14.60.320 Maximum daily concentration allowed.
Unless otherwise provided in this chapter, the maximum daily allowable concentration for all industrial users, including both categorical and noncategorical industrial users is violated under the following circumstances:
A. The arithmetic mean of concentrations for eight consecutive samples collected within a 24-hour time period over intervals of 15 minutes or greater is in excess of the limitation.
B. The concentration value obtained from a composite sample that is representative of the 24-hour discharge is in excess of the limitation.
C. The concentration of any single sample (whether as single grab sample or a sample within a series) exclusive of any fats, oils, and grease exceeds the limitation by a factor of two and one-half times.
D. The arithmetic mean of the concentration of fats, oils, or greases for three grab samples, taken no more frequently than at five-minute intervals, exceeds the limitation. (Ord. 3220 § 2, 2016; Ord. 2742 § 2, 2008; Ord. 2031 § 10, 1995; Ord. 1705, 1989. Formerly 14.60.611)