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25 Pa. Code § 129.64. Cutback asphalt paving.

§ 129.64. Cutback asphalt paving.

 (a)  After April 30, 1982, no person may permit the use or application of cutback asphalt for paving operations except when any of the following applies:

   (1)  Long-life stockpile is necessary.

   (2)  The use or application between October 31 and April 30, is necessary.

   (3)  The cutback asphalt is used solely as a tack coat, a penetrating prime coat, a dust palliative or precoating of aggregate.

   (4)  Skin patching is necessary during October. Skin patching shall be less than 500 feet continuous length, 1300 linear feet per mile or 1750 square yards per lane mile.

 (b)  After April 30, 1982, emulsion asphalts may not contain more than the maximum percentage of solvent as shown in Table 2.

Table 2

Emulsion Grade
Type% Solvent, Max.
Rapid Setting0
Rapid Setting (Anionic)0
Rapid Setting (Cationic)3
Medium Setting12
Medium Setting12
Slow Setting (Soft Residue)0
Slow Setting (Hard Residue)0
Medium Setting (High Float)7
High Float7
Medium Setting (Cationic)8


   The provisions of this §  129.64 issued under section 5 of the Air Pollution Control Act (35 P.S. §  4005).


   The provisions of this §  129.64 adopted April 27, 1979, effective August 1, 1979, 9 Pa.B. 1447; corrected May 11, 1979, effective August 1, 1979, 9 Pa.B. 1534; amended June 19, 1981, effective June 20, 1981, 11 Pa.B. 2118; amended August 12, 1983, effective August 13, 1983, 13 Pa.B. 2478; corrected September 9, 1983, effective August 13, 1983. Immediately preceding text appears at serial pages (62519) to (62520).

Cross References

   This section cited in 25 Pa. Code §  129.51 (relating to general); 25 Pa. Code §  129.54 (relating to seasonal operation of auxiliary incineration equipment); 25 Pa. Code §  129.91 (relating to control of major sources of NOx and VOCs); 25 Pa. Code §  129.96 (relating to applicability); and 25 Pa. Code §  129.111 (relating to applicability).

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