Construction of PZ with DWLR in the states of Andhra Pradesh, Telangana, Tamilnadu and Kerela

Amount

Drilling of pilot hole for EW not larger than 216 mm (8 1/2”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe, Natural Gamma Logging to target depth of max. 125 m, submission of report including zone wise water quality and preparation of composite log along with vedeo recording.

Enlargement of hole by reaming to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Using 311.15 mm ( 12-1/4”) RR Bit for 100 mm (4”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001 of diameter and thickness given below

100 mm (4”) Nominal Bore, thickness 5.4mm

Supply and installation of Stainless Steel slotted pipes regular Grade ERW Stainless Steel Cage Type V-wire wound screen as per IS: 8110-95 and material specifications as per AISI type 304, Grade SS-304 suitable for water well construction of dimensions given below

100 mm (4”) Nominal Size thickness 5.4mm with Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

Cement sealing using 53 grade cement of 5m thickness including 1m thick fine sand/ clay between cement seal and Gravel pack.

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

Delopment 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 ltr. SDPE bottle along with video recordings of Compressor hour meter, discharge etc.,

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

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

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 housing pipe welded withminimum 6 Nos of anchoring plate as per drawing

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" for should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of GI sheet of 3.15mm thickness protection box along with Brass lock (7 lever hardened) and three keys for each lock as per drawing

Supply and installation of Display board as per drawing

Preparation and submission of basic data report per site in triplicate along with logging graphs, data sheets, analysis sheet ,chemical analysis report from NABL lab, site location map and approachability with land marks, photographs/ 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 activity for each site, etc. The soft copy should also be submitted.

Description of Work / Item(s)

Amount

Drilling of overburden by rock roller/ drag/ button bit to accommodate casing pipe including sample collection , preparation and submission of litholog with video recordings.

Calliper logging, submission of logging graph, report along with video recordings

Enlargement of hole by reaming in PZ to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Drilling by DTH method using appropriate sizes of button bits so as to reach targetted depth with diameter of hole not less than 165 mm at 100 m depth and final diameter not less than 152 mm at hole bottom including measurement of discharge through V-notch at various stages (depth) of drilling , collection of water sample for each aquifer formation/fracture zone encountered adopting standard procedure in good quality HDPE bottles for basic parametes and for heavy metals, formation sample collection at every 3 meter intervals , preparation and submission of litholog, discharge measurement etc with video recordings discharge and V notch readings, lithlog samples.

Supply and installation of ERW casing pipe conforming to the latest version of IS: 4270-2001 and thickness given below

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

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Collection of Water Samples for Chemical analysis for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, SO4, NO3, Cl, F & Fe in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Collection of Water Samples for Chemical analysis for Heavy metals Uranium, Arsenic. in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Supply and fitting of Well Cap as per drawing wiyth 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.

Contruction 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 Piezometer well welded with minimum 6 Nos. of anchoring plate as per drawing.

Supply and installation of protection box made of minimum 3 mm GI Sheet of 550 mm x 450 mm x 530mm along with Branded Brass Lock (7 lever hardened) and individual three Keys for each lock (Universal Key)

Supply and installation of Display Board as per drawing

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recording

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in Piezometer to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below.

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

150 mm (6”) Nominal Bore

Supply and installation of MS slotted pipes conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

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

Development by Air Compressor of adequate capacity for 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.

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

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

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

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

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

Supply and installation of Display Board as per drawing

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recording

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in Piezometer to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below.

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

150 mm (6”) Nominal Bore

Supply and installation of MS slotted pipes conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

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

Development by Air Compressor of adequate capacity for 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.

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

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

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

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

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

Supply and installation of Display Board as per drawing

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recording

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in Piezometer to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below.

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

150 mm (6”) Nominal Bore

Supply and installation of MS slotted pipes conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

Cement sealing

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

Development by Air Compressor of adequate capacity for 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.

