[swores]

I wonder (and maybe someone here will know) whether that means they were foolishly cutting corners and should have sampled further than 100ft down, or if what they did was considered best practise and they were just unlucky to find themselves in a freak situation?

[bombcar]

Likely the second - they usually base drilling depth on the known area and a wide margin, so everyone probably thought 75 feet was fine, do a hundred to be safe.

[swores]

Thanks