Chapter NR 415

NR 415.05(1)(i) (i) Asphalt, concrete or aggregate mix plants: 0.30 pounds of particulate matter per 1,000 pounds of gas.

NR 415.05(1)(j) (j) Cement kilns: 0.20 pounds of particulate matter per 1,000 pounds of gas.

NR 415.05(1)(k) (k) Lime kilns: 0.20 pounds of particulate matter per 1,000 pounds of gas.

NR 415.05(1)(L) (L) Cement klinker coolers: 0.30 pounds of particulate matter per 1,000 pounds of gas.

NR 415.05(1)(m) (m) Grinding, drying, mixing, conveying, sizing or blending: 0.20 pounds of particulate matter per 1,000 pounds of gas.

NR 415.05(1)(n) (n) Grain processing or handling: 0.40 pounds of particulate matter per 1,000 pounds of gas.

NR 415.05(1)(o) (o) Any other process not enumerated: 0.40 pounds of particulate matter per 1,000 pounds of gas.

NR 415.05(2) (2) All direct and portable sources on which construction or modification is commenced after April 1, 1972 shall meet the emission limitations of this subsection. The allowable emissions of particulate matter are calculated by the use of the equation

for process weight rates up to 60,000 pounds per hour and by use of the equation

for process weight rates of 60,000 pounds per hour or more, where E is the allowable emissions in pounds per hour and P is the process weight rate in tons per hour. If the calculated emission rate is less restrictive than the applicable concentration specified under sub. (1) based on the maximum exhaust flow rate and normal exhaust gas temperature, the limitation under sub. (1) shall apply.

NR 415.05 Note Note: Some examples of these calculations are given in the following table.

- See PDF for table

NR 415.05(3) (3) In addition to meeting the requirements of subs. (1) and (2), any direct or portable source located in or near an area identified in s. NR 415.035 (2) whose aggregate particulate emissions, excluding fugitive dust, may cause an impact on the ambient air quality in the areas equal to or greater than an annual concentration of one microgram per cubic meter or a maximum 24-hour concentration of 5 micrograms per cubic meter shall meet the following RACT emission limitations:

NR 415.05(3)(a) (a) Sources on which construction or modification was commenced on or before April 1, 1972 may not emit more than 0.20 pounds of particulate matter per 1000 pounds of exhaust gas.

NR 415.05(3)(b) (b) Sources on which construction or modification was commenced after April 1, 1972 may not emit more than the emissions limits of sub. (2) or 0.20 pounds of particulate matter per 1000 pounds of exhaust gas, whichever is more restrictive.

NR 415.05(4) (4) Notwithstanding sub. (3), any cupola may emit up to, but not more than 0.25 pounds of particulate matter per 1000 pounds of exhaust gas.

NR 415.05 History History: Renum. from NR 154.11 (3) and am. Register, September, 1986, No. 369, eff. 10-1-86; correction in (2) (a) 1. made under s. 13.93 (2m) (b) 7., Stats., Register, April, 1989; am. (intro.), (1) (b) to (o), (2) (a) (intro.) and 1., (3) (b), (5) (intro.), r. (2) (a) 2. and 3., (b), Register, May, 1992, No. 437, eff. 6-1-92; am. (2), Register, December, 1995, No. 480, eff. 1-1-96; CR 01-002: am. (3) (intro.), r. (5), Register, October 2001 No. 550, eff. 11-1-01.

NR 415.06 NR 415.06 Particulate matter emission limits for fuel burning installations. No person may cause, allow or permit the emission of particulate matter to the ambient air from any indirect heat exchanger, power or heating plant, fuel-burning installation or pulp recovery furnace with maximum heat input more than one million Btu per hour in excess of one of the following limitations:

NR 415.06(1) (1) All installations on which construction or modification was commenced on or before April 1, 1972 shall meet the emission limitations of this subsection:

NR 415.06(1)(a) (a) All installations shall meet the emission limitation of 0.60 pounds of particulate matter from any stack per million Btu heat input.

NR 415.06(1)(b) (b) Installations located in subregion 1 of the Lake Michigan Intrastate AQCR shall meet the emission limitation of 0.30 pounds of particulate matter from any stack per million Btu heat input.

NR 415.06(1)(c) (c) Installations located in the Southeastern Wisconsin Intrastate AQCR shall meet the following requirements:

NR 415.06(1)(c)1. 1. Installations of 250 million Btu per hour or less: maximum emission defined by the equation

where I is heat input in millions of Btu per hour and E is maximum allowable particulate matter emissions from any stack in pounds per million Btu heat input.

NR 415.06(1)(c)2. 2. Installations of more than 250 million Btu per hour: maximum emission from any stack of 0.15 pounds of particulate matter per million Btu heat input.

