CONSTRUCTION OF EW and OW in the states of Madhya Pradesh and Chhattisgarh

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, in 1 litre good quality HDPE bottle

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

175 mm (7”) Nominal Bore, thickness 5.4 mm

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, 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.

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe and preparation of composite log along with video recordings

Natural gamma logging submission of logging graph, report along with video recordings

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

Pumping Test incudes prepumping for 8 hours and recuperation for 24 hours, SDT (4 steps), APT for 1000 minutes and 90% or full recovery) and collection of 4 Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle along with video recordings.

Preliminary yield test including collection of 2 Nos. Water samples adopting standard procedure for basic parameter and heavy metals in l litre good qua1ity HDFE bottle and submission of analysis report with data with video recordings.

Slug test and submission of analyis report with data with video recordings.

Reaming with rock roller/ drag/ button bit as appropriate to accommodate part assembly as given below.

Supply and installation of ERW casing pipe (for part assembly conforming to latest version of IS: 4270-2001. The part assembly pipe should be lowered by using reverse socket through drill string. Video of lowering part assembly should also to be submitted

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.

chemical analysis of water samples for 15 parameters pH, EC, TH, TDS, Ca, Mg, Na, K, CO3, HCO3, S04, NO3, Cl, F & Fe in NABL accredited labs and submission of report from NABL lab

chemical analysis of water samples for heavy metals Iron, Chromium, Lead, Uranium 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 minimuin 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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe, 0.5mtrs.

Supply and installation of protection box made of GI sheet of 3.l5 mm 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 drâwing

Preparation and submission of basic data report per site (includes EW and OW) in tripIicate along with logging graphs, data sheets, analysis sheet,Iogging graphs,chemical analysis report from NABL lab, photographs and videos of activities drilling assembly lowering, part assembly lowering, pump lowering, pumping tests, discharge during pumping test, V- notch discharge at various depth of drilling, pumping test with well discharge, compressor development, water sample collection, well site with display board well cap, protection box tec..The soft copy should be submitted. Summary of wells details in xls format including detail of dia and depth housing pipe, part assembly pipe if any, screen pipe if any, static water level, TDS, aquifer parameters, safe discharge, gravel packing, depth and thickness, litholog, depth of fracture zone and respective V-notch discharge etc if any should be also submitted.

Description of Work / Item(s)

Amount

Drilling of overburden by suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 125mm (5") including sample collection at every 3m interval, preparation and submission of litholog,measurement of discharge through V-notch at various stages of drilling, collection of water sample in 1 litre good quality HDPE bottle

Supply and installation of 125 mm(5'') ERW casing pipe conforming to latest version of IS: 4270-2001 and with thickness 5.4mm

supply and installation of LCG V-wire screen conforming to latest verision of IS: 8110 -2000 OF 125 mm (5”) Nominal Size, thickness 5.4mm with slot opening size 1.0 mm

Drilling by DTH method using appropriate sizes of button bits so as to reach targetted depth with diameter of hole not less than 112 mm (4 1/2") 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 ,formation sample collection at every 3 meter intervals , preparation and submission of litholog, discharge measurement etc.

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

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

Pumping Test incudes prepumping for 8 hours and recuperation for 24 hours , SDT (4 steps), APT for 1000 minutes and 90% or full recovery) and collection of 5Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle.

Preliminary yield test by lowering submersible pump of appropriate capacity upto the bottom of the well including collection of 1 nos of water samples for basic analysis and 1 sample for heavy metal analysis including arsenic and uranium for 100 min duration.

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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of Display board as per drawing

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Preparation and submission of basic data report per site (includes EW and OW) in triplicate along with logging graphs, data sheets, analysis sheet,logging graphs ,chemical analysis report from NABL lab, photographs/ video of activity drilling , assembly lowering, part assmbly lowering, pump lowering, pumping tests, discharge during pumping test, V- notch discharge at various depth of drilling, pumping test with well discharge, compressor development, water sample collection, well site with display board well cap, protection box tec.. The soft copy should be submitted.