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

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

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

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

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

Supply and installation of Display Board as per drawing

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recording

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in Piezometer to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below.

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

150 mm (6”) Nominal Bore

Supply and installation of MS slotted pipes conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

Cement sealing

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

Development by Air Compressor of adequate capacity for 5 hours, over pumping and by other means till discharge water is clear and free of sand includingcollection 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.

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

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

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

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

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

Supply and installation of Display Board as per drawing

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recording

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in Piezometer to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below.

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

150 mm (6”) Nominal Bore

Supply and installation of MS slotted pipes conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

Cement sealing

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

Development by Air Compressor of adequate capacity for 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.

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

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

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

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

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

Supply and installation of Display Board as per drawing

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recording

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in Piezometer to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below.

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

150 mm (6”) Nominal Bore

Supply and installation of MS slotted pipes conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

Cement sealing

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

Development by Air Compressor of adequate capacity for 10 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.

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

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

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

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

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

Supply and installation of Display Board as per drawing

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recording

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in Piezometer to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below.

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

150 mm (6”) Nominal Bore

Supply and installation of MS slotted pipes conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

Cement sealing

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

Development by Air Compressor of adequate capacity for 10 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.

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

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

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

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

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

Supply and installation of Display Board as per drawing

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Description of Work / Item(s)

Amount

Without Quality Probe: Supply, Installation, testing, commissioning, training for Digital Water Level Recorders (DWLRs) with non-vented hydrostatic pressure type sensorand barometric pressure correction and, with temeprature sensor for individual station with desired measurement range and standard sensor cable along with junction boxes and 5 meter signal cable, to be installed at depth as per list and necessary accessories with battery operated data logger and telemetry System based on GSM & GPRS as per the technical specifications (As the tender document) to be installed at designated locations as per list in tender document. This includes 05 years comprehensive warranty andO&M which also includes replacement of batteries as & when required, replacement of spares/parts/equipments/consumables, periodic inspections, repairing/service charges, the cost of Communication using GSM & GPRS SIM and other related charges. Minimum One Service Engineer shall be placed at concerned RODC for Operation of DWLR system with Telemetry. This is a Continuous activity for five years after successful commissioning and final acceptance certificate of DWLR. This also includeTraining of the purchaser's personnel by the supplier on assembly, startup, operation, maintenance and/or repair of DWLR with telemetry and relevant software and supplied goods.Two types of trainings are to be organised. (i) Onsite training to be organised in each State where DWLRs are to be installed. One onsite trainings for each State (ii) Training at concerned Regional Office Data Center( RODC) of CGWB. Two trainings at concerned RODC. Course topics will include sensor calibration, data logger configuration, data downloading, data retrieval, collection, Trouble shooting, processing maintenance requirements and procedure for equipment configuration, installation, site testing and commissioning including training kit containing course material in soft and hard copies as per technical specification. Note: For Validation of data, Physical measurement shall be cross checked with the data generated from DWLR.

With Quality Probe:Digital Water Level Recorders (DWLRs) with non-vented hydrostatic pressure type sensorand barometric pressure correction and, with temeprature sensor and with electrical conductivity for individual station with desired measurement range and standard sensor cable along with junction boxes and 5 meter signal cable, to be installed at depth as per list and necessary accessories with battery operated data logger and telemetry System based on GSM & GPRS as per the technical specifications (As per the tender document) to be installed at designated locations as per list in tender document. This includes 05 years comprehensive warranty andO&M which also includes replacement of batteries as & when required, replacement of spares/parts/equipments/consumables, periodic inspections, repairing/service charges, the cost of Communication using GSM & GPRS SIM and other related charges. Minimum One Service Engineer shall be placed at concerned RODC for Operation of DWLR system with Telemetry. This is a Continuous activity for five years after successful commissioning and final acceptance certificate of DWLR. This also includeTraining of the purchaser's personnel by the supplier on assembly, startup, operation, maintenance and/or repair of DWLR with telemetry and relevant software and supplied goods.Two types of trainings are to be organised. (i) Onsite training to be organised in each State where DWLRs are to be installed. One onsite trainings for each State (ii) Training at concerned Regional Office Data Center( RODC) of CGWB. Two trainings at concerned RODC. Course topics will include sensor calibration, data logger configuration, data downloading, data retrieval, collection, Trouble shooting, processing maintenance requirements and procedure for equipment configuration, installation, site testing and commissioning including training kit containing course material in soft and hard copies as per technical specification. Note: For Validation of data, Physical measurement shall be cross checked with the data generated from DWLR. and standard sensor cable along with junction boxes and 5 meter signal cable, to be installed at depth as per list and necessary accessories with battery operated data logger and telemetry System based on GSM & GPRS as per the technical specifications (As per the tender document) to be installed at designated locations as per list in tender document.

