______________________________________________________________________________

Append ix 7 : Final Adopted Version of Rules 310, 310.01 and Resolution to Submit 

Supplemental Information to support Implementation of Rule 310 for the 

Maricopa County , Arizona Serious Nonattainment Area for PM10 and 

Exhibit A of the Resolution Dust Control Permit Application Package

Page 212 of 720
REGULATION III – CONTROL OF AIR CONTAMINANTS

RULE 310

FUGITIVE DUST FROM DUST-GENERATING OPERATIONS

INDEX

SECTION 100 – GENERAL

101 PURPOSE

102 APPLICABILITY

103 EXEMPTIONS

SECTION 200 – DEFINITIONS

201 AREA A

202 AREA ACCESSIBLE TO THE PUBLIC

203 BULK MATERIAL

204 BULK MATERIAL HANDLING, STORAGE, AND/OR TRANSPORTING

OPERATION

205 CONTROL MEASURE

206 DISTURBED SURFACE AREA

207 DUST CONTROL IMPLEMENT

208 DUST CONTROL PLAN

209 DUST-GENERATING OPERATION

210 DUST SUPPRESSANT

211 EARTHMOVING OPERATION

212 EMERGENCY

213 EMERGENCY ACTIVITY

214 END OF WORKDAY

215 FREEBOARD

216 FUGITIVE DUST

217 GRAVEL PAD

218 GRIZZLY

219 HAUL TRUCK

220 MOTOR VEHICLE

221 NORMAL FARM CULTURAL PRACTICE

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222 OFF-ROAD VEHICLE

223 OPEN STORAGE PILE

224 OWNER AND/OR OPERATOR

225 PAVE

226 PROPERTY LINE

227 ROUTINE

228 SILT

229 TRACKOUT/CARRYOUT

230 TRACKOUT CONTROL DEVICE

231 UNPAVED HAUL/ACCESS ROAD

232 UNPAVED PARKING LOT

233 UNPAVED ROAD

234 WIND-BLOWN DUST

235 WORK SITE

SECTION 300 – STANDARDS

301 GENERAL REQUIREMENTS FOR DUST-GENERATING OPERATIONS

302 PERMIT REQUIREMENTS FOR DUST-GENERATING OPERATIONS

303 VISIBLE EMISSIONS REQUIREMENTS FOR DUST-GENERATING

OPERATIONS

304 STABILIZATION REQUIREMENTS FOR DUST-GENERATING

OPERATIONS

305 CONTROL MEASURES FOR DUST-GENERATING OPERATIONS

306 TRACKOUT, CARRY-OUT, SPILLAGE, AND/OR EROSION

307 SOIL MOISTURE

308 PROJECT INFORMATION SIGN FOR DUST-GENERATING OPERATIONS

309 DUST CONTROL TRAINING CLASSES FOR DUST-GENERATING

OPERATIONS

310 DUST CONTROL COORDINATOR FOR DUST-GENERATING

OPERATIONS

SECTION 400 – ADMINISTRATIVE REQUIREMENTS

401 DUST CONTROL PERMIT REQUIREMENTS

402 DUST CONTROL PLAN REQUIREMENTS

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403 DUST CONTROL PLAN REVISIONS

404 DUST CONTROL BLOCK PERMIT REQUIREMENTS

405 APPROVAL OR DENIAL OF PERMIT APPLICATIONS FOR DUSTGENERATING OPERATIONS

406 TERMS FOR PERMITS FOR DUST-GENERATING OPERATIONS

407 DEFACING, ALTERING, FORGING, COUNTERFEITING, OR FALSIFYING 

PERMITS FOR DUST-GENERATING OPERATIONS

408 FEES FOR PERMITS FOR DUST-GENERATING OPERATIONS

409 POSTING OF PERMITS FOR DUST-GENERATING OPERATIONS

410 COMPLIANCE SCHEDULE

SECTION 500 – MONITORING AND RECORDS

501 COMPLIANCE DETERMINATION

502 RECORDKEEPING

503 RECORDS RETENTION

504 TEST METHODS ADOPTED BY REFERENCE

Page 215 of 720
BLANK PAGE

Page 216 of 720
Revised 07/13/88 

Revised 07/06/93 

Revised 09/20/94 

Revised 06/16/99 

Revised 02/16/00 

Revised 04/07/04 

Revised 03/26/08 

Revised 01/27/10 

MARICOPA COUNTY

AIR POLLUTION CONTROL REGULATIONS

REGULATION III – CONTROL OF AIR CONTAMINANTS

RULE 310

FUGITIVE DUST FROM DUST-GENERATING OPERATIONS

SECTION 100 – GENERAL

101 PURPOSE: To limit particulate matter (PM10) emissions into the ambient air from any 

property, operation or activity that may serve as a fugitive dust source. The effect of this 

rule shall be to minimize the amount of PM10 entrained into the ambient air as a result of 

the impact of human activities by requiring measures to prevent, reduce, or mitigate 

particulate matter emissions.

102 APPLICABILITY: The provisions of this rule shall apply to all dust-generating

operations except for those dust-generating operations listed in Section 103 of this rule. 

103 EXEMPTIONS:

103.1 The provisions of this rule shall not apply to normal farm cultural practices 

according to Arizona Revised Statutes (A.R.S.) § 49-457 and A.R.S. § 49-504.4. 

103.2 The provisions of this rule shall not apply to the following non-traditional sources 

of fugitive dust that are located at sources that do not require any permit under 

these rules. These non-traditional sources of fugitive dust are subject to the 

standards and/or requirements described in Rule 310.01: Fugitive Dust from NonTraditional Sources of Fugitive Dust of these rules: 

a. Vehicle use in open areas and vacant lots. 

b. Open areas and vacant lots. 

c. Unpaved parking lots. 

d. Unpaved roadways (including alleys). 

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e. Livestock activities. 

f. Erosion-caused deposition of bulk materials onto paved surfaces. 

g. Easements, rights-of-way, and access roads for utilities (transmission of 

electricity, natural gas, oil, water, and gas). 

103.3 The provisions of this rule shall not apply to emergency activities that may disturb 

the soil conducted by any utility or government agency in order to prevent public 

injury or to restore critical utilities to functional status.

103.4 The provisions of this rule do not apply to the establishment of initial landscapes 

without the use of mechanized equipment, conducting landscape maintenance 

without the use of mechanized equipment, and playing on or maintaining a field 

used for non-motorized sports. However, establishing initial landscapes without 

the use of mechanized equipment and conducting landscape maintenance without 

the use of mechanized equipment shall not include grading, or trenching 

performed to establish initial landscapes or to redesign existing landscapes. 

103.5 The provisions of this rule shall not apply to rooftop operations for cutting, 

drilling, grinding, or coring roofing tile when such activity is occurring on a 

pitched roof.

SECTION 200 – DEFINITIONS: For the purpose of this rule, the following definitions apply, 

in addition to those definitions found in Rule 100: General Provisions and Definitions of these 

rules. In the event of any inconsistency between any of the Maricopa County air pollution control 

rules, the definitions in this rule take precedence. 

201 AREA A – As defined in A.R.S. § 49-541(1), the area in Maricopa County delineated as 

follows: 

Township 8 North, Range 2 East and Range 3 East 

Township 7 North, Range 2 West through Range 5 East 

Township 6 North, Range 5 West through Range 6 East 

Township 5 North, Range 5 West through Range 7 East

Township 4 North, Range 5 West through Range 8 East 

Township 3 North, Range 5 West through Range 8 East 

Township 2 North, Range 5 West through Range 8 East 

Township 1 North, Range 5 West through Range 7 East 

Township 1 South, Range 5 West through Range 7 East 

Township 2 South, Range 5 West through Range 7 East 

Township 3 South, Range 5 West through Range 1 East 

Township 4 South, Range 5 West through Range 1 East 

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202 AREA ACCESSIBLE TO THE PUBLIC – Any paved parking lot or paved roadway 

that can be entered or used for public travel primarily for purposes unrelated to the dustgenerating operation. 

203 BULK MATERIAL – Any material, including, but not limited to, the following 

materials that are capable of producing fugitive dust: 

203.1 Earth. 

203.2 Rock. 

203.3 Silt. 

203.4 Sediment. 

203.5 Sand. 

203.6 Gravel. 

203.7 Soil. 

203.8 Fill. 

203.9 Aggregate less than 2 inches in length or diameter (i.e., aggregate base course 

[ABC]). 

203.10 Dirt. 

203.11 Mud. 

203.12 Demolition debris. 

203.13 Cotton. 

203.14 Trash. 

203.15 Cinders. 

203.16 Pumice. 

203.17 Sawdust. 

203.18 Feeds. 

203.19 Grains. 

203.20 Fertilizers. 

203.21 Fluff from shredders. 

203.22 Dry concrete. 

204 BULK MATERIAL HANDLING, STORAGE, AND/OR TRANSPORTING 

OPERATION – The use of equipment, haul trucks, and/or motor vehicles, including, but 

not limited to, for the following activities that are capable of producing fugitive dust: 

204.1 Loading. 

204.2 Unloading. 

204.3 Conveying. 

204.4 Transporting. 

204.5 Piling. 

204.6 Stacking. 

204.7 Screening. 

204.8 Grading. 

204.9 Moving bulk materials. 

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205 CONTROL MEASURE – A technique, practice, or procedure used to prevent or 

minimize the generation, emission, entrainment, suspension, and/or airborne transport of 

fugitive dust. Control measures include, but are not limited to:

205.1 Curbing; 

205.2 Paving; 

205.3 Pre-watering;

205.4 Applying dust suppressants; 

205.5 Physically stabilizing with vegetation, gravel, recrushed/recycled asphalt or 

other forms of physical stabilization;

205.6 Limiting, restricting, phasing and/or rerouting motor vehicle access; 

205.7 Reducing vehicle speeds and/or number of vehicle trips; 

205.8 Limiting use of off-road vehicles on open areas and vacant lots; 

205.9 Utilizing work practices and/or structural provisions to prevent wind and 

water erosion onto areas accessible to the public;

205.10 Appropriately using dust control implements; 

205.11 Installing one or more grizzlies, gravel pads, and/or wash down pads adjacent 

to the entrance of an area accessible to the public to control carry-out and 

trackout; 

205.12 Keeping open-bodied haul trucks in good repair, so that spillage may not 

occur from beds, sidewalls, and tailgates; and 

205.13 Covering the cargo beds of haul trucks to minimize wind-blown dust 

emissions and spillage.

206 DISTURBED SURFACE AREA – A portion of the earth's surface or material placed on 

the earth’s surface that has been physically moved, uncovered, destabilized, or otherwise 

modified from its undisturbed native condition if the potential for the emission of fugitive 

dust is increased by the movement, destabilization, or modification. 

207 DUST CONTROL IMPLEMENT – A tool, machine, equipment, accessory, structure, 

enclosure, cover, material or supply, including an adequate readily available supply of 

water and its associated distribution/delivery system, used to control fugitive dust 

emissions.

208 DUST CONTROL PLAN – A written plan describing all control measures to be 

implemented and maintained in order to prevent or minimize the generation, emission, 

entrainment, suspension, and/or airborne transport of fugitive dust. 

209 DUST-GENERATING OPERATION – Any activity capable of generating fugitive 

dust, including, but not limited to, the following activities:

209.1 Land clearing, maintenance, and land clean-up using mechanized equipment.

209.2 Earthmoving.

209.3 Weed abatement by discing or blading.

209.4 Excavating.

209.5 Construction.

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209.6 Demolition.

209.7 Bulk material handling (e.g., bulk material hauling and/or transporting, bulk 

material stacking, loading, and unloading operations).

209.8 Storage and/or transporting operations (e.g., open storage piles).

209.9 Operation of any outdoor equipment.

209.10 Operation of motorized machinery.

209.11 Establishing and/or using staging areas, parking areas, material storage areas, or 

access routes to and from a site.

209.12 Establishing and/or using unpaved haul/access roads to, from, and within a site. 

209.13 Disturbed surface areas associated with a site.

209.14 Installing initial landscapes using mechanized equipment. 

210 DUST SUPPRESSANT – Water, hygroscopic material, solution of water and chemical 

surfactant, foam, non-toxic chemical stabilizer or any other dust palliative, which is not 

prohibited for ground surface application by the U.S. Environmental Protection Agency 

(EPA) or the Arizona Department of Environmental Quality (ADEQ) or any applicable 

law, rule, or regulation, as a treatment material for reducing fugitive dust emissions.

211 EARTHMOVING OPERATION – The use of any equipment for an activity that may 

generate fugitive dust, such as but not limited to, the following activities:

211.1 Cutting and filling. 

211.2 Grading. 

211.3 Leveling. 

211.4 Excavating. 

211.5 Trenching. 

211.6 Loading or unloading of bulk materials. 

211.7 Demolishing. 

211.8 Blasting. 

211.9 Drilling. 

211.10 Adding bulk materials to or removing bulk materials from open storage piles. 

211.11 Back filling. 

211.12 Soil mulching. 

211.13 Landfill operations. 

211.14 Weed abatement by discing or blading. 

212 EMERGENCY – A situation arising from sudden and reasonably unforeseeable events 

beyond the control of the source, including acts of God, which situation requires 

immediate corrective action to restore normal operation, and that causes the source to 

exceed a limitation in this rule, due to unavoidable increases in emissions attributable to 

the emergency. An emergency shall not include any noncompliance due to improperly 

designed equipment, lack of preventative maintenance, careless or improper operation, or 

operator error.

213 EMERGENCY ACTIVITY – Repairs that are a result of an emergency which prevents 

or hinders the provision of electricity, the distribution/collection of water, and the 

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availability of other utilities due to unforeseen circumstances that are beyond the routine 

maintenance and repair due to normal wear conducted by a utility or municipality. 

214 END OF WORKDAY – The end of a working period that may include one or more 

work shifts. If working 24 hours a day, the end of a working period shall be considered 

no later than 8 pm. 

215 FREEBOARD – The vertical distance between the top edge of a cargo container area 

and the highest point at which the bulk material contacts the sides, front, and back of a 

cargo container area.

216 FUGITIVE DUST – The particulate matter not collected by a capture system, that is 

entrained in the ambient air, and is caused from human and/or natural activities, such as, 

but not limited to, the movement of soil, vehicles, equipment, blasting, and wind. For the 

purpose of this rule, fugitive dust does not include particulate matter emitted directly 

from the exhaust of motor vehicles and other internal combustion engines, from portable 

brazing, soldering, or welding equipment, and from piledrivers, and does not include 

emissions from process and combustion sources that are subject to other rules in 

Regulation III (Control of Air Contaminants) of these rules.

217 GRAVEL PAD – A layer of washed gravel, rock, or crushed rock that is at least one 

inch or larger in diameter, that is maintained at the point of intersection of an area 

accessible to the public and a work site exit to dislodge mud, dirt, and/or debris from the 

tires of motor vehicles and/or haul trucks, prior to leaving the work site. Minimum 

dimensions must be 30 feet wide by 3 inches deep and 50 feet long, or the length of the 

longest haul truck, whichever is greater. If an unpaved surface exit does not have 

adequate width to install a 30-foot wide gravel pad, then the width of the gravel pad must 

cover the full width of the unpaved surface exit and such shorter width must be adequate 

to prevent trackout. 

218 GRIZZLY – A device (i.e., rails, pipes, or grates) used to dislodge mud, dirt, and/or 

debris from the tires and undercarriage of motor vehicles and/or haul trucks prior to 

leaving the work site.

219 HAUL TRUCK – Any fully or partially open-bodied self-propelled vehicle including 

any non-motorized attachments, such as, but not limited to, trailers or other conveyances 

that are connected to or propelled by the actual motorized portion of the vehicle used for 

transporting bulk materials.

220 MOTOR VEHICLE – A self-propelled vehicle for use on the public roads and 

highways of the State of Arizona and required to be registered under the Arizona State 

Uniform Motor Vehicle Act, including any non-motorized attachments, such as but not 

limited to, trailers or other conveyances which are connected to or propelled by the actual 

motorized portion of the vehicle. 

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221 NORMAL FARM CULTURAL PRACTICE – All activities by the owner, lessee, 

agent, independent contractor, and/or supplier conducted on any facility for the 

production of crops and/or nursery plants. Disturbances of the field surface caused by 

turning under stalks, tilling, leveling, planting, fertilizing, or harvesting are included in 

this definition.

222 OFF-ROAD VEHICLE – Any self-propelled conveyance specifically designed for offroad use, including, but not limited to, off-road or all-terrain equipment, trucks, cars, 

motorcycles, motorbikes, or motorbuggies. 

223 OPEN STORAGE PILE – Any accumulation of bulk material with a 5% or greater silt 

content that has a total surface area of 150 square feet or more and that at any one point 

attains a height of three feet. Silt content shall be assumed to be 5% or greater unless a 

person can show, by testing in accordance with ASTM Method C136-06 or other 

equivalent method approved in writing by the Control Officer and the Administrator, that 

the silt content is less than 5%.

224 OWNER AND/OR OPERATOR – The person including, but not limited to, the 

property owner, lessee, developer, responsible official, Dust Control permit applicant 

(who may also be the responsible party contracting to do the work), general contractor, 

prime contractor, supervisor, management company, or any person who owns, leases, 

operates, controls, or supervises a dust-generating operation subject to the requirements 

of this rule. 

225 PAVE – To apply and maintain asphalt, concrete, or other similar material to a roadway 

surface (i.e., asphaltic concrete, concrete pavement, chip seal, or rubberized asphalt).

226 PROPERTY LINE – The boundaries of an area in which either a person causing the 

emission or a person allowing the emission has the legal use or possession of the 

property. Where such property is divided into one or more sub-tenancies, the property 

line(s) shall refer to the boundaries dividing the areas of all sub-tenancies.

227 ROUTINE – Any dust-generating operation which occurs more than 4 times per year or 

lasts 30 cumulative days or more per year. 

228 SILT – Any aggregate material with a particle size less than 75 micrometers in diameter, 

which passes through a No. 200 sieve.

229 TRACKOUT/CARRYOUT – Any and all bulk materials that adhere to and 

agglomerate on the surfaces of motor vehicles, haul trucks, and/or equipment (including 

tires) and that have fallen or been deposited onto an area accessible to the public.

230 TRACKOUT CONTROL DEVICE – A gravel pad, grizzly, wheel wash system, or a 

paved area, located at the point of intersection of an unpaved area and an area accessible 

to the public that controls or prevents vehicular trackout. 

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231 UNPAVED HAUL/ACCESS ROAD – Any on-site unpaved road used by commercial, 

industrial, institutional, and/or governmental traffic. 

232 UNPAVED PARKING LOT – Any area that is not paved and that is designated for 

parking in the Dust Control Plan or that is used for parking, maneuvering, material 

handling, or storing motor vehicles and equipment. An unpaved parking lot includes, but 

is not limited to, automobile impound yards, wrecking yards, automobile dismantling 

yards, salvage yards, material handling yards, and storage yards. For the purpose of this 

rule, maneuvering shall not include military maneuvers or exercises conducted on federal 

facilities.

233 UNPAVED ROAD – Any road or equipment path that is not paved. For the purpose of 

this rule, an unpaved road is not a horse trail, hiking path, bicycle path, or other similar 

path used exclusively for purposes other than travel by motor vehicles. 

234 WIND-BLOWN DUST – Visible emissions, from any disturbed surface area, that are 

generated by wind action alone.

235 WORK SITE – Any property upon which any dust-generating operations occur.

SECTION 300 – STANDARDS

301 GENERAL REQUIREMENTS FOR DUST-GENERATING OPERATIONS:

301.1 Any person engaged in a dust-generating operation subject to this rule shall be 

subject to the standards and/or requirements of this rule before, after, and while 

conducting such dust-generating operation, including during weekends, after work 

hours, and on holidays. 

301.2 For the purpose of this rule, any control measure that is implemented must achieve 

the applicable standard(s) described in this rule, as determined by the corresponding 

test method(s), as applicable, and must achieve other applicable standard(s) set forth 

in this rule.

301.3 Control measures described in Section 305 of this rule. Regardless of whether a 

dust-generating operation is in compliance with an approved Dust Control Plan or 

there is no approved Dust Control Plan, the owner and/or operator of a dustgenerating operation shall be subject to all requirements of this rule at all times.

301.4 Failure to comply with the provisions of this rule, as applicable, and/or of an 

approved Dust Control Plan, shall constitute a violation.

302 PERMIT REQUIREMENTS FOR DUST-GENERATING OPERATIONS:

302.1 No person shall commence construction of, operate, or make a modification to 

any dust-generating operation when such dust-generating operations disturb a 

Page 224 of 720
total surface area of 0.10 acre (4,356 square feet) or more without first obtaining a 

permit or permit revision from the Control Officer.

302.2 No person shall commence construction of, operate, or make a modification to 

any dust-generating operation that disturbs a total surface area of less than 0.10 

acre (4,356 square feet) under common control that are either contiguous or 

separated only by a public or private roadway and that cumulatively equal or 

exceed 0.10 acre in area without first obtaining a permit or permit revision from 

the Control Officer.

302.3 No person shall commence any routine dust-generating operation that disturbs a 

surface area of 0.10 acre or greater at a site that has obtained or must obtain a 

Title V, Non-Title V, or General permit under Regulation II (Permits and Fees) of 

these rules without first submitting to the Control Officer a Dust Control Plan.

302.4 The property owner, lessee, developer, responsible official, Dust Control permit 

applicant (who may also be the responsible party contracting to do the work), 

general contractor, prime contractor, supervisor, management company, or any 

person who owns, leases, operates, controls, or supervises a dust-generating

operation subject to the requirements of this rule shall be responsible for obtaining 

a permit or permit revision from the Control Officer.

302.5 All permit applications shall be filed in the manner and form prescribed by the 

Control Officer, which includes, but is not limited to, the requirements of Section 

400 of this rule. The application shall contain all the information necessary to 

enable the Control Officer to make the determination to grant or to deny a permit 

or permit revision, which shall contain such terms and conditions as the Control 

Officer deems necessary to assure a source's compliance with the requirements of 

this rule.

302.6 The issuance of any permit or permit revision shall not relieve any person subject 

to the requirements of this rule from compliance with any Federal laws, Arizona 

laws, or these rules.

302.7 Any other law, regulation or permit shall not relieve any person from obtaining a 

permit or permit revision required under this rule. 

303 VISIBLE EMISSIONS REQUIREMENTS FOR DUST-GENERATING

OPERATIONS:

303.1 Dust-Generating Operation Visible Emissions Requirement: The owner 

and/or operator of a dust-generating operation shall not allow visible fugitive dust 

emissions to exceed the limits listed in either one of the following:

a. The owner and/or operator of a dust-generating operation shall not cause or 

allow visible fugitive dust emissions to exceed 20% opacity. 

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b. The owner and/or operator of a dust-generating operation shall not cause or 

allow visible emissions of particulate matter, including fugitive dust, beyond 

the property line within which the emissions are generated. Visible emissions 

shall be determined by a standard of no visible emissions exceeding 30 

seconds in duration in any six-minute period as determined by using EPA 

Reference Method 22.

303.2 Exemptions from Dust-Generating Operation Visible Emissions

Requirement:

a. If wind conditions cause fugitive dust emissions to exceed the visible 

emissions requirements in Section 303.1(a) of this rule, despite implementation of the Dust Control Plan, an owner and/or operator shall: 

(1) Ensure that all control measures and requirements of the Dust Control 

Plan are implemented and the subject violations cannot be prevented by 

better application, operation, or maintenance of these measures and 

requirements.

(2) Cease dust-generating operations and stabilize any disturbed surface area 

consistent with Section 304.3 of this rule. 

(3) Compile records consistent with Sections 502 and 503 of this rule and 

document control measure and other Dust Control Plan requirement 

implementation.

b. Emergency Maintenance of Flood Control Channels and Water Retention 

Basins: The visible emissions limits described in Section 303.1 of this rule 

shall not apply to emergency maintenance of flood control channels and water 

retention basins, provided that control measures are implemented. 

c. Vehicle Test and Development Facilities and Operations: The visible 

emissions limit described in Section 303.1(a) of this rule shall not apply to 

vehicle test and development facilities and operations when dust is required to 

test and validate design integrity, product quality, and/or commercial 

acceptance, if such testing is not feasible within enclosed facilities. However, 

all areas used to test and validate design integrity, product quality, and/or 

commercial acceptance shall be stabilized after such testing, in compliance 

with Appendix C (Fugitive Dust Test Methods) of these rules. All areas not 

used to test and validate design integrity, product quality, and/or commercial 

acceptance shall be stabilized, in compliance with Appendix C (Fugitive Dust 

Test Methods) of these rules. In addition, vehicle test and development 

facilities may require a Dust Control permit in accordance with Section 302 of 

this rule.

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d. Activities Near the Property Line: The opacity limit described in Section 

303.1(b) of this rule shall not apply to dust-generating operations conducted 

within 25 feet of the property line. 

e. Ceasing Operations at a Solid Waste Management Facility: The requirement in Section 303.2(a)(2) of this rule to cease dust-generating operations if 

wind conditions cause fugitive dust emissions to exceed the visible emissions 

requirements in Section 303.1(a) of this rule shall not apply to daily compaction and covering of refuse if ceasing operations violates Arizona Department 

of Environmental Quality solid waste management rules or causes or threatens 

to cause a public health hazard or nuisance. However, the owner and/or 

operator must comply with all other provisions in Section 303.2(a) of this rule. 

304 STABILIZATION REQUIREMENTS FOR DUST-GENERATING

OPERATIONS:

304.1 Unpaved Parking Lot: The owner and/or operator of any unpaved parking lot 

shall not allow visible fugitive dust emissions to exceed 20% opacity and shall not 

allow silt loading equal to or greater than 0.33 oz/ft2

. However, if silt loading is 

equal to or greater than 0.33 oz/ft2, then the owner and/or operator shall not allow 

the silt content to exceed 8%.

