24 out of 26 pages are tiles.
They are very nicely done.
I like the water effect, and the gravel effect in the background.
I submitted a scenario for Age of Shadows on the Age of shadow wiki recently, which was based in a sewer system.
This was then stated on Google Plus, which Mr Richards is also on.
Half hour later, I see him put a sewer tile sample on Goggle+ for me to look at and get an opinion.
I and one or two others agreed on the other samples he made for me for the AoS sewer scenario.
And now; this Expansion set 3 looks just great for the AoS sewer scenario.
All I can say is, well done. Very nicely done indeed.
A page of 'tokens' for sewer rubbish would have been nice.