§ 157.12. Measurement tolerances.

 (a)  Factors. Measurement tolerances shall be allowed to take into account the effects of the following factors:

   (1)  The consensus standard practice of reporting field sound level measurements to the nearest whole decibel.

   (2)  Variations resulting from commercial instrument tolerances.

   (3)  Variations resulting from the topography of the noise measurement site.

   (4)  Variations resulting from atmospheric conditions such as wind, ambient temperature, and atmospheric pressure.

   (5)  Variations resulting from reflected sound from small objects allowed within the test site.

   (6)  The interpretation of the above cited factors by enforcement personnel.

 (b)  Limitations. Measurement tolerances shall not exceed two decibels for a given measurement.

---

No part of the information on this site may be reproduced for profit or sold for profit.

This material has been drawn directly from the official Pennsylvania Code full text database. Due to the limitations of HTML or differences in display capabilities of different browsers, this version may differ slightly from the official printed version.