304.2 Unpaved Haul/Access Road: 

a. The owner and/or operator of any unpaved haul/access road (whether at a 

work site that is under construction or at a work site that is temporarily or 

permanently inactive) shall not allow visible fugitive dust emissions to exceed 

20% opacity and shall not allow silt loading equal to or greater than 0.33 

oz/ft2. However, if silt loading is equal to or greater than 0.33 oz/ft2

, then the 

owner and/or operator shall not allow the silt content to exceed 6%. 

b. The owner and/or operator of any unpaved haul/access road (whether at a 

work site that is under construction or a work site that is temporarily or 

permanently inactive) shall, as an alternative to meeting the stabilization 

requirements for an unpaved haul/access road in Section 304.2(a) of this rule, 

limit vehicle trips to no more than 20 per day per road and limit vehicle 

speeds to no more than 15 miles per hour. If complying with this section of 

this rule, the owner and/or operator must include, in a Dust Control Plan, the 

maximum number of vehicle trips on the unpaved haul/access roads each day 

(including number of employee vehicles, earthmoving equipment, haul trucks, 

and water trucks) and a description of how vehicle speeds will be restricted to 

no more than 15 miles per hour. 

304.3 Disturbed Surface Area: The owner and/or operator of any disturbed surface 

area on which no activity is occurring (whether at a work site that is under 

construction or a work site that is temporarily or permanently inactive) shall meet 

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at least one of the standards described in Sections 304.3(a) through 304.3(g) 

below, as applicable. Should such a disturbed surface area contain more than one 

type of stabilization characteristic, such as soil, vegetation, or other characteristic, 

which is visibly distinguishable, then the owner and/or operator shall test each 

representative surface separately for stability, in an area that represents a random 

portion of the overall disturbed conditions of the site, in accordance with the 

appropriate test methods described in Section 501.2(c) of this rule and in 

Appendix C (Fugitive Dust Test Methods) of these rules. The owner and/or 

operator of such disturbed surface area on which no activity is occurring shall be 

considered in violation of this rule if the area is not maintained in a manner that 

meets at least one of the standards listed below, as applicable. An area is considered to be a disturbed surface area until the activity that caused the disturbance 

has been completed and the disturbed surface area meets the standards described 

in this section of this rule.

a. Maintain a soil crust;

b. Maintain a threshold friction velocity (TFV) for disturbed surface areas 

corrected for non-erodible elements of 100 cm/second or higher; 

c. Maintain a flat vegetative cover (i.e., attached [rooted] vegetation or 

unattached vegetative debris lying on the surface with a predominant 

horizontal orientation that is not subject to movement by wind) that is equal to 

at least 50%;

d. Maintain a standing vegetative cover (i.e., vegetation that is attached [rooted] 

with a predominant vertical orientation) that is equal to or greater than 30%; 

e. Maintain a standing vegetative cover (i.e., vegetation that is attached [rooted] 

with a predominant vertical orientation) that is equal to or greater than 10% 

and where the threshold friction velocity is equal to or greater than 43 

cm/second when corrected for non-erodible elements;

f. Maintain a percent cover that is equal to or greater than 10% for non-erodible 

elements; or

g. Comply with a standard of an alternative test method, upon obtaining the 

written approval from the Control Officer and the Administrator. 

304.4 Vehicle Test and Development Facilities and Operations: No stabilization 

requirement shall apply to vehicle test and development facilities and operations 

when dust is required to test and validate design integrity, product quality, and/or 

commercial acceptance, if such testing is not feasible within enclosed facilities. 

However, all areas used to test and validate design integrity, product quality, 

and/or commercial acceptance shall be stabilized after such testing, in compliance 

with Appendix C (Fugitive Dust Test Methods) of these rules. All areas not used 

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to test and validate design integrity, product quality, and/or commercial 

acceptance shall be stabilized, in compliance with Appendix C (Fugitive Dust 

Test Methods) of these rules. In addition, vehicle test and development facilities 

may require a Dust Control permit in accordance with Section 302 of this rule. 

305 CONTROL MEASURES FOR DUST-GENERATING OPERATIONS: When 

engaged in a dust-generating operation, the owner and/or operator shall install, maintain, 

and use control measures, as applicable. Control measures for specific dust-generating 

operations are described in Sections 305.1 through 305.12 of this rule. The owner and/or 

operator of a dust-generating operation shall implement control measures before, after, 

and while conducting dust-generating operations, including during weekends, after work 

hours, and on holidays. At least one primary control measure and one contingency 

control measure must be identified in the Dust Control Plan for all dust-generating

sources.

305.1 Off-Site Hauling onto Areas Accessible to the Public: The owner and/or 

operator of a dust-generating operation that involves off-site hauling shall

implement the following control measures:

a. When cargo compartment is loaded: 

(1) Load all haul trucks such that the freeboard is not less than three inches;

(2) Load all haul trucks such that at no time shall the highest point of the bulk 

material be higher than the sides, front, and back of a cargo container area; 

(3) Prevent spillage or loss of bulk material from holes or other openings in 

the cargo compartment’s floor, sides, and/or tailgate(s); and 

(4) Cover the cargo compartment with a tarp or other suitable closure. 

b. When cargo compartment is empty:

(1) Clean the interior of the cargo compartment; or

(2) Cover the cargo compartment with a tarp or other suitable closure. 

c. When off-site hauling, install, maintain, and use a suitable trackout control 

device that controls and prevents trackout and/or removes particulate matter 

from tires and the exterior surfaces of haul trucks and/or motor vehicles that 

traverse the site.

305.2 Bulk Material Hauling/Transporting When On-Site Hauling/Transporting 

Within the Boundaries of the Work Site but not Crossing an Area Accessible 

to the Public: The owner and/or operator of a dust-generating operation that 

involves bulk material hauling/transporting when on-site hauling/transporting 

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within the boundaries of the work site but not crossing an area accessible to the 

public shall implement one of the following control measures: 

a. Limit vehicle speed to 15 miles per hour or less while traveling on the work 

site;

b. Apply water to the top of the load; or 

c. Cover haul trucks with a tarp or other suitable closure. 

305.3 Bulk Material Hauling/Transporting When On-Site Hauling/Transporting 

Within the Boundaries of the Work Site and Crossing and/or Accessing an 

Area Accessible to the Public: The owner and/or operator of a dust-generating

operation that involves bulk material hauling/transporting when on-site hauling/

transporting within the boundaries of the work site and crossing and/or accessing 

an area accessible to the public shall implement all of the following control 

measures:

a. Load all haul trucks such that the freeboard is not less than three inches; 

b. Load all haul trucks such that at no time shall the highest point of the bulk 

material be higher than the sides, front, and back of a cargo container area;

c. Prevent spillage or loss of bulk material from holes or other openings in the 

cargo compartment’s floor, sides, and/or tailgate(s); and

d. When crossing and/or accessing an area accessible to the public, install, 

maintain, and use a suitable trackout control device that controls and prevents 

trackout and/or removes particulate matter from tires and the exterior surfaces 

of haul trucks and/or motor vehicles that traverse the site.

305.4 Bulk Material Stacking, Loading, and Unloading Operations: The owner 

and/or operator of a dust-generating operation that involves bulk material 

stacking, loading, and unloading operations shall implement the following control 

measures:

a. Prior to stacking, loading, and unloading: 

(1) Mix material with water; or 

(2) Mix material with a dust suppressant other than water.

b. While stacking, loading, and unloading: 

(1) Apply water; or

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(2) Apply a dust suppressant other than water. 

305.5 Open Storage Piles: The owner and/or operator of a dust-generating operation 

that involves an open storage pile shall implement one of the following control 

measures, as applicable, when not conducting stacking, loading, and unloading 

operations: 

a. Cover all open storage piles with a tarp, plastic, or other material to prevent 

wind from removing the covering(s) such that the covering(s) will not be 

dislodged by wind; or 

b. Apply water to maintain a soil moisture content at a minimum of 12%, as 

determined by ASTM Method D2216-05 or other equivalent methods 

approved by the Control Officer and the Administrator. For areas that have an 

optimum moisture content for compaction of less than 12%, as determined by 

ASTM Method D1557-02e1 or other equivalent methods approved by the 

Control Officer and the Administrator, maintain at least 70% of the optimum 

soil moisture content; or 

c. Maintain a visible crust; or 

d. Implement the control measure described in Section 305.5(b) or in Section 

305.5(c) of this rule and construct and maintain wind barriers, storage silos, or 

a three-sided enclosure with walls, whose length is no less than equal to the 

length of the pile, whose distance from the pile is no more than twice the 

height of the pile, whose height is equal to the pile height, and whose porosity 

is no more than 50%. 

305.6 Unpaved Staging Areas, Unpaved Parking Areas, and Unpaved Material 

Storage Areas: The owner and/or operator of a dust-generating operation that 

involves unpaved staging areas, unpaved parking areas, and unpaved material 

storage areas shall implement one or more of the following control measures: 

a. Apply water so that the surface is visibly moist;

b. Pave;

c. Apply and maintain gravel, recycled asphalt, or other suitable material;

d. Apply and maintain a suitable dust suppressant other than water; or 

e. Limit vehicle trips to no more than 20 per day per road and limit vehicle 

speeds to no more than 15 miles per hour. If complying with this section, the 

owner and/or operator shall provide to the Control Officer the maximum 

number of vehicle trips on the staging areas, parking areas, and/or material 

storage areas each day (including number of employee vehicles, earthmoving 

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equipment, haul trucks, and water trucks) and a description of how vehicle 

speeds will be restricted to no more than 15 miles per hour. 

305.7 Unpaved Haul/Access Roads: The owner and/or operator of a dust-generating

operation that involves unpaved haul/access roads shall implement one or more of 

the following control measures: 

a. Apply water so that the surface is visibly moist;

b. Pave;

c. Apply and maintain gravel, recycled asphalt, or other suitable material;

d. Apply and maintain a suitable dust suppressant other than water; or 

e. Limit vehicle trips to no more than 20 per day per road and limit vehicle 

speeds to no more than 15 miles per hour. If complying with this section of 

this rule, the owner and/or operator shall provide to the Control Officer the 

maximum number of vehicle trips on the unpaved haul/access roads each day 

(including number of employee vehicles, earthmoving equipment, haul trucks, 

and water trucks) and a description of how vehicle speeds will be restricted to 

no more than 15 miles per hour. 

305.8 Weed Abatement by Discing or Blading: The owner and/or operator of a dustgenerating operation that involves weed abatement by discing or blading shall 

comply with all of the following control measures:

a. Before weed abatement by discing or blading occurs, apply water;

b. While weed abatement by discing or blading is occurring, apply water; and

c. After weed abatement by discing or blading occurs, pave, apply gravel, apply 

water, apply a suitable dust suppressant other than water, or establish 

vegetative ground cover.

305.9 Blasting Operations: The owner and/or operator of a dust-generating operation 

that involves blasting operations shall pre-water and maintain surface soils in a 

stabilized condition where support equipment and vehicles will operate.

305.10 Demolition Activities: The owner and/or operator of a dust-generating operation 

that involves demolition activities shall implement all of the following control 

measures:

a. Apply water to demolition debris immediately following demolition activity; 

and

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b. Apply water to all disturbed soils surfaces to establish a visible crust and to 

prevent wind erosion. 

305.11 Disturbed Surface Areas: The owner and/or operator of a dust-generating

operation that involves disturbed surface areas shall implement the following 

control measures, as applicable:

a. Before disturbed surface areas are created, implement one of the following 

control measures:

(1) Pre-water site to depth of cuts, allowing time for penetration; or

(2) Phase work to reduce the amount of disturbed surface areas at any one 

time.

b. While disturbed surface areas are being created, implement one of the 

following control measures: 

(1) Apply water or other suitable dust suppressant other than water to keep the 

soil visibly moist throughout the process; 

(2) Apply water to maintain a soil moisture content at a minimum of 12%, as 

determined by ASTM Method D2216-05 or other equivalent method as 

approved by the Control Officer and the Administrator. For areas that have 

an optimum moisture content for compaction of less than 12%, as 

determined by ASTM Method D1557-02e1 or other equivalent method 

approved by the Control Officer and the Administrator, maintain at least 

70% of the optimum soil moisture content; or 

(3) Implement control measure described in Section 305.11(b)(1) or Section 

305.11(b)(2) of this rule and construct fences or three-foot to five-foot 

high wind barriers with 50% or less porosity adjacent to roadways or 

urban areas to reduce the amount of wind-blown material leaving a site.

c. When the dust-generating operation is finished for a period of 30 days or 

longer: For longer than temporary pauses that occur during a dust-generating

operation, the owner and/or operator shall implement one or more of the 

following control measures within ten days following the completion of such 

dust-generating operation: 

(1) Pave, apply gravel, or apply a suitable dust suppressant other than water; 

(2) Establish vegetative ground cover; 

(3) Implement control measures described in Section 305.11(c)(1) or Section 

305.11(c)(2) of this rule and restrict vehicle access to the area;

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(4) Apply water and prevent access by fences, ditches, vegetation, berms, or 

other suitable barrier or means sufficient to prevent trespass as approved 

by the Control Officer; or

(5) Restore area such that the vegetative ground cover and soil characteristics 

are similar to adjacent or nearby undisturbed native conditions. 

305.12 Easements, Rights-of-Way, and Access Roads for Utilities (Transmission of 

Electricity, Natural Gas, Oil, Water, and Gas) Associated With Sources That 

Have a Non-Title V Permit, a Title V Permit, and/or a General Permit Under 

These Rules: The owner and/or operator of a dust-generating operation that 

involves an easement, right-of-way, and access road for utilities (transmission of 

electricity, natural gas, oil, water, and gas) associated with sources that have a 

Title V permit, a Non-Title V permit, and/or a General permit under these rules 

shall implement at least one of the following control measures:

a. Inside Area A, limit vehicle speed to 15 miles per hour or less and vehicle 

trips to no more than 20 per day per road; 

b. Outside Area A, limit vehicle trips to no more than 20 per day per road; or 

c. Implement control measures described in Section 305.7 of this rule. 

306 TRACKOUT, CARRY-OUT, SPILLAGE, AND/OR EROSION: The owner and/or 

operator of a dust-generating operation shall prevent and control trackout, carry-out, 

spillage, and/or erosion. 

306.1 Trackout Control Device:

a. Criterion for Trackout Control Device: Install, maintain and use a suitable 

trackout control device that prevents and controls trackout and/or removes 

particulate matter from tires and the exterior surfaces of haul trucks and/or 

motor vehicles that traverse the site at all exits onto areas accessible to the 

public from both of the following: 

(1) All work sites with a disturbed surface area of two acres or larger, and

(2) All work sites where 100 cubic yards of bulk materials are hauled on-site 

and/or off-site per day.

b. Control Measures: For those work sites identified in Section 306.1(a) of this 

rule, prevent trackout, carry-out, spillage, and/or erosion by implementing one 

of the following control measures: 

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(1) At all exits onto areas accessible to the public, install a wheel wash 

system;

(2) At all exits onto areas accessible to the public, install a gravel pad to 

comply with Section 217 of this rule; 

(3) At all exits onto areas accessible to the public, install a grizzly or rumble 

grate that consists of raised dividers (rails, pipes, or grates) a minimum of 

three inches tall, six inches apart, and 20 feet long, to allow a vibration to 

be produced such that dust is shaken off the wheels of a vehicle as the 

entire circumference of each wheel of the vehicle passes over the grizzly 

or rumble grate; or

(4) Pave starting from the point of intersection with an area accessible to the 

public and extending for a centerline distance of at least 100 feet and a 

width of at least 20 feet.

306.2 Clean Up of Trackout: 

a. Criterion for Clean Up of Trackout: Clean up, trackout, carry-out, spillage, 

and/or erosion from areas accessible to the public including curbs, gutters, and 

sidewalks, on the following time-schedule:

(1) Immediately, when trackout, carry-out, or spillage extends a cumulative 

distance of 25 linear feet or more; and 

(2) At the end of the workday, for all other trackout, carry-out, spillage, 

and/or erosion. 

b. Control Measures:

(1) Operate a street sweeper or wet broom with sufficient water, or including 

but not limited to kick broom, steel bristle broom, Teflon broom, vacuum, 

at the speed recommended by the manufacturer and at the frequency(ies) 

described in this section of this rule; or 

(2) Manually sweep up deposits to comply with this section of this rule. 

307 SOIL MOISTURE: If water is the chosen control measure in an approved Dust Control 

Plan, the owner and/or operator of a dust-generating operation shall operate a water 

application system on-site (e.g., water truck, water hose) while conducting any earthmoving operations on disturbed surface areas 1 acre or larger, unless a visible crust is 

maintained or the soil is sufficiently damp to prevent loose grains of soil from becoming 

dislodged. 

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308 PROJECT INFORMATION SIGN FOR DUST-GENERATING OPERATIONS: 

For all sites with a Dust Control permit that are five acres or larger, except for routine 

maintenance and repair done under a Dust Control Block permit, the owner and/or 

operator shall erect and maintain a project information sign at the main entrance such that 

members of the public can easily view and read the sign at all times. Such sign shall have 

a white background, have black block lettering that is at least four inches high, and shall 

contain at least all of the following information:

308.1 Project name and permittee’s name;

308.2 Current Dust Control permit number; 

308.3 Name and local phone number of person(s) responsible for dust control matters; 

308.4 Text stating: “Dust complaints? Call Maricopa County Air Quality Department – 

(Insert the accurate Maricopa County Air Quality Department complaint line 

telephone number).” 

309 DUST CONTROL TRAINING CLASSES FOR DUST-GENERATING

OPERATIONS:

309.1 Basic Dust Control Training Class:

a. At least once every three years, the persons specified in Section 309.1(b) or 

Section 309.1(c) of this rule shall successfully complete a Basic Dust Control 

Training Class conducted or approved by the Control Officer. 

b. The following persons present at a site that is subject to a permit issued by the 

Control Officer requiring control of PM10 emissions from dust-generating 

operations shall complete a Basic Dust Control Training Class as specified in 

Section 309.1(a) of this rule: 

(1) Water truck drivers.

(2) Water-pull drivers. 

(3) The site superintendent or other designated on-site representative of the 

permit holder, if present at a site that has more than one acre of disturbed 

surface area.

c. A Dust Control Block Permit permittee/holder shall have, at a minimum, one 

individual trained in accordance with the Basic Dust Control Training Class as 

specified in Section 309.1(a) of this rule, if present at a site that has more than 

one acre of disturbed surface area.

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d. All persons having successfully completed training during the 2006 and 2007 

calendar years shall be deemed to have satisfied the requirement to successfully complete the Basic Dust Control Training Class, if the training that was 

completed was conducted or approved by the Control Officer. Completion of 

the Comprehensive Dust Control Training Class, as required in Section 309.2 

of this rule, shall satisfy the requirement of this section of this rule.

e. The Control Officer may suspend or revoke for cause including, but not 

limited to, inappropriate ethical activities or conduct associated with the dust

control program or repeated failure to follow the training requirements, a 

certification issued to a person having successfully completed a Basic Dust 

Control Training Class conducted or approved by the Control Officer. The 

Control Officer will provide written notification to such person regarding such 

suspension or revocation. 

309.2 Comprehensive Dust Control Training Class:

a. At least once every three years, the Dust Control Coordinator, who meets the 

requirements of Section 310 of this rule, shall successfully complete the 

Comprehensive Dust Control Training Class conducted or approved by the 

Control Officer.

b. All persons having successfully completed training during the 2006 and 2007 

calendar years shall be deemed to have satisfied the requirement to successfully complete the Comprehensive Dust Control Training Class, if the training 

that was completed was conducted or approved by the Control Officer. 

c. The Control Officer may suspend or revoke for cause including, but not 

limited to, inappropriate ethical activities or conduct associated with the dust 

control program or repeated failure to follow the training requirements, a 

certification issued to a person having successfully completed a Comprehensive Dust Control Training Class conducted or approved by the Control 

Officer. The Control Officer will provide written notification to such person 

regarding such suspension or revocation. 

310 DUST CONTROL COORDINATOR FOR DUST-GENERATING OPERATIONS:

310.1 The permittee for any site of five acres or more of disturbed surface area subject 

to a permit issued by the Control Officer requiring control of PM10 emissions 

from dust-generating operations shall have on-site at least one Dust Control 

Coordinator trained in accordance with Section 309.2 of this rule at all times 

during primary dust-generating operations related to the purposes for which the 

Dust Control permit was obtained. 

310.2 The Dust Control Coordinator shall have full authority to ensure that dust control 

measures are implemented on-site, including conducting inspections, deployment 

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of dust suppression resources, and modifications or shut-down of activities as 

needed to control dust. 

310.3 The Dust Control Coordinator shall be responsible for managing dust prevention 

and dust control on the site.

310.4 At least once every three years, the Dust Control Coordinator shall successfully 

complete a Comprehensive Dust Control Training Class conducted or approved 

by the Control Officer. 

310.5 The Dust Control Coordinator shall have a valid dust training certification 

identification card readily accessible on-site while acting as a Dust Control 

Coordinator. 

310.6 The requirement for a Dust Control Coordinator shall lapse when all of the 

following actions/events/procedures occur: 

a. The area of disturbed surface area becomes less than five acres;

b. The previously disturbed surface areas have been stabilized in accordance 

with/in compliance with the standards and/or requirements of this rule; and 

c. The Dust Control permit holder provides notice to the Control Officer of 

acreage stabilization.

310.7 The Dust Control Block Permit permittee/holder shall have on sites that have 

more than one acre of disturbed surface area at least one individual, who has been 

trained in accordance with the requirements of Section 309.1(c) of this rule. One 

such individual shall be designated by the Dust Control Block Permit permittee/ 

holder as the Dust Control Coordinator. The Dust Control Coordinator shall be 

present on-site at all times during primary dust-generating activities that are 

related to the purposes for which the permit was obtained. 

SECTION 400 – ADMINISTRATIVE REQUIREMENTS

401 DUST CONTROL PERMIT REQUIREMENTS:

401.1 To apply for a Dust Control permit, an applicant shall complete a permit 

application in the manner and form prescribed by the Control Officer. At a 

minimum, such application shall contain the following information: 

a. Applicant information; 

b. Project information, which shall include a project site drawing and, if the site 

is one acre or larger, soil designations; and 

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c. Dust Control Plan, which shall meet the specifications described in Section 

402 of this rule. 

401.2 A Dust Control permit shall be granted subject to, but not limited to, the following 

conditions: 

a. The permittee shall be responsible for ensuring that all persons abide by the 

conditions of the Dust Control permit and these regulations; 

b. The permittee shall be responsible for supplying complete copies of the Dust 

Control permit including the Dust Control Plan, to all project contractors and 

subcontractors; 

c. The permittee shall be responsible for all permit conditions, until a Permit 

Cancellation Request form has been submitted by the owner and/or operator 

and approved by the Control Officer; 

d. The permittee shall be responsible for providing Dust Control Coordinator’s/ 

Coordinators’ name(s) and dust control training certification information/ 

number(s) to the Control Officer and for keeping such information updated. 

401.3 The signature of the permittee on the Dust Control permit application shall 

constitute agreement to accept responsibility for meeting the conditions of the 

Dust Control permit and for ensuring that control measures are implemented 

throughout the project site and during the duration of the project. 

402 DUST CONTROL PLAN REQUIREMENTS:

402.1 The owner and/or operator of a dust-generating operation shall submit to the 

Control Officer a Dust Control Plan with any permit applications that involve 

dust-generating operations with a disturbed surface area that equals or exceeds 

0.10 acre (4,356 square feet) including both of the following situations: 

a. When submitting an application for a Dust Control permit involving dustgenerating operations that would equal or exceed 0.10 acre (4,356 square 

feet), and

b. Before commencing any routine dust-generating operation at a site that has 

obtained or must obtain a Title V, Non-Title V, or General permit under 

Regulation II (Permits and Fees) of these rules.

402.2 The owner and/or operator of a dust-generating operation shall submit to the 

Control Officer a Dust Control Plan with any application for a Dust Control 

permit. Applicants shall describe, in a Dust Control Plan, all control measures to 

be implemented before, after, and while conducting any dust-generating 

operation, including during weekends, after work hours, and on holidays. 

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402.3 A Dust Control Plan shall, at a minimum, contain all of the following 

information: 

a. Name(s), address(es), and phone numbers of person(s) responsible for the 

submittal and implementation of the Dust Control Plan and responsible for the 

dust-generating operation. 

b. A drawing, on 81⁄2” x 11” paper, that shows: 

(1) Entire project site/facility boundaries, including boundaries of areas to be 

disturbed if less than entire project site/facility boundaries,

(2) Acres to be disturbed with linear dimensions or certification by a licensed 

engineer or surveyor showing the total square footage to be disturbed, 

(3) Nearest public roads,

(4) North arrow,

(5) Planned exit locations onto areas accessible to the public, and

(6) Unpaved parking lot(s). 

c. Appropriate control measures, or a combination thereof, as described in 

Sections 305 and 306 of this rule, for every actual and potential dustgenerating operation. 

(1) Control measures must be implemented before, after, and while 

conducting any dust-generating operation, including during weekends, 

after work hours, and on holidays. 

(2) All required control measures and at least one contingency control 

measure must be identified for all dust-generating operations. 

(3) A control measure that is not listed in Section 305 or in Section 306 of this 

rule may be chosen provided that such control measure is implemented to 

comply with the requirements of this rule. 

