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17.30.652    E-1 CLASSIFICATION STANDARDS

(1) Waters classified E-1 are to be maintained suitable for agricultural purposes, secondary contact recreation and wildlife.

(2) No person may violate the following specific water quality standards for waters classified E-1:

(a) the designated uses of a receiving water body under a different classification must be fully maintained;

(b) the geometric mean number of Escherichia coli bacteria may not exceed 630 colony forming units per 100 milliliters and 10% of the samples may not exceed 1,260 colony forming units per 100 milliliters during any 30-day period.

(3) The narrative standards in ARM 17.30.637(1) (d) and (2) that pertain to aquatic life do not apply.

History: 75-5-301, MCA; IMP, 75-5-301, MCA; NEW, 2002 MAR p. 2196, Eff. 8/16/02; AMD, 2006 MAR p. 528, Eff. 2/24/06.

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