These annually determined MDLs were

These annually determined MDLs were generally
higher than the initial MDLs. In order to compare data from samples
analyzed in different years, all datawere censored using the highest of the
MDLs determined for each compound (Table 1). Detections reported by
theNWQLwith concentrations less than the selectedMDLare reported as
bMDL in this study and are not considered detections when calculating
detection frequencies.