Description of Work / Item(s)

Amount

Drilling in Gondwana formation using suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 175 mm (7")upto 200m including sample collection at every 3m interval, preparation and submission of litholog,drill time log,measurement of discharge through V-notch at various stages of drilling , collection of water sample in 1 litre good quality HDPE bottle

Supply and installation of 175mm(7'') ERW casing pipe conforming to latest version of IS: 4270-2001 and with thickness 5.4mm

Supply and installation of MS slotted pipes 175mm(7'') conforming to sizes with slotting arrangement of latest version of IS: 8110-2000

Development by Air Compressor of adequate capacity for minimum 5/10 hours, over pumping and by other means till discharge water is clear and free of sand including collection of two water samples from well adopting standard procedure in 1 litre HDPE bottle, along with video recordings of compressor hour meter, discharge etc.

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

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

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

Pumping Test incudes prepumping for 8 hours and recuperation for 24 hours , SDT (4 steps), APT for 1000 minutes and 90% or full recovery) and collection of 5Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle.

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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of Display board as per drawing

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Preparation and submission of basic data report per site (includes EW and OW) in triplicate along with logging graphs, data sheets, analysis sheet,logging graphs ,chemical analysis report from NABL lab, photographs/ video of activity drilling , assembly lowering, part assmbly lowering, pump lowering, pumping tests, discharge during pumping test, V- notch discharge at various depth of drilling, pumping test with well discharge, compressor development, water sample collection, well site with display board well cap, protection box tec.. The soft copy should be submitted.

Description of Work / Item(s)

Amount

Drilling in Gondwana formation using suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 125 mm (5")upto 200m including sample collection at every 3m interval, preparation and submission of litholog,measurement of discharge through V-notch at various stages of drilling in 40 wells collection of water sample in 1 litre good quality HDPE bottle.

Supply and installation of 125mm(5'') ERW casing pipe conforming to latest version of IS: 4270-2001 and with thickness 5.4mm

Supply and installation of MS slotted pipes, 125 mm(5'') in overburdon conforming to sizes with slotting arrangement of latest version of IS: 8110-2000

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

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

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

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 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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Supply and installation of Display board as per drawing

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, in 1 litre good quality HDPE bottle

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

200 mm (8”) Nominal Bore, thickness 5.4 mm

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, 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.

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe and preparation of composite log along with video recordings

Natural gamma logging submission of logging graph, report along with video recordings

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

Pumping Test includes prepumping for 8 hours and recuperation for 24 hours, SDT (4 steps), APT for 1000 minutes and 90% or full recovery) and collection of 4 Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle along with video recordings.

Preliminary yield test including collection of 2 Nos. Water samples adopting standard procedure for basic parameter and heavy metals in l litre good qua1ity HDFE bottle and submission of analysis report with data with video recordings.

Slug test and submission of analyis report with data with video recordings.

Reaming with rock roller/ drag/ button bit as appropriate to accommodate part assembly as given below.

Supply and installation of ERW casing pipe (for part assembly conforming to latest version of IS: 4270-2001. The part assembly pipe should be lowered by using reverse socket through drill string. Video of lowering part assembly should also to be submitted.

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

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 Iron, Chromium, Lead, Uranium 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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should be carved with welding on outer surface of casing pipe 0.5 mtrs

Supply and installation of protection box made of GI sheet of 3.15 mm 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 (includes EW and OW) in tripIicate along with logging graphs, data sheets, analysis sheet,Iogging graphs,chemical analysis report from NABL lab, photographs and videos of activities drilling assembly lowering, part assembly lowering, pump lowering, pumping tests, discharge during pumping test, V- notch discharge at various depth of drilling, pumping test with well discharge, compressor development, water sample collection, well site with display board well cap, protection box tec..The soft copy should be submitted. Summary of wells details in xls format including detail of dia and depth housing pipe, part assembly pipe if any, screen pipe if any, static water level, TDS, aquifer parameters, safe discharge, gravel packing, depth and thickness, litholog, depth of fracture zone and respective V-notch discharge etc if any should be also submitted.

