本出版物中的推荐做法仅限于安装和测试位于零售、商业和政府车辆加油设施的第一阶段和第二阶段汽车燃油蒸汽回收系统。这些设施的储罐可能位于地下或地上。本文件不涉及码头或散装工厂蒸汽回收系统的安装或测试相关实践，也不涉及码头或飞机加油设施。

The recommended practices in this publication are limited to those relating to the installation and testing of Stage I and Stage II motor fuel vapor-recovery systems located at retail, commercial, and government vehicle-fueling facilities. The storage tanks at these facilities may be located underground or aboveground. This document does not address practices associated with the installation or testing of vapor-recovery systems at terminals or bulk plants, nor does it address marina- or aircreaft-fueling facilities.