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Dear Chair,
Our company runs a fleet of trucks for our logging and hauling
business.
Our operations are largely seasonal, some years we get as few as 5
months of operation with our logging organization, but usually
we're a little over 6 months of operation.
When in operation, we use a large number of our company trucks and
owner operator sub-haulers. Most of the trucks are older, ie pre
electonic fuel systems.
We need economical and affordable DPF's that will work on these
older trucks.  Our understanding is that filters 1) Aren't
available for these trucks and 2) And if available, would be very
expensive.
We request a delay in the implementation of these rules until
filters are available that are 1) proven to be effective, 2) are
affordable, ie very inexpensive to purchase and maintain, 3) Can
operate continuously for at least 14 hours per shift without
regeneration.
Sincerely,
Ed Walker