Bhabha Atomic Research Centre-BARC has published Tender For Modification Works Of Existing Sewage Treatment Plant (Stp) Inclusive Of Civil Mechanical Electrical Works And Operation And Maintenance For One Year At Barc Township Yelwal Mysuru. Submission Date for this Tender is 27-02-2024. Sewage Treatment Plant Tenders in mysuru Karnataka. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 22-Feb-2024 | ADDENDUM - 1 | Other | 27-02-2024 |
| Sl. No. | Item Description |
| 1 | General Notes a) Contractor is advised to visit the plant before quotaing the rates to understand the full scope of work. b) Police verification of all the workers engaged in the work is compulsory for making gate pass for entry into the township premises. c) Contractor shall provide all the necessary PPEs to the workers such as Gum boot, hand gloves, mask, hand held torch etc. d) Contractor shall make arrangements for onsite testing of pH, TDS and MLSS on daily basis. e) Contractor shall keep/maintain all the up to date relevant documents pertaing to STP operation such as Daily attendance of manpower, Laboratory test reports, material stock register. f) Contractor shall maintain Log book for machineries operations & daily test parametrs etc. as per the KSPCB guidelines. g) Contrator shall ensure that the KSPCB guidelines are strictly followed in the operations at plant as per the latest gudelines issued from time to time. h) The operator shall keep the entire STP premises neat and clean. i) All the items of substructure includes the cost of dewatering wherever neccesary during the progress of work, till its completion without any extra cost to the Department. Tenderers are advised to visit the site of work to acquaint themselves about the level of subsoil water, drainage facility for dewatering, accessibility to the site etc. and quote the rates accordingly. j) All the debris etc. shall be cleared from site and clearance for the same shall be obtained from safety section, BARC before claiming the final bill. k) For all the supplying and fixing items the rates shall be considered as inclusive of transportation charges. Payment terms & conditions: For part A (Item no. 1 to 37) a) 40% of quoted rate for Supply of Mechanical equipment with all the accessories and relevant documentation viz. tax invoice, Manufactuing test reports, warranty card etc. b) 20% of quoted rate for Installation, Commisioning and testing of individual equipment after compeleting its electrical and piping works to the satisfaction of the Engineer in Charge. c) 40% of quoted rate for Successful demonstration of the plant after conversion to SBR technology with acceptable parameters as per KSPCB guidelines of the treated sewage water analysis (Analysis report shall be obtained from independent approved laboratory). Payment terms & conditions: For part B (Item no. 1 to 37) 100% of quoted rate for the executed work. |
| 2 | Part A - Revamping/Conversion of STP1 (Item no. 1 to 37) The STP shall be designed to handle a minimum of 200 KLD capacity and maximum to an extent which available infrastructure can accommodate after conversion to the SBR technology and it should also be designed to cater the peak inflow of sewage during peak hours. This includes preparation of Design basis report for Sequential batch reactor (SBR) and the same shall be certified by Government affiliated institutions like NIE/IISC etc. where specialization in Environmental Engineering is available. The certified design shall be submitted to BARC for approval. The work also includes preparation of Standard Operating Procedure (SOP) and flow chart for the SBR type STP and Liaising with Karnataka State Pollution Control Board (KSPCB) for obtaining consent for the establishment (CFE) and operation (CFO) of SBR system etc. complete as per the instructions of Engineer in Complete Note: Contractor shall consider all the above jobs while quoting the rates. Also, the flow chart shall be displayed prominantly, at the STP premises. |
| 3 | Tank cleaning of: 1 nos. of Septic tank of approx. 100 cum capacity, 1 nos. of Collection tank of approx. 100 cum capacity, 3 nos. of Membrane Bio Reactor tank of approx. 30 cum capacity each, 1 nos. of chemical cleaning tank of approx. 30 cum capcity 1 nos. of Treated water tank of approx. 30 cum capacity and disposing of the sewage to designated place within the premises of BARC up to a lead of 5 km. The rate includes hire charges of the sewage cleaning tanker, required disinfectants like bleaching powder, arrangements of water jet and consumables like fuel for running the pumps etc. complete as per the instructions of Engineer in Complete. |
