CLEANING AND MAINTENANCE OF UNDER GROUND SUMPS, OHT, DUG WELLS, FILTER BEDS, FLUCATORS WITH CONNECTED ITEMS AT GE NAGROTA.

Amount

Cleaning of semi underground clarifloculators size 10 m dia and 3 m (internal dimensions) by removal of mud/wet silt from inside tank depth of mud 0.5 to 1.0 m from floor level and removal of mud/liquid silt to a distance n exc. 50 mtr and cleaning of tank by scrubing the silt & scale from floor and walls and washing out tank with alum mixed water finally with clear water untill the clear water is not obtained complete all as specified and directed.

M&L for Diversion of course of river (Tawi River) in to the intake channel of the suction side of the raw water pumps installed at Long Term Water Supply Pump House so that the intake channel get sufficient raw water for pumping to the sedimentation bed by using POK Land excavators complete all as specified and directed. (Note: (i) T&P required such as excavators shall be provided by the contractor and rate for the same be included in the quoted rates. (ii) Men Power required for making channels near intake shall be provided by the contractor. (iii) Sand bag required for making channels as per site requiredment shall be provided by the contractor and rate for the same shall be included in the tender)

Dewatering of Dug well of size 13.5 mtr depth and 6 mtr dia by pumping out water with pump set and removing mud, sand depositing out side the Dug well 50 mtr away and cleaning the Dug well thoroughly inside & bottom by using wire brush and removing all the sticky participles including making a rectangle strip of adequate size with black paint on the out side surface of the Dug well and writing date of cleaning with white paint over the strip complete all as directed by Engr-In-Charge. Note:- Suitable size opening by cutting the side brick wall of Dug well shall be made for removing mud and sludge from Dug well and the same shall be made good after completion of work. The rate shall be deemed to include in the quoted rate.

Dewatering of semi UG sump of capacity 3.0 Lakhs Gallon by pumping out water with pumping set and removing mud, sand, gravel etc from semi UG sump manually and depositing out side the semi UG sump 50 Mtr away and cleaning the semi UG sump thoroughly inside & bottom by using wire brush and removing all the sticky particles including making a rectangle strip of adequate size with black paint on the out side surface of the semi UG sump and writing date of cleaning with white paint over the strip complete all as directed by Engr-In-Charge.

Dewatering of semi UG sump of capacity 1.5 Lakhs Gallon by pumping out water with pumping set and removing mud, sand, gravel etc from semi UG sump manually and depositing out side the semi UG sump 50 Mtr away and cleaning the semi UG sump thoroughly inside & bottom by using wire brush and removing all the sticky particles including making a rectangle strip of adequate size with black paint on the out side surface of the semi UG sump and writing date of cleaning with white paint over the strip complete all as directed by Engr-In-Charge.

All as per item No.5 above but of size 0.50 Lakhs Glln.

Dewatering of over head tank of capacity 01 Lakhs Gallon up to a height of 70 feet by drain out through washout valve and removing mud, sand, gravel etc from the over head tank manually and depositing out side the over head tank 50 Mtr away and cleaning the over head tank thoroughly inside, walls & bottom by using wire brush and removing all the sticky particles including making a rectangle strip of adequate size with black paint on the out side surface of the over head tank and writing date of cleaning with white paint over the strip complete all as directed by Engr-In-Charge.

Dewatering of over head tank of capacity 0.5 Lakhs Gallon up to a height of 70 feet by drain out through washout valve and removing mud, sand, gravel etc from the over head tank manually and depositing out side the over head tank 50 Mtr away and cleaning the over head tank thoroughly inside, walls & bottom by using wire brush and removing all the sticky particles including making a rectangle strip of adequate size with black paint on the out side surface of the over head tank and writing date of cleaning with white paint over the strip complete all as directed by Engr-In-Charge.

M&L for cleaning of MES water supply installations / campus (Approx area 1500 sqm) by surface dressing or trimming of natural ground to remove small unequalities not exceeding 15 cm deep ( including removing vegetation / shrubs / brush wood / under-growth etc.), cleaning of drains & carrying away the rubbish to a distance of not exceeding 50m away complete.

Dewatering of Raw water from filter bed of size 7Mx10M at Long term water supply including mud by pumping or bailing out muddy water from filtration bed which can not be drained out by operation of valves, complete all as specified and directed.

