Morels & Apple Orchards

There's a lot of discussion hereabouts (Massachusetts) regarding the safety of eating morels found in old apple orchards, due to the relatively common use of lead-arsenate compounds for pest control in this area in the early 20th century. Since that is the habitat where I'm finding most of the morels I'm seeing, it is an issue of particular relevance to my situation.

Attached is Bill Bakaitis' treatise on the subject, which provides no hard answers but does give one enough information to develop a reasonably well-informed opinion on whether or not to take the risk. Given that the orchard I'm hunting hasn't been in formal production for more than 50 years, and given our topography and general conditions, I'm willing to eat small quantities of morels at a time, and I don't think I'll keel over from arsenic poisoning. I would like to do some testing to see what the fruitbodies may contain, but I guess I'd need one of those cool CSI gas chromatograph devices or something, which I don't have :(