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 Washington Administrative Code (Last Updated: November 23, 2016)
 Title 173. Ecology, Department of (See Titles 197, 317, 372, and 508)
 Chapter 173-481. Ambient air quality and environmental standards for fluorides.

  Section 173-481-100. Forage standards.  

Latest version.
  • (1) All sampling to determine compliance with these standards shall be conducted in locations and during time periods consistent with protecting livestock.
    (2) The fluoride content of forage calculated by dry weight shall not exceed:
    (a) Forty parts per million fluoride ion (40 ppm F-) average for the growing season.
    (b) Sixty parts per million fluoride ion (60 ppm F-) each month for more than two consecutive months during the growing season.
    (c) Eighty parts per million fluoride ion (80 ppm F-) more than once in any two consecutive months during the growing season.
    [Statutory Authority: RCW 70.94.395 and 70.94.331. WSR 05-17-169 (Order 05-07), § 173-481-100, filed 8/23/05, effective 9/23/05. Statutory Authority: Chapter 70.94 RCW. WSR 87-19-073 (Order 87-21), § 173-481-100, filed 9/16/87.]
RCW 70.94.395 and 70.94.331. WSR 05-17-169 (Order 05-07), § 173-481-100, filed 8/23/05, effective 9/23/05. Statutory Authority: Chapter 70.94 RCW. WSR 87-19-073 (Order 87-21), § 173-481-100, filed 9/16/87.