M/o W/s (Two Years Annual Cleaning and Repairing of UGR in Network-76 and 77) Noida.

Cleaning of UGR I/c removal of algas, fungous sand, scrubbing with wire bush narial rassi, sweeping with jharu to give a clear surface, washing of floors and walls inside the tank I/c washing of vertical walls and columns, spraying on the inside of tank walls and ceiling non- tosic, boidegrodable anti- bacterial agent licence form food and drugs administration (FDA) and certified by Govt. approval laboratory for non-toxicity of anti bactirial for tank clening as per OECD guideline 432 Dec'01 (Necessary certificate should be attached).

Mechanized Cleaning, disinfecting and chemical treatment of OHT & UGR of all shapes and size by initially cleaning the external area and the entry manhole with skilled manpower in protective elothing and apparatus etc. and approve electrically odersted equipment including all tools, tackles and consumables and labour, equipment's e.g.e.

A) Mechanical Dewatering

B) The desilting and removal of dirty water and mud with mud removal pump.

C) Cleaning of walls, ceilling and floord by high pressure water jet. The help of eqquipment which create a pressure of 100 to 150 Bar with anti bacterial agent license from food and drugs administration (FDA) disinfecting the tank from all harmful bacteria, Fungi, Algae & Protozoan the active ingredint shall be Banzalkkonnium Chloride solution IP 4% W/V. or Equivalent Similer compound as per the direction & approved by Engineer-in-Charge.

D) Desilting and removal of leftover dirty water and slude with sludge removal pump.

E) Spraying on the inside of tank walls and ceiling non-toxic, biodegradable anti- bacterial agent certified by Govt. approval laboratory to disinfect the tank with dosing as per OECD guideline 432 Dec'01 (Necessary certificate should be attached)

F) Treatment of inside of tank walls ceiling by exposing to Ultra Violet radiation to kill further suspended or floating bacteria ig any.

P/F Stainless Steel (Grade 304) railing made of Hollow tubes, channels, plates etc. i/c welding, grinding, buffing, polishing and making curvature (wherever required) and fitting the same with necessary stainless steel nuts and bolts complete i/c fixing the railing with necessary accessories & stainless steel dash fasteners, stainless steel bolts etc. of required size, on the top of the floor or the side of waist slab with suitable arrangement as per approval of Engineer-in-charge, (for payment purpose only weight of stainless steel members shall be considered excluding fixing accessories such as nuts, bolts, fasteners etc.

Steel work welded in built up sections/framed work i/c hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required in gratings, frames, guard bar, ladders, railings, brackets, gates & similar works.

Class-150 Brick Work in 1:4 Cement and Coarse Sand 2.2 FM mortar in foundation & plnith i/c supply of all materials, labour and T&P etc. required for proper completion of the work.

12 mm cement plaster of mix 1:4 (1 Cement : 4 C. Sand).

Neat cement punning.

Cement Concrete with 4 cm gauge approved stone ballast, coarse sand & cement in the proportion of 8:4:1 i/c supply of all material, labour, Tools and plants etc. required for proper completion of the work.

P/L in position Cement Concrete of specified grade excluding the cost of centering and shuttering, all work up to plinth level in 1:2:4 (1 Cement : 2 C. Sand : 4 graded stone agg. 20 mm n.s.

Cleaning Jungles including uprooting of rank vegetation grass, bushes, wood trees and sapling of girth upto 30cm measured at a height of 1 meter above ground level and removal of rubbish upto a distance of 50 meters out side the periphery of area cleared. (UPPWD SOR-20/259/P-15)

Supply & Shrounding the annular space between Tube Well bore and assembly with 2mm to 5mm thick Pea gravel.

Development of tubewell by air compressor/over pumping unit having capacity of 350 cfm should be such depresed water level 10 Mtr. or as may be approved by the E/I so as to get average Yield of about 6000 LPM and making water reasonable sand free i/c 10 parts/million of water in volume within 15 minutes. The period of development by air compressor may be 100 hrs. may be stop earlier if required by the E/I or development of well as above by O.P. Unit.