PROVN OF SEWAGE TREATMENT PLANT (STP) ALONGWITH MANNING AND OPERATION FOR HOSPITAL AREA AT BENGDUBI UNDER GE PROJECT SILIGURI

Amount

Lump sum price worked out by the Contractor for “(SEWAGE LINE)” as listed in Schedule ‘A’ PART-I. Representing ** ___ % ______ percent *Above / Below the lump sum price of Rs. 25,70,778.00 inserted by the MES in Schedule ‘A’ PART-I.

Lump sum price worked out by the Contractor for “(EXCAVATION & EARTHWORK )” as listed in Schedule ‘A’ PART-II. Representing ** ___ % ______ percent *Above / Below the lump sum price of Rs. 2,36,946.15 inserted by the MES in Schedule ‘A’ PART-II.

Lump sum price worked out by the Contractor for “(EXTERNAL ELECTRIFICATION)” as listed in Schedule ‘A’ Part- III. Representing ** ___ % ______ percent *Above / Below the lump sum price of Rs. 6,93,496.56 inserted by the MES in Schedule ‘A’ Part-III.

Lump sum price worked out by the Contractor for “(EXTERNAL WATER SUPPLY)” as listed in Schedule ‘A’ Part- IV. Representing ** ___ % ______ percent *Above / Below the lump sum price of Rs. 1,94,920.60 inserted by the MES in Schedule ‘A’ PART-IV

Lump sum price worked out by the Contractor for “(ROAD AND PATH)” as listed in Schedule ‘A’ Part- V. Representing ** ___ % ______ percent *Above / Below the lump sum price of Rs. 3,68,343.94 inserted by the MES in Schedule ‘A’ PART-V

Lump sum price worked out by the Contractor for “(DRAIN)” as listed in Schedule ‘A’ Part-VI. Representing ** ___ % ______ percent *Above / Below the lump sum price of Rs. 96,213.70 inserted by the MES in Schedule ‘A’ PART-VI.

Lump sum price worked out by the Contractor for “(COMPOUND WALL / STEEL GATE)” as listed in Schedule ‘A’ Part- VII. Representing ** ___ % ______ percent *Above / Below the lump sum price of Rs. 4,20,178.06 inserted by the MES in Schedule ‘A’ PART-VII

SEWAGE TREATMENT PLANT, EFFLUENT TREATMENT PLANT AND OTHER MISCELLANEOUS ITEMS (Sch 'A' Part-VIII)

Design (hydraulically, structurally & aesthetically) of all individual tanks/Pumps/filters of Sewage Treatment Plant from equalization tank to Sludge drying Bed), Supply, installation, testing & commissioning of Sewage Treatment Plant based on principle of aerobic attached growth non clogging randomly Moving Bed Bio-reactor (MBBR) having capacity 330 KLD with all civil works for STP from approved OEM with Electrical Panels, AMF Panels, Control Panels, SCADA/PLC monitoring System as integrated part of the STP as per OEM as per approval of E-in-C’s branch including the followings to achieve the desired parameters :- Note : (i) Soft and Hard copies of design to be submitted for approval. (ii) Process flow diagram in 3D to be submitted by the contractor as per design calculations. A INLET PARAMETER (i) BOD < =200-250 mg/l (ii) COD < =350 mg/l (iii) TSS < 250-300 mg /l (iv) pH 6.5- 8.5 (v) Nitrogen (Total) 50 mg/l (vi) Phosphorus (Total) 7.0 mg/l (vii) Temperature Ambient Item continued as 8.02

(viii) Coliforms (Faecal) 10^5-10^6/100 ml (ix) Oil & Grease 20-30 mg/l (x) Chlorides & Sulphates As per water sample (xi) Heavy Metals Nil (xii) Colour and odour Actual (xiii) TDS As per water sample (xiv) Turbidity As per water sample (xv) Residual chlorine As per water sample (xvi) Odour As per water sample B OUTLET PARAMETER (i) BOD < 10mg/l (ii) COD As arising (iii) TSS < 10 mg /l (iv) pH 6.5- 8.3 (v) Nitrogen (Total) 10 mg/l (vi) Phosphorus (Total) 2.0 mg/l (vii) Temperature Ambient (viii) Coliforms (Faecal) Nil (ix) Oil & Grease 10 mg/l (x) Chlorides & Sulphates As arising (xi) Heavy Metals Nil (xii) Colour Colourless (xiii) TDS 2100 mg/l (xiv) Turbidity Less than 2 NTU (xv) Residual chlorine Greater than 1 PPM Item continued as 8.03

