Design Build and Operate of Sewage Treatment Plants along with Cotreatment of used water and septage with 5 years of Operation and Maintenance in two towns Ranirbazar and Mohanpur of Tripura

Amount

Part A – Design Build Components Interception and Diversion works:Design, Supply and Construction of RCC Interception Chamber of size 2.00 x 1.50 x1.50 m size for the Major identified waste water (Grey/ Blackish water) conveying drains in core areas with the provision of overflow gate for diverting rainwater during rainy season and wastewater diversion in to the gravity system. Screen arrangement are to be made in the drain prior to the interception chamber. Proper benching arrangement shall be provided in the floor of interception chamber for easy flow of sewage from inlet position to outlet positions. The outlet shall be connected to the manhole/collection well by means of 300 mm dia. DWC/HDPE* pipe with proper grade for easy flow of waste water from the interception chamber to the manhole/collection well. The cost of measuring the flow, testing the characteristics of the used water shall be included in the cost. The incoming drains has to be repaired/reconstructed for a length of 5 m complete as per approved design, drawings, and specification and as directed by the Engineer in charge *For trenchless pipe laying ,where open cut is not possible. i) For RanirbazarTown

ii) For Mohanpur Town

Survey, Design, Supply, delivery, laying, jointing, and testing, commissioning, and trail run of gravity sewer main with proper slope to achieve self-cleaning velocity with necessary bedding arrangements as per CPHEEO Sewerage manual, design and construction of RCC/Brick Manholes of required sizes (Internal sizes depends on the depth of Invert level at each location of Manhole) at an interval of 50 m for cleaning purpose up to the final Interception point including supply of all materials and labour complete as per approved design, drawings and specification. The cost includes earth work in all type of soils, refilling and compaction including road restoration to the original position and removal of surplus earth, necessary barricading arrangement during construction for safety and dewatering arrangement etc. complete as per the approved drawing and specification and as directed by the Engineer in charge i) For RanirbazarTown A) 300 mm Double wall corrugated poly Ethylene/HDPE* pipe with sufficient grade, bedding and sufficient & suitable RCC/Brick work manholes for Gravity main I from out fall 2 to out fall 3 at 0 to 3.0 m depth. *For trenchless pipe laying ,where open cut is not possible

ii)For Mohanpur Town A) 300 mm Double wall corrugated poly Ethylene/HDPE* pipe with sufficient grade, bedding and sufficient & suitable RCC/Brick work manholes for gravity main 1 from outfall 1 to outfall 2 at 0 to 4.50 m depth. *For trenchless pipe laying ,where open cut is not possible

Survey, Design, Supply at site, laying, testing to the required pressure and commissioning and trail run of DI K9 Pumping mains with proper bedding arrangement. The cost includes the earth work excavation, refilling charges and removal of surplus earth, restoration of road, providing thrust block arrangement wherever necessary, Air valve, scour valve and sluice valves and valve pits, crossing of culverts etc., complete with barricading arrangements during construction and dewatering arrangements etc., complete as per approved design, drawings, and specification and as directed by the Engineer in charge. For RanirbazarTown a) Supplying, laying, jointing, testing and commissioning 125 mm diameter DI K9 pumping main with necessary accessories, valves, valve chambers for Pumping main I from outfall 1 to out fall 2

b) Supplying, laying, jointing, testing and commissioning 150 mm diameter DI K9 pumping main with necessary accessories, valves, valve chambers for Pumping main II from outfall 3 to STP

c) Supplying, laying, jointing, testing and commissioning 150 mm diameter DI K9 pumping main with necessary accessories, valves, valve chambers, Thrust block, culvert crossings etc.,for Pumping main from Treated Effluent Tank to the River

Survey, Design, Supply at site, laying, testing to the required pressure and commissioning and trail run of DI K9 Pumping mains with proper bedding arrangement. The cost includes the earth work excavation, refilling charges and removal of surplus earth, restoration of road, providing thrust block arrangement wherever necessary, Air valve, scour valve and sluice valves and valve pits, crossing of culverts etc., complete with barricading arrangements during construction and dewatering arrangements etc., complete as per approved design, drawings, and specification and as directed by the Engineer in charge. For Mohanpur Town a) Supplying, laying, jointing, testing and commissioning 200 mm diameter DI K9 pumping main with necessary accessories, valves, valve chambers for Pumping main I from outfall 2 to inlet chamber of STP

b) Supplying, laying, jointing, testing and commissioning 150 mm diameter DI K9 pumping main with necessary accessories, valves, valve chambers, Thrust block, culvert crossings etc.,for Pumping main from Treated Effluent Tank to the River