Server of reputed brand with accessaries, work station and 3 KVA online UPS as per tender document. ( One set up to be created at the concerned RODC and one at NDC Faridabad)

IT hardware which includes required static, IP, router, switch, firewall system & A3 size color printer.

42" LED Display system as per technical specifications.

High Speed Interned Connection (minimum 8 mbps upload and 8 mbps download) for five years.

GSM &GPRS data receiving system with all ancillary equipment as per technical specifications.

Installation, Testing and Commissioning of Server along with monitor, Computer node (Workstation) and 3 KVA online UPS as per technical specifications .

Installation, testing & commissioning of IT hardware which includes required static IP, router, switch, firewall system & A3 Size Color Printer.

Installation, testing & commissioning of 42" LED Display system as per technical specifications.

Installation, testing & commissioning & charges of High Speed Internet Connection (minimum 8 mpbs upload and 8 mbps download) for 5 years.

Installation, testing & commissioning GSM & GPRS data receiving system with all ancillary equipment as per technical specifications.

Comprehensive AMC for DWLR with telemetry System along with all accessories, installed at designated locations and Data Centerequipments as specified in schedule of requirement after 5 years warranty period. This includes the replacement of batteries as and when required, replacement of spares/parts/equipments/consumables, periodic inspections, repairing/service charges, the cost of communication using GSM & GPRS, SIM and High Speed Internet charges and other related charges. Note: Continuous activity for Two year after five years comprehensiveO&M and warranty period.

Description of Work / Item(s)

Amount

Drilling of overburden by rock roller/ drag/ button bit to accommodate casing pipe (150mm NB, thickness- 5.0mm, Outer Dia- 168mm) including sample collection , preparation and submission of litholog with video recordings, in 1 liter good quality HDPE bottle

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

Outer Dia- 168mm, thickness- 5.0mm (NB- 150 mm , 6”)

Drilling by DTH method using appropriate sizes of button bits so as to reach targeted depth with diameter of hole not less than 150 mm at 120 m depth including measurement of discharge through V-notch at various stages (depth) of drilling , collection of water sample for each aquifer formation/fracture zone encountered adopting standard procedure ,formation sample collection at every 3 meter intervals , preparation and submission of litholog, discharge measurement etc with video recordings discharge and V notch readings, lithlog samples.

Caliper logging, submission of logging graph, report along with video recordings

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 and submission of report from NABL lab

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

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 housing pipe welded with minimum 6 Nos of anchoring plate as per drawing

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" for should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of protection box made of GI sheet of 3.15mm thickness along with Brass lock (7 lever hardened) and three keys for each lock as per drawing

Supply and installation of Display board as per specification in drawing

Preparation and submission of basic data report per site in triplicate along with logging graphs, data sheets, analysis sheet, chemical analysis report from NABL lab, photographs and videos of activities drilling, V- notch discharge at various depth of drilling, water sample collection, well site with display board well cap, protection box etc. The soft copy should be submitted. Summary of wells details in xls format including details of dia and depth housing pipe, part assembly pipe if any, screen pipe if any, static water level, TDS, , litholog, depth of fracture zone and respective V-notch discharge etc if any should be also as per BDR format submitted.

