ARM 17.30.1106. EXCLUSIONS

(1) In addition to the exclusions stated in ARM 17.30.1310, the following storm water discharges do not require MPDES permits: (a) point source discharges of storm water to ground water as provided in 75-5-401(5) (g) , MCA; (b) existing or new discharges composed entirely of storm water from oil or gas exploration, production, processing, or treatment operations, or transmission facilities, unless the operation or facility: (i) has had, at any time since November 16, 1987, a discharge of storm water resulting in the discharge of a reportable quantity for which notification is or was required pursuant to 40 CFR 110.6, 40 CFR 117.21 or 40 CFR 302.6; (ii) contributes to a violation of a water quality standard; or (iii) has a storm water discharge associated with construction activity, as defined in this subchapter; (c) existing or new discharges composed entirely of storm water from mining operations, unless the discharge has come into contact with any overburden, raw material, intermediate products, finished products, byproducts or waste products located on the site of such operations.