Design and construction of RCC collection well for required Dia. and depth for storing the wastewater In the I&D works with proper arrangement for erection of non-clog submersible pump sets. The Storage depth shall be below the invert level of the incoming sewer main/pumping main. The side wall shall be extended 1.50 m above the GL. Necessary girders with lifting arrangements are to be made to lift the pump set. Internal access ladders are to be provided including supply of all materials and labour complete. A dewatering pit shall be provided in the floor level to pump the waste water during maintenance period. Value chambers are to be provided for accommodating the sluice values. The cost includes soil testing for the assessment of soil bearing capacity and ground water table etc. The well shall be designed for the uplift pressure and external earth pressure as per IS 456. The cost includes earth work excavation in all type of soils, refilling sides, necessary barricading arrangement during construction, waterproof testing and removal of excess earth and disposing in a suitable location away from the site as per approved design, drawings and specification and as directed by the Engineer in charge For Ranirbazaar Town a) Collection well No 1 near outfall no. 1 for accommodating the flow of 0.29 MLD flow for Pumping station 1

b) Collection well No 2 near outfall no. 3 for accommodating the flow of 1.10 MLD flow for Pumping station 1

c) Collection well No 3 near Chlorine contact Tank of STP. for accommodating the treated effluent flow of 1.10 MLD flow

Design and construction of RCC collection well for required Dia. and depth for storing the wastewater In the I&D works with proper arrangement for erection of non-clog submersible pump sets. The Storage depth shall be below the invert level of the incoming sewer main/pumping main. The side wall shall be extended 1.50 m above the GL. Necessary girders with lifting arrangements are to be made to lift the pump set. Internal access ladders are to be provided including supply of all materials and labour complete. A dewatering pit shall be provided in the floor level to pump the waste water during maintenance period. Value chambers are to be provided for accommodating the sluice values. The cost includes soil testing for the assessment of soil bearing capacity and ground water table etc. The well shall be designed for the uplift pressure and external earth pressure as per IS 456. The cost includes earth work excavation in all type of soils, refilling sides, necessary barricading arrangement during construction, waterproof testing and removal of excess earth and disposing in a suitable location away from the site as per approved design, drawings and specification and as directed by the Engineer in charge For Mohanpur Town a) Collection well No 1 near outfall no. 2 for accommodating the flow of 1.10 MLD flow for Pumping station 1

b) Collection well No 2 near Chlorine contact Tank of STP. for accommodating the treated effluent flow of 1.10 MLD flow

Construction of RCC Pump Room for accommodating the Panel of Pumping station 1 of size 2 m x 2 m with proper foundation, columns, Brick work super structure, Cable trenches, RCC roof with weathering course on the top of the roof with weathering tiles including wiring for lighting arrangements Door, window and ventilators and white washing and colour washing etc. complete complete as per approved design, drawings, and specification and as directed by the Engineer in charge a) For Ranirbazaarr Town for Pumping station 1 and Pumping station 2

b)For Mohanpur Town for Pumping station 1

Design, Supply, Installation, Testing, and commissioning of the non-clog submersible pump sets having the required duty condition with adequate head to reach the next level i.e. Ridge manholes/next pumping station/inlet chamber of the STP at the collection well locations with panel board with all single phase preventor, sufficient capacitors, under voltage and over voltage relays etc., cables and required suction pipes, delivery pipes, sluice values, non-return valves, cables, cable trays and other mechanical appurtenant. The panel boards and other electrical fittings shall be mounted on the Pump room to operate the pump sets with proper earthling arrangement complete as per approved design, drawings, and specification and as directed by the Engineer in charge For Ranirbazaar a) 3 HP non clog submersible pumpset with duty condition of 30.2 cub.m/Hr x 15 m head (1W) at Collection well No. 1 with necessary Electrical panel, cables, etc

b) 2 HP non clog submersible pumpset with duty condition of 15.10 cub.m/Hr x 15 m head (2W) at collection well No. 1 with necessary Electrical panel, cables, etc

c)13 HP non clog submersible pumpset with duty condition of 113.55 cub.m/Hr x 16 m head (1W) with necessary Electrical panel, cables, etc at Collection well No 2

d)6 HP non clog submersible pumpset with duty condition of 56.8 cub.m/Hr x 16 m head (2W) with necessary Electrical panel, cables, etc at Collection well No 1

Design, Supply, Installation, Testing, and commissioning of the non-clog submersible pump sets having the required duty condition with adequate head to reach the next level i.e. Ridge manholes/next pumping station/inlet chamber of the STP at the collection well locations with panel board with all single phase preventor, sufficient capacitors, under voltage and over voltage relays etc., cables and required suction pipes, delivery pipes, sluice values, non-return valves, cables, cable trays and other mechanical appurtenant. The panel boards and other electrical fittings shall be mounted on the Pump room to operate the pump sets with proper earthling arrangement complete as per approved design, drawings, and specification and as directed by the Engineer in charge For Mohanpur a)14 HP non clog submersible pumpset with duty condition of 113.50 cub.m/Hr x 18 m head (1W) with necessary Electrical panel, cables, etc at Collection well No. 1

b)7 HP non clog submersible pumpset with duty condition of 56.80 cub.m/Hr x 18 m head (2W) with necessary Electrical panel, cables, etc at Collection well No. 1

