What are the holding times for TO-14A/TO-15?
A. EPA Method TO-15 has a suggested guideline of 30 days. However, the standard turnaround time (TAT) for sample analysis by CAS Air Quality Laboratory is ten business days from the date of the sample receipt by the lab. Samples taken in Tedlar bags must be analyzed within three days of sampling. This is to ensure that sample integrity is maintained.