(xvi) Odour No foul odour (xvii) Total Kjeldhal Nitrogen - 10 mg/l (xviii) Nitrate Nitrogen as N - 10 mg/l (xix) Helminth Egg - <=1egg/l (xx) Acidity - As arising C. THE STP SHALL INCLUDE THE FOLLOWINGS :- 1. 01 No Oil & grease chamber in RCC construction with oil and grease. 2. 01 No Bar screen chamber in RCC construction.( depends upon design of the Plant) It may be Coarse Bar Screen and Fine Bar Screen. 3. 01 No Equalization Tank in RCC construction act as buffer, coarse bubble diffuser to be used. The diffusers should be retrievable. The tank includes the followings :- (i) 01 Lot of Air grid for equalization tank. Air Grid/ array of retrievable diffusers in equalization tank, aeration tank, settling tank as per design. (ii) 02 Nos Air blower ( 1 working + 1 Standby) based on air volume required per hour to deliver the required quantity of air to the equalization tank as well as other aeration tanks it serve. 4. 02 Nos Raw Sewage Lift Pumps (1 x Working + 1 x Standby) (Cap not less than 13.75 Cum per Hr( Pump Shall be operated for 20 Hrs per day) horizontal, Centrifugal, non-clog, Solids handing (NC-SH) Pumps with open impeller. Item Continued as 8.04

5. 02 Nos MBBR reactor tank in series in RCC construction with SS Air grid and MBBR media. The tanks in water proof RCC construction designed as water retaining structure. (Diffusers should be retrievable. Each pair of diffuser should be provided with a nylon rope to enable lifting out of the aeration tank for maintenance)(50- 60 Cum per Hr of Air for every Kg of BOD removed). Operating Platform should be provided next to tank, such that all the diffusers installed in the tanks are easily accessible. Headroom is required above the tank. 6. 01 No Tube settler tank with Tube Settler Assembly in RCC construction 7. 02 Nos Sludge recirculation Pumps/lifting Pumps to get desired MLSS ratio from Settling Tank to Aeration Tank. 8. BLANK 9. 02 Nos Filter Feed Pumps ( 20-22 Hrs of operation and the discharge head of the filters may be specified as 1.5 – 2 kg/Sq cm for NC-SH type of pump. 10. PSF(Pressure Sand Filter). Pressure vessel is designed to with stand a minimum pressure of 5 Kg/Sq cm. Necessary appurtenances at the top and manifold with lateral at the below to be provided for uniform distribution. Item Continued as 8.05

11. 01 No Activated carbon filter with media. 12. 01 No Chlorine contact cum filter feed tank RCC construction. 01 Set of Hypo Solution Dosing system including RCC Tank (size to be designed on the flow rate of the STP) with electrically monitored 02 Nos dosing Pumps. 13. 01 No Sludge Holding Tank in RCC construction with aeration and mixing. 14. 01 No Sludge dewatering Centrifuge. 15. 01 Set of DWPE dosing system with dozing pump & mixer Polymer solution preparation tank and dosing (for conditioning the sludge ) 16. Dosing Pump for Polymer solution and for conditioning the sludge. 17. 01 No Electrical control panel for STP operation. 18. Set of necessary Piping & valves as required for all I/C and O/G Pumps. 19. 01 Set of instrumentation comprising of pressure gauge , Level Control switch in all tanks , Air rotameter & Autodesluge valve as required. 20. 01 Set of cabling to interconnect STP panel with various drives 21. Necessary foundations for electro mechanical equipment’s 22. 01 No. Treated Water Tank in RCC construction.

