Q851. My aggregation of units/common pipe configuration only contains a few units with a maximum rated heat input capacity ≥ 10 million British thermal units per hour (mmbtu/hr).  What should be entered for cumulative maximum rated heat input capacity of the aggregated units?  If I only enter the heat input capacity for those units ≥ 10, I receive a data validation error regarding potential-to-emit.

A851. You should sum only the capacity for those units with a maximum rated heat input capacity ≥ 10 and enter the summation as the cumulative maximum rated heat input capacity for the aggregation/common pipe configuration.

...