With this action, EPA is allocating essential use allowances for import and production of class I stratospheric ozone depleting substances (ODSs) for calendar year 2004. Essential use allowances enable a person to obtain controlled class I ODSs as an exemption to the regulatory ban of production and import of these chemicals, which became effective on January 1, 1996. EPA allocates essential use allowances for exempted production or import of a specific quantity of class I ODS solely for the designated essential purpose. The allocations total 2077.91 metric tons of chlorofluorocarbons for use in metered dose inhalers. EPA is also allocating the remaining allowances for methyl chloroform (141.877 metric tons) to the U.S. Space Shuttle Program.