(4) If complying with Section 305.7(e) of this rule, the Dust Control Plan 

must include the maximum number of vehicle trips on the unpaved 

haul/access roads each day (including number of employee vehicles, 

earthmoving equipment, haul trucks, and water trucks). 

d. Dust suppressants to be applied, including all of the following product 

specifications or label instructions for approved usage: 

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(1) Method, frequency, and intensity of application; 

(2) Type, number, and capacity of application equipment; and 

(3) Information on environmental impacts and approvals or certifications 

related to appropriate and safe use for ground application. 

e. Specific surface treatment(s) and/or control measures utilized to control 

material trackout and sedimentation where unpaved roads and/or access points 

join areas accessible to the public.

402.4 The Control Officer shall approve, disapprove, or conditionally approve the Dust 

Control Plan, in accordance with the criteria used to approve, disapprove or 

conditionally approve a permit, as described in Rule 200: Permit Requirements of 

these rules. 

402.5 For construction projects one acre or larger, except for routine maintenance and 

repair done under a Dust Control Block Permit, a statement disclosing which of 

the four designated texture(s) of soil described in Appendix F of these rules is 

naturally present at or will be imported to the dust-generating operation. The 

measured soil content at a particular site shall take precedence over any mapped 

soil types, and whenever soils have been tested at a particular site, the test results 

should be relied on rather than the map in Appendix F of these rules. 

402.6 Should any primary control measure(s) prove ineffective, the owner and/or 

operator shall immediately implement the contingency control measure(s). If the 

identified contingency control measure is effective to comply with all of the 

requirements of this rule, the owner and/or operator need not revise the Dust 

Control Plan. 

403 DUST CONTROL PLAN REVISIONS:

403.1 If Required by the Control Officer:

a. If the Control Officer determines that an approved Dust Control Plan has been 

followed, yet fugitive dust emissions from any dust-generating operation still 

exceed the standards of this rule, then the Control Officer shall issue a written 

notice to the owner and/or operator of the dust-generating operation 

explaining such determination. 

b. The owner and/or operator of a dust-generating operation shall make written 

revisions to the Dust Control Plan and shall submit such revised Dust Control 

Plan to the Control Officer within three working days of receipt of the Control 

Officer’s written notice, unless such time period is extended by the Control 

Officer, upon request, for good cause. During the time that such owner and/or 

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operator is preparing revisions to the approved Dust Control Plan, such owner 

and/or operator must still comply with all requirements of this rule. 

403.2 If Requested by the Permittee:

a. If the acreage of a project changes, the owner and/or operator shall request a 

Dust Control Plan revision. Such Dust Control Plan revision shall be filed in 

the manner and form prescribed by the Control Officer.

b. If the permit holder changes, the owner and/or operator shall request a Dust 

Control Plan revision. Such Dust Control Plan revision shall be filed in the 

manner and form prescribed by the Control Officer. 

c. If the name(s), address(es), or phone numbers of person(s) responsible for the 

submittal and implementation of the Dust Control Plan and responsible for the 

dust-generating operation change, the owner and/or operator shall request a 

Dust Control Plan revision. Such Dust Control Plan revision shall be filed in 

the manner and form prescribed by the Control Officer. 

d. If the activities related to the purposes for which the Dust Control permit was 

obtained change, the owner and/or operator shall request a Dust Control Plan 

revision. Such Dust Control Plan revision shall be filed in the manner and 

form prescribed by the Control Officer.

403.3 If Rule 310 is Revised:

a. If any changes to a Dust Control Plan are necessary as a result of the most 

recent revisions of this rule, such changes to the Dust Control Plan shall not 

be required until the associated Dust Control permit is required to be renewed. 

b. If any changes to a Dust Control Plan associated with a Title V permit or with 

a Non-Title V permit are necessary as a result of the most recent revisions of 

this rule, then the owner and/or operator shall submit a revised Dust Control 

Plan to the Control Officer, according to the minor permit revision procedures 

described in Rule 210 or in Rule 220 of these rules respectively, no later than 

six months after the effective date of the most recent revisions to this rule.

404 DUST CONTROL BLOCK PERMIT REQUIREMENTS:

404.1 A Dust Control Block Permit application may be submitted to the Control Officer, 

if one or more of the activities listed in this section of this rule are conducted and 

if such activities occur at more than one site (i.e., projects that involve multiple 

small areas scattered throughout Maricopa County including, but not limited to, 

fiber optic cable installation and natural gas line extension). New construction 

shall obtain a separate Dust Control permit. 

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a. Routine operation (i.e., municipalities, governmental agencies, and utilities 

that are responsible for the repeat maintenance of infrastructure including, but 

not limited to, weed control around a prison, canal bank and road grading, and 

road shoulder grading). 

b. Maintenance (i.e., municipalities, governmental agencies, and utilities that are 

responsible for the repeat maintenance of infrastructure including, but not 

limited to, weed control around a prison, canal bank and road grading, and 

road shoulder grading). 

c. Expansion or extension of utilities, paved roads, unpaved roads, road 

shoulders, alleys, and public rights-of-way at non-contiguous sites by 

municipalities, governmental agencies, and utilities.

404.2 When completing and submitting a Dust Control Block Permit application, the 

owner and/or operator shall comply with the following requirements:

a. A Dust Control Plan that meets the criteria described in Section 402 of this 

rule and applies to all sites shall be submitted to the Control Officer with the 

Dust Control Block Permit application. 

b. A description or map of the owner’s and/or operator’s service areas and a list 

of all sites that are 0.10 acre (4,356 square feet) or greater, including the 

location and size of each site, shall be submitted to the Control Officer with 

the Dust Control Block Permit application. 

c. For any project that is 0.10 acre (4,356 square feet) or greater and not listed in 

the Dust Control Block Permit application, the applicant shall notify the 

Control Officer in writing at least three working days prior to commencing the 

dust-generating operation. The notice shall include the site location, size, type 

of activity, and start date.

404.3 The Dust Control Block Permit will cover crews that work for the municipalities, 

governmental agencies, and utilities, including subcontractors. However, 

municipalities, governmental agencies, and utilities shall retain overall authority 

for dust control on the project. 

405 APPROVAL OR DENIAL OF PERMIT APPLICATIONS FOR DUSTGENERATING OPERATIONS: The Control Officer shall take final action on a Dust 

Control permit application, a Dust Control permit revision, or a Dust Control Block 

Permit within 14 calendar days of the filing of the complete application. The Control 

Officer shall notify the applicant in writing of his approval or denial. 

406 TERMS FOR PERMITS FOR DUST-GENERATING OPERATIONS: A Dust 

Control permit issued according to this rule shall be issued for a period of one year from 

the date of issuance. Should the project last longer than one year from the date the permit 

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was issued, the permittee shall re-apply for a Dust Control Permit at least 14 calendar 

days prior to the expiration date of the original permit. For the purpose of this section, a 

permit is considered expired, if a permit renewal is not applied for at least 14 calendar 

days prior to the expiration date of the original permit. 

407 DEFACING, ALTERING, FORGING, COUNTERFEITING, OR FALSIFYING 

PERMITS FOR DUST-GENERATING OPERATIONS: A person shall not willfully 

deface, alter, forge, counterfeit, or falsify any Dust Control permit issued under the 

provisions of this rule. 

408 FEES FOR PERMITS FOR DUST-GENERATING OPERATIONS: No Dust 

Control permit is valid until the applicable Dust Control permit fee has been received and 

until the Dust Control permit is issued by the Control Officer.

409 POSTING OF PERMITS FOR DUST-GENERATING OPERATIONS: A Dust 

Control permit and a Dust Control Plan, as approved by the Control Officer, shall be 

posted in a conspicuous location at the work site, within on-site equipment, or in an onsite vehicle, or shall otherwise be kept available on-site at all times.

410 COMPLIANCE SCHEDULE: The newly amended provisions of this rule become 

effective upon adoption of this rule. An owner and/or operator of a dust-generating

operation subject to this rule shall meet all applicable provisions of this rule upon 

adoption of the newly amended provisions of this rule and according to the following 

schedule:

410.1 Basic Dust Control Training Class: No later than December 31, 2008, a site 

superintendent or other designated on-site representative of the permit holder and 

water truck and water pull drivers for each site shall have successfully completed 

the Basic Dust Control Training Class, as described in Section 309.1 of this rule. 

410.2 Dust Control Coordinator: No later than June 30, 2008, any site and/or any 

contiguous site under common control of five acres or more of disturbed surface 

area subject to a permit shall, at all times during primary dust-generating

operations related to the purposes for which the Dust Control permit was 

obtained, have on-site at least one individual designated by the permit holder as a 

Dust Control Coordinator, as described in Section 310 of this rule. 

SECTION 500 – MONITORING AND RECORDS

501 COMPLIANCE DETERMINATION: To determine compliance with the visible 

emissions requirements in Section 303 of this rule and with the stabilization requirements 

in Section 304 of this rule, the following test methods shall be followed: 

501.1 Opacity Observations: 

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a. Dust-Generating Operations: Opacity observations of dust-generating

operations shall be conducted in accordance with Appendix C, Section 3 

(Visual Opacity Determination of Emissions from Dust-Generating 

Operations) of these rules.

b. Unpaved Parking Lot: Opacity observations of any unpaved parking lot shall 

be conducted in accordance with Appendix C, Section 2.1 (Test Methods for 

Stabilization for Unpaved Roads and Unpaved Parking Lots) of these rules.

c. Unpaved Haul/Access Road: Opacity observations of any unpaved 

haul/access road (whether at a work site that is under construction or at a work 

site that is temporarily or permanently inactive) shall be conducted in 

accordance with Appendix C, Section 2.1 (Test Methods for Stabilization for 

Unpaved Roads and Unpaved Parking Lots) of these rules. 

d. Visible Emissions Beyond the Property Line: Opacity observations of any 

visible emissions beyond the property line shall be conducted in accordance 

with EPA Reference Method 22.

501.2 Stabilization Observations: 

a. Unpaved Parking Lot: Stabilization observations for unpaved parking lots 

shall be conducted in accordance with Appendix C, Section 2.1 (Test Methods 

for Stabilization for Unpaved Roads and Unpaved Parking Lots) of these 

rules. When more than one test method is permitted for a determination, an 

exceedance of the limits established in this rule determined by any of the 

applicable test methods shall constitute a violation of this rule.

b. Unpaved Haul/Access Road: Stabilization observations for unpaved haul/ 

access roads (whether at a work site that is under construction or at a work site 

that is temporarily or permanently inactive) shall be conducted in accordance 

with Appendix C, Section 2.1 (Test Methods for Stabilization for Unpaved 

Roads and Unpaved Parking Lots) of these rules. When more than one test 

method is permitted for a determination, an exceedance of the limits established in this rule determined by any of the applicable test methods shall 

constitute a violation of this rule. 

c. Disturbed Surface Area: Stabilization observations for any disturbed surface 

area on which no activity is occurring (whether at a work site that is under 

construction, at a work site that is temporarily or permanently inactive) shall

be conducted in accordance with at least one of the techniques described in

Section 501.2(c)(1) through Section 501.2(c)(7) below, as applicable. The 

owner and/or operator of such inactive disturbed surface area shall be 

considered in violation of this rule if such inactive disturbed surface area is 

not maintained in a manner that meets at least one of the standards described 

in Section 304.3 of this rule, as applicable. 

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(1) Appendix C, Section 2.3 (Test Methods for Stabilization: Soil Crust 

Determination: the Drop Ball Test) of these rules for a soil crust; or 

(2) Appendix C, Section 2.4 (Test Methods for Stabilization: Determination 

of Threshold Friction Velocity [TFV]: Sieving Field Procedure) of these 

rules for threshold friction velocity (TFV) corrected for non-erodible 

elements of 100 cm/second or higher; or 

(3) Appendix C, Section 2.5 (Test Methods for Stabilization: Determination 

of Flat Vegetative Cover) of these rules for flat vegetation cover (i.e., 

attached [rooted] vegetation or unattached vegetative debris lying on the 

surface with a predominant horizontal orientation that is not subject to 

movement by wind) that is equal to at least 50%; or

(4) Appendix C, Section 2.6 (Test Methods for Stabilization: Determination 

of Standing Vegetative Cover) of these rules for standing vegetation cover 

(i.e., vegetation that is attached [rooted] with a predominant vertical 

orientation) that is equal to or greater than 30%; or 

(5) Appendix C, Section 2.6 (Test Methods for Stabilization: Determination 

of Standing Vegetative Cover) of these rules for standing vegetation cover 

(i.e., vegetation that is attached [rooted] with a predominant vertical 

orientation) that is equal to or greater than 10% and where the threshold 

friction velocity is equal to or greater than 43 cm/second when corrected 

for non-erodible elements; or 

(6) Appendix C, Section 2.7 (Test Methods for Stabilization: Rock Test 

Method) of these rules for a percent cover that is equal to or greater than 

10%, for non-erodible elements; or

(7) An alternative and equivalent test method approved in writing by the 

Control Officer and the Administrator. 

502 RECORDKEEPING:

502.1 Any person who conducts dust-generating operations that require a Dust Control 

Plan shall keep a written record of self-inspection on each day dust-generating

operations are conducted. Self-inspection records shall include daily inspections 

for crusted or damp soil, trackout conditions and clean-up measures, daily water 

usage for dust control measures, and dust suppressant application. Such written 

record shall also include the following information: 

a. Method, frequency, and intensity of application or implementation of the 

control measures;

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b. Method, frequency, and amount of water application to the site; 

c. Street sweeping frequency;

d. Types of surface treatments applied to and maintenance of trackout control 

devices, gravel pads, fences, wind barriers, and tarps;

e. Types and results of test methods conducted; 

f. If contingency control measures are implemented, actual application or implementation of contingency control measures and why contingency control 

measures were implemented;

g. List of subcontractors’ names and registration numbers updated when changes 

are made; and

h. Names of employee(s) who successfully completed dust control training 

class(es) required by Section 309 of this rule, date of the class(es) that such 

employee(s) successfully completed, and name of the agency/representative 

who conducted such class(es). 

502.2 Any person who conducts dust-generating operations that do not require a Dust 

Control Plan shall compile and retain records (including records on any street 

sweeping, water applications, and maintenance of trackout control devices, gravel 

pads, fences, wind barriers, and tarps) that provide evidence of control measure 

application, by indicating the type of treatment or control measure, extent of 

coverage, and date applied.

502.3 Upon verbal or written request by the Control Officer, the log or the records and 

supporting documentation shall be provided as soon as possible but no later than 

48 hours, excluding weekends. If the Control Officer is at the site where requested 

records are kept, records shall be provided without delay. 

503 RECORDS RETENTION: Any person who conducts dust-generating operations that 

require a Dust Control Plan shall retain copies of approved Dust Control Plans, control 

measures implementation records, and all supporting documentation for at least six 

months following the termination of the dust-generating operation and for at least two 

years from the date such records were initiated. If a person has obtained a Title V Permit 

and is subject to the requirements of this rule, then such person shall retain records 

required by this rule for at least five years from the date such records are established.

504 TEST METHODS INCORPORATED BY REFERENCE: The test methods listed in 

this section are incorporated by reference. These incorporations by reference include no 

future editions or amendments. Copies of the test methods listed in this section are 

available for review at the Maricopa County Air Quality Department, 1001 North Central 

Avenue, Phoenix, AZ, 85004. 

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504.1 ASTM Method C136-06 (“Standard Test Method for Sieve Analysis of Fine and

Coarse Aggregates”), 2006 edition. 

504.2 ASTM Method D2216-05 (“Standard Test Method for Laboratory Determination 

of Water [Moisture] Content of Soil and Rock by Mass”), 2005 edition. 

504.3 ASTM Method D1557-02e1 (“Test Method for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3

)”), 2002 

edition. 

504.4 EPA Reference Method 22 (“Visual Determination of Fugitive Emissions from

Material Sources and Smoke Emissions from Flares”), 2000 edition. 

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REGULATION III – CONTROL OF AIR CONTAMINANTS

RULE 310.01 

FUGITIVE DUST FROM NON-TRADITIONAL SOURCES OF FUGITIVE DUST

INDEX

SECTION 100 – GENERAL

101 PURPOSE

102 APPLICABILITY

103 EXEMPTIONS

SECTION 200 – DEFINITIONS

201 ANIMAL WASTE

202 AREA A

203 AREA ACCESSIBLE TO THE PUBLIC

204 BULK MATERIAL

205 CHEMICAL/ORGANIC STABILIZER

206 CONTROL MEASURE

207 DISTURBED SURFACE AREA

208 DUST-GENERATING OPERATION

209 DUST SUPPRESSANT

210 EMERGENCY

211 EMERGENCY ACTIVITY

212 FEED LANE ACCESS AREAS

213 FUGITIVE DUST

214 GRAVEL PAD

215 GRIZZLY

216 LIVESTOCK ACTIVITIES

217 MOTOR VEHICLE

218 NON-TRADITIONAL SOURCE OF FUGITIVE DUST

219 NORMAL FARM CULTURAL PRACTICE

220 OFF-ROAD VEHICLE

221 OPEN AREAS AND VACANT LOTS

222 OWNER AND/OR OPERATOR

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223 PAVE

224 PM10

225 PROPERTY LINE

NONATTAINMENT AREA

226 PUBLIC ROADWAYS

227 TRACKOUT/CARRYOUT

228 TRACKOUT CONTROL DEVICE

229 UNPAVED ACCESS CONNECTIONS

230 UNPAVED PARKING LOT

231 UNPAVED ROADWAY (INCLUDING ALLEYS)

232 VACANT LOT

SECTION 300 – STANDARDS

301 GENERAL REQUIREMENTS FOR NON-TRADITIONAL SOURCES OF 

FUGITIVE DUST

302 CONTROL MEASURES FOR NON-TRADITIONAL SOURCES OF 

FUGITIVE DUST

SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE)

SECTION 500 – MONITORING AND RECORDS

501 COMPLIANCE DETERMINATION

502 RECORDKEEPING

503 RECORDS RETENTION

Page 250 of 720
Adopted 06/16/99 

Revised 02/16/00 

Revised 02/17/05 

Revised 03/26/08 

Revised 01/27/10 

MARICOPA COUNTY

AIR POLLUTION CONTROL REGULATIONS

REGULATION III – CONTROL OF AIR CONTAMINANTS

RULE 310.01 

FUGITIVE DUST FROM NON-TRADITIONAL SOURCES OF FUGITIVE DUST

SECTION 100 – GENERAL

101 PURPOSE: To minimize the amount of fugitive dust entrained into the ambient air from 

non-traditional sources of fugitive dust by requiring measures to prevent, reduce, or 

mitigate fugitive dust emissions.

102 APPLICABILITY:

102.1 The provisions of this rule shall apply to non-traditional sources of fugitive dust 

that are conducted in Maricopa County, except for those dust-generating

operations listed in Section 103 of this rule. 

102.2 The provisions of this rule shall apply to any open area or vacant lot that is not 

defined as agricultural land and is not used for agricultural purposes according to 

Arizona Revised Statutes (A.R.S.) § 42-12151 and A.R.S. § 42-12152. 

103 EXEMPTIONS:

103.1 The provisions of this rule shall not apply to normal farm cultural practices 

according to A.R.S. § 49-457 and A.R.S. § 49-504.4. 

103.2 The provisions of this rule shall not apply to dust-generating operations that are 

subject to the standards and/or requirements described in Rule 310: Fugitive Dust 

from Dust-Generating Operations of these rules. 

103.3 The provisions of this rule shall not apply to emergency activities that may disturb 

the soil conducted by any utility or government agency in order to prevent public 

injury or to restore critical utilities to functional status.

103.4 The provisions of this rule do not apply to the establishment of initial landscapes 

without the use of mechanized equipment, conducting landscape maintenance 

without the use of mechanized equipment, and playing on or maintaining a field 

used for non-motorized sports. However, establishing initial landscapes without 

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the use of mechanized equipment and conducting landscape maintenance without 

the use of mechanized equipment shall not include grading, or trenching, 

performed to establish initial landscapes or to redesign existing landscapes. 

SECTION 200 – DEFINITIONS: For the purpose of this rule, the following definitions apply, 

in addition to those definitions found in Rule 100: General Provisions and Definitions of these 

rules. In the event of any inconsistency between any of the Maricopa County air pollution control 

rules, the definitions in this rule take precedence. 

201 ANIMAL WASTE – Any animal excretions and mixtures containing animal excretions.

202 AREA A – As defined in A.R.S. § 49-541(1), the area in Maricopa County delineated as 

follows: 

Township 8 North, Range 2 East and Range 3 East 

Township 7 North, Range 2 West through Range 5 East 

Township 6 North, Range 5 West through Range 6 East 

Township 5 North, Range 5 West through Range 7 East 

Township 4 North, Range 5 West through Range 8 East 

Township 3 North, Range 5 West through Range 8 East 

Township 2 North, Range 5 West through Range 8 East 

Township 1 North, Range 5 West through Range 7 East 

Township 1 South, Range 5 West through Range 7 East 

Township 2 South, Range 5 West through Range 7 East

Township 3 South, Range 5 West through Range 1 East 

Township 4 South, Range 5 West through Range 1 East 

203 AREA ACCESSIBLE TO THE PUBLIC – Any paved parking lot or paved roadway 

that can be entered or used for public travel primarily for purposes unrelated to the dustgenerating operation. 

204 BULK MATERIAL – Any material, including, but not limited to, the following 

materials that are capable of producing fugitive dust: 

204.1 Earth. 

204.2 Rock. 

204.3 Silt. 

204.4 Sediment. 

204.5 Sand. 

204.6 Gravel. 

204.7 Soil. 

204.8 Fill. 

204.9 Aggregate less than 2 inches in length or diameter (i.e., aggregate base course 

[ABC]). 

204.10 Dirt. 

204.11 Mud. 

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204.12 Demolition debris. 

204.13 Cotton. 

204.14 Trash. 

204.15 Cinders. 

204.16 Pumice. 

204.17 Saw dust. 

204.18 Feeds. 

204.19 Grains. 

204.20 Fertilizers. 

204.21 Fluff from shredders. 

204.22 Dry concrete. 

205 CHEMICAL/ORGANIC STABILIZER – Any non-toxic chemical or organic dust 

suppressant, other than water, which meets any specifications, criteria, or tests required 

by any federal, state, or local water agency and is not prohibited for use by any applicable 

law, rule, or regulation. 

206 CONTROL MEASURE – A technique, practice, or procedure used to prevent or 

minimize the generation, emission, entrainment, suspension, and/or airborne transport of 

fugitive dust. 

207 DISTURBED SURFACE AREA – A portion of the earth's surface or material placed on 

the earth’s surface that has been physically moved, uncovered, destabilized, or otherwise 

modified from its undisturbed native condition if the potential for the emission of fugitive 

dust is increased by the movement, destabilization, or modification. 

208 DUST-GENERATING OPERATION – Any activity capable of generating fugitive 

dust, including but not limited to, the following activities:

208.1 Land clearing, maintenance, and land cleanup using mechanized equipment.

208.2 Earthmoving.

208.3 Weed abatement by discing or blading. 

208.4 Excavating. 

208.5 Construction. 

208.6 Demolition. 

208.7 Bulk material handling (e.g., bulk material hauling and/or transporting, bulk 

material stacking, loading, and unloading operations). 

208.8 Storage and/or transporting operations (e.g., open storage piles). 

208.9 Operation of any outdoor equipment. 

208.10 Operation of motorized machinery. 

208.11 Establishing and/or using staging areas, parking areas, material storage areas, or 

access routes to and from a site. 

208.12 Establishing and/or using unpaved haul/access roads to, from, and within a site. 

208.13 Disturbed surface areas associated with a site. 

208.14 Installing initial landscapes using mechanized equipment. 

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209 DUST SUPPRESSANT – Water, hygroscopic material, solution of water and chemical 

surfactant, foam, non-toxic chemical stabilizer, or any other dust palliative, which is not 

prohibited for ground surface application by the Environmental Protection Agency (EPA) 

or the Arizona Department of Environmental Quality (ADEQ), or any applicable law, 

rule, or regulation, as a treatment material for reducing fugitive dust emissions. 

210 EMERGENCY – A situation arising from sudden and reasonably unforeseeable events 

beyond the control of the source, including acts of God, which situation requires 

immediate corrective action to restore normal operation, and that causes the source to 

exceed a limitation in this rule, due to unavoidable increases in emissions attributable to 

the emergency. An emergency shall not include any noncompliance due to improperly 

designed equipment, lack of preventative maintenance, careless or improper operation, or 

operator error.

211 EMERGENCY ACTIVITY – Repairs that are a result of an emergency which prevents 

or hinders the provision of electricity, the distribution/collection of water, and the 

availability of other utilities due to unforeseen circumstances that are beyond the routine 

maintenance and repair due to normal wear conducted by a utility or municipality. 

212 FEED LANE ACCESS AREAS – Roads providing access from the feed preparation 

areas to and including feed lane areas at a livestock activity. These access roads are 

typically used to distribute feed from feed trucks to the animals. 

213 FUGITIVE DUST – The particulate matter not collected by a capture system, that is 

entrained in the ambient air and is caused from human and/or natural activities, such as, 

but not limited to, movement of soil, vehicles, equipment, blasting, and wind. For the 

purpose of this rule, fugitive dust does not include particulate matter emitted directly 

from the exhaust of motor vehicles and other internal combustion engines, from portable 

brazing, soldering, or welding equipment, and from piledrivers, and does not include 

emissions from process and combustion sources that are subject to other rules in 

Regulation III (Control of Air Contaminants) of these rules.

