I believe that the 2009 lift truck emissions standards only apllies to truck produced in 2009 possiply for Califrnia it may apply to trucks shipped into the state.

But what you greater concern would be is teh emmission levels inside your building OSHA and CALOSHA have specific standards that must be meet. Just a guess those early 1980 units are probably not the cleanest running forklifts and are emptying you pocket with repairs.

What you might want to consider is switch to electrics, finance them to own for 6 - 7 years. The monthly payments would be very reasonable and your repairs costs would go away (except for abuse) for 1 -2 years (warrranty coverage), your fuel costs would be significantly lower. Your in plant emissions is a non issue. Plus, I believe CA offers tax incentives to companies that switch from propane to electric.

Talke to your local dealer and explore your options.