Design, Supply, Installation, Testing, and commissioning of the submersible pump sets having required duty condition with adequate head to reach the water bodies/River/Drains from the effluent collection tank of STP with panel boards with all single phase preventor, sufficient capacitors, under voltage and over voltage relays etc,, cables and required suction pipes, delivery pipes, sluice values, non return valves,cables, cable trays and other mechanical appurtenant. The panel boards and other electrical fittings shall be mounted on the Panel romm of Admin building and the cables shall be laid with proper covering pipes from panel room to the effluent collection tank and separate switch gear arrangements are to be made on the top/side of the collection well to operate the pumpsets with proper earthing arrangement etc complete as per approved design, drawings, and specification and as directed by the Engineer in charge a) 1.5 HP submersible pumpset with duty condition of 22.8 cub.m/hr x 8 m head (1W+1S) at collection well No. 3 for effluent storage tank with necessary panel board, cables etc for Ranirbazaar

b) 1.50 HP submersible pumpset with duty condition of 22.80 cub.m/hr x 8 m head (1W+1S) with necessary panel board, cables etc for Mohanpur

Survey, Design and Construction , hydraulic testing, commissioning and giving satisfactory trials of sewage treatment STP with MBBR Technology for treating the used water and co treating the Septage collected from the town ., including preparation functional design, structural design and hydraulic design of the components and preparation of good for construction drawings and as built drawings after completion as per approval from appropriate authority etc. complete and as directed by engineer-in-charge including all Civil and Mechanical, electrical works of STP with the following components and all the units shall be interconnected with RCC walkways. The rate shall be inclusive of all the taxes and duties. 1. Septage collection tank , 2. Inlet chamber ,3. Screen Chamber , 4. Grit chamber , 5. Primary settling Tank , 6. MBBR 1, 7. MBBR 2, 8. Secondary settling Tank , 9. Chlorine contact Tank ,10. Mechanical Dewatering unit Building, 11. Sludge storage Tank , 12. Two story admin Building for Air Blower, Office, Laboratory, panel and store Room (plinth area of 15 m x 7 m), 13. Guard Room of size 2 m 2 m , 14. Internal roads, 15. Road side drains ,16. Boundary wall , 17. Transformer,Transformer yard , 18. Water supply arrangement, 19. Land development of STP site,20. Street light arrangement,21. All Electro Mechanical equipments,22. Laboratory equipment,23. Tools and plants& spares,24. Chlorination arrangement.,25. Online water quality monitoring system for measuring BOD, COD , TSS , pH and flow of the treated effluent 2 Nos (1W+1S), 26. Digital senor for measuring the Ammonium and Nitrate. 2 Nos (1W+1S), 27. 45 KVA invertor 1 No sludge carrying pipes, pumps, valves, pits, all Electro Mechnical equipment required for MBBR technology. all complete i/c civil, mechanical, electrical and instrumentation works, Electrical Sub-station, as per approved design, drawings and specification and as per the direction of Engineer in Charge. The Work shall be designed as per CPHEEO manual and as per the SBM – Urban 2.0 guidelines and executed as per approved design, drawings and specification and as per the direction of Engineer in Charge. The effluent shall meet the standards prescribed by the NGT and CPCB norms. The effluent shall have the following characteristics 1. BOD Not more than 10 mg/L, 2. COD not morre than 50 mg/L, 3. Total suspended solids Not more than 20 mg/L, 4. Faecal coliform less than 100, 5. Total Kjedahl Nitrogen not more than 10 mg/L, 6. Free Ammonia not more than 5 mg/L a)1.10 MLD Capacity at Ranirbazaar

b) 1.10 MLD Capacity at Mohanpur

Environmental Monitoring Plan . Platform of size 2.00 x 1.20m Supplying and providing platform of size 2.00 x 1.20m for trench crossing made up of MS Rectangular pipes as per IS 4923 : 1997 frame and top covered with MS sheet BG10 in thickness of 3.10mm for pedestrian crossing as directed by the Engineer-in-charge . 100mm x 50mm and 4mm thick MS Rectangular pipes minimum weight of 8.59kg/m

Platform of size 1.00 x 1.20 m Supplying and providing platform of size 1.00 x 1.2 m for trench crossing made up of MS Rectangular pipes as per IS 4923 : 1997 frame and top covered with MS sheet BG10 in thickness of 3.10mm for pedestrian crossing as directed by the Engineer-in-charge 100mm x 50mm and 4mm thick MS Rectangular pipes minimum weight of 8.59kg/m

