If you operate a hardwood veneer dryer, you must record the annual volume percentage of softwood veneer species processed in the dryer as follows:
Where:
SW% = annual volume percent softwood species dried;
SW = softwood veneer dried during the previous 12 months, thousand square feet (3/8-inch basis);
T = total softwood and hardwood veneer dried during the previous 12 months, thousand square feet (3/8-inch basis).
40 C.F.R. §63.2264