Have you asked other shelter workers?
Try alt.med.veterinary. I know many volunteers and industry workers post
there.
Killfile Jerry (puppy wizard) before even bothering with him, though, if
he's over there. *eg*

I suggest you take a look at the Shelter Vet site at UC Davis for a
recommendation as to how many exchanges per hour is optimal for the size
building you are considering. E-mail Kate Hurley if you need to. She'll
respond, even if it takes a while. You'll also want to consider airflow
direction and filtration as well as exchange.  A separate quarrantine area
with a separately supplied and filtered air, or preferabley several
quarrantine areas with separate supplied air for each. Once you have the
specs you need, any competent HVAC company that has dealt with hospital or
medical facilities can design the system.  Expect it to be EXPENSIVE.  In
our tiny little shelter, we've spent over 12K for heating and cooling, and
it's not even really done properly because we don't own the building and
can't force the City to comply with our recommendations.