1 min readEnvironmental Aspects of External Tank Contract, NAS8-36200OIG CommunicationsSep 24, 1999 Article September 24, 1999 Download Report Environmental Aspects of External Tank Contract, NAS8-36200 (IG-99-051) PDF (262.81 KB) Share Details Last Updated Sep 28, 2026 Related TermsAudit ReportsFY1999