No person shall emit into the atmosphere in any one hour from any source, except those specific types of sources to which emission standards elsewhere in these rules and regulations apply, particulate matter in excess of that shown in the following table opposite the applicable process weight. In entering the table "the process weight rate" will be determined by dividing the total process weight by the number of hours in one complete operation, excluding anytime during which the equipment is not operating.
250 R.I. Code R. 250-RICR-120-05-3.6