214 GRAVEL PAD – A layer of washed gravel, rock, or crushed rock that is at least one 

inch or larger in diameter, that is maintained at the point of intersection of an area 

accessible to the public and a site exit to dislodge mud, dirt, and/or debris from the tires 

of motor vehicles, prior to leaving the site. Minimum dimensions must be 30 feet wide by 

3 inches deep and 50 feet long or the length of the longest motor vehicle, whichever is 

greater. If an unpaved surface exit does not have adequate width to install a 30-foot wide 

gravel pad, then the width of the gravel pad must cover the full width of the unpaved 

surface exit and such shorter width shall be adequate to prevent trackout. 

215 GRIZZLY – A device (i.e., rails, pipes, or grates) used to dislodge mud, dirt, and/or 

debris from the tires and undercarriage of motor vehicles prior to leaving the work site. 

216 LIVESTOCK ACTIVITIES – Any activity directly related to feeding animals, 

displaying animals, racing animals, exercising animals, and/or for any other such activity

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including, but not limited to, livestock arenas, horse arenas, feed lots, and residential 

activities related to feeding or raising animals. 

217 MOTOR VEHICLE – A self-propelled vehicle for use on the public roads and 

highways of the State of Arizona and required to be registered under the Arizona State 

Uniform Motor Vehicle Act, including any non-motorized attachments, such as but not 

limited to, trailers or other conveyances which are connected to or propelled by the actual 

motorized portion of the vehicle. 

218 NON-TRADITIONAL SOURCE OF FUGITIVE DUST – A source of fugitive dust 

that is located at a source that does not require any permit under these rules. The 

following non-traditional sources of fugitive dust are subject to the standards and/or 

requirements described in Rule 310.01: Fugitive Dust from Non-Traditional Sources of 

Fugitive Dust of these rules: 

218.1 Vehicle use in open areas and vacant lots.

218.2 Open areas and vacant lots.

218.3 Unpaved parking lots.

218.4 Unpaved roadways (including alleys).

218.5 Livestock activities.

218.6 Erosion-caused deposition of bulk materials onto paved surfaces. 

218.7 Easements, rights-of-way, and access roads for utilities (electricity, natural gas, 

oil, water, and gas transmission).

219 NORMAL FARM CULTURAL PRACTICE – All activities by the owner, lessee, 

agent, independent contractor, and/or supplier conducted on any facility for the 

production of crops and/or nursery plants. Disturbances of the field surface caused by 

turning under stalks, tilling, leveling, planting, fertilizing, or harvesting are included in 

this definition.

220 OFF-ROAD VEHICLE – Any self-propelled conveyance specifically designed for offroad use, including, but not limited to, off-road or all-terrain equipment, trucks, cars, 

motorcycles, motorbikes, or motorbuggies. 

221 OPEN AREAS AND VACANT LOTS – Any of the following described in Sections 

221.1 through 221.3 of this rule. For the purpose of this rule, vacant portions of 

residential or commercial lots that are immediately adjacent and owned and/or operated 

by the same individual or entity are considered one vacant open area or vacant lot. 

221.1 An unsubdivided or undeveloped tract of land adjoining a developed or a partially 

developed residential, industrial, institutional, governmental, or commercial area. 

221.2 A subdivided residential, industrial, institutional, governmental, or commercial lot 

that contains no approved or permitted buildings or structures of a temporary or 

permanent nature.

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221.3 A partially developed residential, industrial, institutional, governmental, or 

commercial lot.

222 OWNER AND/OR OPERATOR – Any person who owns, leases, operates, controls, or 

supervises a fugitive dust source subject to the requirements of this rule. 

223 PAVE – To apply and maintain asphalt, concrete, or other similar material to a roadway 

surface (i.e., asphaltic concrete, concrete pavement, chip seal, or rubberized asphalt).

224 PM10 NONATTAINMENT AREA – An area designated by the EPA as exceeding 

National Ambient Air Quality Standards based upon data collected through air quality 

monitoring. The geographical boundary of Maricopa County's PM10 nonattainment area 

is defined as the rectangle determined by and including the following townships and 

ranges: T6N, R3W; T6N, R7E; T2S, R3W; T2S, R7E; and T1N, R8E. Maricopa County's 

PM10 nonattainment area includes the following cities: Surprise, Peoria, Glendale, 

Phoenix, Scottsdale, Tempe, Mesa, Gilbert, Chandler, Avondale, Buckeye, and 

Goodyear. 

225 PROPERTY LINE – The boundaries of an area in which either a person causing the 

emission or a person allowing the emission has the legal use or possession of the 

property. Where such property is divided into one or more sub-tenancies, the property 

line(s) shall refer to the boundaries dividing the areas of all sub-tenancies.

226 PUBLIC ROADWAYS – Any roadways that are open to public travel. 

227 TRACKOUT/CARRYOUT – Any and all bulk materials that adhere to and 

agglomerate on the surfaces of motor vehicles, haul trucks, and/or equipment (including 

tires) and that have fallen or been deposited onto an area accessible to the public.

228 TRACKOUT CONTROL DEVICE – A gravel pad, grizzly, wheel wash system, or a 

paved area, located at the point of intersection of an unpaved area and an area accessible 

to the public that controls or prevents vehicular trackout. 

229 UNPAVED ACCESS CONNECTIONS – Any unpaved road connection with a paved 

public road.

230 UNPAVED PARKING LOT – Any area that is not paved and that is used for parking, 

maneuvering, material handling, or storing motor vehicles and equipment. An unpaved 

parking lot includes, but is not limited to, automobile impound yards, wrecking yards, 

automobile dismantling yards, salvage yards, material handling yards, and storage yards. 

For the purpose of this rule, maneuvering shall not include military maneuvers or 

exercises conducted on federal facilities.

231 UNPAVED ROADWAY (INCLUDING ALLEYS) – A road that is not paved and that 

is owned by federal, state, county, municipal, or other governmental or quasigovernmental agencies. For the purpose of this rule, an unpaved roadway (including 

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alleys) is not a horse trail, hiking path, bicycle path, or other similar path used exclusively 

for purposes other than travel by motor vehicles. An unpaved roadway (including alleys) 

includes designated or opened trail systems and service roads regardless of surface 

composition. 

232 VACANT LOT – The definition of vacant lot is included in Section 221: Definition of 

Open Areas and Vacant Lots of this rule. 

SECTION 300 – STANDARDS

301 GENERAL REQUIREMENTS FOR NON-TRADITIONAL SOURCES OF 

FUGITIVE DUST:

301.1 An owner and/or operator of a non-traditional source of fugitive dust shall be 

subject to the standards and/or requirements described in this rule. Failure to 

comply with any such standards and/or requirements is deemed a violation of this 

rule.

301.2 When an owner and/or operator of a non-traditional source of fugitive dust fails to 

stabilize disturbed surfaces of vacant lots as required in Sections 302.4 and 302.5 

of this rule, the Control Officer shall commence enforcement of those rule 

provisions regarding the stabilization of disturbed surfaces of vacant lots that 

include the following: 

a. Reasonable written notice to the owner or the owner’s authorized agent or the 

owner’s statutory agent that the unpaved disturbed surface of a vacant lot is 

required to be stabilized. The notice shall be given not less than 30 days 

before the day set for compliance and shall include a legal description of the 

property and the estimated cost to the county for the stabilization if the owner 

does not comply. The notice shall be either personally served or mailed by 

certified mail to the owner’s statutory agent, to the owner at the owner’s last 

known address or to the address to which the tax bill for the property was last 

mailed.

b. Authority to enter upon any said land/property where such non-traditional 

source of fugitive dust exists/where such disturbed surface area exists and to 

take remedial and/or corrective action as may be deemed appropriate to cope 

with and relieve, reduce, remedy, and/or stabilize such non-traditional source 

of fugitive dust/such disturbed surface area. Any cost incurred in connection 

with any such remedial or corrective action by the Maricopa County Air 

Quality Department or any person acting for the Maricopa County Air Quality 

Department shall be reimbursed by the owner and/or operator of such nontraditional source of fugitive dust. 

302 CONTROL MEASURES FOR NON-TRADITIONAL SOURCES OF FUGITIVE 

DUST:

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302.1 When engaged in the activities described in Sections 302.4 through 302.10 of this 

rule, the owner and/or operator of a non-traditional source of fugitive dust shall 

implement control measures as described in Sections 302.4 through 302.10 of this 

rule, as applicable.

302.2 Control measures shall be implemented to meet the visible emissions 

requirements and stabilization requirements, as required for each activity, and to 

achieve the compliance determination in Section 501 of this rule. 

302.3 Failure to implement control measures as required by this rule, as applicable, 

and/or failure to maintain stabilization of a non-traditional source of fugitive dust 

with adequate surface crusting to prevent wind erosion as measured by the 

requirements in this rule shall be deemed a violation of this rule. 

302.4 Vehicle Use in Open Areas and Vacant Lots: The owner and/or operator of a 

non-traditional source of fugitive dust that involves vehicle use in open areas and 

vacant lots shall be subject to the requirements described in Section 302.4(a) of 

this rule and, unless otherwise specified and/or required, shall comply with the 

control measures described in Section 302.4(b) of this rule and the additional 

requirements described in Section 302.4(c) of this rule. 

a. Visible Emissions Requirements and Stabilization Requirements:

(1) The owner and/or operator of a non-traditional source of fugitive dust 

that involves vehicle use in open areas and vacant lots shall not cause or 

allow visible emissions of particulate matter, including fugitive dust, 

beyond the property line within which the emissions are generated. 

(2) The owner and/or operator of a non-traditional source of fugitive dust 

that involves vehicle use in open areas and vacant lots shall stabilize the 

open areas and vacant lots on which vehicles are used to meet one of the 

following stabilization limitations: 

(a) A soil crust; or 

(b) A threshold friction velocity (TFV) corrected for non-erodible 

elements of 100 cm/second or higher; or 

(c) Flat vegetative cover (i.e., attached [rooted] vegetation or 

unattached vegetative debris lying on the surface with a 

predominant horizontal orientation that is not subject to movement 

by wind) that is equal to at least 50%; or 

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(d) Standing vegetative cover (i.e., vegetation that is attached [rooted] 

with a predominant vertical orientation) that is equal to or greater 

than 30%; or 

(e) Standing vegetative cover (i.e., vegetation that is attached [rooted] 

with a predominant vertical orientation) that is equal to or greater 

than 10% and where the threshold friction velocity is equal to or 

greater than 43 cm/second when corrected for non-erodible 

elements; or

(f) A percent cover that is equal to or greater than 10% for nonerodible elements; or

(g) An alternative test method approved in writing by the Control 

Officer and the Administrator.

b. Control Measures:

(1) Prevent motor vehicle and/or off-road vehicle trespassing, parking, 

and/or access by installing barriers, curbs, fences, gates, posts, shrubs, 

trees, or other effective control measures;

(2) Prevent motor vehicle and/or off-road vehicle trespassing, parking, 

and/or access by posting that consists of one of the following: 

(a) A sign written in compliance with ordinance(s) of local, County, 

State, or Federal sign standards.

(b) An order of a government land management agency. 

(c) Most current maps approved by a government land management 

agency.

(d) Virtual posting a government land management agency.

(3) Uniformly apply and maintain surface gravel or chemical/organic 

stabilizers to all areas disturbed by motor vehicles and/or off-road 

vehicles; or

(4) Apply and maintain an alternative control measure approved in writing 

by the Control Officer and the Administrator.

c. Additional Requirements:

(1) If open areas and vacant lots are 0.10 acre (4,356 square feet) or larger 

and have a cumulative of 500 square feet or more that are disturbed by 

Page 259 of 720
being driven over and/or used by motor vehicles, by off-road vehicles, or 

for material dumping, then the owner and/or operator shall implement 

one or more of the control measures described in Section 302.4(b) of this 

rule within 60 calendar days following the initial discovery by the 

Control Officer of disturbance or vehicle use on open areas and vacant 

lots.

(2) Within 30 calendar days following the initial discovery by the Control 

Officer of disturbance or vehicle use on open areas and vacant lots, the 

owner and/or operator shall provide in writing to the Control Officer a 

description and date of the control measure(s) to be implemented to 

prevent such disturbance or vehicle use on open areas and vacant lots. 

(3) The owner and/or operator shall implement all control measures 

necessary to limit the disturbance or vehicle use on open areas and 

vacant lots in accordance with the requirements of this rule. Control 

measure(s) shall be considered effectively implemented when the open 

areas and vacant lots meet the requirements described in Section 

302.4(a) of this rule. 

(4) Once a control measure in Section 302.4(b) of this rule has been 

effectively implemented, then such open area or vacant lot is subject to 

the requirements of Section 302.5: Open Areas and Vacant Lots of this 

rule.

(5) Use of or parking on open areas and vacant lots by the owner and/or 

operator of such open areas and vacant lots shall not be considered 

vehicle use in open areas and vacant lots and shall not be subject to the 

requirements of Section 302.4(b) and sections 302.4(c)(1) through 

302.4(c)(4) of this rule. Such open areas and vacant lots shall still meet 

the requirements described in Section 302.5 of this rule. 

(6) Establishing initial landscapes without the use of mechanized equipment 

or conducting landscape maintenance without the use of mechanized 

equipment shall not be considered vehicle use in open areas and vacant 

lots and shall not be subject to the requirements of Section 302.4(b) and 

Sections 302.4(c)(1) through 302.4(c)(4) of this rule. Such open areas 

and vacant lots shall still meet the requirements described in Section 

302.5 of this rule. 

302.5 Open Areas and Vacant Lots: The owner and/or operator of a non-traditional 

source of fugitive dust that involves open areas and vacant lots shall be subject to 

the requirements described in Section 302.5(a) of this rule and, unless otherwise 

specified and/or required, shall comply with the control measures described in 

Section 302.5(b) of this rule and the additional requirements described in Section 

302.5(c) of this rule. 

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a. Visible Emissions Requirements and Stabilization Requirements:

(1) The owner and/or operator of a non-traditional source of fugitive dust 

that involves open areas and vacant lots shall not cause or allow visible 

emissions of particulate matter, including fugitive dust, beyond the 

property line within which the emissions are generated. 

(2) The owner and/or operator of a non-traditional source of fugitive dust 

that involves open areas and vacant lots shall stabilize the open areas 

and vacant lots to meet one of the following stabilization limitations: 

(a) A soil crust; or 

(b) A threshold friction velocity (TFV) corrected for non-erodible 

elements of 100 cm/second or higher; or 

(c) Flat vegetative cover (i.e., attached [rooted] vegetation or 

unattached vegetative debris lying on the surface with a 

predominant horizontal orientation that is not subject to movement 

by wind) that is equal to at least 50%; or

(d) Standing vegetative cover (i.e., vegetation that is attached [rooted] 

with a predominant vertical orientation) that is equal to or greater 

than 30%; or 

(e) Standing vegetative cover (i.e., vegetation that is attached [rooted] 

with a predominant vertical orientation) that is equal to or greater 

than 10% and where the threshold friction velocity is equal to or 

greater than 43 cm/second when corrected for non-erodible 

elements; or

(f) A percent cover that is equal to or greater than 10% for nonerodible elements; or

(g) An alternative test method approved in writing by the Control 

Officer and the Administrator.

b. Control Measures:

(1) Establish vegetative ground cover on all disturbed surface areas. Such 

control measure(s) must be maintained and reapplied, if necessary. 

Stabilization shall be achieved, per this control measure, within eight 

months after the control measure has been implemented; or 

(2) Apply a dust suppressant to all disturbed surface areas; or 

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(3) Restore all disturbed surface areas within 60 calendar days following the 

initial discovery by the Control Officer of the disturbance, such that the 

vegetative ground cover and soil characteristics are similar to adjacent or 

nearby undisturbed native conditions. Such control measure(s) must be 

maintained and reapplied, if necessary. Stabilization shall be achieved, 

per such control measure, within eight months after such control 

measure has been implemented; or 

(4) Uniformly apply and maintain surface gravel; or 

(5) Apply and maintain an alternative control measure approved in writing 

by the Control Officer and the Administrator.

c. Additional Requirements:

(1) If open areas and vacant lots are 0.10 acre (4,356 square feet) or larger 

and have a cumulative of 500 square feet or more that are disturbed and 

if such disturbed area remains unoccupied, unused, vacant, or 

undeveloped for more than 15 days, then the owner and/or operator shall

implement one or more of the control measures described in Section 

302.5(b) of this rule within 60 calendar days following the initial 

discovery by the Control Officer of the disturbance on the open areas 

and vacant lots. 

(2) Within 30 calendar days following the initial discovery by the Control 

Officer of the disturbance on the open areas and vacant lots, the owner 

and/or operator shall provide in writing to the Control Officer a 

description and date of the control measure(s) to be implemented.

(3) Control measure(s) shall be considered effectively implemented when 

the disturbance on the open areas and vacant lots meets the requirements

described in Section 302.5(a) of this rule. 

302.6 Unpaved Parking Lots: The owner and/or operator of a non-traditional source of 

fugitive dust that involves unpaved parking lots shall be subject to the 

requirements described in Section 302.6(a) of this rule and, unless otherwise 

specified and/or required, shall comply with one of the control measures 

described in Section 302.6(b) of this rule and the additional requirements 

described in Section 302.6(c) of this rule. 

a. Visible Emissions Requirements and Stabilization Requirements:

(1) The owner and/or operator of a non-traditional source of fugitive dust 

that involves unpaved parking lots shall not cause or allow visible 

Page 262 of 720
emissions of particulate matter, including fugitive dust, beyond the 

property line within which the emissions are generated. 

(2) The owner and/or operator of a non-traditional source of fugitive dust 

that involves unpaved parking lots shall not cause or allow visible 

fugitive dust emissions to exceed 20% opacity and shall not allow silt 

loading equal to or greater than 0.33 oz/ft2. However, if silt loading is 

equal to or greater than 0.33 oz/ft2

, then the owner and/or operator shall 

not allow the silt content to exceed 8%. 

b. Control Measures:

(1) For parking, maneuvering, ingress, and egress areas at developments 

other than residential buildings with four or fewer units that are utilized 

for more than 35 days during the calendar year: 

(a) Install and maintain pavement; or 

(b) Apply dust suppressant other than water and install, maintain, and 

use a suitable trackout control device that controls and prevents 

trackout and/or removes particulate matter from tires and the 

exterior surfaces of motor vehicles that traverse the site; or

(c) Uniformly apply and maintain surface gravel.

(2) For parking, maneuvering, ingress, and egress areas at developments 

other than residential buildings with four or fewer units that are utilized 

for 35 days or less during the calendar year: 

(a) Install and maintain one of the control measures listed in Section 

302.6(b)(1) of this rule; or 

(b) Apply water and install, maintain, and use a suitable trackout 

control device that controls and prevents trackout and/or removes 

particulate matter from tires and the exterior surfaces of motor 

vehicles that traverse the site.

(3) For parking, maneuvering, ingress, and egress areas 3,000 square feet or 

more in size at residential buildings with four or fewer units install and 

maintain a paving or stabilization method authorized by the city, town, 

or county by code, ordinance, or permit. 

c. Additional Requirements:

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(1) Control measure(s) shall be considered effectively implemented when 

the unpaved parking lot meets the requirements described in Section 

302.6(a) of this rule. 

(2) If trackout occurs, the owner and/or operator shall repair and/or replace 

the control measure(s) and shall clean-up immediately such trackout 

from areas accessible to the public including curbs, gutters, and 

sidewalks when trackout extends a cumulative distance of 25 linear feet 

or more and at the end of the day for all other trackout. 

302.7 Unpaved Roadways (Including Alleys): The owner and/or operator of unpaved 

roadways (including alleys) that are used by 150 vehicle trips or more per day in 

the PM10 nonattainment area shall be subject to the requirements described in 

Section 302.7(a) of this rule and, unless otherwise specified and/or required, shall

comply with one of the control measures described in Section 302.7(b) of this rule 

and the additional requirements described in Section 302.7(c) of this rule. 

a. Visible Emissions Requirements and Stabilization Requirements: The 

owner and/or operator of unpaved roadways (including alleys) shall not cause 

or allow visible fugitive dust emissions to exceed 20% opacity and shall not 

allow silt loading equal to or greater than 0.33 oz/ft2

. However, if silt loading 

is equal to or greater than 0.33 oz/ft2

, then the owner and/or operator shall not 

allow the silt content to exceed 6%.

b. Control Measures:

(1) Pave;

(2) Apply dust suppressants other than water; or 

(3) Uniformly apply and maintain surface gravel.

c. Additional Requirements:

(1) If a person allows 150 vehicle trips or more per day on an unpaved 

roadway (including an alley) in the PM10 nonattainment area, then such 

person shall first implement one of the control measures described in 

Section 302.7(b) of this rule. 

(2) A person, who allows 150 vehicle trips or more per day on an unpaved 

roadway (including an alley) in the PM10 nonattainment area, shall be

responsible for conducting vehicle counts/traffic counts to determine if 

150 vehicle trips or more per day occur on an unpaved roadway 

(including an alley). A traffic count shall measure vehicular traffic over 

a 48-hour period, which may consist of two non-consecutive 24-hour 

periods. Vehicular traffic shall be measured continuously during each 

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24-hour period. The average vehicle counts/traffic counts on the highest 

trafficked days shall be recorded and provided to the Control Officer in 

writing within 60 days of verbal or written request by the Control 

Officer.

(3) Control measure(s) shall be considered effectively implemented under 

the following conditions: 

(a) When the unpaved roadway (including an alley) meets the requirements described in Section 302.7(a) of this rule. 

(b) When one of the control measures described in Section 302.7(b) of 

this rule is implemented on 5 miles of unpaved roadways (including alleys) having vehicle traffic of 150 vehicle trips or more per 

day within one calendar year beginning in calendar year of 2008. If 

the control measure described in Section 302.7(b)(2) of this rule is 

implemented, the unpaved roadways (including alleys) must be 

maintained so as to comply with Appendix C of these rules. 

302.8 Livestock Activities: The owner and/or operator of a non-traditional source of 

fugitive dust that involves livestock activities shall be subject to the requirements 

described in Section 302.8(a) of this rule and, unless otherwise specified and/or 

required, shall comply with the control measures described in Section 302.8(b) of 

this rule and the additional requirements described in Section 302.8(c) of this rule. 

a. Visible Emissions Requirements:

(1) For unpaved access connections and unpaved feed lane access areas, the 

owner and/or operator shall not cause or allow visible fugitive dust 

emissions to exceed 20% opacity. 

(2) For corrals, pens, and arenas, the owner and/or operator shall not cause 

or allow visible fugitive dust emissions to exceed 20% opacity for a 

period aggregating more than three minutes in any 60-minute period. 

(3) The owner and/or operator shall not cause or allow visible emissions of 

particulate matter, including fugitive dust, beyond the property line 

within which the emissions are generated.

b. Control Measures: The owner and/or operator of a non-traditional source of 

fugitive dust that involves livestock activities shall implement the control 

measures described in this section of this rule. When selecting a control 

measure, the owner and/or operator may consider site-specific logistics of the 

livestock activities. When doing so, some control measures may be more 

reasonable to implement than others. Any control measure that is 

implemented must achieve the applicable standards and requirements 

Page 265 of 720
described in Sections 302.8(a) and (c) of this rule, as determined by the 

corresponding test methods, as applicable, and must achieve other applicable 

standards set forth in this rule. The owner and/or operator may submit a 

request to the Control Officer and the Administrator for the use of alternative 

control measure(s). The owner and/or operator may implement the alternative 

control measure only after the Control Officer and the Administrator have 

granted the petition.

(1) For unpaved access connections and unpaved feed lane access areas: 

(a) Apply water and install, maintain, and use a suitable trackout 

control device that controls and prevents trackout and/or removes 

particulate matter from tires and the exterior surfaces of motor 

vehicles that traverse the site;

(b) Apply and maintain pavement, gravel (maintained to a depth of 

four inches), or asphaltic roadbase; 

(c) Apply and maintain dust suppressants other than water; or 

(d) Limit vehicle trips to no more than 20 per day per road, limit 

vehicle speeds to no more than 15 miles per hour, and restrict 

public access to private roads by installing barriers, curbs, fences, 

gates, posts, or signs written in compliance with ordinance(s) of 

local, County, State, or Federal sign standards. 

(2) For bulk material hauling, including animal waste, off-site and crossing 

and/or accessing an area accessible to the public:

(a) Load all vehicles used to haul bulk material, including animal 

waste, such that the freeboard is not less than three inches; 

(b) Prevent spillage or loss of bulk material, including animal waste, 

from holes or other openings in the cargo compartment’s floor, 

sides, and/or tailgate(s); 

(c) Cover cargo compartment with a tarp or other suitable closure; and 

(d) Install, maintain, and use a suitable trackout control device that 

controls and prevents trackout and/or removes particulate matter 

from tires and the exterior surfaces of motor vehicles that traverse 

the site.

(3) For corrals, pens, and arenas: 

(a) Apply water;

Page 266 of 720
(b) Install shrubs and/or trees within 50 feet to 100 feet of corrals,

pens, and arenas; 

(c) Scrape and/or remove manure;

(d) Apply a fibrous layer (i.e., wood chips) in working areas; 

(e) Provide shaded areas; or 

(f) Apply and maintain an alternative control measure approved in 

writing by the Control Officer and the Administrator.

c. Additional Requirements:

(1) The owner and/or operator of livestock activities shall implement at least

one of the control measures from each of the following three sections of 

this rule, as applicable: Section 302.8(b)(1), Section 302.8(b)(2), and

Section 302.8(b)(3). In lieu of implementing at least one control measure 

from each of the following three sections of this rule, as applicable: 

Section 302.8(b)(1), Section 302.8(b)(2), and Section 302.8(b)(3), the 

owner and/or operator of livestock activities shall implement an 

alternative control measure approved in writing by the Control Officer 

and the Administrator. 

