Section 58.01.02.283 - SPOKANE RIVER, SUBSECTION 110.12, HUC 17010305, UNITS P-3 AND P-4, SITE-SPECIFIC CRITERIA FOR AMMONIAThe following criteria are to be met dependent upon the temperature, T (degrees C), and pH of the water body:
01.Acute Criterion (Criterion Maximum Concentration (CMC)). The one (1) hour average concentration of total ammonia nitrogen (in mg N/L) is not to exceed, more than once every three (3) years, the value calculated using the following equation: Click here to view image
02.Chronic Criterion (Criterion Continuous Concentration (CCC)). a. The thirty (30) day average concentration of total ammonia nitrogen (in mg N/L) is not to exceed, more than once every three (3) years, the value calculated using the following equation: Click here to view image
b. The highest four (4) day average within the thirty (30) day period should not exceed two and five tenths (2.5) times the CCC.Idaho Admin. Code r. 58.01.02.283