PROVIDING & LAYING 250MM DIA. NP3 CLASS R. C. C. PIPE MAIN DRAINAGE LINE & 150MM DIA. NP2 CLASS CONNECTION LINE FROM MANHOLE TO SIMPLE CHAMBER AND ALSO CONSTRUCTING SIMPLE CHAMBER NEAR HOUSE HOLD ON INTERNAL ROADS OF SAHAJANAND SOCIETY IN TP 26 ( SINGANPOR ), R. S. NO. 22/ 1, FO NO. 21 @ OLD AREA OF NORTH ZONE ( KATARGAM ).