Designing (hydraulically, structurally & aesthetically), providing, constructing, hydraulic testing, commissioning and giving satisfactory trials of ETP 25 KLD capacity consisting of screen chamber with Grit removal tank, equalization tank, air blowers, effluent transfer pumps, reaction tank, Flocculation tank with acid dosing, NaOH dosing, coagulant dosing, polymer dosing, primary clarifier, sedimentation tank, sludge holding tank, filter press appropriate size, foundation for all E/M equipment’s, Associated piping work with required valves, gates, drains, pathways, electrical control panel with interconnecting cable, spare parts for 2 years of operation, etc. complete as turnkey job with Electrical control panel with all involved civil, electrical, digital and mechanical works as per detailed specifications for civil, electrical and mechanical components with all duties and taxes complete with tertiary treatment with Filter Feed Pumps, oxidizer dosing, Activated Carbon Filter(ACF), Pressure Sand Filter(PSF), Treatment water Tank in RCC. Treated sewage can be used for irrigation, horticulture; fire fighting and MT wash complete with all Civil Works. A INLET PARAMETER (i) BOD < =500-600 mg/l (ii) COD < =1000-1100 mg/l (iii) TSS < 300-400 mg /l (iv) pH 5.5- 8.5 (v) Nitrogen (Total) As per water sample (vi) Phosphorus (Total) As per water sample Item continued as 8.07

(vii) Temperature As per water sample (viii) Coliforms (Faecal) As per water sample (ix) Oil & Grease 10-15 mg/l (x) Chlorides & Sulphates As per water sample (xi) Heavy Metals As per water sample (xii) Colour and odour As per water sample (xiii) TDS As per water sample (xiv) Turbidity As per water sample (xv) Residual chlorine As per water sample (xvi) Odour As per water sample B OUTLET PARAMETER (i) BOD < 10mg/l (ii) COD As arising (iii) TSS < 10 mg /l (iv) pH 6.5- 8.3 (v) Nitrogen (Total) 10 mg/l (vi) Phosphorus (Total) 2.0 mg/l (vii) Temperature Ambient (viii) Coliforms (Faecal) Nil (ix) Oil & Grease 10 mg/l (x) Chlorides & Sulphates As arising (xi) Heavy Metals Nil Item continued as 8.08

(xii) Colour and odour Colourless (xiii) TDS 2100 mg/l (xiv) Turbidity Less than 2 NTU (xv) Residual chlorine Greater than 1 PPM (xvi) Odour No foul odour C. THE ETP SHALL INCLUDE THE FOLLOWINGS :- 1. 01 No Oil & grease chamber in RCC construction with oil and grease. 2. 01 No Bar screen chamber in RCC construction.( depends upon design of the Plant) It may be Coarse Bar Screen and Fine Bar Screen. 3. 01 No Equalization Tank in RCC construction act as buffer, coarse bubble diffuser to be used. The diffusers should be retrievable. The tank includes the followings :- (i) 01 Lot of Air grid for equalization tank. Air Grid/ array of retrievable diffusers in equalization tank, aeration tank, settling tank as per design. (ii) 02 Nos Air blower ( 1 working + 1 Standby) based on air volume required per hour to deliver the required quantity of air to the equalization tank as well as other aeration tanks it serve. 4. 02 Nos Raw Sewage Lift Pumps (1 x Working + 1 x Standby) (Cap not less than 13.75 Cum per Hr( Pump Shall be operated for 20 Hrs per day) horizontal, Centrifugal, non-clog, Solids handing (NC-SH) Pumps with open impeller. Item Continued as 8.09

5. 02 Nos MBBR reactor tank in series in RCC construction with SS Air grid and MBBR media. The tanks in water proof RCC construction designed as water retaining structure. (Diffusers should be retrievable. Each pair of diffuser should be provided with a nylon rope to enable lifting out of the aeration tank for maintenance) (50- 60 Cum per Hr of Air for every Kg of BOD removed). Operating Platform should be provided next to tank, such that all the diffusers installed in the tanks are easily accessible. Headroom is required above the tank. 6. 01 No Tube settler tank with Tube Settler Assembly in RCC construction 7. 02 Nos Sludge recirculation Pumps/lifting Pumps to get desired MLSS ratio from Settling Tank to Aeration Tank. 8. BLANK 9. 02 Nos Filter Feed Pumps ( 20-22 Hrs of operation and the discharge head of the filters may be specified as 1.5 – 2 kg/Sq cm for NC-SH type of pump. 10. PSF(Pressure Sand Filter). Pressure vessel is designed to with stand a minimum pressure of 5 Kg/Sq cm. Necessary appurtenances at the top and manifold with lateral at the below to be provided for uniform distribution. Item Contined as 8.10