(2) Control measure(s) shall be considered effectively implemented when 

the livestock activities meet the requirements described in Section 

302.8(a) of this rule. 

(3) If trackout occurs, the owner and/or operator shall repair and/or replace 

the control measure(s) and shall clean up immediately such trackout 

from areas accessible to the public including curbs, gutters, and 

sidewalks when trackout extends a cumulative distance of 25 linear feet 

or more and at the end of the day for all other trackout. 

302.9 Erosion-Caused Deposition of Bulk Materials Onto Paved Surfaces: The 

owner and/or operator of a non-traditional source of fugitive dust that involves 

erosion-caused deposition of bulk materials onto paved surfaces shall comply 

with the control measures described in Section 302.9(a) of this rule and the 

additional requirements described in Section 302.9(b) of this rule. 

a. Control Measures:

(1) Remove any and all such deposits by utilizing the appropriate control 

measures within 24 hours of the deposits’ identification or prior to the 

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resumption of traffic on pavement, where the pavement area has been 

closed to traffic; and

(2) Dispose of deposits in such a manner so as not to cause another source 

of fugitive dust. 

b. Additional Requirements:

(1) In the event that erosion-caused deposition of bulk materials or other 

materials occurs on any adjacent paved roadway, paved parking lot, 

curb, gutter, or sidewalk, the owner and/or operator of the property from 

which the deposition eroded shall implement both of the control 

measures described in Section 302.9(a) of this rule. 

(2) Failure to comply with both of the control measures described in Section 

302.9(a) of this rule shall constitute a violation of this rule. 

302.10 Easements, Rights-of-Way, and Access Roads for Utilities (Transmission of 

Electricity, Natural Gas, Oil, Water, and Gas): The owner and/or operator of a 

non-traditional source of fugitive dust that involves easements, rights-of-way, and 

access roads for utilities (transmission of electricity, natural gas, oil, water, and 

gas) that are used by 150 vehicle trips or more per day in the PM10 nonattainment 

area shall be subject to the requirements described in Section 302.10(a) of this 

rule and unless otherwise specified and/or required, comply with one of the 

control measures described in Section 302.10(b) of this rule and the additional 

requirements described in Section 302.10(c) of this rule. 

a. Visible Emissions Requirements and Stabilization Requirements: The 

owner and/or operator of a non-traditional source of fugitive dust that involves 

easements, rights-of-way, and access roads for utilities (transmission of 

electricity, natural gas, oil, water, and gas) shall not cause or allow visible 

fugitive dust emissions to exceed 20% opacity and shall not allow silt loading 

equal to or greater than 0.33 oz/ft2

. However, if silt loading is equal to or 

greater than 0.33 oz/ft2

, then the owner and/or operator shall not allow the silt 

content to exceed 6%.

b. Control Measures:

(1) Pave;

(2) Apply dust suppressants other than water; 

(3) Uniformly apply and maintain surface gravel; or

(4) Install locked gates at each entry point.

Page 268 of 720
c. Additional Requirements:

(1) If an owner and/or operator allows 150 vehicle trips or more per day to 

use an easement, right-of-way, and access road for utilities (transmission 

of electricity, natural gas, oil, water, and gas) in the PM10 nonattainment 

area, then such owner and/or operator shall first implement one of the 

control measures described in Section 302.10(b) of this rule. 

(2) A person, who allows 150 vehicle trips or more per day to use an 

easement, right-of-way, and access road for utilities (transmission of 

electricity, natural gas, oil, water, and gas) in the PM10 nonattainment 

area, shall be responsible for conducting vehicle counts/traffic counts to 

determine if 150 vehicle trips or more per day occur on an easement, 

right-of-way, and access road for utilities (transmission of electricity, 

natural gas, oil, water, and gas). A traffic count shall measure vehicular 

traffic over a 48-hour period, which may consist of two non-consecutive 

24-hour periods. Vehicular traffic shall be measured continuously during 

each 24-hour period. The average vehicle counts/traffic counts on the 

highest trafficked days shall be recorded and provided to the Control 

Officer in writing within 60 days of verbal or written request by the 

Control Officer.

(3) Control measure(s) shall be considered effectively implemented when 

the easement, right-of-way, and access road for utilities (transmission of 

electricity, natural gas, oil, water, and gas) meets the requirements

described in Section 302.10(a) of this rule. 

SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE)

SECTION 500 – MONITORING AND RECORDS

501 COMPLIANCE DETERMINATION: To determine compliance with this rule, the 

following test methods shall be followed: 

501.1 Opacity Observations: 

a. Opacity observations to measure visible emissions shall be conducted in 

accordance with the techniques specified in EPA Reference Method 203B 

(Visual Determination of Opacity of Emissions from Stationary Sources for

Time-Exception Regulations). Emissions shall not exceed the applicable 

opacity standards of this rule for a period aggregating more than three minutes 

in any 60-minute period. 

b. Opacity observations to determine compliance with Sections 302.6, 302.7, 

302.8(a)(1), 302.8(a)(2), and 302.10 of this rule shall be conducted in 

Page 269 of 720
accordance with the techniques specified in Appendix C (Fugitive Dust Test 

Methods) of these rules. 

501.2 Stabilization observations for unpaved parking lots and/or unpaved roadways 

(including alleys) shall be conducted in accordance with Appendix C, Section 2.1 

(Test Methods for Stabilization for Unpaved Roads and Unpaved Parking Lots) of 

these rules.

501.3 Stabilization observations for vehicle use in open areas and vacant lots and/or 

open areas and vacant lots shall be conducted in accordance with the following: 

a. Appendix C, Section 2.3 (Test Methods for Stabilization: Soil Crust 

Determination: The Drop Ball Test) of these rules; or

b. Appendix C, Section 2.4 (Test Methods for Stabilization: Determination of 

Threshold Friction Velocity [TFV]: Sieving Field Procedure) of these rules, 

where the threshold friction velocity (TFV) for disturbed surface areas 

corrected for non-erodible elements is 100 cm/second or higher; or 

c. Appendix C, Section 2.5 (Test Methods for Stabilization: Determination of 

Flat Vegetative Cover) of these rules, where flat vegetation cover (i.e., 

attached [rooted] vegetation or unattached vegetative debris lying on the 

surface with a predominant horizontal orientation that is not subject to 

movement by wind) is equal to at least 50%; or

d. Appendix C, Section 2.6 (Test Methods for Stabilization: Determination of 

Standing Vegetative Cover) of these rules, where standing vegetation cover 

(i.e., vegetation that is attached [rooted] with a predominant vertical 

orientation) is equal to or greater than 30%; or 

e. Appendix C, Section 2.6 (Test Methods for Stabilization: Determination of 

Standing Vegetative Cover) of these rules, where the standing vegetation 

cover (i.e., vegetation that is attached [rooted] with a predominant vertical 

orientation) is equal to or greater than 10% and where the threshold friction 

velocity, corrected for non-erodible elements, is equal to or greater than 43 

cm/second; or 

f. Appendix C, Section 2.7 (Test Methods for Stabilization: Rock Test Method) 

of these rules where a percent cover is equal to or greater than 10% for nonerodible elements.

g. An alternative test method approved in writing by the Control Officer and the 

Administrator. 

502 RECORDKEEPING: Any person subject to the requirements of this rule shall compile 

and retain records that provide evidence of control measure application (i.e., receipts 

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and/or purchase records). Such person shall describe, in the records, the type of treatment 

or control measure, extent of coverage, and date applied. Upon verbal or written request 

by the Control Officer, such person shall provide the records and supporting 

documentation as soon as possible but no later than 48 hours, excluding weekends. If the 

Control Officer is at the site where requested records are kept, such person shall provide 

the records without delay. 

503 RECORDS RETENTION: Copies of the records required by Section 502 

(Recordkeeping) of this rule shall be retained for at least two years.

Page 271 of 720
Page 272 of 720
Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 1 of 42

This package contains information and forms necessary to apply for a Dust Control permit as set forth in Maricopa County Air 

Pollution Control Regulations Rule 310. The Dust Control Permit Application Package is organized into three major parts. 

PART 1. DUST CONTROL PERMIT APPLICATION INSTRUCTIONS 5 

PART 2. DUST CONTROL PERMIT APPLICATION FORM 23

PART 3. DUST CONTROL PERMIT APPLICATION DUST CONTROL PLAN 28

TABLE OF CONTENTS 

Important rule changes effective March 2008 3 

Frequently Asked Questions (FAQs) 4 

PART 1. DUST CONTROL PERMIT APPLICATION INSTRUCTIONS 5 

A. Instructions for completing the Dust Control Permit Application Form 5 

Applicant Information instructions 5 

Project Information instructions 6 

B. Instructions for completing the Dust Control Permit Application Dust Control Plan 8 

Dust Control Plan general information 8 

Dust Control Plan Control Measures instructions 10

C. Appendix: Additional information on Key Topics 14

Glossary of Terms 14

Applicable Maricopa County Air Pollution Control Regulations 14

Project information sign 15

Soil texture and type classification summary 15

Soil texture and type map summary 16

Additional assistance 17

Dust suppressants summary 18

Examples for correctly completing Part 3 – Dust Control Plan 19

PART 2. DUST CONTROL PERMIT APPLICATION FORM 23

Completeness Checklist 23 

Applicant Information 23 

Project Information 25

PART 3. DUST CONTROL PERMIT APPLICATION DUST CONTROL PLAN 28

Categories A – H Control Measures 29

Category I Water, tables 37

Category J Dust suppressants other than water, table 42

In order to be accepted for review the Dust Control Permit Application Package must be complete. This includes 

answering all questions fully and accurately in the Applicant and Project information areas as well as submitting 

a Dust Control Plan. You may fill out Part 3 of the Dust Control Permit Application and submit it as your Dust 

Control Plan or you may write your own Dust Control Plan that conforms to Rule 310, Section 402. 

Once a complete Dust Control Permit Application Package is accepted, allow up to 14 calendar days for permit 

processing plus sufficient time for delivery by U.S. Postal Service First Class mail. 

Keep in mind, the Maricopa County Air Quality Department uses the Instructions portion of the Dust Control Permit Application Package as 

criteria when reviewing, evaluating, and approving the Permit Application. The rules identified in the instructions contain legally binding and 

enforceable requirements. Permits issued by the Maricopa County Air Quality Department under the rules also contain legally binding and 

enforceable conditions and terms. The Dust Control Permit Application Instructions do not supersede or change any existing federal, state, or 

county regulations and laws, including requirements of an approved State Implementation Plan (SIP). 

DUST CONTROL PERMIT APPLICATION PACKAGE

Maricopa County 

Air Quality Department 

Page 273 of 720
Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 2 of 42

BLANK PAGE 

Page 274 of 720
Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 3 of 42

IMPORTANT RULE CHANGES EFFECTIVE MARCH 2008

Maricopa County Air Pollution Control Regulations Rule 310 “Fugitive Dust from Dust-Generating Operations” and Rule 200 

“Permit Requirements” introduced the following requirements in early 2008 that you should be aware of:

1. Dust Control Coordinator

A Dust Control Coordinator is required to be on-site at all times during primary dust-generating operations 

for any site of five or more acres of disturbed surface area that is subject to a Maricopa County dust control 

permit (Rule 310, Section 310). The contact information for the Dust Control Coordinator(s) must be 

provided in Question #5 of Part 2 of the Dust Control Permit Application.

2. Dust Control Training Classes

Comprehensive Dust Control Training:

The Dust Control Coordinator is required to successfully complete a Comprehensive Dust Control 

Training Class at least once every three years.

Basic Dust Control Training:

Site superintendents or other designated on-site representatives of the permit holder, if present at a site 

with more than one acre of disturbed surface area, is required to successfully complete a Basic Dust 

Control Training Class at least once every three years.

All water truck drivers and water pull drivers must successfully complete a Basic Dust Control Training 

Class at least once every three years.

More information on these training classes can be found by calling the Training Line at 602-372-1467 or at: 

www.maricopa.gov/aq/divisions/compliance/dust/dust_control_training on the MCAQD’s Dust Compliance 

Division web site.

3. Visible emissions beyond property line

Rule 310, Section 303.1 requires that the owner and/or operator of a dust generating operation shall not 

cause, suffer, or allow visible emissions of particulate matter, including fugitive dust, beyond the property 

line within which the emissions are generated. Section 303.2 does provide an exception for dust-generating 

operations conducted within 25 feet of the property line.

4. Subcontractor Registration

A requirement of Rule 200 (Permit Requirements) is Subcontractor Registration. Subcontractors do not 

submit the Dust Control Permit Application in the role of “Applicant” but subcontractors engaged in dustgenerating operations at a site that is subject to a Maricopa County dust control permit are required to 

register with the MCAQD (Rule 200, Section 306) and pay an annual fee as specified in Rule 280, Section 

312. The subcontractor shall have its registration number readily accessible on-site while conducting any 

dust-generating operations and the registration number must be visible and readable by the public without 

having to be asked by the public. The registration and $50.00 fee can be submitted by mail or in person at 

the One Stop Shop, 501 N. 44th Street, Suite 200, Phoenix, AZ 85008. Additional information on 

Subcontractor Registration requirements, submittal and current fees can be found at 

http://www.maricopa.gov/aq/divisions/compliance/dust/subcontractorRegistration.aspx

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FREQUENTLY ASKED QUESTIONS (FAQs) 

1. Do I need a Dust Control Permit? 

A. Activity: Whenever a dust-generating activity will disturb 1/10th acre (4,356 square feet) or more you must obtain a dust 

control permit before commencing the activity. This area of disturbance includes all areas under common control such as 

stockpiles, storage and equipment yards as well as the area being disturbed, even if they may be separated by public or 

private roadways (Rule 310, Section 302). No activity may commence before the permit is approved and, along with the 

Dust Control Plan, posted in a conspicuous location at the work site, within on-site equipment, or in an on-site vehicle, or 

otherwise kept available on-site at all times. 

B. Re-application: Dust Control permits are valid for one year from the date of approval. If the project still has a disturbed 

surface area of 0.10 acre (4,356 square feet) or more at the expiration of the one year permit term a new permit will 

need to be obtained by submitting a new Dust Control Application. The re-application process can take up to 14 calendar 

days once a complete application is received (not including time for postal delivery) so the application must be submitted 

at least 14 calendar days before the existing Dust Control permit expires. 

2. How do I apply? What are the steps? 

A. Obtain Dust Control Permit Application Package: You can pick up the application package in person at either the 

Maricopa County Air Quality Department (MCAQD) Dust Compliance Division offices at 1001 North Central Avenue, Suite 

400 in Phoenix, Arizona as well as the One Stop Shop at 501 North 44th Street, Suite 200 in Phoenix or download it from 

http://www.maricopa.gov/aq/divisions/compliance/dust/resources.aspx

B. Review the Instructions: Read the instructions thoroughly before beginning work on the application. The instructions are 

intended to accompany the application. The instructions constitute a body of experience and informed judgment by the 

Maricopa County Air Quality Department and dust control field inspectors to which you may properly resort for guidance, 

including details and explanations of the information required in the application. If you still have questions about the 

application you may find answers on the MCAQD website or by calling the Dust Compliance Division at 602-506-6010.

C. Complete the Permit Application Form: Fully complete both the Applicant and the Project Information portions of the 

application, generally in the sequence it is written, using the instructions and Dust Compliance personnel for assistance. 

D. Complete the Dust Control Plan: A dust control plan is required and the third part of the package is designed to guide 

project personnel in developing a dust control plan that will be posted on-site, and the project will abide by on a day to 

day basis. Every category or sub-category must be completed, including an explanation for those that are designated 

non-applicable. A project may develop its own dust control plan as long as it conforms to Rule 310, Section 402. 

E. Review the Completeness Checklist: (see the first page of the Dust Control Permit Application Form, p. 23) 

F. Submit the completed permit application: When submitting the completed application to the One Stop Shop at 501 North 

44th Street, Suite 200, Phoenix, Arizona 85008, include the appropriate fee for your Dust Control Permit Application (see 

FAQ #3 below). The completed application can be submitted to the One Stop Shop in person or by mail with payment by 

check or money order in either case. In addition, a credit card or cash may be used for payment if the application is 

submitted in person at the One Stop Shop location. 

Make checks payable to “Maricopa County Air Quality Department” or “MCAQD”.

The completed permit will be sent to the Applicant’s address. Allow up to 14 calendar days for permit processing 

plus sufficient time for delivery by U.S. Postal Service First Class mail. 

3. What will it cost? 

Detailed information on current fees can be found in the Maricopa County Air Pollution Control Regulations Rule 280 –

Fees or on the Department’s web site: http://www.maricopa.gov/aq/divisions/permit_engineering/permit_fees.aspx

Basic fees for a Dust Control Permit (permit valid for one year) are calculated according to the following: 

• If total surface area disturbed is 0.1 acre to less than 1 acre, submit $350.00. 

• If total surface area disturbed is 1 acre or more, submit $350.00 plus $77.00 per acre (to a maximum of $15,750). 

• A late fee of $100.00 is required for any application submitted in response to a violation. 

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PART 1. 

DUST CONTROL PERMIT APPLICATION INSTRUCTIONS 

A. INSTRUCTIONS FOR COMPLETING THE DUST CONTROL PERMIT 

APPLICATION FORM 

APPLICANT INFORMATION INSTRUCTIONS 

1. Applicant 

Please note that if you are completing this application and you are the "Applicant", then you are the responsible 

authority for controlling all aspects of all the work accomplished on-site from initial groundbreaking to final 

stabilization. This includes canceling the Dust Control Permit when the project is complete and/or when you no longer 

have control over the day-to-day operations on the site. The Applicant must be the property owner, general/prime 

contractor, developer or lessee; a subcontractor cannot be the Applicant responsible for a dust control permit. 

The Applicant's name will show on the permit and will not change on re-applications or changes to the permit that 

retain the original permit number. The Applicant may or may not also be the party contracting to do the work at the 

site. The address provided will be put on all subsequent permits with the same Applicant name and will serve as the 

mailing address for the permit or other compliance issues. The Applicant will be the responsible party for the 

purposes of this project. 

The Maricopa County Air Quality Department requires the Applicant Information to be fully and accurately completed, 

including full legal names of all entities and individuals (no DBA’s or trade names). For all Applicants, appropriate 

registration in the State of Arizona will be verified with the Arizona Corporation Commission or other applicable 

resources before a permit will be issued. 

2. Parent Company if Applicant is a wholly owned subsidiary 

If the Applicant is a wholly owned subsidiary provide full information for the parent company as well. If the parent 

company has a local or regional presence, use that location and provide contact information for the highest ranking 

official at that location. 

3. Applicant President/Owner 

Provide contact information for the highest ranking, local or regional company official of the Applicant. 

4. Property Owner/Developer, if not Applicant 

Include information regarding the property owner/developer, if different from the Applicant. 

5. Dust Control Coordinator 

Any site with five acres or more of disturbed surface area subject to a permit issued by the Control Officer requiring 

control of PM10 emissions from dust-generating operations requires at least one designated Dust Control Coordinator, 

with a valid dust training certification identification card that is readily accessible, on-site at all times during primary 

dust-generating operations per Rule 310, Section 310. The Dust Control Coordinator is required in Rule 310, Section 

309.2 to complete a Comprehensive Dust Control Training Class at least once every three years, after which a unique 

identification badge will be issued to the coordinator and is to be referenced in Question #5 in the application. If 

there are multiple Dust Control Coordinators, list additional information on a separate sheet of paper and attach 

following the page this question is on. Changes to the Dust Control Coordinator list can be made with the appropriate 

form, such as the Dust Control Plan Change form, which can be found on the MCAQD Dust Control Compliance 

website at http://www.maricopa.gov/aq/divisions/compliance/dust/resources.aspx or with a letter that clearly states 

the changes to be made as well as the permit and dust control plan that will be affected. A form is also available that 

applies to notifying the MCAQD that a site no longer needs a Dust Control Coordinator when the disturbed surface 

area of the site falls below five acres. 

6. Primary Project Contact 

For all projects, provide a Primary Project Contact that may be a Dust Control Coordinator or a different individual all 

together. Provide information in this question regarding the person the MCAQD can contact who is knowledgeable of 

the project site or state if this person is listed as the Dust Control Coordinator in the previous question. The phone 

number(s) provided should be able to reach the contact within four hours. 

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7. Certification by a Responsible Official of the Applicant 

A Responsible Official of the Applicant is the person who will be contacted or named in any enforcement action 

initiated by the Maricopa County Air Quality Department or the Maricopa County Attorney’s Office. Pursuant to Rule 

310, Section 401.3, the signature on the Dust Control permit application shall constitute agreement to accept 

responsibility for meeting the conditions of the Dust Control permit and for ensuring that control measures are 

implemented throughout the project site and during the duration of the project. 

 For a corporation, a corporate officer or any other person who performs similar policy or decision-making 

functions for the corporation, or a duly authorized representative of such person, if the representative is 

responsible for the dust-generating operations in the subject application. Delegation of authority to such 

representative shall be approved in advance by the Maricopa County Air Quality Department, Dust Compliance 

Division. 

 For a partnership or sole proprietorship, a general partner or the proprietor, respectively. 

 For a municipality, state, federal, or other public agency, the principle executive officer or ranking elected 

official of that entity. Delegation of signature authority needs to be submitted in writing to the Maricopa 

County Air Quality Department, Dust Compliance Division. 

8. Application completed by, (if other than Signatory) 

Frequently, this person needs to be contacted to clarify information in the application or if there are questions 

regarding how the Dust Control Plan was filled out. 

PROJECT INFORMATION INSTRUCTIONS 

9. Name of Project 

Name, if any, by which this project will be referred (e.g. Pleasant Hill Acres). 

10. Project Location 

Provide the best available information for the project’s geographic location. If there is an on-site construction office or 

similar physical contact point this should be referenced. If no specific street address is available, provide a block 

number and street name, Maricopa County Assessor’s parcel number, master plan community number, geographic 

coordinates or any other pertinent location information or description. 

11. Project Location by Township (N or S), Range (E or W), Section (1-36) 

The map code or grid location in Township/Range/Section (TRS) format is required and can be obtained from a 

Phoenix Metropolitan map book or from the Maricopa County Assessor’s parcel description.

12. Brief Project Description 

Describe the project that will be taking place on the site (e.g. 3-building commercial complex; custom home; weed 

control; demolition of two buildings; roadway improvement). 

13. Will a basement or underground parking be excavated? 

This information influences the volume of dust generating material that will be disturbed, moved, stored, and removed 

from the project location. 

14. Will building occur on a pre-existing/prepared pad? 

A pre-existing pad/prepared pad is considered to be on a parcel within an existing/prepared subdivision. 

15. Size of Project 

The size of the project is the total area that will be disturbed throughout the duration of the Permit. Include all 

unpaved staging areas, stockpiles, access and haul roads, parking, driveways, as well as storage (stated in acres). Be 

sure to separately notate the specific area of land to be graded if it is different in size than the total area. You will 

also need to indicate the estimated amount of import/export Bulk Material, as defined in Section 203 of Rule 310, 

to/from the project site. The estimated amount of import/export Bulk Material to/from the project site is for hauling 

purposes and may not match the cubic yards to be moved within the boundaries of the project. 

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16. Project Site Drawing 

Maricopa County uses a project site drawing to delineate boundaries between separate projects, so one permit holder 

is not held responsible for another’s work. It is used as a reference, so it does not need to be to scale. It should 

however be as accurate as possible. The drawing should be no larger than 81⁄2” x 11”. The Dust Control Permit 

Application Form contains an example of what this drawing should contain (see page 26), including the following 

minimum elements: 

 Entire project site boundaries 

 Area(s) to be disturbed with linear dimensions, usually in feet (including staging areas, stockpiles, access and haul 

roads, parking, driveways, and storage) 

 Nearest main crossroads 

 North arrow 

 Access Point(s) – Planned exit locations onto paved areas accessible to the public 

17. Is this a Re-application? 

A permit is valid for 1 year after the date of approval. The re-application process may take up to 14 calendar days for 

review and processing (not including time for postal delivery) and must be approved prior to the expiration of the old 

permit. You must re-apply for a permit more than 14 calendar days before the original permit expires. 

18. Estimated Project Start Date 

Before Dust-Generating Operations may occur the permit must be approved, which may take up to 14 calendar days 

for review and processing of the permit application (not including time for postal delivery). 

Project Start Date and Project Completion Date (next question) are used by Maricopa County to schedule inspection 

work load. This information is also used to determine if the same project is on-going or a subsequent dust-generating 

operation is taking place at the project location. If this is a re-application provide the original start date of the project. 

19. Estimated Project Completion Date 

The answer to this question may be a date beyond the last effective date of the permit that is being applied for; it is 

acceptable and encouraged to enter the actual Estimated Project Completion Date, not the end date of the permit 

period or some other modification. See Estimated Project Start Date (previous question) as well. 

20. List of Soil Designations from Appendix F 

 Soil Texture 

Rule 310, Section 402.5 requires a Dust Control Plan for construction projects one acre or larger (except for routine 

maintenance and repair done under a block permit) to include the following information: 

 Soil texture naturally present at the dust-generating operation 

 Soil texture to be imported onto the dust-generating operation 

The information to answer this questions may be obtained from Appendix F of the Maricopa County Air Pollution Control 

Regulations or attach a copy of a geotechnical report if the site has been tested. For more detail on soil textures and types 

see the “Appendix – Additional Information on Key Topics” on page 15. 

