NO. THE STUDY ON RESTRUCTURING OF WATER SUPPLY SYSTEM OF TASHKENT CITY IN THE REPUBLIC OF UZBEKISTAN FINAL REPORT VOLUME 3 SUPPORTING REPORT MARCH 2006 Japan International Cooperation Agency Global Environment Department 環境 JR 06-020 JAPAN INTERNATIONAL COOPERATION AGENCY TASHKENT CITY MUNICIPALITY THE REGIONAL COMMUNAL SERVICE ASSOCIATIONS (TKEO) TASHKENT VODOKANAL (SUVSOZ) THE REPUBLIC OF UZBEKISTAN THE STUDY ON RESTRUCTURING OF WATER SUPPLY SYSTEM OF TASHKENT CITY IN THE REPUBLIC OF UZBEKISTAN VOLUME 3 FINAL REPORT SUPPORTING REPORT March 2006 ERNST & YOUNG SHINNIHON NJS CONSULTANTS CO., LTD. VOLUMES OF FINAL REPORT “THE STUDY ON RESTRUCTURING OF WATER SUPPLY SYSTEM OF TASHKENT CITY IN THE REPUBLIC OF UZBEKISTAN” Volume 1 SUMMARY REPORT Volume 2 MAIN REPORT Volume 3 SUPPORTING REPORT Volume 4 DATA REPORT The Study Report On Restructuring of Water Supply System Of Tashkent City in the Republic of Uzbekistan Final Report Supporting Report Long-Term Development Plan Chapter 1 Introduction (No additional Supporting Information) Chapter 2 Conditions of the Water Supply System 2.1 S2.1.1 Topography, Geology and Meteorology of Tashkent City and the Surrounding Area --------------------------------------------------------------- S2-1-1-1 S2.1.2 Water Source for Tashkent City------------------------------------------------ S2-1-2-1 2.3 S2.3.2 Relevant Laws and Regulations------------------------------------------------ S2-3-2-1 S2.3.4 Survey for Water Consumption of Domestic Customers in the City------ S2-3-4-1 S2.3.5 Water Analysis for Raw Water of WTP and Distribution Water ---------- S2-3-5-1 S2.3.6 Operation Status for Tashkent Water Supply System ---------------------- S2-3-6-1 S2.3.7 Tariff------------------------------------------------------------------------------- S2-3-7-1 S2.3.8 Financial Status------------------------------------------------------------------ S2-3-8-1 S2.3.9 Recent Changes in Institutions & Organization, Management and Financial Status Not Reflected in the Master Plan--------------------------- S2-3-9-1 Chapter 3 Current Issues of the Water Supply System 3.1 S3.1.2 Diagnosis Study of Facilities --------------------------------------------------- S3-1-2-1 S3.1.3 Evaluation of Groundwater Source of Kibray WTP ------------------------- S3-1-3-1 S3.1.4 Examination of Current Distribution Network ------------------------------ S3-1-4-1 Chapter 4 Planning Fundamentals for Development Plan 4.2 S4.2.1 Method of Water Demand Projection------------------------------------------ S4-2-1 S4.2.2 Water Demand Projection for Domestic Customers-------------------------- S4-2-1 S4.2.3 Water Demand Projection for Large Consumers----------------------------- S4-2-2 S4.2.4 Projection of Water Loss from Distribution Network------------------------ S4-2-5 S4.2.5 Projection of Total Water Demand----------------------------------------------- S4-2-7 S4.2.6 Estimation of Daily and Hourly Maximum Flow----------------------------- S4-2-8 Chapter 5 Long Term Development Plan 5.3 S5.3.4 Comparison between Existing and Proposed Distribution systems------------ S5-3-4-1 5.4 S5.4.5 Examination of Future Distribution Network ---------------------------------- S5-4-5-1 S5.4.7 Future Plan including Surrounding Area---------------------------------------- S5-4-7-1 Chapter 6 Evaluation of Long-Term Development Plan 6.2 S6.2 Financial and Economic Evaluation-------------------------------------------- S6-2-1 Chapter 7 Selection of Priority Projects (No additional Supporting Information) Feasibility Study Chapter 8 Preliminary Design for Priority Project 8.2 S8.2.5 Survey and Investigation for improvement of Booster PSs ---------------- S8-2-5-1 Chapter 9 O&M and Organizational Arrangement (No additional Supporting Information) Chapter 10 Project Costs and Implementation Plan (No additional Supporting Information) Chapter 11 Project Evaluation 11.1 S11.1 Financial Aspects--------------------------------------------------------------------- S11-1-1 Conclusion and Recommendation Chapter 12 Conclusion and Recommendations (No additional Supporting Information) Attachments A. Pilot Project A.1 A.1.1 Contents of Pilot Project------------------------------------------------------- A-1-1 A.1.2 Condition before Repair--------------------------------------------------------- A-1-2 A.1.3 Repair Works and Evaluation-------------------------------------------------- A-1-10 A.2 A.2.1 Introduction of the Tariff System using Bulk Meter for Apartment Building-------------------------------------------------------------------------- A-2-1 A.3 A.3.1 Public Relations and Awareness Activities---------------------------------- A-3-1 B. Questionnaires Survey B.1 Domestic Customer Awareness----------------------------------------------- B-1-1 B.1.1 