NR 415.06(2) (2) All installations on which construction or modification is commenced after April 1, 1972 shall meet the emission limitations of this subsection:

NR 415.06(2)(a) (a) Installations of 250 million Btu per hour or less except as provided in par. (b): maximum emission from any stack of 0.15 pounds of particulate matter per million Btu heat input.

NR 415.06(2)(b) (b) Installations of 100 million Btu per hour or less which are not located in the Southeastern Wisconsin Intrastate AQCR and which burn only wood, or wood simultaneously with liquid or gaseous fossil fuel: maximum emission from any stack of 0.50 pounds of particulate matter per million Btu heat input except that installations located in subregion 1 of the Lake Michigan Intrastate AQCR shall meet the requirements of sub. (1) (b).

NR 415.06(2)(c) (c) Installations of more than 250 million Btu per hour: maximum emission from any stack of 0.10 pounds of particulate matter per million Btu heat input.

NR 415.06(3) (3) In addition to meeting the requirements of sub. (1) or (2), all installations located in or near an area identified in s. NR 415.035 (2) whose aggregate particulate emissions, excluding fugitive dust, may cause an impact on the ambient air quality in the areas equal to or greater than an annual concentration of one microgram per cubic meter or a maximum 24-hour concentration of 5 micrograms per cubic meter shall meet the following RACT emission limitations:

NR 415.06(3)(a) (a) Installations of 100 million Btu per hour or less: maximum emission from any stack of 0.24 pounds of particulate matter per million Btu heat input.

NR 415.06(3)(b) (b) Installations of more than 100 million Btu per hour on which construction or modification commenced on or before April 1, 1972: maximum emission from any stack of 0.15 pounds of particulate matter per million Btu heat input.

NR 415.06(3)(c) (c) Installations of more than 100 million Btu per hour but of not more than 250 million Btu on which construction or modification commenced after April 1, 1972: maximum emission from any stack of 0.15 pounds of particulate matter per million Btu heat input.

NR 415.06(3)(d) (d) Installations of more than 250 million Btu per hour on which construction or modification commenced after April 1, 1972: maximum emission from any stack of 0.10 pounds of particulate matter per million Btu heat input.

NR 415.06(4) (4) Notwithstanding sub. (3) (a) or (b), any fuel burning installation of 250 million Btu per hour or less on which construction or modification was commenced on or before April 1, 1972 may emit up to, but not more than, an emission rate defined by the equation

where I is the heat input in millions of Btu per hour and E is the maximum allowable particulate matter emissions from any stack in pounds per million Btu heat input, if the installation has an emission rate based on original design or equipment performance test conditions, whichever is more restrictive, which is less than the limit set by the above equation, and the emission control system of the installations has not been allowed to degrade more than 0.05 pound per million Btu heat input from original design or acceptance performance test conditions.

NR 415.06 History History: Renum. from NR 154.11 (4) and am. Register, September, 1986, No. 369, eff. 10-1-86; correction in (2) (b) made under s. 13.93 (2m) (b) 7., Stats., Register, April, 1989; am. (intro.), (1) (a), (b), (c) 1. and 2., (2) (a) to (c), (3) (a) to (d) and (4), Register, May, 1992, No. 437, eff. 6-1-92; am. (1) (a), (b), (c) (intro.), 1., Register, February, 1995, No. 470, eff. 3-1-95; am. (1) (c) 1. and (4), Register, October, 1999, No. 526, eff. 11-1-99; CR 01-002: am. (3) (intro.) and (4), r. (5), Register October 2001 No. 550, eff. 11-1-01.

NR 415.07 NR 415.07 Particulate matter emission limits for incinerators. No person may cause, allow or permit particulate matter, concentrations corrected to 12% carbon dioxide, to be emitted to the ambient air from any incinerator in excess of one of the following limitations:

NR 415.07(1) (1) All incinerators on which construction or modification was commenced on or before April 1, 1972 shall meet the emission limits of this subsection.

NR 415.07(1)(a) (a) Incinerators located throughout the state; emissions of:

NR 415.07(1)(a)1. 1. Incinerators rated at over 500 pounds of waste per hour: 0.50 pounds of particulate per 1,000 pounds of exhaust gas.

NR 415.07(1)(a)2. 2. Incinerators rated at 500 pounds of waste per hour or less: 0.60 pounds of particulate per 1,000 pounds of exhaust gas.

NR 415.07(1)(b) (b) Incinerators located in subregion 1 of the Lake Michigan Intrastate AQCR or in the Southeastern Wisconsin Intrastate AQCR; in addition to meeting the emission limits of par. (a) these incinerators shall meet the following emission limits:

NR 415.07(1)(b)1. 1. Incinerators of 5 cubic feet capacity or more: 0.30 pounds of particulate per 1,000 pounds of exhaust gas.