| 4 | Earthwork: Earth work excavation by mechanical means (Hydraulic excavator) / manual means in all types of soil other than soft and hard rock, dressing the sides of foundation, ramming of bottom etc. including shoring and dewatering (if necessary) and refilling with selected excavated earth in layers of not more than 500 mm thick, each layer well rammed and consolidated including disposing the surplus earth within a distance of 200 m all as per specifications including clearing Jungle, uprooting of vegetation, grass, etc. complete and as directed by the Engineer-in-charge (a) From 0.00 to 1.50 m depth from Average Ground Level |
| 5 | Extra over initial depth for every additional Depth of 1.50 m or part thereof in all kinds of soil |
| 6 | Earth work excavation by mechanical means (Hydraulic excavator) / manual means in foundation, in Soft Rock including shoring, dewatering if necessary, dressing the sides, ramming the bottom, refilling the sides etc. with available selected excavated earth in layers of not exceeding 500 mm in depth, each layer well rammed and consolidated disposal of surplus excavated material within a lead of 200 m complete as per specifications and as directed by the Engineer-in-charge. (a) From 0.00 to 1.50 m depth from Average Ground Level |
| 7 | Extra over initial depth for every additional depth of 1.50 m or part thereof in Soft rock |
| 8 | Providing and laying in position cement concrete of 1:3:6 (1 cement, 3 crushed sand, 6 graded stone aggregate of maximum size 20 mm) including consolidation, finishing, curing etc. complete as per specificationsand drawings but excluding the cost of Form work shuttering, centering Complete at all levels |
| 9 | Providing and laying in position cement concrete of 1:2:4 (1 cement, 2 crushed sand, 4 graded stone aggregate of nominal size 20 mm) including consolidation, finishing, curing etc. complete as per specification and drawings but excluding the cost of Formwork shuttering, centering and steel reinforcement at all Levels |
| 10 | REINFORCED CEMENT CONCRETE: Providing and laying in position Reinforced Cement Concrete(RCC) of grade M-30 using 20mm maximum size aggregates and crushed sand of approved quality including admixtures of approved brand and quality (plasticiser or super plasticiser) if required, including weigh batching, mechanical mixing, transporting, placing, vibrating, consolidation, finishing, curing etc. complete but excluding the cost of centering, shuttering and reinforcement complete as per specificationsup to Plinth Level. |
| 11 | Extra for RCC all grades in super structure up to 20.00 metre height |
| 12 | FORM WORK: Providing, centering, shuttering Form work using steel plates,timber planks for all types of structures including necessary strutting, proping, staging, supports, bracings etc. and deshuttering the same after the specified time all as per drawings, specifications and as directed by the Engineer-in-charge at all levels |
| 13 | For Sub Structure |
| 14 | For Super Structure |
| 15 | Providing Reinforcement Steel for reinforced cement concrete at all levels including supplying, preparation of bar bending schedules, cutting, bending, transporting, fixing, tieing in position with PVC coated G.I binding wire, all labour charges, cost of cover blocks in specified grade of concrete etc. complete as per specifications and drawings. Steel supplied by the contractor |
| 16 | Using TMT bars of specified grades all dia bars. TMT bars to be supplied by the contractor manufactured by other than SAIL, RINL or TATA and approved brands of BARC only |
| 17 | Provding and constructing brick work in Cement mortar using standard bricks of approved class/ quality, make or brand in foundation and plinth including curing, raking out joints, simultaneous pointing below plinth level if specified, complete as per drawings, specifications and as directed by the Engineer-incharge |
| 18 | Brick workin C.M 1:4 using crushed sand. |
| 19 | Plastering work: Providing 20 mm thick water proof plastering in cement mortar 1:4 (using crushed sand) finsihed smooth with a floating coat of neat cement including approved water proofing compound added @ 2% by weight of cement or as per manufacturer"s specifications, sieving of sand to required fineness, preparation of surface, scaffolding at all heights, curing all as per specifications, drawings and as directed by the Engineer-in-charge |