11. 01 No Activated carbon filter with media. 12. 01 No Chlorine contact cum filter feed tank RCC construction. 01 Set of Hypo Solution Dosing system including RCC Tank (size to be designed on the flow rate of the STP) with electrically monitored 02 Nos dosing Pumps. 13. 01 No Sludge Holding Tank in RCC construction with aeration and mixing. 14. 01 No Sludge dewatering Centrifuge. 15. 01 Set of DWPE dosing system with dozing pump & mixer Polymer solution preparation tank and dosing (for conditioning the sludge ) 16. Dosing Pump for Polymer solution and for conditioning the sludge. 17. 01 No Electrical control panel for STP operation. 18. Set of necessary Piping & valves as required for all I/C and O/G Pumps. 19. 01 Set of instrumentation comprising of pressure gauge , Level Control switch in all tanks , Air rotameter & Autodesluge valve as required. 20. 01 Set of cabling to interconnect STP panel with various drives 21. Necessary foundations for electro mechanical equipment’s . 22. 01 No. Treated Water Tank in RCC Construction. Note : (i) Soft and Hard copies of design to be submitted for approval. (ii) Process flow diagram in 3D to be submitted by the contractor as per design calculations. Item Contined as 8.11

Note for Item No 8.01 & 8.06 (STP & ETP) :- 1. A set of pipes, valves, by pass line, backwash water line etc are also provided to facilitate operation such as filtration, bypass (during servicing), backwash etc. Pressure gauges are to be provided at the inlet and outlet to monitor the pressure drop across the filter along with pressure gauge on all pumps.(I/P & O/P). 2. Water Meter at the outlet of the ACF to monitor the average daily qty of flow throughout of the STP. 3. (a) Working out Technical details of each components / capacity of ETP i.e. Bar Screen, diffusers, Pumps, blowers, ACF, PSF, Tanks, Electrical cables, Panels to be submitted along with design followed and 3D line diagram of STP in soft and hard copy. (b) All the booklets/papers referred for calculation and design including NFPA 70 & 13 are to be provided in soft and hard copies. (c) Some of the missing details of equipment if any deemed to be included in item which are required for smooth functioning of STP/ETP’s as per established norms of STP’s in India and as per Manual of sewerage and sewerage systems to achieve desired outlet parameters, easy working of operators manning the Plant.

Construction of Sump Well Cum Pump Houses (hydraullically, Structurally and aesthetically) and RCC sumps in M-30 design mix of required capacity including excavation in all types of strata, foundation concrete, container walls, bottom slab top RCC roof slab with CI manhole covers and with plaster and water proofing as per zonal specification including flooring, plastering, surface finishes as per Schedule of Finishes etc all as shown on drawings including epoxy paint inside, Refilling of earth and disposal of surplus earth within 50 mtr lead, including all piping connections, valves, internal electrification, MS ladder, Ventilation shaft, BB chambers with 5 mtr outer wall of tank complete including tests for water tightness and hydrullic functioning. Top room as per zonal specifications and all as specified and shown on drawings complete in all respect having inner diameter 4.50 mtr, invert level 3 mtr, overall depth 6.5 mtr complete.

Construction of Sump Well Cum Pump Houses (hydraullically, Structurally and aesthetically) and RCC sumps in M-30 design mix of required capacity including excavation in all types of strata, foundation concrete, container walls, bottom slab top RCC roof slab with CI manhole covers and with plaster and water proofing as per zonal specification including flooring, plastering, surface finishes as per Schedule of Finishes etc all as shown on drawings including epoxy paint inside, Refilling of earth and disposal of surplus earth within 50 mtr lead, including all piping connections, valves, internal electrification, MS ladder, Ventilation shaft, BB chambers with 5 mtr outer wall of tank complete including test for water tightness and hydrullic functioning. Top room as per zonal specifications and all as specified and shown on drawings complete in all respect having inner diameter 3.0mtr ,invert level 3 mtr , overall depth 6.5 mtr complete all as specified and shown on drawings.

