TOKYO ENGINEERING CONSULTANTS, Co., Ltd. PROJECT DATASHEET Detailed Design of the Primary Sedimentation Facilities of Hanami River No. 2 Sewage Treatment Plant (JAPAN) Assignment Name: Detailed Design of the Primary Country: Sedimentation Facilities of Hanami River No. 2 Sewage Japan Treatment Plant (DD) Location Within Country: Professional Staff Provided by Imba-numa basin in Chiba Prefecture Your Firm/entity (profiles): Name of Employer: No. of Staff: Chiba Prefectural Government 9 Address: No. of Staff-Months: 24-1, Isobe 8-chome, Mihama-ku, Chiba City, Chiba 30 261-0012 TEL: +81-43-279-1231 FAX: +81-43-279-1888 Duration of assignment: 4 months Start Date: Completion Date: Approx. Value of Services (Month/Year): (Month/Year): (in Current US$): December, 1998 March, 1999 $581,510 Name of Associated Consultants, if any: No. of Months of Professional Staff Provided by Associated Consultants: Name of Senior Staff (Project Director/Coordinator, Team Leader) involved and Functions performed: Mr. Kaoru KARIYA Team Leader Mr. Kunimasa IZUMI Civil Works Design (Treatment Facilities) Mr. Tadao FUNAMOTO Civil Works Design (Foundation Works) Mr. Takayuki KANEMORI Civil Works Design (Structural Analysis) Mr. Yshiaki MISAWA Mechanical Works (Machinery/Pipes) Mr. Haruki TOHDA Mechanical Works (Machinery/Procurement) Mr. Masami AZEGAMI (Machinery/Equipment) Mr. Yoshiaki HOJYO Electrical Works Mr. Tutomu OHNO Architectural Works Narrative Description of Project: The project was implemented for reducing the water pollution of Hanami River and improving the environment of the area of Imba-numa basin. The total capacity of plant is 662,400m3/d and the plant area is about 230,000m2. The wastewater is treated using Activated Sludge Process. The project includes civil works and electrical, mechanical, auto-control system engineering of following components: inlet screen, grit chamber, pumps, and primary settling tanks. In this project, the depth of inlet pipe is more than 40 meters below the ground and was constructed using Shield tunneling method (rotating cutter head on a cylindrical shield machine cuts a tunnel, and concrete segments are put on the inner tunnel). To receive the wastewater flow from the inlet pipe and convey to treatment plant, the pumps of vertical shaft volute type was adopted for design. Description of Actual Services Provided by TEC Experts: According to the project requirement, the Design Team made detail design calculation and drawings for construction works. In the implementation phase of the project, the staff carried out quality design of following items especially in terms of construction workability and efficient and sustainable operation and maintenance. TOKYO ENGINEERING CONSULTANTS, Co., Ltd. PROJECT DATASHEET 1. Optimum type of wastewater pumps a) Earth and Foundation construction works b) Hydraulic structure constructions works c) Installation and test operation of equipment d) Installation and test operation of instrumentation facility 2. Cost performance of construction works and operation and maintenance a) Civil works b) Mechanical works c) Electrical works d) Architectural works .