Best Answer nwilson, 23 May 2019 - 07:28 PM
I would assume this would be referencing vectoring, however I would not apply this to an ATP scenario, as ATP is more for sanitation verification than micro-organism detection. This would be more for say, listeria showing up in a drain and swabbing outward from the drain to see how wide spread the contamination is.
Did this auditor specifically make this call out to the ATP Program? This also depends on your process (product risk) and how the program is laid out.