21. Asbestos NESHAP Notification requirements 

Any Project that includes demolition or renovation of any existing facilities must address asbestos NESHAP issues that 

pertain to the Project. Question #21, including all of its sub-questions, must be fully completed to demonstrate 

whether or not there are any existing asbestos NESHAP issues and compliance with applicable rules before a Dust 

Control Permit can be issued. A separate notification and fee for demolition and/or renovation activities may be 

required. More information on the NESHAP Notification program and fees can be found at: 

http://www.maricopa.gov/aq/divisions/compliance/air/asbestos_neshap/Default.aspx and 

http://www.maricopa.gov/aq/divisions/permit_engineering/permit_fees.aspx respectively. 

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B. INSTRUCTIONS FOR COMPLETING THE DUST CONTROL PERMIT 

APPLICATION DUST CONTROL PLAN 

Rule 310, Section 402 (Dust Control Plan requirements) requires the submission of a Dust Control Plan with your application. You 

may fill out Part 3 of the Dust Control Permit Application and submit it as your Dust Control Plan or you may write your own Dust 

Control Plan describing all dust control measures to be used during the project and submit it for approval as your Dust Control 

Plan. Once approved the Dust Control Plan, along with the permit, must be posted in a conspicuous location at the work site, 

within on-site equipment, or in an on-site vehicle, or otherwise kept available on-site at all times (Rule 310, Section 409). 

Additionally, according to Rule 310, Section 401.2 complete copies of the approved Dust Control permit, including the Dust 

Control Plan, must be supplied to all project contractors and subcontractors. 

Changes to aspects of the Dust Control Plan may be made after the application is approved by submitting a Permit Plan Change 

Form to the Maricopa County Air Quality Department. See below for more information regarding making changes to an approved 

Dust Control Permit and Dust Control Plan. 

DUST CONTROL PLAN GENERAL INFORMATION 

Unlisted Dust Control Measures 

You may choose to use dust control measures not currently listed in Part 3 of the Dust Control Permit Application. Such unlisted 

dust control measures will be reviewed by the Maricopa County Air Quality Department which may require additional information 

regarding the control measure effectiveness. Any unlisted dust control measure must clearly meet the dust control requirements 

of Rule 310 for any dust-generating operation. 

MCAQD will apply the following minimum criteria when evaluating any unlisted dust control measures: 

 The dust control measure technique is a new or alternative technology that is demonstrated to be equally or 

more effective in meeting the dust control requirements than the existing dust control measures provided in 

the Dust Control Permit Application. 

 Site logistics do not practically allow for implementation of a listed dust control measure as written (e.g., road 

width or pre-existing barriers limit the size or width of a gravel pad). 

 The owner and/or operator demonstrates that a listed dust control measure is technically infeasible due to 

site-specific or material-specific conditions, such that implementation of the dust control measure will not 

provide a benefit in reducing fugitive dust (e.g., pre-soaking screened, washed rock when handling). 

Written explanation and/or documentation may be required when including unlisted dust control measures in a Dust Control 

Permit Application.

Opacity 

Rule 310, Section 303 (Visible emissions requirements for Dust-Generating Operations) requires visible fugitive dust emissions to 

not exceed 20% opacity. As a general rule of thumb, if at any time you can see dust being generated by equipment operations, 

it is already at least 10% opacity. 

Opacity is measured by looking through the dust plume, while the sun is at your back. If more than 20% of the background is 

obscured, then the opacity is greater than 20%. Appendix C – Fugitive Dust Test Methods contains information and other 

sources that more fully describe this concept. (See http://www.maricopa.gov/aq/divisions/planning_analysis/AdoptedRules.aspx

for an online version of Appendix C). 

Making Changes to an Approved Dust Control Permit and Dust Control Plan 

You are allowed to make changes to aspects of your approved Dust Control Permit and Dust Control Plan. Maricopa County has 

permit modification forms available at 1001 N. Central Avenue, 4th floor, or you can download permit modification forms from: 

http://www.maricopa.gov/aq/divisions/compliance/dust/resources.aspx

You might have to change your Dust Control Plan if fugitive dust emissions from your project exceed the standards in Rule 310, 

even though you are following your Dust Control Plan. You might also have to change your Dust Control Plan if the acreage for 

your project changes or if the permit holder changes. 

If you change your Dust Control Plan because you have been notified that fugitive dust emissions from your project exceed the 

standards in Rule 310, even though you are following your Dust Control Plan, then you must submit a revised Dust Control Plan 

to the Control Officer within three working days of being notified that your original Dust Control Plan is not effective. During the 

time that you are preparing revisions to your Dust Control Plan, you must still comply with all of the requirements of Rule 310. 

In order to change your Dust Control Permit and/or Dust Control Plan for any other reason, Maricopa County accepts the 

following permit modification forms: 

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Parcel Sale Notification

Form requires applicant name and address, parcel(s) sold, date sold, and buyer name and address. 

Permit Name Change Request

Form requires existing permit holder name and address, new Applicant name and address, and reason for the 

permit name change. Appropriate registration in the State of Arizona will be verified with the Arizona Corporation 

Commission or other applicable resources as is the case with new applications. The previously approved Dust 

Control Plan can stay in effect or a new Dust Control Plan can be submitted for review and approval. 

Permit Cancellation Request

Form requires permit holder name and address, project location, reason for cancellation, verification that no 

further soil disturbing construction activities will occur, that soils have been permanently stabilized, or that all 

applicable rules have been satisfied. You must cancel your Dust Control Permit when your project is complete or 

when you no longer have control over the day-to-day operations on the site. 

Permit Acreage Increase Request

Form requires permit holder name & address, reason for acreage change, and the new acreage. The original Dust 

Control Permit expiration date will not change, it will remain the same. A new site plan showing the increased site 

area must be submitted as well as the appropriate fee corresponding to the additional acreage amount. 

Sites that increase to 1 acre or more may require modifications to the originally submitted Dust Control 

Plan. 

Sites that increase to five acres or more require a project information sign. (Rule 310, Section 308) 

Permit Plan Change

Form requires permit holder name and address, reason for the change, and areas of the plan to be changed. If 

applicable, a revised Dust Control Plan must be submitted with the form and a new site plan may be required. 

Dust Control Coordinator Change Notification

Form is to be used when a site no longer requires a Dust Control Coordinator but is still active. A site visit will be 

required for verification, a Primary Project Contact must be selected, and a new site plan may be required. 

Control Measures 

Water 

When planning a contingency control method, do not choose water if it is already your primary control method. Maricopa 

County assumes that you will apply enough water to control dust, until it becomes an infeasible option. 

Ceasing operations 

Keep in mind that weather conditions play a big part in dust control and may require that you cease operations. While not 

appropriate in all situations, ceasing operations is an acceptable contingency measure many businesses currently use. Due 

to the common use of this control measure and to clarify when its use is appropriate the cease operations option has been 

included as a contingency option in several places in the Dust Control Plan. At the least it requires you to stop operations, 

evaluate why your primary control measure is not working, and make corrections. Ceasing operations lasts as long as it 

takes to resolve or abate the dust control issue. 

Vehicle speed 

Vehicle speed is not an acceptable dust control measure for all dust-generating operations. Where vehicle speed is an 

option for dust control, you must indicate the maximum number of vehicle trips that will be allowed, how the speed of such 

vehicles will be limited, and what areas or roads the limits will apply to. 

Vegetative ground cover 

If you choose “establish vegetative ground cover” as a control measure, you must comply with at least one of the following 

standards. These standards are also described in Rule 310, Section 304.3 – Stabilization requirements for Dust-Generating 

Operations – Disturbed Surface Area: 

 Maintain a flat vegetative cover (i.e., attached/rooted vegetation or unattached vegetative debris lying 

on the surface with a predominant horizontal orientation that is not subject to movement by wind) that 

is equal to at least 50%; 

 Maintain a standing vegetative cover (i.e., vegetation that is attached/rooted with a predominant vertical 

orientation) that is equal to or greater than 30%; 

 Maintain a standing vegetative cover (i.e., vegetation that is attached/rooted with a predominant vertical 

orientation) that is equal to or greater than 10% and where the threshold friction velocity is equal to or 

greater than 43 cm/second when corrected for non-erodible elements; or 

 Maintain a percent cover that is equal to or greater than 10% for non-erodible elements. 

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Surface gravel, recycled asphalt, or other suitable material 

If you choose “apply and maintain surface gravel, recycled asphalt, or other suitable material” as a control measure for 

unpaved haul roads/access areas, you must comply with the following standard. This standard is also described in Rule 

310, Section 304.2 – Stabilization requirements for Dust-Generating Operations – Unpaved Haul/Access Roads: 

 Do not allow visible dust emissions to exceed 20% opacity and either do not allow silt loading to be 

equal to or greater than 0.33 oz/ft2or do not allow silt content to exceed 6%. 

If you choose to “apply and maintain surface gravel, recycled asphalt, or other suitable material” as a control measure for 

unpaved parking areas, you must comply with the following standard. This standard is also described in Rule 310, Section 

304.1 – Stabilization requirements for Dust-Generating Operations – Unpaved Parking Lot: 

 Do not allow visible fugitive dust emissions to exceed 20% opacity and either do not allow silt loading to 

be equal to or greater than 0.33 oz/ft2 or do not allow silt content to exceed 8%. 

More detail on opacity and silt loading can be found in Appendix C – Fugitive Dust Test Methods at 

http://www.maricopa.gov/aq/divisions/planning_analysis/AdoptedRules.aspx

DUST CONTROL PLAN CONTROL MEASURES INSTRUCTIONS 

What follows is a listing of the ten category headings (A-J) that corresponds to the same category headings (A-J) in Part 3 of the Dust 

Control Permit Application. Under each of the ten category headings (A-J) that follow are questions to ask and concepts to consider 

when designing your Dust Control Plan. You must comply with the work practice standards described in Rule 310 and you must 

implement, as applicable, the dust control measures in Rule 310, Section 305. Section 305 describes primary and contingency dust 

control measures for a variety of dust-generating operations. 

When completing the Dust Control Permit Application, use this listing to select dust control measures for your project. Changes to the 

Dust Control Plan may be made after the application is approved by submitting a Permit Plan Change Form to the Maricopa County Air 

Quality Department. See information provided previously (p. 8) regarding making changes to an approved Dust Control Permit and 

Dust Control Plan. 

EXAMPLES of how to complete Control Measures and Water Tables can be found on pages 19-22. 

A. Vehicles/Motorized Equipment 

A.1 Unpaved Staging Areas, Unpaved Parking Areas, and Unpaved Material Storage Areas 

What areas have you set aside for parking, including areas where your employees and contractors will be parking their 

vehicles? What areas have you set aside for material staging? How will you keep vehicles, including the public, 

employees, subcontractors, utilities, and project inspectors, in areas intended for travel? Paving is acceptable as a primary 

control measure, if paving is done at the beginning of a project. 

A.2 Unpaved Access Areas/Haul Roads 

Will you be operating, hauling, or delivering equipment or materials using unpaved areas? Unpaved haul roads/access 

areas are unpaved roads or designated access areas for vehicles or delivery trucks. On most single residential sites, the 

haul road is typically the future driveway. Paving is acceptable as a primary control measure, if paving is done at the 

beginning of a project. 

B. Disturbed Surface Areas 

B.1 Before Active Operations occur 

Create a plan to minimize dust before you start site work. For example Rule 310, Section 305.11 describes dust control 

measures to implement before site work begins. According to Section 305.11 you must either pre-water the site to depth 

of cuts, allowing time for penetration, or you must phase work to reduce the amount of disturbed surface areas at any 

one time. 

If you choose to pre-water the site, you should pre-water the areas to be disturbed prior to commencing a dustgenerating operation. A rule of thumb is 1 acre-foot of water (325,851 gallons) per acre of land. Pre-watering areas to 

depth of cuts will reduce the amount of water required for dust control. Pre-watering does not mean flooding the area to 

be disturbed, which may make the area unworkable. Nor does it mean allowing the watered area to dry-out before the 

dust-generating operation occurs, since that would prevent adequate dust control. 

If you choose to phase work as a dust control measure to reduce the amount of disturbed surface areas at any one time, 

you must show how you will phase the project to create the least amount of disturbance at any one time. You may use 

the project site drawing to show the various project phases, along with a time line showing relative start and stop times. 

Indicate on the application that you have shown the various project phases on the project site drawing. 

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B.2 During Active Operations 

Water must be applied continuously in front of or in conjunction with a scraper/grader/dozer. Water applied behind 

equipment is usually intended for compaction purposes and not dust control. If a water truck is required to leave the 

project site for refilling, the contingency measure must be implemented, as needed, to comply with Rule 310, Section 303 

– Visible emissions requirements for Dust-Generating Operations. 

If you choose to limit vehicle speed, you must indicate the maximum number of vehicle trips that will be allowed and how 

the speed of such vehicles will be limited.

B.3 Stabilization for any inactive period, of any length, 24 hours per day, seven days per week including 

weekends, after work hours, holidays 

How are you going to stabilize your site during non-work hours including any and all times there are no active operations 

occurring but the site has not been permanently stabilized? How will you control wind generated dust? 

B.4 Permanent Stabilization of Disturbed Surface Areas required within ten days following the completion of 

the Dust-Generating Operation if finished for a period of 30 days or longer 

How will the open areas of the site be permanently stabilized? How will the site be stabilized if construction is halted? 

Open areas and vacant lots need to remain stabilized (i.e., maintain a visible crust, vegetation, or surface gravel) and 

inaccessible to motorized vehicles. When your site is permanently stabilized and your project is complete, you should 

cancel your Dust Control Permit. Maricopa County has permit cancellation request forms available at 1001 N. Central 

Avenue, 4th Floor, or you can download the form from: 

http://www.maricopa.gov/aq/divisions/compliance/dust/resources.aspx

C. Bulk Material Handling 

C.1 Off-Site Hauling onto Paved Areas Accessible to the Public 

Will you be conducting debris clean up or lot clean up? Will you be exporting materials? 

C.2 Hauling/Transporting within the Boundaries of the Work Site but not crossing a Paved Area Accessible to 

the Public 

Will you be moving dirt or rock from one area to another area on your site? 

C.3 Hauling/Transporting within the Boundaries of the Work Site and Crossing and/or accessing a Paved Area 

Accessible to the Public 

Crossing a paved area is when you are traveling perpendicular to the paved area, typically entering and leaving it with the 

primary purpose of arriving at a destination on the other side. If you are not crossing a paved area (not traveling 

perpendicular to a paved area), then you are traveling along the paved area. Traveling along the paved area may take 

you outside the work area, unless such area has been barricaded to public travel. 

C.4 Bulk Material Stacking, Loading, and Unloading Operations 

Will you be trenching, backfilling, and/or importing/exporting Bulk Material? 

Stacking, loading, and unloading operations include any time Bulk Materials are loaded into a truck or when materials are 

put into spoils piles from trenching operations. 

If you choose to use water to control dust for cut and fill activities, a rule of thumb is (1) 10,000 gallon water pull for 

each 7,000 cubic yards of material moved per day. When determining the total amount of water necessary for a project, 

another rule of thumb is that it takes at least 30 gallons of water to control dust from each cubic yard of material to be 

moved. 

C.5 Open Storage Piles 

How will you control dust from storage or spoils piles? Will you have spoils and/or storage piles for any length of time? 

Open storage piles include piles that are on-site for any length of time. If you apply water or dust suppressant(s) to open 

storage piles when not conducting stacking, loading, and unloading operations, make sure that you limit unauthorized 

vehicle access to the area. 

D. Trackout, Carry-out, Spillage, and Erosion 

D.1 Trackout Control Device 

What will you use as a trackout control device if trenching removes an existing gravel pad? What will you use as a control 

device during curb and gutter installation? How will you direct traffic to the designated exit locations and restrict traffic 

from using other exit points? 

Trackout control devices are preventative devices intended to reduce the amount of dirt transferred onto paved areas and 

entrained into the atmosphere. Trackout control devices are required at every exit to a paved area accessible to the 

public (any retail parking lot or public roadway that is open to public travel primarily for purposes unrelated to the dustgenerating operation) for job sites 2 acres or larger or when 100 cubic yards of bulk material are hauled on-site or off-site 

per day. Trackout control devices include, but are not limited to, the following: 

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Gravel Pad

A layer of washed gravel, rock, or crushed rock that is at least one inch or larger in diameter that is 

maintained at the point of intersection of a paved area accessible to the public and a work site entrance to 

dislodge mud, dirt, and/or debris from the tires of motor vehicles and/or haul trucks, prior to leaving the 

work site. 

Grizzly or Rumble Grate

A device (i.e., rails, pipes, or grates) used to dislodge mud, dirt, and/or debris from the tires and 

undercarriage of motor vehicles and/or haul trucks prior to leaving the work site. 

Paving

Application and maintenance of asphalt, concrete, or other similar material to a roadway surface (i.e., 

asphaltic concrete, concrete pavement, chip seal, or rubberized asphalt). 

Wheel Wash System

A system, station, or device either temporary or permanent, that utilizes a bath or spray of water for the 

purpose of cleaning mud, soil, and rock from the tires and undercarriage of vehicles to prevent tracking of 

those materials onto paved surfaces. 

Rule 310, Section 306 addresses dust control measures for trackout control. According to Section 306 you must prevent 

trackout by installing, at all access points to the site, a trackout control device such as a grizzly or rumble grate, a wheel 

wash system, or a gravel pad, defined in Rule 310, Section 217 to be at least 30 feet wide, 50 feet long, and 3 inches 

deep. Or you must pave starting from the point of intersection with a paved area accessible to the public and extending 

for a centerline distance of at least 100 feet and a width of at least 20 feet. 

It is a violation of Rule 310 if your site is required to have a trackout control device and does not, regardless of whether 

trackout is present. 

D.2 Cleaning 

Trackout/carry-out is any and all bulk materials that adhere to and agglomerate on the surfaces of motor vehicles, haul 

trucks, and/or equipment (including tires) and that have fallen or been deposited onto a paved area accessible to the 

public. You are required to immediately clean trackout/carry-out extending 25 feet or more. Trackout/carry-out that is 

less than 25 feet requires cleaning by the end of the work day. During import/export operations and following rain 

events, cleaning may need to be done on a consistent basis to control trackout/carry-out. 

Cleaning trackout/carry-out includes removing any and all bulk material that has been deposited onto public roadways, 

medians, gutters, and sidewalks. Cleaning trackout/carry-out can be accomplished by manually sweeping up the 

deposits, by operating a street sweeper or wet broom, or by power washing. Some street sweepers (e.g., street 

sweepers with steel brushes) are more efficient than others, especially on stubborn trackout/carry-out. 

Be sure to check other applicable regulations. For instance, some work sites are located in areas where the paved areas 

may not be cleaned by power washing with water due to Storm Water Pollution Prevention Plans (SWPP), National 

Pollutant Discharge Elimination Standards (NPDES), or Arizona Pollutant Discharge Elimination System (AZPDES). 

It is a violation of Rule 310 if you have not cleaned trackout/carry-out, regardless of whether a trackout control device is 

present. If a street sweeper has been chosen as the primary control measure and is needed immediately but is not 

available, then you must employ the contingency measure. 

E. Weed Abatement by discing or blading 

If this is a long project, will weed removal or weed control be an issue in the future? Weed abatement for the purpose of this 

question is the removal of a weed and its roots by turning over the soil, usually with a disc or blade implement, thereby disturbing 

the surface area and removing a means of stabilizing the surface area. 

F. Blasting operations 

Will blasting be conducted for removal of structural concrete? Is there an available site for stockpiling material? Will underlying 

material require blasting? 

G. Demolition activities 

If concrete removal quantity is sizable, is there an available dump site? Has dust control for this staging or storage area been 

addressed? 

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H. Wind Event 

A “wind event” is when the 60-minute average wind speed is greater than 25 m.p.h. In category H, some control measures are 

to be used in the "nonattainment area" and some control measures are to be used in the "attainment area". A "nonattainment 

area" is an area designated by the Environmental Protection Agency (EPA) as exceeding national ambient air quality standards 

based upon data collected through air quality monitoring. 

Maricopa County does not meet the national ambient air quality standards for particulate matter (PM10). Consequently, Maricopa 

County is considered a nonattainment area for PM10. The general geographical boundary of Maricopa County's PM10

nonattainment area is as follows: Salt River Mountains on the south, Phoenix Mountains on the northwest, Estrella Mountains on 

the southwest, White Tank Mountains on the west, and Superstition Mountains on the east. Maricopa County's PM10

nonattainment area includes all cities within this geographical boundary. 

What has been done to address a possible wind event when no one is on-site, such as on a weekend or a holiday? 

I. Water 

For categories A-H in Part 3 of the Dust Control Permit Application, for which you choose to "apply water" as a dust control 

measure, you must describe the size and number of pieces of the equipment that you will use to supply the water, and the size 

and number of pieces of equipment that you will use to apply the water. 

Soil Rating. For the purpose of completing the minimum water availability tables, soil types have been simplified 

from the four ratings categories in the Appendix F Soil Map into two rating categories. A Severe rating includes 

clay, silty clay, and sandy clay while the Moderate rating includes all other soil types. (See pages 15-17 for 

additional information to assist in determining soil rating) 

Water supply means how water will be supplied to the site. Equipment options for water supply include, but are 

not limited to, metered hydrant, water tower, and water pond. 

Water application system means how water will be applied to the site. Equipment options for water application 

system include, but are not limited to, hoses, water truck, water pull, and water buffalo. 

Minimum water availability means water supply in conjunction with water application system. 

 A minimum water availability table is included for different construction phases to be used in Part 3 where 

“apply water” is chosen as a dust control measure.

 Each minimum water availability table lists the minimum amount of water that you must have available for 

the duration of the project for dust control and compaction in severe and moderate soil types. 

 Use each minimum water availability table to determine the size and number for the equipment that you 

will use to supply the water and to apply the water. 

Regardless of the minimum amount of water that you have available to your site or on your site and regardless of your water 

supply and water application, in no case shall you exceed 20% opacity. Test methods for opacity can be found in Appendix C of 

the Maricopa County Air Pollution Control Regulation. (See an online version of Appendix C at 

http://www.maricopa.gov/aq/divisions/planning_analysis/AdoptedRules.aspx ) 

J. Dust Suppressants other than water 

Although water is a dust suppressant, the information required by Table J in Part 3 in the Dust Control Permit Application should 

not include information on water supply and water application systems. 

The information required by Table J in Part 3 of the Dust Control Permit Application is for all other dust suppressants that you 

use. Fill out the applicable areas in Table J in Part 3 of the Dust Control Permit Application. Be sure to attach information on 

environmental impacts and approvals or certifications related to appropriate and safe use for ground application. Also, attach 

product specification(s) and application sheet(s) or label instructions. 

Different types of soil require more intensive water use or the use of water in combination with dust suppressants, in order to 

meet the requirements of Rule 310. Brief descriptions of dust suppressants and related information can be found in “Appendix –

Additional Information on Key Topics” in the next segment of these instructions.

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C. APPENDIX – ADDITIONAL INFORMATION ON KEY TOPICS 

GLOSSARY OF TERMS (A more complete list of definitions can be found in Rule 310, Section 200) 

Caliche – Common in, and somewhat unique to, the southwestern United States is a soil component known as caliche. Caliche is 

defined as an amorphous (non-crystalline) mass of calcium carbonate (limestone) mixed with clay. Caliche is a general term for any 

secondary calcium carbonate (CaCO3) that forms in sediments or in voids and crevices within bedrock just below the surface in 

semiarid regions, as a result of soil-forming processes (pedogenic caliche) or ground-water evaporation (ground-water caliche). 

Caliche is material left behind by the evaporation of ground water or soil moisture that is no longer present at that level, although 

ground water may be present at much lower depths beneath the caliche. 

Disturbed Surface Area – A portion of the earth's surface or material placed on the earth’s surface that has been physically moved, 

uncovered, destabilized, or otherwise modified from its undisturbed native condition if the potential for the emission of fugitive dust is 

increased by the movement, destabilization, or modification. For the purpose of Rule 310, an area is considered to be a disturbed surface 

area until the activity that caused the disturbance has been completed and the disturbed surface area has been permanently stabilized. 

Dust-Generating Operation – Any activity capable of generating fugitive dust, including but not limited to, land clearing, 

earthmoving, weed abatement by discing or blading, excavating, construction, demolition, bulk material handling, storage and/or 

transporting operations, vehicle use and movement, the operation of any outdoor equipment, or unpaved parking lots. For the 

purpose of Rule 310, landscape maintenance and playing on or maintaining a field used for non-motorized sports shall not be 

considered a dust-generating operation. However, landscape maintenance shall not include grading, trenching, or any other 

mechanized surface disturbing activities performed to establish initial landscapes or to redesign existing landscapes. 

Fugitive Dust – The particulate matter not collected by a capture system that is entrained in the ambient air and is caused from 

human and/or natural activities, such as, but not limited to, movement of soil, vehicles, equipment, blasting, and wind. For the 

purpose of Rule 310, fugitive dust does not include particulate matter emitted directly from the exhaust of motor vehicles and other 

internal combustion engines, from portable brazing, soldering, or welding equipment, and from pile drivers, and does not include 

emissions from process and combustion sources that are subject to other rules in Regulation III-Control Of Air Contaminants of the 

Maricopa County Air Pollution Control Regulations. 

APPLICABLE MARICOPA COUNTY AIR POLLUTION CONTROL REGULATIONS 

1. Rule 200 (Permit Requirements), Section 305 (Dust Control Permit) 

 Requires any dust-generating operation disturbing 0.10 acres (4,356 sq.ft.) or more to obtain a permit, 

 Applies the provisions of Rule 310 (Fugitive Dust from Dust-Generating Operations) to Dust Control permits. 

2. Rule 200 (Permit Requirements), Section 309 (Standards for Applications) 

 Gives the Control Officer authority to design permit applications that contain all the information necessary to enable 

the Control Officer to make the determination to grant or deny a permit, 

 Such applications can contain terms and conditions as the Control Officer deems necessary to assure a source's 

compliance with the requirements of the Maricopa County Air Pollution Control Regulations. 