| 20 | Dismantling of RCC works including Cutting and stacking of steel reinforcement bars and disposal of unserviceable materials within 100 m lead as per direction of Engineer-in-charge |
| 21 | Providing Structural steel work using angles, channels, joists and other sections, welded and / or bolted in built up sections for trusses , structural steel floors, frame works, monorails and other structures including supplying, cutting, welding, fabricating, hoisting, fixing in position, applying a priming coat of approved steel primer etc. complete all as per specifications, drawings and as directed by theEngineer in charge |
| 22 | Up to and including 300 mm Joists, 350 mm channels, and below sections using materials of approved manufacturers. (ISI marked other than SAIL / RINL/ TATA) All test reports to be provided along with the supply of the materials |
| 23 | Providing Structural steel work in M.S Plain Plates and chequrred Plates for Embedded Parts, Trench Covers, Connection plates etc.including cutting, hoisting, fixing in position and applying a priming coat of approved zinc chromate steel primer etc.including cost of structural steel Plates, welding all labour charges etc. complete as per drawings and specifications. |
| 24 | Using materials of approved manufacturers. (other than SAIL/VIZAG/ TATA ) All test reports to be provided along with the supply of the materials |
| 25 | Providing and fixing precoated Galvalume Roofing profile sheets of approved size, shape and pitch up to and including single length of 12.00 met. The sheet shall be fixed using self drilling / self tapping screws of size (5.5 X 55 mm) with EPDM seal or with polymer coated J or L hooks, bolts and nuts 8 mm diameter with bitumen and G.I. limpet washers filled with white lead complete upto any pitch in horizontal / vertical or curved surfaces excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required as directed by the Engineer-incharge |
| 26 | Galvalume sheetroofing 0.50 mm Thickness in Single sheet |
| 27 | Providing and fixing GI chain link fabric fencing Made of GI wire of dia 4 mm of required width in mesh size 50 x 50 mm including strengthening with 2mm dia wire or nuts, bolts and washers as requeid complete as per direction of Engineer-in-charge. |
| 28 | Writing bilingual names and its capacity for each tanks and machinary with radium sticker of suitable colour in appropriate font size as directed by engineer in charge. |
| 29 | Supply, installation, testing and commisioning of 2 nos. of Raw sewage transfer pump (1 working + 1 stand by configuration) with a capacity of 30 m3/hr @ 15 mtrs head, Non-clog Submersible cutter pump with SS/CI construction suitable to handle up to 25 mm of particle size, pump construction should be detachable type for the maintenance purpose. The pump shall be submersible type, the rate quoted shall be inclusive of providing and fixing butterfly valves and pressure gauge in the delivery lines, dry run protection, industrial type electronic liquid controllers with stainless steel probes/ sensors or float switch for automatic operation with valve tee, fittings, cabling etc. including providing and fixing all necessary spares and consumables etc. complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. Type: Submersible, non-clog Type of fluid: Raw sewage, pH: 6.5 - 8.5, Seal: Mechanical seal, Power: According to above flow rate and head of the fluid, MOC of impeller/shaft: SS316, MOC of casing: CI, Enclosure class: IP68, Insulation class: Class "F", Make of pump: Kirloskar/CNP/KSB or equivalent, Make of Valves: Leader/Audco or equivalent |
| 30 | Supply, installation, testing and commisioning of 2 sets of filter feed pumps (1 working + 1 stand by configuration) with a capacity of 25 m3/hr and it shall generate sufficient head to give 25 m3/hr flow rate after overcoming the pressure drop due to 1 no. of Pressure sand filter, 1 no. of Activated carbon filter and the pipings. The pump shall be coupled to the adequate HP electrical motor, mounted on a common base frame, with Gland packing, providing and fixing foot valves in the suction lines, NRV and pressure guage in the delivery lines, including providing and fixing all necessary spares and consumables etc. complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. Type: Coupled set, Type of fluid: Semi-treated water (suitable to transfer clear water from STP aeration tank to pressure sand filter), Seal: Mechanical seal, Power: According to above flow rate and head of the fluid, MOC of impeller/shaft: SS316, MOC of casing: CI,Make of pump: Kirloskar/CNP/KSB or equivalent, Make of Valves: Leader/Audco or equivalent |
