Thought I'd ask this in two threads and get the best answers from the most people ;)
I just completed the training on mold testing and recall that 2 control samples were taken outside (1 windward and 1 leeward). I haven't done any professional tests yet, but while researching what other companies do here in my local market of the Denver Metro area of Colorado, I see that some companies use a SOP of just 1 outdoor control. What am I missing, or are they doing it wrong?
Thanks in advance.