Details: hand washing drilling and boring 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 of 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 bore hole properly as per specification and direction of the engineer-in-charge. i) from 100 mm dia pilot hole to 300 mm bore hole. providing 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 fixing of upvc reducer suitable for upvc 'cm' c
Sector: Water supply and Sewerage