Loading...
A. No person shall cause or permit the planning, construction, installation, erection, modification, use, or operation of an emission source which will cause or contribute to a violation of a performance standard established in this title.
1. The actual emission rates of all identical or reasonably similar emission sources under the control of the same source operator at a contiguous geographical area shall be summed to determine compliance with a mass-emissions discharge standard.
2. A source shall comply with a discharge standard over the full range of the source's operating rates.
B. Where a stack, vent or other outlet is at such a level that fumes, gas mist, odor, smoke, vapor or any combination thereof constituting air pollution are discharged to adjoining property, the control officer may require the installation of abatement equipment or the alteration of such stack, vent or other outlet by the owner or operator thereof to a degree that will adequately reduce or eliminate the discharge of air pollution to adjoining property.
(Ord. 1993-128 § 4 (part), 1993)
A. No person shall cause or permit the effluent from a single emission point, multiple emission point, or fugitive emissions source to have an average optical density equal to or greater than the opacity limiting standards specified in Table 17.16.040 at the end of this chapter, or as otherwise specified in this title, subject to the following provisions:
1. Opacities (optical densities), as measured in accordance with Method 9, of an effluent shall be measured by a certified visible emissions evaluator with his natural eyes, approximately following the procedures which were used during his certification, or by an approved and precisely calibrated in-stack monitoring instrument.
2. A violation of an opacity standard shall be determined by measuring and recording a set of consecutive, instantaneous opacities, and calculating the arithmetic average of the measurements within the set unless otherwise noted herein. The measurements shall be made at approximately fifteen-second intervals for a period of at least six minutes, and the number of required measurements shall be as specified in Table 17.16.040. Sets need not be consecutive in time, and in no case shall two sets overlap. If the average opacity of the set of instantaneous measurements exceeds the maximum allowed by any rule, this shall constitute a violation.
3. The use of air or other gaseous diluents solely for the purpose of achieving compliance with an opacity standard is prohibited.
B. When the presence of uncombined water is the only reason for failure of a source to otherwise meet the requirements of this article, this article shall not apply.
Instantaneous Opacity Measurements | Maximum Allowable Average Opacity, % | |||
Type of Source | Required No. (For a Set) | Excluded No. (Highest Values) | No. to Use For Averaging | |
Instantaneous Opacity Measurements | Maximum Allowable Average Opacity, % | |||
Type of Source | Required No. (For a Set) | Excluded No. (Highest Values) | No. to Use For Averaging | |
Asbestos-Containing Operation 1 | 25 | 0 | 25 | 0 |
Cold Diesel Engines 2 | 25 | 0 | 25 | 60 |
Loaded Diesel Engines 3 | 26 | 1 | 25 | 60 |
Incinerators | 27 | 2 | 25 | 20 |
Portland Cement Plants 4 | 25 | 0 | 25 | 20 |
Other Sources 5 | 25 | 0 | 25 | 20 |
1 An asbestos mill, manufacturing or fabrication operation which uses asbestos as a raw material, or spraying operation which sprays materials containing more than one percent asbestos by weight.
2 Applicable to the first ten consecutive minutes after starting up a diesel engine.
3 Applicable to a diesel engine being accelerated under load.
4 Applicable to kiln, clinker cooler, and other process equipment.
5 Any source not otherwise specifically covered within this table, unless otherwise specifically covered in this chapter.
(Ord. 2004-97 § 5 (part), 2004; Ord. 1993-128 § 4 (part), 1993)
A. No person shall cause, suffer, allow or permit operations or activities likely to result in excessive amounts of airborne dust without taking reasonable precautions to prevent excessive amounts of particulate matter from becoming airborne.
B. Except for sources located within the boundaries of the Tohono O'Odham, Pasqua Yaqui and San Xavier Indian Reservations, opacity of an emission from any nonpoint source, as measured in accordance with the Arizona Testing Manual, Reference Method 9, shall not exceed the following:
1. Twenty percent for such nonpoint sources in eastern Pima County, east of the eastern boundary of the Tohono O'Odham Reservation.
2. Forty percent for such nonpoint sources in all other areas of Pima County.
C. Open fires permitted according to Chapter 17.14 are exempt from the requirements of this section.
D. No person shall cause, suffer, allow, or permit diffusion of visible emissions, including fugitive dust, beyond the property boundary line within which the emissions become airborne, without taking reasonably necessary and feasible precautions to control generation of airborne particulate matter. Sources may be required to cease temporarily the activity or operation which is causing or contributing to the emissions until reasonably necessary and feasible precautions are taken.
1. Sources required to obtain an air quality permit under ARS § 49-426, § 49-480 or Section 17.14.040 may request to have the actions constituting reasonably necessary and feasible precautions approved and included as permit conditions. Compliance with such permit conditions shall be considered compliance with this subsection.
2. This subsection shall not apply when wind speeds exceed twenty-five (25) miles per hour (using the Beaufort Scale of Wind-Speed Equivalents, or as recorded by the National Weather Service). This exception does not apply if control measures have not been taken or were not commensurate with the size or scope of the emission source.
3. This subsection shall not apply to the generation of airborne particulate matter from undisturbed land.
(Ord. 2017-20 § 3 (part), 2017: Ord. 2002-108 § 3, 2002; Ord. 1999-11 § 2, 1999; Ord. 1995-87 § 39, 1995: Ord. 1994-83 § 49, 1994: Ord. 1993-128 § 4 (part), 1993)
17.16.055 General.
17.16.060 Fugitive dust producing activities.
17.16.070 Fugitive dust emissions standards for motor vehicle operation.
17.16.080 Vacant lots and open spaces.
17.16.090 Roads and streets.
17.16.100 Particulate materials.
17.16.110 Storage piles.
17.16.120 Mineral tailings.
17.16.125 Inactive mineral tailings impoundment and slag storage area within the Ajo PM10 Planning Area.
For purposes of this article, any source of air contaminants which due to a lack of an identifiable emission point or plume cannot be considered a point source, shall be classified as a nonpoint source. In applying this criteria, such items as air-curtain destructors, heater-planners, and conveyor transfer points shall be considered to have identifiable plumes. Any affected facility subject to regulation under this chapter or A.A.C. Title 9, Chapter 3, Article 8, shall not be subject to regulation under this article.
(Ord. 1995-87 § 40, 1995)
Loading...