17.8.1815 REQUIREMENTS FOR ASPHALT PLANTS
(1) An owner or operator of an asphalt plant required to register under this subchapter:
(a) shall limit particulate matter emissions to no more than:
(i) 0.04 grains per dry standard cubic foot; or
(ii) 0.10 grains per dry standard cubic foot, for a facility that holds a valid MAQP containing this limit at the time of registration;
(b) shall control emissions from each dryer or mixer at all times during operation using control equipment capable of achieving the applicable emission limit;
(c) shall shut down an emitting unit using a baghouse control device needing a bag replacement until the replacement bag is installed;
(d) shall install and maintain a device to measure the pressure drop on the control device, such as a magnehelic gauge or manometer. The pressure drop must be measured in inches of water and recorded daily; and
(e) shall install and maintain temperature indicators at the control device inlet and outlet; and
(f) may not allow the asphalt production rate to exceed the average production rate during the last source test demonstrating compliance. The owner or operator may retest at a higher production rate at any time.
(2) Records made and maintained under ARM 17.8.1811 must include daily pressure drop readings from the control device and the daily water input rate or the water input pressure, if applicable.
History: 75-2-111, 75-2-234, MCA; IMP, 75-2-234, MCA; NEW, 2019 MAR p. 425, Eff. 4/27/19.