Outline of the Survey----------------------------------------------------------- B-1-1 B.1.2 Summary of the Results-------------------------------------------------------- B-1-2 B.1.3 Results of the Survey----------------------------------------------------------- B-1-6 B-2 Officers/Staff Awareness------------------------------------------------------- B-2-1 B.2.1 Outline of the Survey----------------------------------------------------------- B-2-1 B.2.2 Summary of the Results-------------------------------------------------------- B-2-2 B.2.3 Results of the Survey----------------------------------------------------------- B-2-4 C. Drawings C.1 Kadirya WTP Layout Plan C.2 Kadirya WTP Hydraulic Profile C.3 Boz-su WTP Layout Plan C.4 Boz-su WTP Hydraulic Profile C.5 Kibray WTP Layout Plan C.6 South WTP Layout Plan C.7 Sergeli WTP Layout Plan C.8 Kara-su WTP Layout Plan C.9 Kuiluk WTP Layout Plan C.10 Bectemir Layout Plan C.11 Mirzo-Ulugbek PS Layout Plan C.12 Result of Hydraulic Simulation in 2002 (Actual Condition) C.13 Result of Hydraulic Simulation in 2002 (Improved Condition) C.14 Result of Hydraulic Simulation in 2011 C.15 Result of Hydraulic Simulation in 2015 Chapter 2 Conditions of the Water Supply System The Study on Restructuring of Water Supply System Volume 3. Supporting Report of Tashkent City in the Republic of Uzbekistan March 2006 S 2.1 Natural Conditions of the Chirchik River Basin S 2.1.1 Topography, Geology and Meteorology of Tashkent City and the Surrounding Area (1) Geomorphologic Characteristics of the Basin Charvak Dam is constructed in the Chirchik River Basin. This basin lies to the northeast from Tashkent City and extends to the southwest. The Talass Ridge of Tyan-Shan mountain system and its Karjantau Ridge are borders of the basin on the northwest. The basin is closed by Talass Ridge from the north,, and it extends from the southeast to the Chatkal Ridge. The basin is opened from the southwest, and the Sirdarya River serves as the border. From the orographic viewpoint, the basin is a quite complicated mountain system, and this defines drainage network and the system of its rivers runoff. The basin is divided into the range of the independent river basins by the Talass Ridge. The main spur of the Talass and Pskem Ridge divides the basin into two different parts: basins of the Chatkal and the Pskem Rivers. The Djettisandal Ridge sepa- rates the Sandalash River basin from the Chatkal River; the Chatkal and Kumbel Ridges make an orographic enclosure of the Ters River Basin, which is the left inflow of the Chatkal River Similarly two spurs of the Chatkal Ridge make closed basin of another left inflow of the Chat- kal and Akbulak River. The Pskem Ridge and its spur of the Keksuus Ridge create a Valley of the Koksu River, former the inflow of the Chatkal River, which now flows directly into Charvak Dam. The Koksu valley is opened to the southwest. The spur of Talass Ridge - Maydantal and Oygaing - create a closed basin of the Maydantal River, and the Talаss, Ugam and Karjantau Ridges enclose the Ugam River Basin, the left in- flow of the Chirchik River. Сhirchik River is formed by connected the Chatkal and Pskem Rivers. Charvak Dam is built in the junction, where some rivers and streams, such as Chatkal, Koksu, Pskem, Yangikurgan, Chimgansay, and others flow. The elevation grade of the Talass Ridge is over 3,500 m and some mountaintops exceed 4000 m. The highest point of the ridge is Manas Mountain (4,488 m). The height of the ridge spurs, stretching mainly toward southwest, such as Chatkal, Djettisandal and Pskem, also exceed 3,500 m, where there are some mountaintops with height of over 4,000 m. The height of the Ugam Ridge is lower than 3,500 m., except for some mountaintops. Because the height of ridges in this basin is not enough in order to form glaciers compared to the frozen border (3,300-4,000 m), freezing zoon is relatively small. According to the data is- sued by Shultz V.L. [ 1 ] in 1963 in the Chatkal and Pskem Rivers basin, 82 and 118 glaciers S-2-1-1-1 The Study on Restructuring of Water Supply System Volume 3. Supporting Report of Tashkent City in the Republic of Uzbekistan March 2006 with the total area of 44.2 and 153.9 km2 was observed. According to precise data of Schetin- nikov A.S. and Podkopaeva L.D. [ 3, 4 ] , there were 119 and 250 glaciers with the total freez- ing area of 51.0 and 127.8 km2 respectively in the basins of these rivers. Finally, according to the latest data of Schetinnikov A.S. [ 5 ] in Pskem basin, there were 251 glaciers with the total area of 121.2 km2. In the winter, seasonable snowfields are widely spread in the basin. The main flow of the basin, as aforementioned, is the Chirchik River, which discharges from Charvak Dam. Large two tributaries join