Central Ground Water Board Tender

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Central Ground Water Board - CGWB Tender

Works
Eprocure
Opening Date28 Jul 2023
Closing Date31 Aug 2023
Tender Amount₹ 35,57,52,450 
Notes
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Costs

Summary

Pz With Dwlr In Rajasthan Package 5(b) (jodhpur, Udaipur)

Description

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150 mm (6”) Nominal Bore, thickness 5.4 mm

20944

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Supply and installation of LCG V- wire screen conforming to latest version of IS: 8110-2000 of dimensions given:150 mm (6”) Nominal Size thicnkness 5.4mm with slot opening size given below

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Slot opening 0.75 mm (Stainless Steel SS304 Grade)

2856

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Supply and shrouding of pea gravel confirming to latest version of IS: 4097-1967

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Particle size range 2.00 mm to 4 mm for 0.75 mm slot opening

1699.32

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Supply and filling up borehole/ annular space between casing pipe and bore hole wall with local clay, if required

119

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Development by Air Compressor of adequate capacity for minimum 5 hours, over pumping and by other means till discharge water is clear and free of sand including collection of two water samples from PZ well adopting standard procedure in 1 litre HDPE bottle, along with video recordings of compressor hour meter, discharge etc.

119

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Chemical analysis of water samples for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, SO4, NO3, Cl, F & Fe in NABL accredited labs

119

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Chemical analysis of water samples for Heavy metals (As, U) in NABL accredited labs and submission of report from NABL accredited lab

357

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Construction of cement concrete platform of dimension 0.70 X 0.70 X 0.60 m (0.30 m above ground level) using concrete mix of 1:2:4 around the around the Piezometer well welded with minimum 6 Nos of anchoring plate as per drawing

119

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Supply and fitting of well cap as per drawing with Allen Keys. MS Plate size 5 mm embossed & welded with permanent marking of “ CGWB PZ” should be carved with welding on outer surface of casing pipe

119

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Supply and installation of protection box made of 3 mm GI sheet of Size: 550mm X450mm X530mm along with Brass lock (7 lever hardened) and three keys for each lock as per drawing

119

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Supply and installation of Display Board as per drawing

119

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Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report from NABL lab, site location map and approachability with landmarks, photographs and videos of activities of drilling, assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, water sample collection, well discharge with discharge measurement, well site with display board, well cap, protection box for each site, etc.The soft copy as well as hard copy should be submitted. Summary of Piezometer details in xls format (as per proforma given by CGWB) including details of dia and depth of assembly pipe, screen pipe, static water level, gravel packing depth and thickness, Litholog etc. should be also submitted.

119

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