Taking out silt and mud deposited at the filter bed of size 7Mx10M and removal at a distance not exceeding 50 mtr from the starting point (filter bed), complete all as specified and directed.

Removal of quartz sand, gravels of different sizes, obtain from item No.11 (filtter bed) at a distance not exceeding 50 mtr from starting point, complete all as specified and directed.

supply and fixing cast iron lateral pipes 80 mm dia, 3 mtr long flanged type duly fixed with PVC strainers on 20 mm dia sockets complete with nuts, bolts, gaskets etc including dismantling of existing pipes from bottom of filter bed, complete all as specified and directed.

M&L for Plain cement concrete, 1:2:4, type B-0 (using 12.5 mm graded crushed stone aggregate) as in filter bed patches any thick, path and wall, finished even and fair including necessary form work and surface are finished even and smooth using extra cement, complete all as specified and directed.

Applying cement slurry wash on all sides of filter beds at the rate of 3 Kg/Sqm, complete all as specified and directed.

Cleaning & washing of existing chamber and Supply & laying of gravels in First layers of size 20 mm to 25 mm, size of chamber (6M x1M)x6 Nos upto 400 mm depth. complete all as specified and directed.

Supply & laying of gravels in Second layer of size 10 mm to 15 mm, size of chamber (6M x1M)x6 Nos upto 400 mm depth.complete all as specified and directed.

Supply & laying of gravels in Third layer of size 6mm, size of chamber (6M x1M)x6 Nos upto 300 mm depth.complete all as specified and directed.

Supply and laying of 1st layer of quartz sand dusts cleaned and washed of size 0.8 mm – 1.6 mm upto 500 mm depth on filter beds, complete all as specified and directed.

Supply and fixing of cast iron nozzle strainers for cast iron lateral pipes including welding/ fixing with suitable sockets of 20 mm dia, complete all as specified and directed.

Maintenance of Chamber cover including wellding of all broken hindges and paint one coat of redoxide then one coat of existing collour all as specified and directed by Engr-in-charge

Material and labour for valve chamber on existing chamber foundation with 230mm thick brick wall in CM 1:6, 75mm thick coping in PCC 1:2:4 (Type B1), 15mm thick plaster in CM 1:4 over all internal and external wall surface, 25x25x4mm thick MS Angle iron frame and 3.0 mm thick MS chequd plate cover with hinges and necessary locking arrangements painting with two coats of synthetic enamel paint over one coat of red oxide primer all as specified and directed including dismantling and removal of existing damaged chamber except PCC foundation of internal size :-

(a) 600 x 600 x 600mm

(b) 900 x 900 x 750mm

(c) 1000 x1000 x 750mm

Supply and mix alumina ferric (Grade-1) suitable for purification of drinking water in the form of solid lumps/slabs from the manufacturer having valid BIS certificate as specified in table 1 of IS: 299-2012. Note-Each block of alum supplied by the contractor should have a marking indicating weight of the slab and manufacturing date and be in proper packing. The contractor shall submit the lab test report from any Govt approved lab of the alumina ferric supplied. Note:-Quantity of item will be taken on charge by the BOO as per requirement based. 2.Contractor will produce original purchage Vouchers.

Supply and mix bleaching powder stable Gde-I confirming to IS specification 1665/89(Second revision) miniumum available chlorine percentage by mass 34%+1% in 25 kg polythene HDPE bags duly marked date of manufacturing and batch No. of fresh lot. Note : The contractor shall deliver the same as per the site requirement and direction of Engineer-in-charge. Note:-1.Quantity of item will be taken on charge by the BOO as per requirement based. 2.Contractor will produce original purchage Vouchers.

Supply and mix calcium Hypo Chlorite granular in factory sealed HDPE container (45 Kg each) decomposing at 177 C , Mol Wt : 142.98, Toxicity: Oral rat LD : 850mg /kg having chlorination concentration level 70%. Note:-Quantity of item will be taken on charge by the BOO as per requirement based. 2.Contractor will produce original purchage Vouchers.

Deduction to be made from BOQ for schedule of credit (Sch 'A' Part - II) Amount of Rs. 1720.00 during AOC Note:- Tenderers shall not quote for this Schedule

ASHFAQ AHMED MANHAS

Nitika electricals and engineers works

M/s Ashok Kumar

MAMTA ENTERPRISES

ASHOKA ENGINEERS AND BUILDERS