Concordat of 1801 - Wikipedia1801 - 1801_First_Luxury_Inn. In The Heart of Downtown Napa. RESERVE NOW. RESERVE NOW. Page updated 4/9/2018. This group includes all classes of positions, the duties of which are to advise on, administer, supervise, or perform investigation, inspection, or enforcement work primarily concerned with alleged or suspected offenses against the laws of the United States, or such work primarily concerned with determining compliance with laws and regulations..