Supply and installation of non clog submersible pump set with electric driven motor complete of capacity upto 5/5.5 HP, 415 Volts, 3 phase,50 Hz,2900 RPM, Head 9-18.5 Mtr, LPM1200 at 9 Mtr head and 400 at 18.5 Mtr head, delivery pipe size 100 mm complete all as specified and as directed. Make- Crompton Model- STPCS5.52 (3 PH) or Equivalent

M&L for construction of brick masonary valves pit of internal dimensions 1000mm x 1000 mm x 1000 mm complete and fabrication of 3.0 mm thick MS Sheet cover and angle iron frame made out of 40mm x 40mm x 6 mm MS angle iron and one side provided with hinge with locking arrangement & duly painted with two coats of black bituminous paint over a coat of red oxide primer including necessary earth work and PCC work complete all as specified and as directed.

S&F of flat submersible cable 3 core multi stranded copper conductor PVC insulated, water proof, ISI marked of size 6 sqmm for connecting from starter to bore well submersible pump sets complete all as specified and as directed. MAKE : Havells Cat No. WHPNDDSKG33X0 or equivalent model of KEI / Phinolex.

M&L for earth filling including transporting the approved earth from outside MoD land exceeding 1.5 Km but not exceeding 15 Km distance, spreading, leveling the filled earth in layers not exceeding 15 cm thick well ramming, watering complete all as specified and as directed.

S&F junction box made out of polycarbonate with IP 55/ IP 65 protection of size 126 x 228 x 111 mm including - 02 Nos cable terminal, 02 Nos polycarbonate cable gland , 01 Nos DIN rail and 01 No. MCB SP, 10 KA 6 Amps complete all as specified and as directed.

S&F of LED street light made up of pressure die cast housing with toughned glass and individual high power LEDs with secondary optics, IP66 protection and impact resistance of IK07 of capacity 120 W complete all as specified and as directed. MAKE : BAJAJ Cat no. BRTFG120WLEDI or equivalent model of Havells / Surya / Crompton Greaves.

Supply, Installation and commissioning CPRI type tested Factory made LT panel board cubical outdoor type , dust and vermin proof IP-54, pedestal type suitable for AC 415 V fabricated out of 3.15 mm thick CRCA sheet and supported by 50mmX50mmX6mm MS angle iron frame work including front and back hinged door shutter with locking arrangement including embedded in PCC (1:3:6), and suitable opening with cable gland for incoming and outgoings cables , prewired by approved quality copper wires and copper busbars proper ratings and cable lugs of suitable size, including two coats synthetic enamel paint over one coat red oxide primer to accommodate the following accessories complete all as specified and directed:- Item continued as 8.21

Panel ''A'' (a) Copper bus bar TPN 300 A for phase and neutral for main bus bar and incoming cable entry bus. (b) MCCB -200 Amp Current rating AC 415 Volts, 3 Phase 4 pole , 50 Hz with adjustable thermal magnetic release setting 80 % - 100 % and breaking capacity 35 KA -01 Nos ( As Incomer) (c) MCCB -100 Amp Current rating AC 415 Volts, 3 Phase 4 pole , 50 Hz with adjustable thermal magnetic release setting 80 % - 100 % and breaking capacity 25 KA -02 Nos ( As outgoing) (d) MCCB -63 Amp Current rating AC 415 Volts, 3 Phase 4 pole , 50 Hz with adjustable thermal magnetic release setting 80 % - 100 % and breaking capacity 25 KA -02Nos (As outgoing) (e) MCB -32 Amp Current rating AC 415 Volts, TPN , 50 Hz 10 KA 'C' Series -01 Nos (As outgoing) (f) MCB -20 Amp Current rating AC 220 Volts, SPN , 50 Hz 10 KA 'C' Series-01 Nos (As outgoing) (g) Street light timer suitable for 2 KW with contactor, timer with protection system (As outgoing) (h) Digital Voltmeter ,0-500 volt range 3 Phase, AC -01 set (j) Ammeter 0-250 A ,digital type AC 3 phase ,with CT's -01 set (k) LED type indicator lamp (Red, Yellow & Blue) complete 01 Set.

