25 Pa. Code § 129.17
(a) A person may not cause or permit the emission into the outdoor atmosphere of total reduced sulfur from kraft pulp mills in excess of the quantities in the following table:
| PPM (VOLUME) DRY | CONDITION | |
| Recovery furnace—old design (without welded wall or membrane wall construction or emission-control designed air systems) | 20 | 12 hour average—corrected to 8% oxygen by volume. |
| Recovery furnace—new design (with both welded wall or membrane wall construction or emission-control designed air systems) | 5 | 12 hour average—corrected to 8% oxygen by volume. |
| Lime kiln (a rotary or fluosolid unit used to calcine calcium carbonate into calcium oxide) | 20 | Never to be exceeded— corrected to 10% oxygen by volume. |
| Digester systems (continuous or batch process for cooking wood chips in sodium hydroxide and sodium sulfide to produce cellulosic material) | 5 | Never to be exceeded. |
| Multiple effect evaporator system (vapor heads, heating elements, hot wells, condensers and associated equipment used to concentrate spent pulp mill cooking liquid) | 5 | Never to be exceeded. |
| Smelt dissolving tank (the vessel used to produce an aqueous solution from the molten mixture discharged from the floor of a recovery furnace) | 20 | Never to be exceeded. |
(b) Total reduced sulfur emissions shall be monitored continuously at recovery furnaces, digester systems and multiple effect evaporator systems unless emissions are incinerated at 1,200°F for .5 seconds or incinerated to provide equivalent total reduced sulfur control.
(c) Compliance with subsection (a) shall be achieved in accordance with the following schedule:
| MONTHS AFTER MAY 7, 1988 | ||
| ACTIVITY | EXISTING SOURCES | RECOVERY |
| FURNACE | ||
| (NEW SOURCE) | ||
| Submit for Department approval a plan for achieving compliance | 6 | 6 |
| Submit for Department approval a plan of necessary equipment | 12 | 24 |
| Issue purchase orders | 24 | 36 |
| Achieve compliance | 36 | 72 |
The provisions of this § 129.17 issued under section 5 of the Air Pollution Control Act (35 P.S. § 4005).
The provisions of this § 129.17 adopted May 6, 1988, effective May 7, 1988, 18 Pa.B. 2102; amended October 26, 1990, effective October 27, 1990, 20 Pa.B. 5416; amended August 2, 1991, effective August 3, 1991, 21 Pa.B. 3406. Immediately preceding text appears at serial pages (151662) to (151663).