The Minerals Management Service (MMS) mandated that offshore operators in the Gulf of Mexico participate in an annual survey program for the years 2000 and 2005. Starting in 2000, MMS collected information regarding offshore operations. The purpose of the survey was to assist the MMS in constructing an emission inventory for the entire Gulf of Mexico. For the 2000 and 2005 inventory efforts, MMS Gulfwide Offshore Activities Data System (GOADS-2000) software and GOADS-2005 software were provided in order to assist offshore operators in complying with the MMS mandate. The GOADS software assists users in recording information regarding emissions-related offshore activities and generates computer data files that can be delivered to the MMS. For the 2008 inventory effort, improvements have been made to the software; the new version is GOADS-2008. The GOADS-2008 software will be used to record information regarding emissions-related offshore activities for calendar year 2008.