3. Rule 310 (Fugitive Dust from Dust-Generating Operations) 

 Requires an owner and/or operator of a dust-generating operation to submit a Dust Control Plan with any Dust 

Control Permit as well as before commencing any routine dust-generating operation at a site that has obtained or 

must obtain a Title V, Non-Title V, or general permit under Maricopa County Air Pollution Control Regulations, 

Regulation II (Permits And Fees), 

 Required from initial ground breaking through final stabilization, 

 Valid for one year from the date of issuance, 

Re-application must be submitted at least 14 calendar days prior to the expiration date of the original permit, if 0.10 

acres (4,356 sq.ft.) or more remain disturbed at the expiration of the original permit, 

 Must describe all control measures to be implemented before, after, and while conducting any dust-generating 

operation, including during weekends, after work hours, and on holidays, 

 Maricopa County approves, disapproves, or conditionally approves a Dust Control Plan, in accordance with the 

criteria used to approve, disapprove, or conditionally approve a permit, 

 Failure to comply with the provisions of the approved Dust Control Plan and/or failure to comply with all other 

requirements of Rule 310 is deemed to be a violation of Rule 310, 

 Once approved by the Control Officer, the Dust Control Permit and Dust Control Plan must be posted on-site. 

 Any person who conducts Dust-Generating operations that require a Dust Control Plan shall keep a written record of 

self-inspection on each day Dust-Generating Operations are conducted. (Also referred to as a “Dust Control Log”)

 Permit holder must cancel the permit when the project is complete or when the permit holder no longer has control 

over the day-to-day operations on the site. (See pages 8-9 of the Instructions) 

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PROJECT INFORMATION SIGN 

For sites that are five acres or larger a project information sign must be posted and maintained at the main entrance to the project 

where members of the public can easily view and read the sign (Rule 310, Section 308). The sign must have a white background with 

black block lettering that is at least four inches high and contain at least the following information: 

 Project name and permittee’s name; 

 Current Dust Control permit number and expiration date; 

 Name and local phone number(s) of person(s) responsible for dust control matters; and 

Text stating: “Dust complaints? Call Maricopa County Air Quality Department – (Insert the accurate Maricopa County 

Air Quality Department complaint line telephone number).”

SOIL TEXTURE AND TYPE CLASSIFICATION SUMMARY 

According to Rule 310, Section 402.5 – Dust Control Plan Requirements for construction projects one acre or larger (except for routine 

maintenance and repair done under a block permit), the soil texture that is naturally present and the texture of any soil that will be 

imported to the site must be designated. (See Question #20) 

Soil texture is the single most important physical property of the soil. Knowing the soil texture alone will provide information about: (1) 

water flow potential, (2) water holding capacity, and (3) suitability for many urban uses. Soils can be divided into three basic 

classifications: sands, silts, and clays. (Caliche, commonly found in the Southwest, is basically a form of clay. See Glossary of Terms, 

p. 14 of the Instructions for more information regarding caliche). 

There is great variation within the three basic classifications: sands, silts, and clays, but these classifications will suffice for the purpose 

of choosing appropriate dust control measures for a work site. 

Soils are visually classified by the Unified Soil Classification System on boring logs. Grain-size analysis and Atterberg Limits Tests are 

often performed on selected samples, and the results entered onto a plasticity chart, to aid in classification. The classification system is 

outlined in the chart on page 16 of the Instructions. For a more detailed description of the system, including plasticity and liquid limits, 

see "The Unified Soil Classification System" ASTM Designation D2487 at http://www.astm.org/Standards/D2487.htm

Once the amount of sand, silt, and clay is known, you can give the soil a texture class name. These names change depending on how 

much of each type of particle is in the soil. The textural triangle (shown below) is used to determine the names of the textural classes. 

Different textural classes will require more intensive water use or the use of water in combination with dust suppressants 

(see the tables on pages 16 and 17 of the Instructions), so that visible fugitive dust emissions do not exceed 20% opacity 

in accordance with Rule 310, Section 303 – Visible Emissions requirements for Dust-Generating Operations. Test methods 

for opacity can be found in Appendix C of the Maricopa County Air Pollution Control Regulations (see Appendix C – Fugitive 

Dust Test Methods at http://www.maricopa.gov/aq/divisions/planning_analysis/AdoptedRules.aspx ) 

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Unified Classification System for Soils 

Major Division Group 

Symbol

Typical

Description

CoarseGrained 

Soils

(less than 

50% passes 

No. 200 

sieve)

Gravels

(50% or less of course fraction 

passes No. 4 sieve)

Clean Gravels

(less than 5% passes No. 200 sieve)

GW Well graded gravels, gravel-sand 

mixtures or sand-gravel-cobble mixtures

GP Poorly graded gravels, gravel-sand 

mixtures, or sand-gravel-cobble mixtures

Gravels 

With 

Fines

(more than 

12% passes 

No. 200 

sieve)

Limits plot below "A" 

line & hatched zone 

on plasticity chart

GM Silty gravels, gravel-sand-silt mixtures

Limits plot above "A" 

line & hatched zone 

on plasticity chart

GC Clayey gravels, gravel-sand-clay mixtures

Sands

(more than 50% of course fraction 

passes No. 4 sieve)

Clean Sands

(less than 5% passes No. 200 sieve)

SW Well graded sands, gravelly sands

SP Poorly graded sands, gravelly sands

Sands 

With 

Fines

(more than 

12% passes 

No. 200 

sieve)

Limits plot below "A" 

line & hatched zone 

on plasticity chart

SM Silty sands, sand-silt mixtures

Limits plot above "A" 

line & hatched zone 

on plasticity chart

SC Clayey sands, sand-clay mixtures

FineGrained 

Soils

(50% or 

more passes 

No. 200 

sieve)

Silts

(limits plot below "A" line & 

hatched zone on plasticity chart)

Silts Of Low Plasticity

(liquid limit less than 50) ML Inorganic silts, clayey silts with slight 

plasticity

Silts Of High Plasticity

(liquid limit more than 50) MH Inorganic silts of high plasticity, silty 

soils, elastic silts

Clays

(limits plot above "A" line & 

hatched zone on plasticity chart)

Clays Of Low Plasticity

(liquid limit less than 50) CL

Inorganic clays of low to medium 

plasticity, gravelly clays, sandy clays, silty 

clays, lean clays

Clays Of High Plasticity

(liquid limit more than 50) CH

Inorganic clays of high plasticity, fat 

clays, silty and sandy clays of high 

plasticity

Note: Coarse-grained soils with between 5% & 12% passing the No. 200 sieve and fine-grained soils with limits plotting in the hatched zone on the 

plasticity chart to have dual symbol.

SOIL TEXTURE AND TYPE MAP SUMMARY 

The soil map in Appendix F of the Maricopa County Air Pollution Control Regulations (a large printed soil map is available for 

viewing at the One Stop Shop while a smaller, downloadable version can be found at: 

http://www.maricopa.gov/aq/divisions/planning_analysis/rules/docs/AppendixF-0404.pdf ) designates soil texture ratings 

within the PM10 nonattainment area. See page 13 for more information regarding the PM10 nonattainment area in Maricopa 

County. 

Four soil texture ratings in the table below – severe, moderate, slight, and very slight – refer to a soil’s potential to create 

PM10. The table summarizes the soil map in Appendix F and designates control measures that could be used with each soil 

type. Also, the table shows which soil texture rating relates to which group symbol used in the chart of the Unified 

Classification System for Soils previously on this page. 

The soil map in Appendix F is to be used to identify soil types for purposes of completing Question #20 of the Dust Control 

Permit Application, in lieu of submitting actual measured soil types with your Dust Control Plan. However, the actual 

measured soil types take precedence over any mapped soils.

If any requirements stated in the Instructions or in the Dust Control Permit Application contradict recommendations of a site 

geotechnical report, attach a copy of the report to the Dust Control Plan. The report will be incorporated as part of the Dust 

Control Plan. 

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Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 17 of 42

Summary of Soil Map in Appendix F of the 

Maricopa County Air Pollution Control Regulations 

Map Color 

Designations

Soil 

Texture 

Ratings Soil Types

Group 

Symbols Characteristics Of Soil

Control 

Measures

Red Severe

Clay

Silty Clay

Sandy Clay

CL

CH

 Low hydraulic conductivity 

(the rate at which water can 

flow through the soil)

 Retains water

 Hardens in heat of summer

 Warms-up slower in spring

Apply water

Or

Apply water 

and a dust 

suppressant

Orange Moderate

Loam

Silty Loam

Clay Loam

Sandy Clay

ML

MH

 Retains more water than 

sandy soil

 Drains well

 Easier to work than clay

Apply water

Or

Apply water 

and a dust 

suppressant

Green Slight Very Fine 

Sandy Loam

SW

SP

SM

SC

 Retains more water than 

sandy soil

 Drains well

 Easier to work than clay

Apply water

Light Yellow Very 

Slight

Fine Sand

Coarse Sand

GW

GP

GM

GC

 High hydraulic conductivity 

(the rate at which water can 

flow through the soil)

 Tends not to compact

Apply water

ADDITIONAL ASSISTANCE 

You can reach the MCAQD Dust Compliance Division offices at 1001 North Central Avenue, Suite 400 in Phoenix, Arizona, by 

calling 602-506-6010, or on their website at www.maricopa.gov/aq/divisions/compliance/dust 

Additional useful information and websites are listed below: 

 Dust Compliance main webpage: www.maricopa.gov/aq/divisions/compliance/dust/Default.aspx

 MCAQD Complaint Line for all complaints including dust related items: 602-506-6010

 Dust Compliance resources including: 

o Sample Dust Control Logs 

o Applications 

o Other Forms 

o Informational brochure 

can be found at www.maricopa.gov/aq/divisions/compliance/dust/resources.aspx

 Information on current fees can be found on the MCAQD’s web site: 

www.maricopa.gov/aq/divisions/permit_engineering/permit_fees.aspx

Questions concerning Asbestos NESHAP regulations should be referred to the Maricopa County’s Asbestos 

NESHAP Coordinator at 602-506-6708 or 602-506-0421. Forms, contacts, regulations and additional information 

not covered in the application package may be obtained on the MCAQD website at 

http://www.maricopa.gov/aq/divisions/compliance/air/asbestos_neshap/Default.aspx

 Maricopa County Air Pollution Control Regulations Rule 200 (Permit Requirements) and Rule 310 (Fugitive Dust 

from Dust-Generating Operations) which contain information regarding the requirements and work practices 

associated with this application can be found at: 

www.maricopa.gov/aq/divisions/planning_analysis/AdoptedRules.aspx

 Document Request Forms, in the event the permit and application are not received after the processing and mail 

period have passed: www.maricopa.gov/materials/Document_Request/public_record_request.asp

 Assistance in completing the application may be available by calling the Training Line at 602-372-1467 or online 

at: http://www.maricopa.gov/aq/divisions/compliance/dust/Default.aspx

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DUST SUPPRESSANTS SUMMARY 

Dust suppressants are defined in Rule 310 as: water, hygroscopic material, solution of water and chemical surfactant, foam, non-toxic 

chemical stabilizer or any other dust palliative, which is not prohibited for ground surface application by the Environmental Protection 

Agency (EPA) or the Arizona Department Of Environmental Quality (ADEQ) or any applicable law, rule, or regulation, as a treatment 

material for reducing fugitive dust emissions. 

Dust suppressants work by either agglomerating the fine particles, adhering/binding the surface particles together, or increasing the 

density of the road surface material. They reduce the ability of the surface particles to be lifted and suspended by either vehicle tires 

or wind and non-water suppressants do so with a minimum amount of added water and usually a longer useful life than water alone. 

One important factor in evaluating dust suppressants is the long-term monetary cost versus that of water alone. Environmental 

impacts of both methods on water quality and plant life must also be considered. 

More detail can be found on the MCAQD Dust Compliance website at: www.maricopa.gov/aq/divisions/compliance/dust/resources.aspx

DUST SUPPRESSANT CATEGORIES: 

1. Water-Attracting Chemicals: Chlorides, Salts, Brine Solutions. 

2. Organic, Non-Bituminous Chemicals: Lignosulfonates, Sulphite, Liquors, Tall Oil Pitch, Pine Tar, 

Vegetable Oils, Molasses. 

3. Electro-Chemical Stabilizers: Sulphonated Petroleum, Ionic Stabilizers, Bentonite. 

4. Polymers: Polyvinyl Acrylics, Acetates. 

5. Microbiological Binders: Cryptogams, Blue-Green Algae Inoculants, Enzyme Slurries. 

DUST SUPPRESSION TECHNOLOGIES: 

In addition to categories of dust suppressants, the subject can also be divided by dust suppression technologies including the 

following: 

1. Wetting Agents: Surfactant (see below) formulations that improve the ability of water to wet and 

agglomerate fine particles. 

2. Foaming Agents: Surfactant formulations used to convert water and air into a dry, stable, small-bubbled foam 

with a consistency similar to shaving cream. 

3. Binding/Agglomerating Agents: Performs similar functions as wetting and foaming agents but 

provides a longer residual effect than water alone and thus is used when it is either impractical or uneconomical to 

control dust using just water technologies. 

4. Crusting Agents: Binding agents that are chemically similar to latex paint in that their primary active 

components are water-based latex polymers that cure to form a mechanically stable water-insoluble film. 

DUST SUPPRESSION MATERIALS: 

1. Surfactants: Surface-active agents, make water more efficient by making water “wetter”, lowering its surface 

tension allowing drops of water to spread out and contact surfaces more effectively 

2. Tackifiers: Substances used with water to hold together mulches and other dust suppressants, binding small 

particles together without forming a hard crust 

3. Flocculants: Chemicals that cause a dispersed colloidal system (such as clay) to coagulate and form flocs. 

Most flocculants are either multivalent cations such as calcium, magnesium, aluminum, or ion polymers. High pH, 

high salinity, and high temperature can also cause clay flocculation. 

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Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 19 of 42

EXAMPLES FOR CORRECTLY COMPLETING PART 3 – DUST CONTROL PLAN 

 Z.1 Operations

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Pave (Choose one of the following): Beginning of Project* During Project* End of Project*

 *Must specify additional primary control measure(s) that will be in place prior to paving 

P C Limit vehicle trips to no more than 20 per day per road AND limit vehicle speeds to no more than 15 m.p.h. In the 

space provided, list the maximum number of vehicle trips on the unpaved access areas/haul roads each day (including 

number of employee vehicles, earthmoving equipment, haul trucks and water trucks) and a description of how vehicle 

speeds will be restricted to no more than 15 m.p.h.:

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable N/A

 

 Z.1 Operations

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Pave (Choose one of the following): Beginning of Project* During Project* End of Project*

 *Must specify additional primary control measure(s) that will be in place prior to paving 

P C Limit vehicle trips to no more than 20 per day per road AND limit vehicle speeds to no more than 15 m.p.h. In the 

space provided, list the maximum number of vehicle trips on the unpaved access areas/haul roads each day (including 

number of employee vehicles, earthmoving equipment, haul trucks and water trucks) and a description of how vehicle 

speeds will be restricted to no more than 15 m.p.h.:

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable N/A because there will not be any 

operations of this type being performed as part of this project

This is an INCORRECT EXAMPLE. 

WHY? If a Control Measure is “not applicable” 

you must provide an explanation for why.

This is a CORRECT EXAMPLE of a 

completed “not applicable” statement 

with a full explanation.

EXAMPLE FOR USE OF THE “NOT APPLICABLE” OPTION

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Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 20 of 42

EXAMPLES FOR CORRECTLY COMPLETING PART 3 – DUST CONTROL PLAN (continued)

 Z.1 Operations

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Pave (Choose one of the following): Beginning of Project* During Project* End of Project*

 *Must specify additional primary control measure(s) that will be in place prior to paving 

P C Limit vehicle trips to no more than 20 per day per road AND limit vehicle speeds to no more than 15 m.p.h. In the 

space provided, list the maximum number of vehicle trips on the unpaved access areas/haul roads each day (including 

number of employee vehicles, earthmoving equipment, haul trucks and water trucks) and a description of how vehicle 

speeds will be restricted to no more than 15 m.p.h.:

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 Z.1 Operations

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Pave (Choose one of the following): Beginning of Project* During Project* End of Project*

 *Must specify additional primary control measure(s) that will be in place prior to paving 

P C Limit vehicle trips to no more than 20 per day per road AND limit vehicle speeds to no more than 15 m.p.h. In the 

space provided, list the maximum number of vehicle trips on the unpaved access areas/haul roads each day (including 

number of employee vehicles, earthmoving equipment, haul trucks and water trucks) and a description of how vehicle 

speeds will be restricted to no more than 15 m.p.h.:

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

This is an INCORRECT EXAMPLE. 

WHY? If a Control Measure checkbox is 

blacked out it CANNOT be used.

This is a CORRECT EXAMPLE of how to use available 

Control Measure checkboxes and avoid using nonavailable Control Measure checkboxes.

EXAMPLE FOR USE OF CHECKBOXES

Page 292 of 720
Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 21 of 42

EXAMPLES FOR CORRECTLY COMPLETING PART 3 – DUST CONTROL PLAN (continued) 

There are two main types of tables (with multiple variations) used in the “Category I. Water” portion of Part 3 of the Application. 

Following is an example of each of the main two table types and how to use each: 

CATEGORY I. WATER, EXAMPLE 1:

Soil 

Texture 

Rating

Project Phase - Staging/Parking Areas/Storage Areas

Including Landscaping Installation

Total Acres Disturbed Minimum Water Available

Severe

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 375 - 750 gallons per day

2 - 10 acres 750 - 3,500 gallons per day

10 - 100 acres 3,500 - 35,000 gallons per day

> 100 acres > 35,000 gallons per day

Moderate

(all other 

classifications)

0 - 2 acres 225 - 400 gallons per day

2 - 10 acres 400 - 2,250 gallons per day

10 - 100 acres 2,250 - 22,500 gallons per day

> 100 acres > 22,500 gallons per day

Average Daily Disturbance in Acres 8 acres Number of Gallons per day 750 – 3,500 gal/day

Supply Quantity and Size Application Quantity and Size

Metered Hydrant (1) 2” Hose

Water Tower Water Truck (1) 2,000 gal

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Example 1, Illustration: 

1. Assume the project has a disturbed area of 8 acres for staging, storage and some parking with a severe soil rating. 

2. Begin with the second line under the headings in the table above. This selection shows a range of 2 – 10 acres of Total 

Acres Disturbed in the Severe, Soil Texture Rating field. 

3. Following this to the Minimum Water Available column on the right gives a range of 750 – 3,500 gallons per day. This 

means that even if an amount of water toward the lower end of the range is being used (750 gallons per day) the 

project must have the availability of water, along with the equipment to apply it, up to the highest end of the range 

(3,500 gallons per day), should conditions demand the higher application. 

4. The total water needed and its distribution must now be reflected in the quantity and size of the water supply methods 

as well as the quantity and size of the water application methods that you enter in their respective columns. 

Page 293 of 720
Maricopa County Dust Control Permit Application Package – INSTRUCTIONS Page 22 of 42

EXAMPLES FOR CORRECTLY COMPLETING PART 3 – DUST CONTROL PLAN (continued) 

CATEGORY I. WATER, EXAMPLE 2: 

Soil 

Texture 

Rating

Project Phase - Mass Grading

(Includes basements)

Minimum Water Available

(November – February)

Minimum Water Available

(March – October)

Severe (clay, 

silty clay, 

sandy clay)

5,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

10,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

Moderate 

(all other 

classifications)

5,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

10,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

Average Daily Disturbance in Acres 10 acres Number of Gallons per acre per day 10,000 gal/acre/day

Daily Minimum Water Availability 100,000 gallons per day AND 90,000 gallons for material moved

(Number of Acres Disturbed) × (Number of Gallons per acre per day)

Supply Quantity and Size Application Quantity and Size

Metered Hydrant (1) 2” Hose

Water Tower Water Truck (2) 5,000 gal 

Water Pond (1) 700,000 gal Water Pull (3) 10,000 gal

Off-Site Water Buffalo

Other Other 

Example 2, Illustration: 

1. Assume the project entails grading 10 acres and all 10 acres are to be graded each day for five days during the March 

thru October time period. Additionally, 3,000 cubic yards of material are to be removed over the five days. 

2. 10 acres x 10,000 gallons per acre per day = 100,000 gallons per day for all 10 acres, AND 

3,000 cubic yards x 30 gallons per cubic yard = 90,000 gallons for the five day period 

3. Total water need for all five days = 590,000 gallons 

4. The total water needed and its distribution must now be reflected in the quantity and size of the water supply methods 

as well as the quantity and size of the water application methods that you enter in their respective columns. 

Page 294 of 720
Maricopa County Dust Control Permit Application Package – APPLICATION FORM Page 23 of 42

For Office Use Only

District # Date Issued

Permit # Approved By

Fee Paid/Acreage Cross Streets

IS MY APPLICATION COMPLETE? 

1. Dust Control Permit Application Form: Completely answer all questions; fill in all blanks and check boxes as 

appropriate, in both the Applicant and Project Information areas of the Form. Attach a copy of the Project Site Drawing.

2. Dust Control Plan: Rule 310, Section 402 (Dust Control Plan requirements) requires the submission of a Dust Control 

Plan with your application. You may submit Part 3 of this application after completely filling in every category or subcategory; a primary and contingency control measure must be chosen for each or an explanation of why the category or 

sub-category is not applicable must be provided. Alternately, you may submit your own Dust Control Plan that conforms 

to Rule 310, Section 402 describing all dust control measures to be used during the project.

3. Fee Payment: Have the appropriate fee ready when submitting the completed permit application to the One Stop Shop 

referenced above, see the MCAQD website: www.maricopa.gov/aq/divisions/permit_engineering/permit_fees.aspx or 

FAQ #3 in the instructions. Fees can be paid with a check or money order when submitting the application in person or 

by mail. When submitting the application in person the fees may also be paid with a credit card or cash.

Applicant Information (See Instructions page 5) 

Applicant Information must be fully and accurately completed, including full legal names of entities 

and individuals (no DBA’s or trade names). For all Applicants, appropriate registration in the State of 

Arizona will be verified with the Arizona Corporation Commission or other applicable resources 

before a permit will be issued.

1. Applicant:

Relationship to property (Check all that apply):

Property Owner General/Prime Contractor Developer Lessee 

Type of Entity:

Corporation Limited Liability Company or Partnership Sole Proprietor Individual Government

Name:

Address:

City: State: Zip:

Phone: Fax:

E-Mail Address:

Local Mailing Address (if not the same as above):

Contractor License Number:

Return all applications to: One Stop Shop

501 N. 44th Street, Suite 200

Phoenix, Arizona 85008

Phone (602) 372-1071 Fax (602) 372-1078

PART 2 

DUST CONTROL PERMIT APPLICATION FORM

Maricopa County 

Air Quality Department 

Page 295 of 720
Maricopa County Dust Control Permit Application Package – APPLICATION FORM Page 24 of 42

2. Is Applicant a wholly owned subsidiary of another Company? Yes No

If "Yes", please provide all requested information below. If “No”, please proceed to Question 3:

Parent Company (if Applicant is a wholly owned subsidiary):

Type of Entity:

Corporation Limited Liability Company or Partnership Sole Proprietor Individual Government

Name:

Address:

City: State: Zip:

Phone: Fax:

State of Incorporation or Registration:

3. Applicant President/Owner:

Name:

Address:

City: State: Zip:

Phone: Fax:

4. Property Owner/Developer, if not Applicant:

Type of Entity:

Corporation Limited Liability Company or Partnership Sole Proprietor Individual Government

Name:

Address:

City: State: Zip:

Phone: Fax:

Contact Person:

5. Dust Control Coordinator: 

At least one Dust Control Coordinator is required to be on-site at all times during primary dust-generating operations 

for any site with five acres or more of disturbed surface area subject to a permit issued by the Control Officer requiring 

control of PM10 emissions from dust-generating operations

List additional Dust Control Coordinators on a separate sheet of paper and include following this sheet

Name:

Title: Company Name:

On-Site Phone: Mobile: Fax:

E-mail Address:

Dust Control Badge ID Number: Expiration Date:

6. Primary Project Contact: 

Provide a Primary Project Contact for all sites with a disturbed surface area subject to a permit issued by the Control 

Officer requiring control of PM10 emissions from dust-generating operations

State if the Primary Project Contact is already referenced in Question #5 above or provide all of the following:

Name:

Title: Company Name:

On-Site Phone: Mobile: Fax:

E-mail Address:

Page 296 of 720
Maricopa County Dust Control Permit Application Package – APPLICATION FORM Page 25 of 42

7. Certification by a Responsible Official of the Applicant:

A Responsible Official of the Applicant is the person who will be contacted or named in any enforcement 

action initiated by the Maricopa County Air Quality Department or the Maricopa County Attorney’s Office. 

Pursuant to Rule 310, Section 401.3, the signature on the Dust Control Permit Application shall constitute 

agreement to accept responsibility for meeting the conditions of the Dust Control Permit and for ensuring 

that control measures are implemented throughout the project site and during the duration of the project.

Arizona Revised Statute § 13-2704 makes it a criminal offense to knowingly make a false material statement 

to a public servant in connection with an application for any benefit, privilege, or license.

I hereby certify that, based on information and belief formed after reasonable inquiry, the statements and information in 

the Dust Control Permit Application, including Applicant Information, Project Information, and the Dust Control Plan, are 

true, accurate, and complete.