| 31 | Supply, installation, testing and commisioning of Centrifuge Machine: “AIR TECH” CENTRIFUGE MACHINE – 24” or equivalent with a capacity to handle sludge load of 50 Kg/Batch, Centrifuge Machine:-a)Outer Shell – 5mm thk. M.S.,b)Perforated Plate – 4- 4.5 mm thk. S.S.304, c)Main Shaft – En 8, d)Base Frame – M.S.Channel, e) Brg. Housing – Cast Iron,f)3 Nos. Legs – Cast Irong)Dome Nut – Forged M.S. with S.S.lining, h) Filter Bag – Multi P.P. Bag, i) Basket Size – 750mm Ø × 350mm Depth S.S. 304. j)RPM - 1100, Complete with Pulley & Electric Motor 5 HP 1440 RPM TEFC STD. “CROMPTON” Make. Basket duly statically and dynamically balanced. The complete Machine Painted with Gray Asian Paint etc. including providing and fixing all necessary spares and consumables etc. complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. Make – V V Enginer/Air-Tech or equivalent |
| 32 | Supply, installation, testing and commisioning of Sludge Pump-Centrifugal Screw Pump with a capacity of 10 m3/hr @ 15 mtrs head. the unit shall include starter panel as per manufacturer specifications including necessary acessories required for auto operation of the pumps etc., including providing and fixing all necessary spares and consumables etc. complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. Type: Coupled screw pump, Type of fluid: Sludge, Seal: Graphite impregnated glass yarn packing lubricated with mineral oil or equivalent, Power: According to above flow rate and head of the fluid, MOC of impeller/shaft: SS316, MOC of casing: CI, Make of pump: Kirloskar/CNP/KSB or equivalent |
| 33 | Servicing of existing twin lobe rotary Air blowers (Air cooled), replacement of Air Filter,Bearing and Rotary oil sealing Air Blower of adequate capacity Capacity: 154 cum/hr. Discharge pressure: 0.5 kg/sqm Power: 7.5 Hp including providing and fixing all necessary spares and consumables etc. completeincluding providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. Note: Contractor is advised to visit and inspect the machinery to understand the scope of work before quoting. |
| 34 | Servicing of existing Horizontal centrifugal (coupled) WAS pumps, replacement of wornout spares Capacity: 12.96 cum/hr. Head: 10 mtr. Power: 1 Hp including providing and fixing all necessary spares and consumables etc. complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. Note: Contractor is advised to visit and inspect the machinery to understand the scope of work before quoting. |
| 35 | Supply, installation, testing and commissioning coarse bubble tubular air diffusers for equalization tank ofwith 90mm dia X 810mm long necessary piping grid and supporting system including connection with the main air supply pipe with ball valves etc., MOC: EPDM including providing and fixing all necessary spares and consumables etc. complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. |
| 36 | Supply, installation, testing and commissioning non-buoyant fine bubble air diffusers for Aeration tank of with necessary piping and support grid of 300mm dia, disk type with EPDM membrane. The support frame retained by two hose clamps fitted to pipe lateral by PVC TEE and spectrum saddle arrangement in each SBR tank. MOC: EPDM including providing and fixing all necessary spares and consumables etc. complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. |
| 37 | Supply, installation, testing and commissioning of verticle type Pressure Sand Filter suitable for filtration of suspended impurities in semi treated water. The filter shall be suitable for 35.00Cu.m/hr flow rate and designed to remove suspended particles/impurity in semi treated water. The sand pressure filter vessel shall be fabricated out of MS plate not less than 5mm thick with dish ends out of 6mm thick plate or thickness as per ASME design whichever is higer and painted internally wih two coats of zinc chromate primer followed by two coats of anti-corrosive epoxy paint and externally with two coats of zinc chromate primer followed by two coats of epoxy paint of approved colour., with suitable MS