Periodical Monitoring of Permanent Hydrograph Stations for measurement of ground water level and preparation of Hydrogeological and Groundwater Resource condition

Hire Charges for Hiring of Vehicle for Field Visit and Official Work (Inspection for Permit, Issuance of Certificate of Registration, Industry Visit, Revisit, Meeting Attendance and Sample Collection) Sample Collection from all Stations (April / November) – 2 times in a year Darjeeling – 930 km Dakshin Dinajpur – 2040 km Sub-total (Sample Collection) – 2970 km Site Maintenance in all Stations (January / August) – 2 times in a year Darjeeling – 870 km Dakshin Dinajpur – 0 km Sub-total (Site Maintenance) – 870 km Total run per cycle – 3840 km Number of cycles per year – 2 Total annual run – 7680 km

Surface Dressing of the ground in any kind of soil including removal of vegetation, inequalities not exceeding 15 cm in depth and disposal of rubbish within a lead up to 75 m, as directed. Darjeeling – Total area = 50 × 9 Sqm × 2 times = 900 Sqm Dakshin Dinajpur – Total area = 57 × 9 Sqm × 2 times = 1026 Sqm Total Area = 1926 Sqm

Clearing compound premises of shrubs, plants, jungles etc. by cutting and removing as directed (Specific permission of Engineer-in-Charge prior to execution will be necessary). Payment to be made on area cleared. Area = 3 m × 3 m = 9 Sqm (twice a year) Darjeeling – Total area = 50 × 9 Sqm × 2 times = 900 Sqm Dakshin Dinajpur – Total area = 57 × 9 Sqm × 2 times = 1026 Sqm Total Area = 1926 Sqm

Charges for collection of water sample as per direction in double-capped “Alkathene Bottle” of 500 ml capacity, i.e., supply thereof and delivery of sample bottle at office. Darjeeling – Total samples = 50 nos × 2 times = 100 nos Dakshin Dinajpur – Total samples = 57 nos × 2 times = 114 nos Total = 214 nos

Labour charges for measuring water level from P. Tube / Dug Well / Tube Well by water level indicator / sounding / tape, etc., including hiring and carrying charges of tools, as directed. Measurement must be taken as per direction of Engineer-in-Charge. For DW and P-Tube without DWLR Darjeeling District – 50 nos stations × 4 times = 200 nos Dakshin Dinajpur – 57 nos stations x 4 times = 228 nos No. of measurements = 428 nos

Supply of G.I. pipes of TATA make including necessary socket. Darjeeling District – 3 nos stations × 1 time = 3 nos Dakshin Dinajpur – 57 nos stations × 1 time = 57 nos Total No. of TW stations = 60 nos Considering 0.5 m per 2 points = 30 nos × 0.5 m = 15 m

Labour for fitting and fixing G.I. pipes above ground (exposed) in structure with holder bat clamps including cost of jointing materials, holder bat clamps etc as necessary , inlcuding cutting pipes, making threads, etc complete in all respect with two coats of painting with approved paint any height, (Payment will be makde on the centre line measurement of the total pipeline including specials. Payment of painting will be paid seperately). a) 50mm dia Length of pipe =

Supply of galvanised iron socket with ISI mark i) 50mm dia"

Supply of galvanised iron jamnut i) 50mm dia"

Taking photograph of ground water level depth measurement using GPS-enabled Android mobile or other similar devices, with real-time GPS time, longitude, latitude and ID of P.H.S. Location details shall be stamped on the photograph. The agency shall email the water level data in Excel format along with photographs taken for each site to the official email ID within the specified time, as directed by the Engineer-in-Charge. Darjeeling District – 50 nos stations × 4 times = 200 nos Dakshin Dinajpur – 57 nos stations × 4 times = 228 nos No. of measurements = 428 nos