Upgradation work of CGS Narkeldanga quarter at Phoolbagan area for the year 2026-27. SH: Repair, upgradation and renovation of the external inspection chamber, including development of the adjoining area by brickwork up to plinth level and providing a protective concrete layer to prevent the ingress and movement of rats/insects and the falling of earth/debris into the inspection and manhole chamber for F1, F2, F3.