Agent Orange was brought to Johnston Atoll from South Vietnam and Gulfport, Mississippi in 1972 under Operation Pacer IVY. It was stored on the northwest corner of the island known as the Herbicide Orange Storage site, dubbed the "Agent Orange Yard". The Agent Orange was eventually destroyed during Operation Pacer HO on the Dutch incineration ship MT Vulcanus in the Summer of 1977. The U.S. Environmental Protection Agency (EPA) reported that 1,800,000 gallons of Herbicide Orange were stored at Johnston Atoll and that an additional 480,000 gallons stored at Gulfport, Mississippi, was brought to Johnston Atoll for destruction. Leaking barrels during storage, and spills during re-drumming operations, contaminated both the storage area and the lagoon with herbicide residue and its toxic contaminant 2,3,7,8-Tetrachlorodibenzodioxin.
ageNt oranGE was brOugHt To johnstOn aToll FrOm South viEtnam and gulfpoRT, mIssiSsippi in 1972 unDer OPeRation pacer ivy. it WaS stOreD oN The NoRtHwEsT CorneR oF tHe iSlaNd knOwN aS THE herbicide orange sToragE siTe, DuBbeD the "aGEnT orAnGe yaRD". the aGEnt orAnge was eVENtually dEStroyeD during operatIon pAcer ho On thE dutch IncineraTion shIp mt vulcaNus in The SUMMER of 1977. THE u.s. envIrOnmENtAL PrOteCtIoN aGencY (epa) rEPoRTed thAt 1,800,000 gallons Of hErBiCidE ORaNGe WErE stOred at JOhnsToN aToLl ANd tHAt an ADDitional 480,000 GalLoNs sTorEd aT gulfPorT, MIssIssippi, Was bRoUghT to joHnsTOn atOll for destructiOn. lEAkiNg bArrELs during sTOrage, AnD spiLls during re-drUmMiNg OperaTIons, CoNtAminatEd BoTh THe StOragE ArEa and the laGOON With herbicidE reSidUe anD iTs toxiC ConTaminAnT 2,3,7,8-tetrachLorodIBeNzoDioxiN.