Description of Work / Item(s)

Amount

Drilling of pilot hole for EW not larger than 216 mm (8 1/2”) by rock roller/ drag bit including formation sample collection at every 3m and change in formation , preparation and submission of litholog

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe, Natural Gamma Logging to target depth of max. 125 m, submission of report including zone wise water quality and preparation of composite log along with vedeo recording.

Enlargement of hole by reaming to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Using 311.15 mm ( 12-1/4”) RR Bit for 100 mm (4”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001 of diameter and thickness given below

100 mm (4”) Nominal Bore, thickness 5.4mm

Supply and installation of Stainless Steel slotted pipes regular Grade ERW Stainless Steel Cage Type V-wire wound screen as per IS: 8110-95 and material specifications as per AISI type 304, Grade SS-304 suitable for water well construction of dimensions given below

100 mm (4”) Nominal Size thickness 5.4mm with Slot opening 1.5 mm

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

Particle size range 3.35 mm to 4.75 mm for 1.5 mm slot opening

Cement sealing using 53 grade cement of 5m thickness including 1m thick fine sand/ clay between cement seal and Gravel pack.

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

Delopment 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 ltr. SDPE bottle along with video recordings of Compressor hour meter, discharge etc.,

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

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

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 housing pipe welded withminimum 6 Nos of anchoring plate as per drawing

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" for should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of GI sheet of 3.15mm thickness protection box along with Brass lock (7 lever hardened) and three keys for each lock as per drawing

Supply and installation of Display board as per drawing

Preparation and submission of basic data report per site in triplicate along with logging graphs, data sheets, analysis sheet ,chemical analysis report from NABL lab, site location map and approachability with land marks, photographs/ 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 activity for each site, etc. The soft copy should also be submitted.

Description of Work / Item(s)

Amount

Drilling of overburden by rock roller/ drag/ button bit to accommodate casing pipe (150mm NB, thickness- 5.0mm, Outer Dia- 168mm) including sample collection , preparation and submission of litholog with video recordings, in 1 liter good quality HDPE bottle

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS: 4270-2001

Outer Dia- 168mm, thickness- 5.0mm (NB- 150 mm , 6”)

Drilling by DTH method using appropriate sizes of button bits so as to reach targeted depth with diameter of hole not less than 150 mm at 120 m depth including measurement of discharge through V-notch at various stages (depth) of drilling , collection of water sample for each aquifer formation/fracture zone encountered adopting standard procedure ,formation sample collection at every 3 meter intervals , preparation and submission of litholog, discharge measurement etc with video recordings discharge and V notch readings, lithlog samples.

Caliper logging, submission of logging graph, report along with video recordings

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 and submission of report from NABL lab

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

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 housing pipe welded withminimum 6 Nos of anchoring plate as per drawing

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" for should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of protection box made of GI sheet of 3.15mm thickness along with Brass lock (7 lever hardened) and three keys for each lock as per drawing

Supply and installation of Display board as per specification in drawing

Preparation and submission of basic data report per site in triplicate along with logging graphs, data sheets, analysis sheet, chemical analysis report from NABL lab, photographs and videos of activities drilling, V- notch discharge at various depth of drilling, water sample collection, well site with display board well cap, protection box etc. The soft copy should be submitted. Summary of wells details in xls format including details of dia and depth housing pipe, part assembly pipe if any, screen pipe if any, static water level, TDS, , litholog, depth of fracture zone and respective V-notch discharge etc if any should be also as per BDR format submitted.

