Section NR 415.076 - Particulate matter emission limitations for crushed stone and sand and gravel plants(1) APPLICABILITY. (a) Except as provided in par. (b), the provisions of this section are applicable to the following direct or portable sources in fixed or portable crushed stone and sand and gravel plants: each crusher, screening operation, bucket elevator, belt conveyor or storage bin.(b) Direct or portable sources at the following plants are not subject to the provisions of this section: 1. Fixed sand and gravel plants and fixed crushed stone plants with capacities of 25 tons per hour or less.2. Portable sand and gravel plants and portable crushed stone plants with capacities of 150 tons per hour or less.(2) FUGITIVE DUST CONTROL. No person may cause, allow or permit any crusher, screen, bucket elevator, belt conveyor, storage bin or any transfer point on belt conveyors to be used without taking precautions to prevent particulate matter from becoming airborne. These precautions shall be taken to the extent necessary so that any applicable requirements are met and shall include one or more of the following: (a) Use, where possible, of water, or chemicals approved by the department, for control of dust.(b) Installation and use of hoods, enclosures, buildings, fans and air cleaning devices to enclose and vent the areas where materials are handled.(c) The use of spray bars or other wet dust suppression methods.(d) Any precautions proposed by the owner or operator and accepted by the department.(e) Use of no precautions where control measures are unnecessary due to site or meteorological conditions.Wis. Admin. Code Department of Natural Resources § NR 415.076
Cr. Register, June, 1994, No. 462, eff. 7-1-94.