frontal piping along with butterfly valves for the opeartion: Back wash duration - 15 minutes (approx.), Filtering Media - Sand/Pebbles. The Sand Pressure filter shall be fitted with top inlet distribution and bottom collecting system. Pressure gauge with needle valve shall be provided at inlet and outlet of Sand Pressure filter. Initial charge of underbed and sand media as required. Complete set of pressure gauge with needle valve and frontal piping with Butterfly valve system-inlet, outlet backwash and drain out point etc., complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification.Type: Vertical down flow, Media: Graded sand, Pressure drop minimum: 0.5 kg/cm2, Pressure drop maximum: 1.0 kg/cm2, Pressure rating Valves: 5 kg/cm2, MOC: MS with epoxy painting |
| 38 | Supply, installation, testing and commissioning of verticle type Activated Carbon Filter suitable for filtration of suspended impurities in semi treated water. The filter shall be suitable for 35.00Cu.m/hr flow rate and designed to remove suspended particles/impurity in semi treated water. The sand pressure filter vessel shall be fabricated out of MS plate not less than 5mm thick with dish ends out of 6mm thick plate or thickness as per ASME design whichever is higer and painted internally wih two coats of zinc chromate primer followed by two coats of anti-corrosive epoxy paint and externally with two coats of zinc chromate primer followed by two coats of epoxy paint of approved colour., with suitable MS frontal piping along with butterfly valves for the opeartion: Back wash duration - 15 minutes(approx.), Filtering Media - Activated carbon. The activated carbon filter shall be fitted with top inlet distribution and bottom collecting system. Pressure gauge with needle valve shall be provided at inlet and outlet of activated carbon filter. Initial charge of underbed and filter media as required. Complete set of pressure gauge with needle valve and frontal piping with Butterfly valve system-inlet, outlet backwash and drain out point etc., complete including providing and fixing all necessary spares and consumables etc. complete as per manufacturer"s specification. Type: Vertical down flow, Media: Activated carbon 450 Iodine, Pressure drop minimum: 0.5 kg/cm2, Pressure drop maximum: 1.0 kg/cm2, Pressure rating Valves: 5 kg/cm2, MOC: MS with epoxy painting |
| 39 | PLANT PIPING: Rerouting of Existing pipeline (Item no. 28, 29 & 30) Cutting, Removing and staking with a initial lead of 100 mtr. of existing SS/MS/GI Piping of various dia. including removing and dismounting all the connected fittings, flange etc. complete as directed by the Engineer in Charge. |
| 40 | Re-installation, testing and commissioning of existing MS/GI Piping of 40 to 50 mm dia. for handling the raw sewage and clear water including providing and fixing all necessary fittings, flange etc. spares, consumables and welding operations etc. complete as directed by the Engineer in Charge. |
| 41 | Re-installation, testing and commissioning MS/GIPiping of 75 to 90 mm dia. for handling the raw sewage and clear water including providing and fixing all necessary fittings, spares, consumables and welding operations etc. complete as directed by the Engineer in Charge. |
| 42 | PLANT PIPING: Supplying and fixing of New pipeline (Item no. 31 & 32) Supply, installation, testing and commissioning MS Piping of for handling the raw sewage and clear water including providing and fixing all necessary fittings, spares, consumables and welding operations etc. complete as directed by the Engineer in Charge. |
| 43 | 150mm dia MS Pipe |
| 44 | 150mm dia MS dummy Flange |
| 45 | 65mm dia MS Pipe |
| 46 | 65mm dia MS dummy Flange |
| 47 | 65mm dia MS Elbow |
| 48 | 40mm dia ball valve |
| 49 | 40mm dia flange |
| 50 | Providing and fixing UPVC Piping of 10 kg/cm2 pressure of Astral/Supreme/Jindal or equivalent make including all necessary fittings like elbows, tee, collar etc. complete as directed by Engineer in Charge. |
| 51 | 50mm dia Upvc Pipe |
| 52 | 50mm dia Upvc Elbow |
| 53 | 50mm dia Upvc Ball valve |
| 54 | 50mm dia Upvc Union |
| 55 | 50mm dia Upvc Collor |
| 56 | 50mm dia Upvc Flange |
| 57 | 50mm dia Upvc MTA |
| 58 | 50mm dia Upvc FTA |
| 59 | G.I clamp |
