The American Society for Testing and Materials (ASTM) is one of the largest voluntary standards development organizations in the world-a trusted source for technical standards for materials, products, systems, and services.

Oregon Department of Environmental Quality (DEQ) Noise Regulations

DEQ Tables referred to in Noise Regulations:

[Table 1] [Table 2] [Table 3] [Table 4] [Table 5&6] [Table 7&8] [Table 9&10]

The American National Standards Institute (ANSI) is a private, non-profit organization (501(c)3) that administers and coordinates the U.S. voluntary standardization and conformity assessment system.

The International Organization for Standardization (ISO) is a network of the national standards institutes of 148 countries, on the basis of one member per country, with a Central Secretariat in Geneva, Switzerland, that coordinates the system.