7 Del. Admin. Code § 1105
No person shall cause or allow particulate emissions into the atmosphere from any source not provided for in subsequent sections of this regulation in excess of 0.2 grains per standard cubic foot.
3.1 No person shall cause or allow particulate emissions from a hot mix asphalt batching plant into the atmosphere in excess of the quantity as listed in Table 3-1 of this regulation.
Table 3-1
Allowable Mass Emission Rate From Hot Mix Asphalt Batching Operation
| Process Weight Rate (Pounds Per Hour) | Stack Emission Rate (Pounds Per Hour) | |
| 10,000 20,000 30,000 40,000 50,000 100,000 200,000 300,000 400,000 500,000 600,000 | 10 16 22 28 31 33 37 40 43 47 50 |
4.1 No person shall cause or allow particulate emissions from secondary metal operations into the atmosphere in excess of the quantity as listed in Table 4-1 of this regulation.
Table 4-1
Allowable Mass Emission Rate From Secondary Metal Operations
| Process Weight Rate (Pounds per Hour) | Stack Emission Rate (Pounds per Hour) |
| 1,000 | 0.75 |
| 2,000 | 1.50 |
| 3,000 | 2.25 |
| 4,000 | 3.00 |
| 5,000 | 3.75 |
| 6,000 | 4.50 |
| 7,000 | 5.25 |
| 8,000 | 6.00 |
| 9,000 | 6.75 |
| 10,000 | 7.50 |
| 12,000 | 9.00 |
| 16,000 | 12.00 |
| 18,000 | 13.50 |
| 20,000 | 15.00 |
| 30,000 | 22.50 |
| 40,000 | 30.00 |
| 50,000 | 37.50 |
5.1 No person shall cause or allow particulate emissions from catalytic cracking operations into the atmosphere in excess of the quantities as indicated in Table 5-1 of this regulation. For the purpose of interpolation and extrapolation calculations, "Coke Burn-Off Rate" shall be construed to be equivalent to "Process Weight Rate."
Table 5-1
Allowable Mass Emission Rate From Catalytic Cracking Operations
| Coke Burn-Off Rate (Pounds per Hour) | Mass Emission Rate (Pounds per Hour) |
| 7,000 | 50 |
| 14,000 | 100 |
| 21,000 | 150 |
| 28,000 | 200 |
| 42,000 | 300 |
| 56,000 | 400 |
| 70,000 | 500 |
5.2 No person shall cause or allow particulate emissions from fluid coking operations into the atmosphere in excess of the quantities as indicated in Table 5-2 of this regulation.
Table 5-2
Allowable Mass Emission Rate From Fluid Coking Operations
| Process Weight Rate (Barrels per Day of Fresh Feed) | Mass Emission Rate (Pounds per Hour) |
| 5,000 | 15 |
| 10,000 | 30 |
| 15,000 | 50 |
| 20,000 | 80 |
| 30,000 | 100 |
| 40,000 | 125 |
| 50,000 | 150 |
6.1 No person shall cause or allow particulate emissions from prilling operations into the atmosphere in excess of the quantities as indicated in Table 6-1 of this regulation.
Table 6-1
Allowable Mass Emissions Rate From Prilling Operations
| Process Weight Rate (Pounds per Hour) | Mass Emission Rate (Pounds per Hour) |
| 5,000 | 25 |
| 10,000 | 50 |
| 15,000 | 75 |
| 20,000 | 100 |
| 25,000 | 125 |
| 50,000 | 250 |
| 75,000 | 375 |
| 100,000 | 500 |
Persons responsible for a source operation from which potentially hazardous particulate matter may be emitted such as, but not limited to, lead, arsenic, beryllium, silica, asbestos, and other such materials shall list such contaminants and their exit concentrations in a written report to the Department. The Department shall assign emission limits on an individual basis.