Smog and Engine Size Question

[Robert J Donahue/DELCO <RJDONAHU@mail.delcoelect.com>]

With all the smog discussion lately, maybe someone can clear up
an on going argument here at work. If I understand it correctly,
emission pollutants are measured as a percent of the exhaust gas.
Does this mean that a 5 liter engine is allowed to produce
5 times as much pollutants (in absolute quantity) as a one liter engine?
I am making the assumption that the exhaust volume is related to
the engine displacement.

Bob Donahue, Still Stuck in the '50s
53 MG-TD, under DIY restoration
71 MGB, still in the shop 10 months and counting