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Unread 03-26-2016, 11:34 PM   #2
dhagin
builder, anti-builder, rebuilder -- Retired Moderator
 
Join Date: Mar 2009
Location: oahu
Posts: 13,164
Interesting Fred. Could a test positive for nitrates be from dirt on top of a properly functioning vapor barrier?
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dana

"the road to hell is paved with osb, mastic, pre-mixed latex 'grout' or 'thinset', "
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