25 Pa. Code § 131.3
The following standards apply and, unless otherwise stated, are maximum values that may not be exceeded:
| Concentrations Averaged Over | ||||
| Contaminant | 1-Year | 30-Days | 24-Hours | 1-Hour |
| Settled particulate (total) | .8 mg./cm.2/mo. | 1.5 mg./cm.2/mo. | — | — |
| Beryllium | — | .01 µg./m.3 | — | — |
| Fluorides (total soluble, as HF) | — | — | 5 µg./m.3 | — |
| Hydrogen sulfide | — | — | .005 p.p.m. | .1 p.p.m. |
The provisions of this § 131.3 adopted September 10, 1971, effective September 11, 1971, 1 Pa.B. 1804; amended March 3, 1972, effective March 20, 1972, 2 Pa.B. 383; amended August 12, 1983, effective August 13, 1983, 13 Pa.B. 2478; amended September 4, 1998, effective September 5, 1998, 28 Pa.B. 4525. Immediately preceding text appears at serial pages (233605) to (233606).
This section cited in 25 Pa. Code § 131.2 (relating to National Ambient Air Quality Standards); 25 Pa. Code § 131.4 (relating to application of ambient air quality standards); 25 Pa. Code § 273.217 (relating to air resources protection); 25 Pa. Code § 277.217 (relating to air resources protection); 25 Pa. Code § 283.218 (relating to air resources protection); 25 Pa. Code § 288.217 (relating to air resources protection); 25 Pa. Code § 289.227 (relating to air resources protection); 25 Pa. Code § 290.411 (relating to storage impoundments—operating requirements); and 25 Pa. Code § 297.218 (relating to air resources protection).