Providing water sprinkling to minimize generation of dust during construction as and when required with a capacity of 6 KL/trip including cost of water etc as directed by the Engineer in charge

Conducting Quality test by collection of samples prior to start of work, during construction for each component site once in three months and after the construction activities are over for assessing the impact of Air quality, water quality and Nosie quality during construction and maintaining Environmental Monitoring and submitting the test report to the Engineer in charge and for taking corrective actions to maintain the quality of environment. a) Air Quality

b) Water Quality for testing the Bacteriological quality of the water

C) Noise Quality

Supply and delivery of Cesspool vehicles of capacity 1 KL as per the specification mentioned in the Technical specification. A) For Ranirbazaar Town

B) For Mohanpur Town

Operation and Maintenance O & M Fee for 5 year Operation Service Period for cleaning, operation and maintaining the all the components of new STP I& D work such as interception chambers, gravity mains, manholes, collection wells and erected submersibles pump set, panel boards, cables, pumping mains etc conforming to the relevant Service Levels including all necessary tasks, activities and obligations as necessary for operations, maintenance and management of waste water and sludge drying system and all related infrastructure comprising of Septage collection tank, inlet Chamber, screen chamber, Grit Chamber, Primary settling tank, MBBR Reactor 1 & 2 , Mechanical sludge dewatering unit with polymer dosing unit, Secondary settling tank, chlorination arrangement, chlorine contact tank, Administrative building, lab equipment, manure yard, repair, sludge collection and disposal management, all commercial services including collection of the ULB’s revenue, customer services including recording and redressing customer complaints, including all administrative tasks, management tasks and all services to be provided as a prudent etc., as well as cost of management, wages, incentives, operations, maintenance, spares, administration, equipment, transport, taxes and levies, including all necessary preventive and reactive maintenance of all civil, mechanical, electrical and instrumentation units, administration, transport, communications, management information systems, reporting, including cost of all wages, chemicals, electricity*, consumables, administration, transport, spares, insurance, taxes levies etc., complete but excluding statutory payments complete as per approved design, drawings, and specification and as directed by the Engineer in charge . The bidder shall separately provide the break-up of salaries and wages, consumables, electricity, preventive maintenance for civil, mechanical, electrical and instrumentation, insurance and all other costs in a separate sheet for analysis by Employer. The bidder shall separately provide the break-up of salaries and wages, consumables, electricity, preventive maintenance for civil, mechanical, electrical and instrumentation, insurance and all other costs in a separate sheet for analysis by Employer. FIXED CHARGE a) 1st year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

b) 2nd year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

c) 3rd year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

d) 4th year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

e) 5th year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

f)1st year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

g) 2nd year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

h) 3rd year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

I) 4th year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

J) 5th year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

Operation and Maintenance O & M Fee for 5 year Operation Service Period for cleaning, operation and maintaining the all the components of new STP I& D work such as interception chambers, gravity mains, manholes, collection wells and erected submersibles pump set, panel boards, cables, pumping mains etc conforming to the relevant Service Levels including all necessary tasks, activities and obligations as necessary for operations, maintenance and management of waste water and sludge drying system and all related infrastructure comprising of Septage collection tank, inlet Chamber, screen chamber, Grit Chamber, Primary settling tank, MBBR Reactor 1 & 2 , Mechanical sludge dewatering unit with polymer dosing unit, Secondary settling tank, chlorination arrangement, chlorine contact tank, Administrative building, lab equipment, manure yard, repair, sludge collection and disposal management, all commercial services including collection of the ULB’s revenue, customer services including recording and redressing customer complaints, including all administrative tasks, management tasks and all services to be provided as a prudent etc., as well as cost of management, wages, incentives, operations, maintenance, spares, administration, equipment, transport, taxes and levies, including all necessary preventive and reactive maintenance of all civil, mechanical, electrical and instrumentation units, administration, transport, communications, management information systems, reporting, including cost of all wages, chemicals, electricity*, consumables, administration, transport, spares, insurance, taxes levies etc., complete but excluding statutory payments complete as per approved design, drawings, and specification and as directed by the Engineer in charge . The bidder shall separately provide the break-up of salaries and wages, consumables, electricity, preventive maintenance for civil, mechanical, electrical and instrumentation, insurance and all other costs in a separate sheet for analysis by Employer. The bidder shall separately provide the break-up of salaries and wages, consumables, electricity, preventive maintenance for civil, mechanical, electrical and instrumentation, insurance and all other costs in a separate sheet for analysis by Employer. Variable cost a) 1st year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

b) 2nd year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

c) 3rd year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

d) 4th year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

e) 5th year for 1.10 MLD STP with I&D works and pumping stations for Ranirbazaar

f) 1st year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

g) 2nd year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

h) 3rd year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

I)4th year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

J) 5th year for 1.10 MLD STP with I&D works and pumping stations for Mohanpur

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