Supply, Installation and commissioning CPRI type tested Factory made LT panel board cubical outdoor type , dust and vermin proof pedestal type suitable for AC 500 V fabricated out of 3.15 mm thick CRCA sheet and supported by 50mmX50mmX6mm MS angle iron frame work including front and back hinged door shutter with locking arrangement including embedded in PCC (1:3:6), and suitable opening with cable gland for incoming and outgoing cables , prewired by approved quality copper wires and copper busbars proper ratings and cable lugs of suitable size, including two coats synthetic enamel paint over one coat red oxide primer to accommodate the following accessories complete all as specified and as directed:- Panel ''D'' (a) Copper bus bar TPN 150 A for phase and neutral for main bus bar and incoming cable entry bus. (b) MCCB -63 Amp Current rating AC 415 Volts, 3 Phase 4 pole , 50 Hz with adjustable thermal magnetic release setting 80 % - 100 % and breaking capacity 25 KA -01 Nos. (As incomer) (c) MCB 32 A- 415 V, 50Hz, 10 KA, 'C' Series,TPN -04 Nos. (As outgoing) (d) Star Delta Starter fully Automatic Suitable for 5/5.5 HP submersible pump 415 V,50 Hz. 04 Nos. (e) 3 phase digital Voltmeter -01 Nos. (f) 3 phase digital type ammeter 0-30 A with CTs -01 set (g) Single Phase Preventer - 04 Nos. (h) LED type indicator lamp (Red, Yellow & Blue)

Supply, Installation and commissioning CPRI type tested Factory made LT panel board cubical outdoor type , dust and vermin proof pedestal type suitable for AC 500 V fabricated out of 3.15 mm thick CRCA sheet and supported by 50mmX50mmX6mm MS angle iron frame work including front and back hinged door shutter with locking arrangement including embedded in PCC (1:3:6), and suitable opening with cable gland for incoming and outgoing cables , prewired by approved quality copper wires and copper busbars proper ratings and cable lugs of suitable size, including two coats synthetic enamel paint over one coat red oxide primer to accommodate the following accessories complete all as specified and as directed:- Panel ''E'' a) Copper bus bar TPN 150 A for phase and neutral for main bus bar and incoming cable entry bus. b) MCCB -63 Amp Current rating AC 415 Volts, 3 Phase 4 pole , 50 Hz with adjustable thermal magnetic release setting 80 % - 100 % and breaking capacity 25 KA -01 Nos. (As incomer) (c) MCB 32 A- 415 V ,50Hz ,TP -02 Nos. ( As outgoing) (d) Star Delta Starter fully Automatic Suitable for 5/5.5 HP submersible pump 415 V,50 Hz. 02 Nos. (e) 3 phase digital Voltmeter -01 Nos. (f) 3 phase digital type ammeter 0-30 A with CTs -01 Nos. (g) Single Phase Preventer - 02 Nos. (h) LED type indicator lamp (Red, Yellow & Blue)

M&L for construction of brick masonary valves pit of internal dimensions 600mm x 600 mm x 600 mm complete and fabrication of 3.0 mm thick MS Sheet cover and angle iron frame made out of 40mm x 40mm x 6 mm MS angle iron and one side provided with hinge with locking arrangement & duly painted with two coats of black bituminous paint over a coat of red oxide primer including necessary earth work and PCC work complete all as specified and as directed.

