Respondent failed to properly manage hazardous waste generated and temporarily accumulated on site, including failing to properly label and mark with the accumulation start date containers holding hazardous waste and failing to keep hazardous waste containers closed during storage except when necessary to add or remove waste. Respondent also mismanaged universal waste lamps by failing to store such lamps in containers that were closed, labeled properly, and marked with the accumulation start date. Finally, Respondent failed to maintain the required copies of hazardous waste manifests after they were signed by the designated TSDF indicating that the hazardous waste which had been shipped offsite had arrived at its final destination.