Is anyone clever reading this?

If so, I need help with solving the puzzle in this geocache UC17 (Words). I have had the following extra help from the cache owner:

You are looking for 16 references that appear in chronological order in the text.
The first is in the first line, the last is in the last line.
A majority are single figures but not all.
No further mathematics are required.
There are also two phrases and a phrase transformation (the difficult 7th slot) to find.
You need to put it together in this format.

X XX XXXXXX (Northings)
X XXX XXXXXX (Westings)

You will notice that there are 19 X's there so you need a minor bit of conjuring there.

So with the help of google I found plenty of numbers 'hidden' in the text - trouble is, I have no idea what to do next!