relaying of sewerlines for type-i ii and iii quarters from qtr. no. 1139 to 1144 1151 to 1170 1295 to 1310 1409 to 1416 1463 to 1468 1421 to 1432 and 2124 to 2149 at audit pool colony sector-41b chandigarh and repair and rehabilitation of rcc balconies projected slabs and chajjas of left over residential building of audit pool colony at sector-41 chandigarh sh hiring of inspection vehicle.