SUB TOTAL

MANNING, OPERATION AND MAINTENANCE OF SEWAGE TREATMENT PLANT (Sch 'A' PART-IX)

Outsourcing of maintenance and service operation of the Sewage Treatment Plant installed at Bengdubi of capacity 330 KLD - 01 No. and ETP 25 KLD - 01 No. including 4500 ltrs per day of waste from Operation Theatre, Laboratory etc and all associated connected accessories at Bengdubi Mil station to keep installation in functional condition in three shifts per day including Sunday and holidays (each shift 8 Hrs) by maintaining desired level of chemicals by dosing of required quantity of chemicals provided in the system, maintenance of log sheet and other periodical maintenance records complete all as specified and directed by the following manpower for a period of 11 x 3 = 33 months = 335 days x 3 Shifts/day x 3 = 3015 Shifts after completion of Phase-I mentioned in Schedule A Notes complete all as specified and directed. Manpower (i) One plant operator cum Attendent (semi-skilled). (ii) One Helper / Cleaner (un-skilled). The Maintenance and Operation mentioned above includes the following :- (i) Operation of raw sewage pump, air blowers, air compressors, centifugal pumps, chemical dosing system control panel etc. (ii) Removing of material arrested at bar screens. (iii) Removing of oil floating at surface. (iv) Change over from one pump to another as on requirement basis daily, to ensure smooth trouble free operationall as directed. (v) Change over from one blower to another blower as on requirement daily, to ensure smooth trouble free operation al as directed. Item continued as 9.02

(vi) Cleaning of air filter of blower regularly on requirement basis as directed (vii) Applying grease to all motors blowers periodically (viii) Draining of sludge from plant reactors once in a month as per requirement less time to avoid chocking of air grid. (ix) Removing of sludge from tube settler depending upon the actual load to ensure smooth operation all as directed. (x) Maintaining of log books for records of operation of plants including cost of stationary. (xi) Washing of tube media with low pressure jet of raw water as per requirement and as directed. (xii) Draining of burnout lubricant oil and refilling of appropriate lubricant oil in Air blower after 2000-2500 hrs of operation as per manufacturer guidelines all as directed. (xiii) Maintaining of log books for records of operation of plants including cost of stationary. (xiv) Anything missed out above but is required to be periodically done as per manufacturer guidelines shall be done by the operators all as directed for efficient operation of STP. (xv) Maintaining desired level of chemicals by dosing of required quantity of chemicals provided in the system. Material / Chemical required for STP / ETP in appropriate quantity i.e. Chlorine (any form) shall be issued under Sch 'B' free for fixing. (B) The quoted rates shall be deemed to include for the following :- a) Maintain and clean the internal and external area of plant. b) Maintain the safety and security measures of the plant. c) Keep the installation neat and tidy. Item continued as 9.03

d) After working hours any complaint lodged by the users shall be rectified immediately with confirmation to concerned JE/Engr-in-Charge. e) All tools, equipts and testing devices shall be provided by the contractor all as directed. f) Disposal of treated sewage/sludge as directed by the Engr-in-Charge. NOTE : 1. Material/chemical required for STP in appropriate quantity i.e chlorine (any form) shall be issued under sch "B" as free for fixing. (C) Efficient treatment of the sewage water shall be ensured by the contractor all as directed and required characteristics of outlet treated sewage and monitoring of recycled water quality after tertiary treatment shall be as under :- Ser Parameter Mandatory Water Monitoring No Quality Criteria (i) BOD5 10 mg/ l or less Weekly (ii) TSS < 10 mg/l Weekly (iii) DO 5 mg/l or more Weekly (iv) PH 6.5 - 8.5 Weekly (v) Coli form Nil Daily (Faecal) (vi) Heavy Metals Nil Continuous (vii) Res Chlorine > 1 Mg/l Continuous (viii) Other Parameter As per Sch’A’ Fortnightly Outlet Parameter Item Continued as 9.04

A Laboratory with Testing equipments to monitor the quality of water periodically should be established at the Plant site. For quick testing of ‘coli form count’ COLISCALEASY GEL method shall be used. (D) TESTING OF TREATED WATER :- The treated water shall be got tested by the tenderer once in a fortnight from PHED / Regional Govt. Lab /other Approved lab. Samples shall be collected in the presence of Engr-in-Charge and test reports shall be submitted to Engr-in-Charge in original for record purpose. If parameters of tested water are beyond the limits mentioned above or contractor failed to carryout the required test(s), the penal recovery at double the quoted rates of the contractor for the entire month shall be made from the contractor.

SUB TOTAL

Chauhan Associates

RYSA INFRATECH