Description of Work / Item(s)

Amount

Drilling of Pilot hole for Pz not larger than 216 mm (8-1/2") by rock roller/ drag bit including sample collection and preparation of litholog

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in PZ to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS:4270-2001 of diameter and thickness given below

150 mm (6") Nominal Bore thickness 5.4mm

Supply and installation of LCG V- wire screen conforming to latest version of IS:8110-2000 of dimensions given below

150 mm (6") Nominal Size thickness 7mm with Slot opening1.5 mm

Supply and shrouding of pea gravel confirming to latest version of IS:4.97-1967

Particle size range 2.00 mm to 4.5 mm for 1.0 mm and 0.75 mm slot opening

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

Development by Air Compressor of adequate capacity for minimum 10 hours till discharge water is clear and free of sand including collection of water samples from PZ.

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Collection of Water Samples for Chemical analysis for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, SO4, NO3, Cl, F & Fe in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Collection of Water Samples for Chemical analysis for Heavy metals Uranium, Arsenic. in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Supply and fitting of Well Cap as per drawing wiyth 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.

Contruction 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 Piezometer well welded with minimum 6 Nos. of anchoring plate as per drawing.

Supply and installation of protection box made of minimum 3 mm GI Sheet of 550 mm x 450 mm x 530mm along with Branded Brass Lock (7 lever hardened) and individual three Keys for each lock (Universal Key)

Supply and installation of Display Board as per drawing

Cement Sealing of 3m thickness with cement grade 53

Description of Work / Item(s)

Amount

Drilling of Pilot hole for Pz not larger than 216 mm (8-1/2") by rock roller/ drag bit including sample collection and preparation of litholog

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in PZ to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS:4270-2001 of diameter and thickness given below

150 mm (6") Nominal Bore thickness 5.4mm

Supply and installation of LCG V- wire screen conforming to latest version of IS:8110-2000 of dimensions given below

150 mm (6") Nominal Size thickness 7mm with Slot opening1.5 mm

Supply and shrouding of pea gravel confirming to latest version of IS:4.97-1967

Particle size range 2.00 mm to 4.5 mm for 1.0 mm and 0.75 mm slot opening

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

Development by Air Compressor of adequate capacity for minimum 10 hours till discharge water is clear and free of sand including collection of water samples from PZ.

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Collection of Water Samples for Chemical analysis for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, SO4, NO3, Cl, F & Fe in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Collection of Water Samples for Chemical analysis for Heavy metals Uranium, Arsenic. in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Supply and fitting of Well Cap as per drawing wiyth 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.

Contruction 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 Piezometer well welded with minimum 6 Nos. of anchoring plate as per drawing.

Supply and installation of protection box made of minimum 3 mm GI Sheet of 550 mm x 450 mm x 530mm along with Branded Brass Lock (7 lever hardened) and individual three Keys for each lock (Universal Key)

Supply and installation of Display Board as per drawing

Cement Sealing of 3m thickness with cement grade 53

Description of Work / Item(s)

Amount

Drilling of Pilot hole for Pz not larger than 216 mm (8-1/2") by rock roller/ drag bit including sample collection and preparation of litholog

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in PZ to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS:4270-2001 of diameter and thickness given below

150 mm (6") Nominal Bore thickness 5.4mm

Supply and installation of LCG V- wire screen conforming to latest version of IS:8110-2000 of dimensions given below

150 mm (6") Nominal Size thickness 7mm with Slot opening1.5 mm

Supply and shrouding of pea gravel confirming to latest version of IS:4.97-1967

Particle size range 2.00 mm to 4.5 mm for 1.0 mm and 0.75 mm slot opening

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

Development by Air Compressor of adequate capacity for minimum 10 hours till discharge water is clear and free of sand including collection of water samples from PZ.

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Collection of Water Samples for Chemical analysis for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, SO4, NO3, Cl, F & Fe in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Collection of Water Samples for Chemical analysis for Heavy metals Uranium, Arsenic. in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

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.

Contruction 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 Piezometer well welded with minimum 6 Nos. of anchoring plate as per drawing.