Description of Work / Item(s)

Amount

Drilling of pilot hole not more than 216 mm (8 1/2'') size of rock roller/ drag/ button bit including sample collection at every 3m interval, preparation and submission of litholog,measurement of discharge through V-notch at various stages of drilling in 6 wells collection of water sample in 1 litre good quality HDPE bottle

Electrical logging using 406 mm and 1626 mm (16" and 64") SP resistivity probe and Natural gamma logging. Submission of report including zone wise water quality and preparation of composite log and tentative well Assembly

Reaming of pilot hole not less than 375 mm (14 3/4'') size of suitable bit to accommodate 200 mm (8") well Assembly.

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

EW_200 mm (8”) Nominal Bore, thickness 7.1mm

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 of dimensions given below"

EW_200 mm (8") Nominal Size, thickness 8mm with slot opening size given below

Slot opening 1.0 mm

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

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

Cement sealing at the top depth range 8 to 12m to avoid air losses while drilling the hard rock through DTH drilling and other means of well development.

Development by Air Compressor of adequate capacity for minimum 5/10 hours, over pumping and by other means till discharge water is clear and free of sand including collection of two water samples from well adopting standard procedure in 1 litre HDPE bottle, along with video recordings of compressor hour meter, discharge etc.

Drilling by DTH method below soft rock formation using appropriate sizes of button bits so as to reach targetted depth with diameter of hole not less than 175 mm upto 150 m depth and final diameter not less than 165 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 ,formation sample collection at every 3 meter intervals , preparation and submission of litholog, drill time log ,discharge measurement etc.

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

Pumping Test incudes prepumping for 8 hours and recuperation for 24 hours , SDT (3 steps), APT for 1000 minutes and 90% or full recovery) and collection of 4Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle.

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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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.A MS Plate size 5 to 10mm embossed & welded with permanent marking of “ CGWB EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe ,

Supply and installation of Display board as per drawing

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Preparation and submission of basic data report in triplicate for EW and OW along with logging graphs, data sheets, analysis sheet,logging graphs ,chemical analysis report from NABL lab, photographs/ video of activity drilling assembly, part assembly lowering, pumping test, well site with display board well cap, protection box activity for each EW site, etc.The soft copy should be submitted.

Description of Work / Item(s)

Amount

Drilling of hole to accomodaite 6" well assembly not less than 300 mm(12") by suitable type of bit in soft rock formation s including formation sample collection at every 3m interval and preparation of litholog and drill time log

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

OW_150mm (6”) Nominal Bore, thickness 5.4mm

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 of dimensions given below"

OW_150 mm (6") Nominal Size, thickness 8mm with slot opening size given below

Slot opening 1.0 mm

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

OW_Particle size range 3.35 mm to 4.75 mm for 1.0 mm slot opening

Cement sealing at the top depth range 8 to 12m to avoid air losses while drilling the hard rock through DTH drilling and other means of well development.

Drilling by DTH method below soft rock formation using appropriate sizes of button bits so as to reach targetted depth with diameter of hole not less than 138 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 ,litho sample collection at every 3 meter intervals , preparation and submission of litholog, discharge measurement etc.

Development by Air Compressor of adequate capacity for minimum 5/10 hours, over pumping and by other means till discharge water is clear and free of sand including collection of two water samples from well adopting standard procedure in 1 litre HDPE bottle, along with video recordings of compressor hour meter, discharge etc.

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

chemical analysis of water samples for Heavy metals _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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.A MS Plate size 5 to 10mm embossed & welded with permanent marking of "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe ,

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Supply and installation of Display board as per drawing

Description of Work / Item(s)

Amount

Drilling in Gondwana formation using suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 175 mm (7")upto 200m including litho sample collection at every 3m interval, preparation and submission of litholog,drill time log,measurement of discharge through V-notch at various stages of drilling , collection of water sample in 1 litre good quality HDPE bottle

Supply and installation of 175mm(7'') ERW casing pipe conforming to latest version of IS: 4270-2001 and with thickness 5.4mm

Supply and installation of MS slotted pipes 175mm(7'') conforming to sizes with slotting arrangement of latest version of IS: 8110-2000

Development by Air Compressor of adequate capacity for minimum 5/10 hours, over pumping and by other means till discharge water is clear and free of sand including collection of two water samples from well adopting standard procedure in 1 litre HDPE bottle, along with video recordings of compressor hour meter, discharge etc.