NR 415.07(1)(b)2. 2. Prefabricated domestic incinerators below 5 cubic feet capacity may not exceed the performance emission requirements prescribed by the American National Standards Institute for domestic incinerators, standard Z21.6, incorporated by reference in s. NR 484.11 (3).

NR 415.07(2) (2) All incinerators on which construction or modification is commenced after April 1, 1972 shall meet the emission limits of this subsection.

NR 415.07(2)(a) (a) Incinerators other than those specified in par. (b); emissions in excess of:

NR 415.07(2)(a)1. 1. Incinerators rated at 4,000 pounds of waste per hour or more: 0.15 pounds of particulate per 1,000 pounds of exhaust gas.

NR 415.07(2)(a)2. 2. Incinerators rated at over 500 pounds of waste per hour and less than 4,000 pounds of waste per hour: 0.20 pounds of particulate per 1,000 pounds of exhaust gas.

NR 415.07(2)(a)3. 3. Incinerators rated at 500 pounds of waste per hour or less other than prefabricated domestic incinerators below 5 cubic feet capacity: 0.30 pounds of particulate matter per 1,000 pounds of exhaust gas.

NR 415.07(2)(a)4. 4. Prefabricated domestic incinerators below 5 cubic feet capacity may not exceed the performance emission requirements prescribed by the American National Standards Institute for domestic incinerators, standard Z21.6, incorporated by reference in s. NR 484.11 (3).

NR 415.07(2)(b) (b) Sewage treatment plant sludge and grit incinerators on which construction or modification is commenced after February 1, 1975; emissions may not exceed 1.30 pounds per ton of dry sludge or grit input (0.65 grams per kilogram of dry sludge or grit input).

NR 415.07 History History: Renum. from NR 154.11 (5) and am. Register, September, 1986, No. 369, eff. 10-1-86; am. (intro.), (1) (b) 2., (2) (a) 4. and (b), Register, May, 1992, No. 437, eff. 6-1-92; am. (1) (a) (intro.), (b) (intro.) and 2., (2) (a) 4., Register, December, 1995, No. 480, eff. 1-1-96; correction in (1) (b) 2. and (2) (a) 4., made under s. 13.93 (2m) (b) 7., Stats., Register October 2003 No. 574.

NR 415.075 NR 415.075 Particulate matter emission limitations for ledge rock quarries and industrial sand mines.

NR 415.075(1) (1) Applicability.

NR 415.075(1)(a) (a) Except as provided in par. (b), the provisions of this section are applicable to the following operations and emission points in ledge rock quarries and industrial sand mines: blasting, drilling, roads, storage piles and use of haul trucks.

NR 415.075(1)(b) (b) Operations at any of the following ledge rock quarries and industrial sand mines are not subject to the provisions of subs. (2) to (4):

NR 415.075(1)(b)1. 1. Ledge rock quarries with actual production of less than 25,000 tons per month on a rolling 12 month average.

NR 415.075(1)(b)2. 2. Ledge rock quarries with actual operation of less than 365 days per 5 year period.

NR 415.075(1)(b)3. 3. Industrial sand mines with actual production of less than 2,000 tons per month on a rolling 12 month average.

NR 415.075(1)(c) (c) When a ledge rock quarry or industrial sand mine is operated by more than one owner or operator, then actual production and actual operation shall be cumulative at the site. The applicable particulate emissions limitations of this section shall be applicable to all subsequent operators or owners at that site.

NR 415.075(2) (2) Particulate emission limitations in all areas of the state.

NR 415.075(2)(a) (a) No person may cause, allow or permit the use of any parking lot, road or other area by haul trucks or any drilling or blasting 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:

NR 415.075(2)(a)1. 1. Application of asphalt, water or suitable chemicals on unpaved roads or other areas used by haul trucks which can create airborne dust, provided the application does not create a hydrocarbon, odor or water pollution problem.

NR 415.075(2)(a)2. 2. Posting and maintenance of a 10 MPH speed limit on paved or unpaved roads or other areas used by haul trucks inside the facility’s property line.

NR 415.075(2)(a)3. 3. Covering, treatment or securing of materials likely to become airborne from haul trucks during transport, prior to any transportation off site from the quarry or mine.

NR 415.075(2)(a)4. 4. Use of wet drilling or other means of control approved by the department.

NR 415.075(2)(a)5. 5. The use of blast hole stemming materials that have been approved by either the department or the department of safety and professional services.

NR 415.075(2)(a)6. 6. Any precautions proposed by the owner or operator and accepted by the department in a permit or fugitive dust control plan.

NR 415.075(2)(a)7. 7. Use of no precautions where control measures are unnecessary due to site or meteorological conditions.

NR 415.075(2)(b) (b) In addition to meeting the requirements of par. (a), the owner or operator shall control fugitive emissions from a road or other area used by haul trucks and from drilling so that visible emissions do not exceed 20% opacity at the source.

