Over
the past years a struggle has evolved over the “correct” method
to utilize when performing environmental testing. These methods
have been maintained and published by several organizations
both governmental and secular. Last year, EPA decided that
they were not going to maintain a select number of methods
any longer. These methods became “unapproved”.
What did this mean to the laboratories? Were the end users
in the discussion loop? What methods are filling the gap?
Where did these methods come from? It is imperative that
everyone from the sampler to the regulator understand some
of the discreet differences between the old and the new methods.
The Method Update rule became effective April 13, 2007 and
has changed the way environmental testing is done for the
first time in many years.
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