Pumping Test incudes prepumping for 8 hours and recuperation for 24 hours , SDT (3 steps), APT for 1000 minutes and 90% or full recovery) and collection of 4Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle.

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

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

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

Preliminary yield test by lowering submersible pump of appropriate capacity upto the bottom of the wellincluding collection of 3 nos of water samples for basic analysis and 1 sample for heavy metal analysis including arsenic and uranium for 100 min duration / Slug test with 1000 liter water in dry wells

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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of Display board as per drawing

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Preparation and submission of basic data report per site (includes EW and OW) in triplicate along with logging graphs, data sheets, analysis sheet,logging graphs ,chemical analysis report from NABL lab, photographs/ video of activity drilling , assembly lowering, part assmbly lowering, pump lowering, pumping tests, discharge during pumping test, V- notch discharge at various depth of drilling, pumping test with well discharge, compressor development, water sample collection, well site with display board well cap, protection box tec.. The soft copy should be submitted.

Description of Work / Item(s)

Amount

Drilling in Gondwana formation using suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 125 mm (5")upto 200m including sample collection at every 3m interval, preparation and submission of litholog,measurement of discharge through V-notch at various stages of drilling in 40 wells collection of water sample in 1 litre good quality HDPE bottle

Supply and installation of 125mm(5'') ERW casing pipe conforming to latest version of IS: 4270-2001 and with thickness 5.4mm

Supply and installation of MS slotted pipes, 125 mm (5'') in overburdon conforming to sizes with slotting arrangement of latest version of IS: 8110-2000

Development by Air Compressor of adequate capacity for minimum 5/10 hours, over pumping and by other means till discharge water is clear and free of sand including collection of two water samples from well adopting standard procedure in 1 litre HDPE bottle, along with video recordings of compressor hour meter, discharge etc.

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

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

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

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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Supply and installation of Display board as per drawing

Description of Work / Item(s)

Amount

Drilling of overburden by suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 250 mm (10") including sample collection at every 3m interval, preparation and submission of litholog,measurement of discharge through V-notch at various stages of drilling in 39 wells collection of water sample in 1 litre good quality HDPE bottle

Supply and installation of 250mm(10'') ERW casing pipe conforming to latest version of IS: 4270-2001 and with thickness 5.4mm

supply and installation of LCG V-wire screen conforming to latest verision of IS: 8110 -2000 OF 250 mm (10”) Nominal Size, thickness 5.4mm with slot opening size 1.0 mm

Drilling by DTH method using appropriate sizes of button bits so as to reach targetted depth with diameter of hole not less than 165mm at the bottom of hole 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.

Reaming using rock roller/ drag/ button bit for wells using the bit size not less than 238 mm(9-1/2'') in wells encountering collapsable formation at itermittant depth to accommodate part assembly of 175 mm(7'' diameter) in a well. The part assembly 175mm dia pipe should be lowered using reverse socket through drill string.

Supply and installation of ERW casing pipe175mm(7")for part assembly conforming to Table 3 of latest version of IS: 4270-2001. The part assembly pipe should be lowered by using reverse socket through drill string. Video of lowering part assembly should also to be submittted.

supply and installation of LCG V-wire screen conforming to latest verision of IS: 8110 -2000 OF 175 mm (7”) Nominal Size, thickness 5.4mm with slot opening size 1.0 mm

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

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

Pumping Test incudes prepumping for 8 hours and recuperation for 24 hours , SDT (4 steps), APT for 1000 minutes and 90% or full recovery) and collection of 4Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle.

Preliminary yield test by lowering submersible pump of appropriate capacity upto the bottom of the wellincluding collection of 3 nos of water samples for basic analysis and 1 sample for heavy metal analysis including arsenic and uranium for 100 min duration / Slug test with 1000 liter water .

