Talking about the NELAC audits. Last year we went through a horrendous one from a certain state(not naming names) where they found over 500 problems, most of which we did not agree with since we had passed with only a few a year before under another state's auditor. Well after a few months of waiting to hear back from our corrective actions and having to contact them several times we got the word that they were not going to certify us.
The kicker is that a few months later at a conference someone from another lab let it slip that that state was in the process of dropping any out of state certifications. In essence we went through the expense and trouble of the audit when they knew ahead of time that they were not going to certify anyone from another state anyway
Another auditor sent out a finding that our EPA 624 SOP and CCV limits were incorrect. For those we MUST use what is listed in the method. Turns out our limit for passing a CCV was set to +/- 20%, yet in that table many of those analytes have pass/fail criteria of +/- 50% or greater. Funny how we were setting our limits much more stringent but were cited for a violation.
Another was a finding that we did not generate in house limits for surrogate recovery on our NP Pesticides in soil by taking the last 20 analytical runs and doing the statistics. Come to find out in the last year we have only ran ONE soil sample for that test