(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; or
(ii) contributes to a violation of a water quality standard;
(c) existing or new discharges of storm water runoff from mining operations, from oil and gas exploration, production, processing, treatment operations, or transmission facilities, if such existing or new discharges are composed entirely of flows which are from conveyances or systems of conveyances including, but not limited to, pipes, conduits, ditches, and channels, used for collection and conveying precipitation runoff and which have not come into contact with any overburden, raw material, intermediate products, finished product, byproduct, or waste products located on the site of such operation. For purposes of this rule only, "oil and gas exploration, production, processing, treatment operations or transmission facilities" means all field activities or operations associated with exploration, production, processing, or treatment operations or transmission facilities, including activities necessary to prepare a site for drilling and for the movement and placement of drilling equipment, whether or not such field activities or operations may be considered to be construction activity.
History: 75-5-201, 75-5-401, MCA; IMP, 75-5-401, MCA; NEW, 2003 MAR p. 219, Eff. 2/14/03; AMD, 2014 MAR p. 3056, Eff. 12/25/14.