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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Supply and installation of Display board as per drawing

Preparation and submission of basic data report per site (includes EW and OW) in triplicate along with logging graphs, data sheets, analysis sheet,logging graphs ,chemical analysis report from NABL lab, photographs/ video of activity drilling , assembly lowering, part assmbly lowering, pump lowering, pumping tests, discharge during pumping test, V- notch discharge at various depth of drilling, pumping test with well discharge, compressor development, water sample collection, well site with display board well cap, protection box tec.. The soft copy should be submitted.

Description of Work / Item(s)

Amount

Drilling of overburden by suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 200 mm (8") including sample collection at every 3m interval, preparation and submission of litholog,measurement of discharge through V-notch at various stages of drilling in 50 wells collection of water sample in 1 litre good quality HDPE bottle

Supply and installation of ERW casing pipe,200mm(8'') conforming to Table 3 of latest version of IS: 4270-2001

Supply and installation of MS slotted pipes,200mm(8'') in overburdon conforming to sizes with slotting arrangement of latest version of IS: 8110-2000

Drilling by DTH method using appropriate sizes of button bits so as to reach targetted depth with diameter of hole not less than 112 mm (4 1/2") at hole bottom including drilling by appropriate size to accommodate part assembly of 125 mm (5") upto desired depth on the basis of EW 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.

Supply and installation of ERW casing pipe, 125mm(5'')(for part assembly conforming to Table 3 of latest version of IS: 4270-2001. The part assembly pipe should be lowered by using reverse socket through drill string. Video of lowering part assembly should also to be submittted.

Supply and installation of MS slotted pipes, 125mm(5'') conforming to sizes as per Table 1 with slotting arrangement shown in Figure 2 of latest version of IS: 8110-2000

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

Development by Air Compressor of adequate capacity for minimum 1 hours, over pumping and by other means till discharge water is clear and free of sand including collection of two water samples from 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 and submission of report from NABL lab

chemical analysis of water samples for Heavy metals _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Supply and installation of Display board as per drawing

Description of Work / Item(s)

Amount

Drilling of overburden by suitable size of rock roller/ drag/ button bit to accommodate casing pipe of 200mm (8") including sample collection at every 3m interval, preparation and submission of litholog,measurement of discharge through V-notch at various stages of drilling in 70 wells collection of water sample in 1 litre good quality HDPE bottle

Supply and installation of 200mm(8'') ERW casing pipe conforming to latest version of IS: 4270-2001 and with thickness 5.4mm

supply and installation of LCG V-wire screen conforming to latest verision of IS: 8110 -2000 OF 200 mm (8”) Nominal Size, thickness 5.4mm with slot opening size 1.0 mm

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 180 m depth and final diameter not less than 165 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 ,formation sample collection at every 3 meter intervals , preparation and submission of litholog, discharge measurement etc.

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

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

Pumping Test incudes prepumping for 8 hours and recuperation for 24 hours , SDT (4 steps), APT for 1000 minutes and 90% or full recovery) and collection of 5Nos water sample adopting standard procedure for basic parameter and heavy metals in 1 litre good quality HDPE bottle.

Preliminary yield test by lowering submersible pump of appropriate capacity upto the bottom of the wellincluding collection of 3 nos of water samples for basic analysis and 1 sample for heavy metal analysis including arsenic and uranium for 100 min duration / Slug test with 1000 liter water .

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 _Co, Pb, Ni, Zn,Mn,Cu, Arsenic and Uranium in NABL accredited labs

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 EW” for Exploratory Wells & "CGWB OW" for Observation wells should carved with welding on outer surface of casing pipe 0.5mtrs

Supply and installation of Display board as per drawing

Supply and installation of protection box along with Brass lock (7 lever hardened) and three for each lock as per drawing and display of well details on the protection box in hindi and english

Preparation and submission of basic data report per site (includes EW and OW) in triplicate along with logging graphs, data sheets, analysis sheet,logging graphs ,chemical analysis report from NABL lab, photographs/ video of activity drilling , assembly lowering, part assmbly lowering, pump lowering, pumping tests, discharge during pumping test, V- notch discharge at various depth of drilling, pumping test with well discharge, compressor development, water sample collection, well site with display board well cap, protection box tec.. The soft copy should be submitted.