Supply and installation of protection box made of minimum 3 mm GI Sheet of 550 mm x 450 mm x 530mm along with Branded Brass Lock (7 lever hardened) and individual three Keys for each lock (Universal Key)

Supply and installation of Display Board as per drawing

Cement Sealing of 3m thickness with cement grade 53

Description of Work / Item(s)

Amount

Drilling of Pilot hole for Pz not larger than 216 mm (8-1/2") by rock roller/ drag bit including sample collection and preparation of litholog

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe , Natural gamma logging to the target depth, submission of report including zone wise water quality and preparation of composite log along with video recordings

Enlargement of hole by reaming in PZ to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Using 381 mm ( 15”) RR Bit for 150 mm (6”) assembly pipe

Supply and installation of ERW casing pipe conforming to Table 3 of latest version of IS:4270-2001 of diameter and thickness given below

150 mm (6") Nominal Bore thickness 5.4mm

Supply and installation of LCG V- wire screen conforming to latest version of IS:8110-2000 of dimensions given below

150 mm (6") Nominal Size thickness 7mm with Slot opening1.5 mm

Supply and shrouding of pea gravel confirming to latest version of IS:4.97-1967

Particle size range 2.00 mm to 4.5 mm for 1.0 mm and 0.75 mm slot opening

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

Development by Air Compressor of adequate capacity for minimum 10 hours till discharge water is clear and free of sand including collection of water samples from PZ.

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Collection of Water Samples for Chemical analysis for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, SO4, NO3, Cl, F & Fe in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Collection of Water Samples for Chemical analysis for Heavy metals Uranium, Arsenic. in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Supply and fitting of Well Cap as per drawing wiyth 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.

Contruction 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 Piezometer well welded with minimum 6 Nos. of anchoring plate as per drawing.

Supply and installation of protection box made of minimum 3 mm GI Sheet of 550 mm x 450 mm x 530mm along with Branded Brass Lock (7 lever hardened) and individual three Keys for each lock (Universal Key)

Supply and installation of Display Board as per drawing

Cement Sealing of 3m thickness with cement grade 53

Description of Work / Item(s)

Amount

Drilling of overburden by rock roller/ drag/ button bit to accommodate casing pipe including sample collection , preparation and submission of litholog with video recordings.

Calliper logging, submission of logging graph, report along with video recordings

Enlargement of hole by reaming in PZ to accommodate well assembly of recommended size and gravel envelop of minimum 100 mm thickness as given below

Drilling by DTH method using appropriate sizes of button bits so as to reach targetted depth with diameter of hole not less than 165 mm at 100 m depth and final diameter not less than 152 mm at hole bottom including measurement of discharge through V-notch at various stages (depth) of drilling , collection of water sample for each aquifer formation/fracture zone encountered adopting standard procedure in good quality HDPE bottles for basic parametes and for heavy metals, formation sample collection at every 3 meter intervals , preparation and submission of litholog, discharge measurement etc with video recordings discharge and V notch readings, lithlog samples.

Supply and installation of ERW casing pipe conforming to the latest version of IS: 4270-2001 and thickness given below

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

Preparation and submission of basic data report (Electrical and Gamma Logging data, graphs & analysis to be included in the BDR) 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.

Collection of Water Samples for Chemical analysis for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, SO4, NO3, Cl, F & Fe in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Collection of Water Samples for Chemical analysis for Heavy metals Uranium, Arsenic. in NABL accredited labs and submission of original report from NABL lab and data to be included in BDR

Supply and fitting of Well Cap as per drawing wiyth 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.

Contruction 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 Piezometer well welded with minimum 6 Nos. of anchoring plate as per drawing.

Supply and installation of protection box made of minimum 3 mm GI Sheet of 550 mm x 450 mm x 530mm along with Branded Brass Lock (7 lever hardened) and individual three Keys for each lock (Universal Key)

Supply and installation of Display Board as per drawing