At Zone No. 7 ( B ); Maintenance and repair of staff quarters, service building, drains etc.: All works in the area from Mahanadi at KM 42/ 0 ( excluding ) to Darjeeling at KM 79/ 6 ( including ) all assets of Darjeeling under SSE/ W/ KGN from 1. 07. 2024 and upto P. E 30. 6. 2026.