Experience and Expertise:    50 Years Combined Relevant Experience     Held Senior Positions in Various U.S. Government Agencies     Expertise in Environmental, Health, Energy, and Natural Resources Policy		The principals at Environomics are Stuart Sessions and Irving Susel.  They bring to the firm over 50 years of experience in analyzing environmental, health, energy, and natural resource policy issues.   Each has consulted in this area for more than a decade and each has been a senior U.S. government official responsible for managing the analysis of environmental regulatory issues.    In recent years, the principals have extended their broad experience with environmental analysis in the U.S. to assistance for donor agencies and foreign governments.