Construction of Piezometers 24 Nos in Soft Rock/Hard Rock/ Bouldery Formation in the state of Assam, Meghalaya and Arunachal Pradesh

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

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 5 Nos of anchoring plate as per drawing

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys for each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, 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 using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4") Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

Construction of cement concrete platform of dimension 0.70x0.70x0.60m (0.30m above ground level) using concrete mix of 1:2:4 around the Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing.

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, 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 using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4") Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

Construction of cement concrete platform of dimension 0.70x0.70x0.60m (0.30m above ground level) using concrete mix of 1:2:4 around the Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing.

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, 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 using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

Construction of cement concrete platform of dimension 0.70x0.70x0.60m (0.30m above ground level) using concrete mix of 1:2:4 around the Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing.

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, screen pipe, static water level, gravel packing depth and thickness, Litholog etc. should be also be submitted.

Description of Work / Item(s)

Amount

Drilling of pilot hole not larger than 216 mm (8 ½”) by rock roller/ drag bit using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

Construction of cement concrete platform of dimension 0.70x0.70x0.60m (0.30m above ground level) using concrete mix of 1:2:4 around the Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing.

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, 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 using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

Construction of cement concrete platform of dimension 0.70x0.70x0.60m (0.30m above ground level) using concrete mix of 1:2:4 around the Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing.

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, 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 using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

Construction of cement concrete platform of dimension 0.70x0.70x0.60m (0.30m above ground level) using concrete mix of 1:2:4 around the Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing.

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, 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 using bentonite mud fluid including sample collection and preparation of litholog

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

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

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 mm for 1.0 mm and 0.75 mm slot opening

Development by air compressor

Construction of cement concrete platform of dimension 0.70x0.70x0.60m (0.30m above ground level) using concrete mix of 1:2:4 around the Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing.

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, screen pipe, static water level, gravel packing depth and thickness, Litholog etc. should be also submitted.

Description of Work / Item(s)

Amount

Drilling of over burden using rock roller/ drag bit/Buton bit to accommodate casing pipe of 175 mm (7") dia up to bed rock including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recordings

Drilling by DTH method using appropriate sizes of button bits so as to reach targeted depth with diameter of hole not less than 165 mm up to the targeted depth including sample collection and prepartion of litholog

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

175 mm (7”) Nominal Bore

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.0 mm

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

Particle size range 2.00 mm to 3.35 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

Developement by suitable air compressor till water become sand/slit free ( minimum 3 hours) and collection of 2 water samples in teflone coated/HDPE Bottle per site) and submission of data in prescribed porforma and analysis report

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 Piezometer well welded with minimum 5 Nos of anchoring plate as per drawing

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, screen pipe, static water level, gravel packing depth and thickness, Litholog etc. should be also submitted.

Description of Work / Item(s)

Amount

Drilling of over burden using rock roller/ drag bit/Buton bit to accommodate casing pipe of 175 mm (7") dia up to bed rock including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recordings

Drilling by DTH method using appropriate sizes of button bits so as to reach targeted depth with diameter of hole not less than 165 mm up to the targeted depth including sample collection and prepartion of litholog

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

175 mm (7”) Nominal Bore

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.5 mm

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

Particle size range 2.00 mm to 3.35 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

Developement by suitale air compressor till water become sand/slit free ( minimum 3 hours) and collection of 2 water samples in teflone coated/HDPE Bottle per site) and submission of data in prescribed porforma and analysis report

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 installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, screen pipe, static water level, gravel packing depth and thickness, Litholog etc. should be also submitted.

Description of Work / Item(s)

Amount

Drilling of over burden using rock roller/ drag bit/Buton bit to accommodate casing pipe of 175 mm (7") dia up to bed rock including formation sample collection at every 3m and change in formation , preparation and submission of litholog along with video recordings

Drilling by DTH method using appropriate sizes of button bits so as to reach targeted depth with diameter of hole not less than 165 mm up to the targeted depth including sample collection and prepartion of litholog

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

175 mm (7”) Nominal Bore

100 mm (4”) Nominal Bore

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

100 mm (4”) Nominal Size Slot opening 1.5 mm

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

Particle size range 2.00 mm to 3.35 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

Developement by suitale air compressor till water become sand/slit free ( minimum 3 hours) and collection of 2 water samples in teflone coated/HDPE Bottle per site) and submission of data in prescribed porforma and analysis report

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

Supply and installation of protection box made of 3mm GI Sheet of size 550mm x450mmx530mm along with bruss lock (7 lever hardened ) and 3 keys 4 each lock as per drawing. CGWB PZ should be carved with welding on outer surface of casing pipe. Salient features of the wells to be legibilly painted/printed on the protection box

Preparation and submission of basic data report per site in triplicate along with data sheets, analysis sheet, chemical analysis report. Ground Water sample will be collected by the Vendor from each site for which sample bottles/acids will be supplied by CGWB, NER. After sample collection, sample bottles need to be submitted to the CGWB, NER, Chemical Lab for analysis. Chemical findings will be shared with the Vendor by CGWB, NER for due incorporation in the BDR. Site location map and approachability with landmarks, photograohs and video and activities of drilling assembly lowering, gravel measurement and gravel packing, well development using compressor and well water discharge, well site with display board, well cap, protection box for each site etc. The soft copy as well as hard copy should be submitted. Summery of Piezometer details in xls format (as per proforma given by CGWB) including detatails of dia and depth of assembly pipes, screen pipe, static water level, gravel packing depth and thickness, Litholog etc. should be also submitted.

BSR CORPORATION Pvt Ltd

Tremend Drillco Pvt Ltd

shivdrillers

Tremend Drillco Pvt Ltd

BSR CORPORATION Pvt Ltd

Tremend Drillco Pvt Ltd

BSR CORPORATION Pvt Ltd

Tremend Drillco Pvt Ltd

shivdrillers

Tremend Drillco Pvt Ltd

BSR CORPORATION Pvt Ltd

Tremend Drillco Pvt Ltd

shivdrillers

Tremend Drillco Pvt Ltd

Tremend Drillco Pvt Ltd

shivdrillers

Tremend Drillco Pvt Ltd

BSR CORPORATION Pvt Ltd

Tremend Drillco Pvt Ltd

BSR CORPORATION Pvt Ltd

Tremend Drillco Pvt Ltd

BSR CORPORATION Pvt Ltd