| 60 | Supply, installation, testing and commissioning electromagnetic flowmeter based on AC current supply for measuring the incoming raw sewage and outgoing treated water including providing and fixing all necessary spares and consumables etc. complete as directed by the Engineer in Charge. Size: 4 inch MOC: Sensor housing and flange - Carbon steel, Converter - Standard die cast aluminumand Electrode - Corrosion Resistance 316L Stainless Steel Process end connection: Inline Flanged (with matching flange) Graphic display: Monochrome LCD Range: 3 - 25 cum/hr Function: Real-time flow rate as well as totalized flow |
| 61 | Supply and laying in cable trenches/on MS Cable support structuresof 3C x 2.5 sq. mm PVC Insulated Armoured Copper Cable conforming to IS 1554-P1 including supply ofnecessary GI Clamps, screws, cable ties etc. |
| 62 | Supply and connection of 3C x 2.5 sq. mm PVC Insulated Copper Submersible Cable conforming to IS 1554-P1 including joining to the motor lead cable using water proofing tape |
| 63 | Termination and glanding of 3C x 2.5 sq. mm Copper Cables at PCC and motor ends including supply of cable glands, copper lugs etc. |
| 64 | Supply of Following Spare Components |
| 65 | Supply of MNX 25 L&T make contactor |
| 66 | Supply of MNX A-1 L&T Aux Contacts |
| 67 | Supply of OLR 14 - 23 A |
| 68 | Supply of C 25A 4P MCB |
| 69 | Supply of C 10A 3P MCB |
| 70 | Supply of C 32A 4P MCB |
| 71 | Part B - Commisioning and Performance testing (Item no. 38 to 41) Commisioning and Performance testing of Sewage Treatment Plant (STP) in BARC Township @ Yelwal, Mysuru with manpower deployment for three shifts under proper supervision. Maintianing all mechanical machinery and pumps like sewage transfer pumps, Screw pumps, dozing pumps, air blower and filter press in good working conditions both working and standby pumpsincluding replacement of minor spares such as belt, seal, oiling & greasing etc. complete as directed by the Engineer in Charge. Note: The contractor has to supply one operator in each shift and & one assistant in general shift and maintain Proper attendance register. Working prnciple of STP: Stage-1: Initially SMBR based STP shall be operated, Stage-2: Partial plant to be operated on SMBR basis and partial plant to be operated on SBR basis during transition period and Stage-3: After commisioning the SBRtechnology the plant shall be operated on SBR technology. Mode of Measurement: For operator and assistant one Job means working for 8 hrs. and a supervisor shall visit the plant twice in a month (preferably once in 15 days). Recovery: In case of absentees no payment shall be considered and additionally panelty also shall be recovered as detailed below: 1) For every absentees of operator as mentioned in sub-item no. 1, 2 and 3, Rs. 200 will be recovered as panelty from running/final bill. 2) For every absentees of Assistant as mentioned in sub-item no. 4, Rs. 150 will be recovered as panelty from running/final bill. 3) For a particular calender month: (i) In case of only one visit by Supervisor in the month a recovery of Rs. 900 will be made and (ii) In case of no vist by Supervisor a recovery of Rs. 1800 will be made. Emergency sitiuation: In case of any emergency sitiuation; operator, Assistant or Supervisor may have to do extra hrs. of work occasionally as directed by the Engineer in charge and no extra payment shall be made in lieu of this extra working hours. |
| 72 | Operator in 1st Shift for 8 hour. |
| 73 | Operator in 2nd Shift for 8 hour. |
| 74 | Operator in 3rd Shift for 8 hour. |
| 75 | Assistant in general Shift for 8 hour. |
| 76 | Supply and mixing liquid chlorine (10% Hypochlorite solution)to the treated water based on actual requirement etc completeas directed by the Engineer in Charge. |
| 77 | Operation of one no. of 40 KVA Diesel generator set with acoustic outdoor enclosure, with starting batteries and charging equipment (Air cooled, 4 cylinder, 4 stroke engine with mechanical governor, turbo charged engine coupled to self – excited brushless alternator. Make: Kirloskar Green India, Model – HA494TCG1, Year of manufacture: 2014. including supply of Diesel for DG Operation etc completeas directed by the Engineer in Charge. Note: The DG shall be operated whenever there is a power failure and it should also be operated on routine basis on weekly to keep it in working condition. |
| 78 | Treated sewage analysis once in a 15 days for PH, Suspended solids, Dissolved solids,Chloride as Cl, BOD, COD, Oil and Grease Turbidity, E coli etc completeas directed by the Engineer in Charge. |
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