To help you better understand these terms weve provided the following defini tions: Action Level (AL) the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a TEST RESULTS TABLE NAVSTA MAYPORT Radiological ContaminantsContaminant and Unit of Measurement Dates of sampling (mo./yr.) MCL Violation Y/N Level Detected Range of Results MCLG MCL Likely Sourc