NR 415.075(2)(c) (c) The owner or operator shall submit to the department the fugitive dust control plan described in sub. (6).

NR 415.075(3) (3) Particulate emissions limitations for operations in specific geographic areas. In addition to meeting the limitations of sub. (2), the owner or operator of any ledge rock quarry or industrial sand mine located in an area identified in s. NR 415.035 (1) shall do all of the following:

NR 415.075(3)(a) (a) Prior to a haul truck’s departure from plant property, the haul truck’s wheels and tires shall be sprayed with water or otherwise cleaned at the exit point from plant property.

NR 415.075(3)(b) (b) Storage piles of material having a silt content of greater than 5% shall be treated with water, surfactants, stabilizers or chemicals; draped; or enclosed on a minimum of 3 sides. The height of enclosure shall ensure that excessive fugitive dust emissions are prevented. Access areas surrounding storage piles shall be watered, cleaned or treated with stabilizers as needed to prevent fugitive dust from vehicle traffic.

NR 415.075(3)(c) (c) Emissions from all fugitive sources related to the operation of the quarry shall be controlled so that no visible emissions from these sources, as measured using Method 22 in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 484.04 (18), cross the facility’s property line.

NR 415.075(3)(d) (d) Emissions from activities not associated with processing equipment, including but not limited to roads, other areas used by haul trucks, storage piles and drilling, shall be controlled so that visible emissions do not exceed 5% opacity at the source.

NR 415.075(3)(e) (e) Roads and other areas used by haul trucks shall be paved with asphalt, concrete or other material approved by the department, or treated by other methods of dust control which the department approves for the particular road, driveway or trafficable area so that the visible emissions limits of pars. (c) and (d) are met. Other methods of dust control which may be approved by the department include but are not limited to periodic application of water or suitable chemicals provided the application does not create a hydrocarbon, odor or water pollution problem. In reviewing and approving other materials or methods for compliance with this subsection, the department shall consider the effects of the use of paving or other methods of dust control upon the rate and volume of surface water runoff and water quality. All roads and other areas, if paved, shall be kept free of material likely to become airborne, through a program of periodic cleaning.

NR 415.075(4) (4) Ambient air monitoring.

NR 415.075(4)(a) (a) Except as provided in par. (b), the owner or operator of any operation subject to the provisions of this section shall set up, operate and report the results obtained with a particulate matter ambient air monitoring system. The monitoring system shall comply with all of the following requirements:

NR 415.075(4)(a)1. 1. A plan that describes the ambient air monitoring program shall be submitted to the department within 30 days of the date of issuance of a permit under ch. NR 406 or 407.

NR 415.075(4)(a)2. 2. The department shall review the plan to determine whether it will provide accurate and reliable monitoring at the operation site. Department approval, conditional approval or disapproval of any ambient air monitoring plan shall be completed within 60 days of receipt of the plan.

NR 415.075(4)(a)3. 3. Monitoring for particulate matter shall be conducted for a 24-hour period on the 6 day schedule established by the U.S. environmental protection agency, or more frequently if required by the department. The department shall specify the schedule in the approved plan.

NR 415.075(4)(a)4. 4. Monitoring results shall be submitted to the department on a monthly basis. Results for each month shall be postmarked or received by the department no later than the last day of the following month.

NR 415.075(4)(a)5. 5. The owner or operator shall start monitoring by 120 days from the date of permit issuance under ch. NR 407 or as specified in the ambient air monitoring plan for any source subject to the permit requirements of ch. NR 406.

NR 415.075(4)(b) (b) The owner or operator of a source may apply for, and the department may grant, a variance from the monitoring requirements of this subsection if the applicant demonstrates that the general public will not be exposed to significant levels of particulate matter from the source, and that the source’s emissions units and processes are controlled to a level which meets all applicable requirements. The department may review any variance granted under this paragraph on a biennial basis. Following its review, the department may modify, extend or rescind the variance.

NR 415.075(5) (5) Recordkeeping. Each owner or operator of any ledge rock quarry or industrial sand mine shall keep the following records. Recordkeeping and access to these records shall be in accordance with ss. NR 439.03 to 439.05.

NR 415.075(5)(a) (a) Records of actual operation on a monthly basis.

NR 415.075(5)(b) (b) Records of actual production on a monthly basis.

NR 415.075(6) (6) Fugitive dust control plan.

NR 415.075(6)(a) (a) Each owner or operator of any ledge rock quarry or industrial sand mine shall prepare a fugitive dust control plan to prevent, detect and correct malfunctions, equipment failures or other circumstances which may cause any applicable emission limitation to be violated or which may cause air pollution. The plan shall be in writing, and updated as needed, and shall include all of the following: