bids are invited for custom bid for services - operation maintenance of hazardous waste storage facility as per scope of work , custom bid for services - consultancy services for getting the statutory approvals and other related purposes as per sow , custom bid for services - providing service for measurement of voc at various points in the refinery complex as per the scope of work of the ldar program , custom bid for services - providing service for measurement of valve passing leak detection at various points in the lines routed to flare header as per the scope of work of the ldar program , custom bid for services - providing service for measurement of benzene at various points in the refinery complex as per the scope of work of the ldar program , custom bid for services - providing services for the measurement of hourly sound levels with approved sound level meter slm as per sow , custom bid for services - providing services for the measurement of sound level with approved sound level meter slm as per sow , custom bid for services - providing services for the measurement of sound level with approved sound level meter slm in the refinery process units as per sow , custom bid for services - monitoring of physical hazards , custom bid for services - monitoring of chemical hazards as per oisd gdn 166 and second schedule as per sow , custom bid for services - monitoring of ergonomic hazards as per sow , custom bid for services - psychological hazards as per sow