> You know as well as I that a couple of samples don't constitute a basis
for generalizations.

That's why I said "This is a full pesticide run by the USDA...  I have a
stack of these."
A "stack" is a reasonable basis for generalization, as is an ongoing program
of sampling/testing.

> my Science 1985 paper regarding monitoring in the Puget Sound area...

In 1985, NYC, like most cities, had air you could cut with a knife.  Anyone
who drives up I-95 and happens to be coming up through Delaware as dawn
breaks can see that the reddish-orange haze to the northeast, the smog from
NYC, is gone.  I used to be able to see it as far south as the DE/MD border.
Things are better now, much better.

> We found over 200 volatile and semi-volatile chemicals inside beehives

But if the USDA bothers to run a test lab for food, I'm going to conclude
that their tests are "authoritative", and that they will read the all
papers, and decide what the state-of-the-art needs to be every year.  I am
sure they read everything you cited, and as I sold my HPLC/MS years ago, I'm
going to take their word for it on the appropriate nature of their tests in
determining food purity.

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