962. In 2010 World Bank financed its repairing. From here the water is accumulated in the DRRs of “Golovino” (V=1000m3) and “Takhta” (V=1000m3), afterwards it is transmitted to the distribution network. - “Frolovo” treatment plant–with a capacity of 90 l/sec and constructed in 1989. In 2010 World Bank financed its repairing. From here water is accumulated in “Kaghni Khach” (V=2x500m3) DRRs, afterwards it is transmitted to the distribution network. - “Bldan” treatment plant - with a capacity of 50 l/sec, constructed in 1971. From here the water is accumulated in “Kalinin” (V=1000m3) DRR, afterwards it is transmitted to the distribution network. - “Jilu Tala” catchment structure (constructed in 1988), from where water is transmitted to the distribution network of the town through 75-100mm steel pipes. - “Shamakhyan” river water intake constructed in 1962. 1 Demographic Database: http://www.armstat.am Subproject V Initial Environmental Examination 5 HGSN LLC -JINJ Ltd Improvement of the water supply systems of the settlements of Tavush region The water supply system of the town is constructed in 1960s. Despite of the works implemented in recent years the significant part of the pipelines is still in technically bad condition. There are often breakdowns, which result in great leakages. Major part of valve chambers is in failure state. Water supply of Noyemberyan town is provided from “Berdavan” deep wells by a mechanical method and “Gij Sar”, “Vararaghbyur”, “Spitakashen”, “Srotsahank” springs by gravity. The water taken from “Gij Sar” springs is transmitted to the DRRs through pipeline with a diameter of Փ150-250mm and approximate length of 56km. The DRRs have a