Extension and remodelling of existing pipeline of different DTW Schemes and providing FHTC in Trishna VC under Rajnagar RD Block under DWS Sub-Division, Barpathari during the year 2025-26 (FFC Fund).

Drilling and boring of pilot hole in any soil strata by manual means,collection of soil samples of different strata met with during drilling at various suitable levels, preservation of samples in polythene bags/ sample boxes and disposal of excess soil or mud, including the cost for water etc. as required to maintain the pilot hole properly as per specification and direction of the Engineer-in-charge. i) 100 mm dia

Reaming the pilot hole to an enlarged bore hole in any soil strata by manual means, disposal of excess soil or mud, including the cost for water etc. as required to maintain the pilot hole properly as per specification and direction of the Engineer-in-charge. i) From 100 mm dia pilot hole to 250 mm bore hole

i) 150 mm dia.

ii) 100 mm dia

B. 'RS' pipe. i) 100 mm dia

Providing and fixing of UPVC end cap / well cap suitable for UPVC 'CM' casing or 'CS' casing or 'RS' pipes as per specification and direction of the Engineer - in - charge. i) 100 mm dia

Providing and fixing of UPVC reducer suitable for UPVC 'CM' casing or 'CS' casing or 'RS' pipes as per specification and direction of the Engineer - in - charge. i) 150 x 100 mm dia

Providing and shrouding of the deep tube well assembly with washed pea gravels ( 2.0 - 4.75 mm effective size ) as per specification ( IS : 4097) and direction of the Engineer - in - charge. A) with contractor's rig. i) With pea gravels obtained from Durgapur, West Bengal.

Washing & development of tube well by using hand pump or by any suitable method and testing of tube well as per specification and direction of the Engineer-in-charge.