Methods are adequate for monitoring. Methods are adequate for monitoring. Methods are adequate for monitoring. In validation process EPA is currently conducting analytical methods development to support the analyses of perchlorate. This new method will be based on the currently available ion chromatography methods, but will include a criteria detailing when a laboratory must perform a sample clean- up procedure to minimize the impact of elevated concentrations of chloride, sulfate or other dissolved solids.
Methods are adequate for monitoring.
Some methods evaluated but inadequate for monitoring. Priority for analytical method development. EPA anticipates that contaminant will be added to the scope of EPA Method 525.2. EPA Method 552 evaluated but subject to false positives from interferences of the derivitized byproduct of the contaminant. EPA Method 552 evaluated but subject to quantitative uncertainty due to inadequate derivatization of the contaminant.