Signature:

Printed Name: Title:

8. Application completed by (if other than Signatory):

Signature:

Printed Name: Title

Phone: Fax:

E-mail Address:

Project Information (See Instructions page 6) 

9. Name of Project:

10. Project Location: (If address is not available, complete Other Location information as fully as possible)

Address:

City: State: AZ Zip:

Nearest Major Cross Street North/South:

Nearest Major Cross Street East/West:

Is this location: Unincorporated Area (County) Incorporated Area (City)

Other Location information: (If address is not available provide all information possible below)

County Assessor’s Parcel Number(s):

Master Plan Community Number(s):

Geographic Coordinates:

11. Project Location by Township (N or S), Range (E or W), Section (1-36):

Township: Range: Section:

12. Brief Project Description:

13. Will a basement or underground parking be excavated? Yes No

14. Will building occur on a pre-existing pad/prepared pad? Yes No

15. Size of Project:

Estimated acres to be graded:

Estimated cubic yards of Bulk Material to be moved within the boundaries of the project:

Estimated cubic yards of import Bulk Material:

Estimated cubic yards of export Bulk Material:

Total acres that will be disturbed throughout the duration of this Permit, including staging areas, stockpiles, access and haul roads, 

parking, driveways, as well as temporary storage yards:

Page 297 of 720
Maricopa County Dust Control Permit Application Package – APPLICATION FORM Page 26 of 42

16. Project Site Drawing: 

(NOTE: A Dust Control Permit will not be issued unless a drawing is submitted)

Attach a separate page (81⁄2” × 11”) with a drawing showing all of the following elements:

Entire project site boundaries

Area to be disturbed with linear dimensions

(including staging areas, stockpiles, access and haul roads, parking, driveways, and storage)

Nearest main crossroads

North arrow

Access Point(s) – Planned exit locations onto paved areas accessible to the public

Example (simplified, not to scale):

17. Is this a Re-application? Yes Previous Permit #

No

A permit is valid for 1 year after the date of approval. The re-application process may take up to 14 calendar days for 

review and processing (not including time for postal delivery) and must be approved prior to the expiration of the 

old permit. You must re-apply for a permit more than 14 calendar days before the original permit expires.

18. Estimated Project Start Date (month/day/year). If this is a re-application, list the original project start date:

19. Estimated Project Completion Date (month/day/year), the date may be beyond the one year duration of the 

permit: 

20. List Soil Designations from Appendix F in Maricopa County Air Pollution Control 

Regulations or, if attaching a copy of the site geotechnical report, check here 

For construction projects one acre or larger, except for routine maintenance and repair done under a block permit, designate 

in the table below which soil texture is naturally present on the work site and which soil texture will be imported onto the 

work site (if applicable). If the soil on the work site has been tested, then you should rely on the test results to complete the 

table and you should attach a copy of the site soil report (boring logs) to this application. If the soil on the work site has not 

been tested, then use Appendix F in the Maricopa County Air Pollution Control Regulations to complete the table below.

Texture of soil naturally present on work site Texture of soil to be imported onto work site

North

Access Point(s)

Nearest Main 

100’

Crossroads

150’

Project

Boundary

Page 298 of 720
Maricopa County Dust Control Permit Application Package – APPLICATION FORM Page 27 of 42

21. Asbestos NESHAP Notification requirements: (answer all subparts of Question 21 below)

SEPARATE notification and fee for demolition/renovation 

activities may be required.

Questions concerning the Asbestos NESHAP regulation should be referred to the Maricopa County’s Asbestos NESHAP 

Coordinator at 602-506-6708 or 602-506-0421. Forms, contacts, regulations and additional information not covered below 

may be obtained at: http://www.maricopa.gov/aq/divisions/compliance/air/asbestos_neshap/Default.aspx

Be advised that Maricopa County has been delegated regulatory jurisdiction for all regulated facilities within the boundaries

of Maricopa County, including within all city boundaries contained in the county. All regulated facilities scheduled for 

demolition or renovation (defined below) must be inspected by a currently certified Asbestos Hazard Emergency Response 

Act (AHERA) Building Inspector. There is no waiver of this requirement based on the age of the facility. The inspection 

must be performed within the 12 months preceding commencement of demolition or renovation activity. 

Demolition: The wrecking or taking out of any load-supporting structural member of a facility together with any related 

handling operations or the intentional burning of a facility.

Renovation: Altering a facility or one or more facility components in any way, including the stripping or removal of Regulated 

Asbestos Containing Material (RACM) from a facility component.

21a. Does the Project include demolition or renovation? Yes No

If "Yes", provide all requested information for Questions 21b to 21d. If “No”, proceed to Part 3:

21b. Description of demolition/renovation activities:

21c. Has the property ever been used as a ranch, farm, business or any other commercial or 

industrial purpose? Yes No

21d. Is there a guesthouse, more than one livable structure on the property, or is work being 

done in conjunction with another property in the area? Yes No

If "Yes" to either Question 21c or 21d then skip Question 21e and provide all requested information for Questions 21f to 

21l as the residential property exemption does not apply,

If “No” to both Question 21c and 21d, continue and answer Question 21e:

21e. Is this a residential property? Yes No

If "Yes", proceed to Part 3. If “No”, provide all requested information for Questions 21f to 21l:

21f. Description of each structure:

21g. Has an asbestos inspection been conducted by an AHERA Certified Building Inspector 

within the last 12 months before the time of scheduled activities? Yes No

If "Yes", provide requested information for Question 21h. If “No”, proceed to Question 21i:

21h. Date of AHERA inspection:

21i. Has a 10-Day NESHAP Notification been submitted? Yes No

If "Yes", provide all requested information for Questions 21j to 21l. 

If “No”, you need to file the appropriate form(s), therefore, check online or call the Coordinator as 

referenced above.

21j. 10-Day NESHAP Notification submittal date (Attach a copy):

21k. 10-Day NESHAP Notification number: ASB0

21l. 10-Day NESHAP Notification submitted by: (provide name of the contractor, individual, etc.)

For Central Office Use Only

Demolition Notification number on file: Approved by:

Renovation Notification number on file: Date approved:

Scheduled days of operation: Date contacted:

Follow up: Phone approval:

Date contacted:

Page 299 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 28 of 42

DUST CONTROL PLAN 

(See Instructions pages 8-13, 19-22)

The following 13 pages will become the dust control plan that will be followed for the 

project named in this permit. Once fully completed and approved this Dust Control Plan 

must be posted on-site with the Dust Control Permit and supplied to all contractors and 

subcontractors. 

Primary (“P”) and Contingency (“C”) Control Measures: 

Every category and/or sub-category requires at least one Primary control measure (“P”) and 

at least one Contingency control measure (“C”). A contingency control measure is the backup or secondary action(s) that needs to immediately be implemented when the primary 

control measure(s) fails to adequately control dust emissions at the named project. 

To indicate your choice, mark the box next to the appropriate letter (“P” or “C”) in front of 

each control measure(s) that you have chosen. Do this for both primary and contingency 

control measures in every category and/or sub-category. 

Categories and/or sub-categories that are not applicable: 

When a category and/or sub-category does not apply to the named project this must be 

acknowledged by completely filling out the final entry in the category and/or sub-category. 

An explanation must be supplied for WHY the category and/or sub-category is not 

applicable. This is in addition to simply writing “NA” or “not applicable”.

When completing the following Dust Control Plan, use the Instructions on pages 8-13 and 19-22 to help you select dust control 

measures and keep in mind the following: 

Every category and/or sub-category requires at least one “P” (Primary) and at least one “C” (Contingency).

 Categories and/or sub-categories of dust-generating operations C1, C3, D1, E1, F, and G, in the following Dust Control Plan, 

have primary control measures, “P”, required by Rule 310. You will need to choose a contingency measure, “C”, for these 

dust-generating operations if they are applicable to your project. 

 Where has replaced a "P", the dust control measure CANNOT be used as a primary control measure; this measure may 

only be considered a contingency control measure when selected. 

 Where has replaced a "C", the dust control measure CANNOT be used as a contingency control measure and is required 

to be used as a primary control measure whenever that category and/or sub-category applies to a project. 

 Where "Other" is listed without reference to opacity or surface stabilization standard(s) and is selected as a primary control 

measure, then the description must meet the criteria in the instructions on page 8 for “Unlisted Dust Control Measures.”

 If a category and/or sub-category does not apply to the project named in this application the last item in that category 

and/or sub-category must be fully completed. An explanation of why it is not applicable is required. 

After your Dust Control Permit Application has been approved, you must post

your Dust Control Permit along with this Dust Control Plan on-site, as 

required by Rule 310, Section 409.

Return all applications to: One Stop Shop

501 N. 44th Street, Suite 200

Phoenix, Arizona 85008

Phone (602) 372-1071 Fax (602) 372-1078

PART 3

DUST CONTROL PERMIT APPLICATION DUST CONTROL PLAN

Maricopa County 

Air Quality Department 

Page 300 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 29 of 42

Category A. Vehicles/Motorized Equipment

(See Instructions page 10)

 A.1 Unpaved Staging Areas, Unpaved Parking Areas, and Unpaved Material 

Storage Areas

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Pave (Choose one of the following): Beginning of Project* During Project* End of Project*

 *Must specify additional primary control measure(s) that will be in place prior to paving 

P C Apply and maintain gravel, recycled asphalt, or other suitable material

P C Apply and maintain dust suppressant(s), other than water (Fill out Category J, “Dust Suppressants other than 

water” on p. 42)

P C Limit vehicle trips to no more than 20 per day per road AND limit vehicle speeds to no more than 15 m.p.h. In the space 

provided; 1) list the maximum number of vehicle trips on the unpaved parking/staging/material storage areas each day 

(including number of employee vehicles, earthmoving equipment, haul trucks and water trucks), 2) provide a description 

of how vehicle speeds will be restricted to no more than 15 m.p.h., and 3) specify which area(s) this will apply to:

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 A.2 Unpaved Access Areas/Haul Roads

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Pave (Choose one of the following): Beginning of Project* During Project* End of Project*

 *Must specify additional primary control measure(s) that will be in place prior to paving 

P C Apply and maintain surface gravel, recycled asphalt, or other suitable material

P C Apply and maintain dust suppressant(s), other than water (Fill out Category J, “Dust Suppressants other than 

water” on p. 42)

P C Limit vehicle trips to no more than 20 per day per road AND limit vehicle speeds to no more than 15 m.p.h. In the space 

provided; 1) list the maximum number of vehicle trips on the unpaved parking/staging/material storage areas each day 

(including number of employee vehicles, earthmoving equipment, haul trucks and water trucks), 2) provide a description 

of how vehicle speeds will be restricted to no more than 15 m.p.h., and 3) specify which road(s) this will apply to:

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Page 301 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 30 of 42

Category B. Disturbed Surface Areas

(See Instructions page 10)

 B.1 Before Active Operations occur

P C Pre-water site to the depth of cuts (Fill out Category I, “Water” on pp. 37-41)

P C Phase work to reduce the amount of disturbed surface area at any one time. Attach a map delineating the phases and 

their extent

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 B.2 During Active Operations

P C Apply water or other suitable dust suppressant(s) other than water (Fill out Category I, “Water” on pp. 37-41 or 

Category J, “Dust Suppressants other than water” on p. 42)

P C Apply water to maintain a soil moisture content at a minimum of 12% or at least 70% of the optimum soil moisture 

content for areas that have an optimum moisture content for compaction of less than 12% (Fill out Category I, 

“Water” on pp. 37-41)

P C In conjunction with one of the above listed measures construct fences or three-foot to five-foot high wind barriers with 

50% or less porosity adjacent to roadways or urban areas to reduce the amount of windblown material leaving the site

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Page 302 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 31 of 42

 B.3 Stabilization for any inactive period, of any length, 24 hours per day, seven 

days per week including weekends, after work hours, and holidays

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

Disturbed Surface Areas: Three times per day, increased to a minimum of four times per day if there is evidence of 

wind-blown dust 

Open Storage Piles (temporarily disturbed): At least twice per hour in a PM10 nonattainment area, at least once per 

hour in a PM10 attainment area 

P C Apply and maintain surface gravel or dust suppressant(s) other than water (Fill out Category J, “Dust Suppressants 

other than water” on p. 42)

P C Cover open storage piles with tarps, plastic or other materials such that wind will not remove the covering(s)

P C Establish vegetative ground cover (landscaping)

P C Other: 

Or, explain why this sub-category and its control measures are not applicable 

 

 B.4 Permanent Stabilization of Disturbed Surface Areas required within ten days 

following the completion of the Dust-Generating Operation if finished for a 

period of 30 days or longer

P C Pave (Choose one of the following): Beginning of Project* During Project* End of Project*

*Must specify additional primary control measure(s) that will be in place prior to paving

P C Apply and maintain gravel, recycled asphalt, or other suitable material

P C Apply and maintain dust suppressant(s) other than water (Fill out Category J, “Dust Suppressants other than 

water” on p. 42)

P C Establish vegetative ground cover (landscaping)

P C Implement above control measures and restrict vehicle access to the area

P C Apply water (Fill out Category I, “Water” on pp. 37-41) and prevent access/trespass by: 

(Check all of the following that apply)

 ditches fences berms shrubs trees other

P C Restore area such that the vegetative ground cover and soil characteristics are similar to adjacent or nearby undisturbed 

native conditions (desert xeriscaping)

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Page 303 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 32 of 42

Category C. Bulk Material Handling

(See Instructions page 11)

 C.1 Off-Site Hauling onto Paved Areas Accessible to the Public

P Required: Install, maintain, and use a suitable trackout control device that controls and prevents trackout and/or 

removes particulate matter from tires and the exterior surfaces of haul trucks and/or motor vehicles that traverse the site

P Required when a cargo compartment is loaded: cover haul trucks with a tarp or other suitable closure AND load 

all haul trucks such that the freeboard is not less than 3 inches AND load all haul trucks such that at no time shall the 

highest point of the bulk material be higher than the sides, front, and back of the cargo container area AND prevent 

spillage or loss of bulk material from holes or other openings in the cargo compartment 

P Required when a cargo compartment is empty: cover haul trucks with a tarp or other suitable closure OR clean 

the interior of the cargo compartment before leaving the site

NOTE: The following options CANNOT be considered for a primary control measure. 

C Apply water to the top of the load (Fill out Category I, “Water” on pp. 37-41)

C Apply dust suppressant(s) other than water to the top of the load (Fill out Category J, “Dust Suppressants other 

than water” on p. 42)

C Cease operations

C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 C.2 Hauling/Transporting within the Boundaries of the Work Site but not 

crossing a Paved Area Accessible to the Public

P C Limit vehicle speed to 15 m.p.h. or less while traveling on the work site such that visible emissions coming-off the load do 

not exceed 20% opacity

P C Apply water to the top of the load (Fill out Category I, “Water” on pp. 37-41)

P C Apply dust suppressant(s) other than water to the top of the load (Fill out Category J, “Dust Suppressants other 

than water” on p. 42)

P C Cover haul trucks with a tarp or other suitable closure

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Page 304 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 33 of 42

 C.3 Hauling/Transporting within the Boundaries of the Work Site and crossing 

and/or accessing a Paved Area accessible to the Public

P Required: Load all haul trucks such that the freeboard is not less than 3 inches AND load all haul trucks such that at no 

time shall the highest point of the bulk material be higher than the sides, front, and back of the cargo container area 

AND prevent spillage or loss of bulk material from holes or other openings in the cargo compartment AND install 

suitable trackout control device

NOTE: The following options CANNOT be considered for a primary control measure. 

C Cease operations

C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 C.4 Bulk Material Stacking, Loading, and Unloading Operations

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Apply dust suppressant(s) other than water (Fill out Category J, “Dust Suppressants other than water” on p. 42)

NOTE: These following options CANNOT be considered for a primary control measure. 

C Cease operations

C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 C.5 Open Storage Piles

P C Prior to and/or while conducting stacking, loading, and unloading operations spray material with water or a dust 

suppressant other than water (Fill out Category I, “Water” on pp. 37-41 or Category J, “Dust Suppressants 

other than water” on p. 42)

P C When not conducting stacking, loading, and unloading operations cover open storage piles with tarps, plastic, or other 

material,

OR

Apply water to maintain soil moisture content at a minimum of 12% or maintain at least 70% of the optimum soil 

moisture content, for areas that have an optimum moisture content for compaction of less than 12% (Fill out Category 

I, “Water” on pp. 37-41), 

OR

Maintain a soil crust, 

OR

In conjunction with the two measures above, construct and maintain wind barriers, storage silos, or a three-sided 

enclosure with walls, whose length is no less than equal to the pile length, whose distance from the pile is no more 

than twice the height of the pile, whose height is equal to the pile height, and whose porosity is no more than 50% 

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Page 305 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 34 of 42

Category D. Trackout, Carry-out, Spillage, and Erosion

(See Instructions page 11)

 D.1 Trackout Control Device

A trackout control device must be installed if a work site has 2 acres or 

more of disturbed surface area or if a work site has 100 cubic yards of 

bulk material hauled on-site or off-site per day.

P Required: Install at all exits to a paved area accessible to the public at least one of the following: 

(Choose all that apply) 

gravel pad grizzly or rumble grate wheel wash system paved area 

C Cease operations, NOTE: This option CANNOT be considered a primary control measure.

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 D.2 Cleaning

Trackout/carry-out must be cleaned up immediately if trackout/carry-out 

extends a cumulative distance of 25 linear feet or more along a paved area 

accessible to the public including curbs, gutters, and sidewalks.

All other trackout/carry-out must be cleaned up no later than the end of the 

workday (End of Work Day is the end of a working period that may include 

one or more work shifts. If working 24 hours a day, the end of a working 

period shall be considered no later than 8:00 p.m.).

P C Operate a street sweeper or wet broom with sufficient water and at the manufacturer’s recommended speed (e.g. kick 

broom, steel bristle broom, Teflon broom, vacuum)

P C Manually sweep-up deposits

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Page 306 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 35 of 42

Category E. Weed Abatement by Discing or Blading

(See Instructions page 12)

 E.1 Disturbance Operations

P Required: Pre-water site AND apply water during weed abatement by discing or blading (Fill out Category I, 

“Water” on pp. 37-41)

NOTE: The following options CANNOT be considered for a primary control measure. 

C Cease operations

C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

 E.2 Stabilization

P C Pave immediately following weed abatement

P C Apply gravel

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Apply dust suppressant(s) other than water (Fill out Category J, “Dust Suppressants other than water” on p. 42)

P C Establish vegetative ground cover (landscaping)

P C Other: 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Category F. Blasting Operations

(See Instructions page 12)

P Required: Discontinue blasting, if wind gusts above 25 m.p.h.,

 AND

 Required: Pre-water AND maintain surface soils in a stabilized condition where support equipment and vehicles will 

operate (Fill out Category I, “Water” on pp. 37-41)

P C Apply water (Fill out Category I, “Water” on pp. 37-41)

P C Apply and maintain dust suppressant(s) other than water (Fill out Category J, “Dust Suppressants other than 

water” on p. 42)

C Other, NOTE: This option CANNOT be considered a primary control measure. 

 

Or, explain why this category and its control measures are not applicable 

 

Page 307 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 36 of 42

Category G. Demolition Activities

(See Instructions page 12)

P Required: Apply water or water in combination with dust suppressant(s) to demolition debris immediately following 

demolition activity (Fill out Category I, “Water” on pp. 37-41 or Category J, “Dust Suppressants other than 

water” on p. 42),

 AND

 Required: Apply water or water in combination with dust suppressant(s) to all surrounding areas and to all disturbed 

soil surfaces immediately following demolition activity (Fill out Category I, “Water” on pp. 37-41 or Category J, 

“Dust Suppressants other than water” on p. 42)

NOTE: The following options CANNOT be considered for a primary control measure. 

C Thoroughly clean debris from paved and other surfaces following demolition activity

C Other: 

 

Or, explain why this category and its control measures are not applicable 

 

Category H. Wind Event

(See Instructions page 13)

 H.1 During Active Operation

P C Cease dust-generating operation for the duration of the wind event when the 60-minute average wind speed is greater 

than 25 m.p.h. and stabilize work area if dust-generating operation is ceased for the remainder of the work day

P C Apply water or other suitable dust suppressant at least twice per hour (once per hour if outside the nonattainment area) 

(Fill out Category I, “Water” on pp. 37-41 or Category J, “Dust Suppressants other than water” on p. 42)

P C Apply water to maintain soil moisture content at a minimum of 12%, as determined by ASTM Method D2216-05 or other 

equivalent method as approved by the Control Officer and the Administrator of the Environmental Protection Agency (Fill 

out Category I, “Water” on pp. 37-41)

P C Maintain at least 70% of the optimum soil moisture content for areas that have an optimum moisture content for 

compaction of less than 12%, as determined by ASTM Method D1557-02e1, or other equivalent method as approved by 

the Control Officer or the Administrator Of The Environmental Protection Agency (Fill out Category I, “Water” on pp. 

37-41)

P C Apply water or other suitable dust suppressant(s) at least twice (once if outside the nonattainment area) per hour and 

construct fences or three-foot to five-foot high wind barriers with 50% or less porosity adjacent to roadways or urban 

areas to reduce the amount of windblown material leaving the site (Fill out Category I, “Water” on pp. 37-41 or 

Category J, “Dust Suppressants other than water” on p. 42)

C Other, NOTE: This option CANNOT be considered a primary control measure. 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Page 308 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 37 of 42

 H.2 Temporary Disturbed Surface Areas after work hours, weekends, holidays 

and any other inactive periods 24 hours per day, seven days per week

P C Apply and maintain surface gravel or dust suppressant(s) (Fill out Category I, “Water” on pp. 37-41 or Category J, 

“Dust Suppressants other than water” on p. 42)

P C Apply water or water in combination with dust suppressant(s) to all disturbed surface areas three times per day. If there 

is evidence of windblown dust, increase watering frequency to a minimum of four times per day. (Fill out Category I, 

“Water” on pp. 37-41 or Category J, “Dust Suppressants other than water” on p. 42)

P C Apply water or water in combination with dust suppressant(s) on open storage piles at least twice per hour (once per 

hour if outside the nonattainment area) to maintain a visible crust (Fill out Category I, “Water” on pp. 37-41 or 

Category J, “Dust Suppressants other than water” on p. 42)

P C Cover open storage piles with tarps, plastic, or other material such that wind will not remove the coverings

C Other, NOTE: This option CANNOT be considered a primary control measure. 

 

Or, explain why this sub-category and its control measures are not applicable 

 

Category I. Water

(See Instructions page 13)

For each of the different project phases, indicate how the water is to be stored on or supplied to the project site in the “Supply” column,

specifying the quantity and size of the supply method (e.g. (2) 3,000 gallon water towers). Also designate how the water will be applied to 

control dust-generation throughout the project lifetime in the “Application” column, stating the quantity and size of the application method 

(e.g. 1 fire hose, (3) 1,000 gal. water trucks). Minimum water availability means water supply in conjunction with the water application 

system. 

Soil Rating: Severe Moderate

(See Appendix F of the Maricopa County Air Pollution Control Regulations as well as the Instructions, pages 13 and 15-17) 

Soil 

Texture 

Rating

Project Phase - Site Clearing/Removal of 

Vegetation/Debris/Demolition

Total Acres Disturbed Minimum Water Available

Severe

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 500 - 1,000 gallons per day

2 - 10 acres 1,000 - 5,000 gallons per day

10 - 100 acres 5,000 - 50,000 gallons per day

> 100 acres > 50, 000 gallons per day

Moderate

(all other 

classifications)

0 - 2 acres 300 - 600 gallons per day

2 - 10 acres 600 - 3,000 gallons per day

10 - 100 acres 3,000 - 30,000 gallons per day

> 100 acres > 30,000 gallons per day

Average Daily Disturbance in Acres Number of Gallons per day 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Page 309 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 38 of 42

Soil 

Texture 

Rating

Project Phase - Mass Grading

(Includes basements)

Minimum Water Available

(November – February)

Minimum Water Available

(March – October)

Severe

(clay, silty clay, 

sandy clay)

5,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

10,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

Moderate

(all other 

classifications)

5,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

10,000 gallons per acre per day

and

30 gallons per cubic yard of material moved

Average Daily Disturbance in Acres Number of Gallons per acre per day 

Daily Minimum Water Availability 

(Number of Acres Disturbed) × (Number of Gallons per acre per day) 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Soil 

Texture 

Rating

Project Phase - Underground Utilities

Total Acres Disturbed Minimum Water Available

Severe 

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 500 - 1,000 gallons per day

2 - 10 acres 1,000 - 5,000 gallons per day

10 - 100 acres 5,000 - 50,000 gallons per day

> 100 acres > 50, 000 gallons per day

Moderate 

(all other 

classifications)

0 - 2 acres 300 - 600 gallons per day

2 - 10 acres 600 - 3,000 gallons per day

10 - 100 acres 3,000 - 30,000 gallons per day

> 100 acres > 30,000 gallons per day

Average Daily Disturbance in Acres Number of Gallons per day 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Page 310 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 39 of 42

Soil 

Texture 

Rating

Project Phase - Unpaved Access Areas/Haul Roads

Total Acres Disturbed Minimum Water Available

Severe 

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 375 - 750 gallons per day

2 - 10 acres 750 - 3,500 gallons per day

10 - 100 acres 3,500 - 35,000 gallons per day

> 100 acres > 35,000 gallons per day

Moderate 

(all other 

classifications)

0 - 2 acres 225 - 400 gallons per day

2 - 10 acres 400 - 2,250 gallons per day

10 - 100 acres 2,250 - 22,500 gallons per day

> 100 acres > 22,500 gallons per day

Average Daily Disturbance in Acres Number of Gallons per day 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Soil 

Texture 

Rating

Project Phase - Vertical/Paved

(This pertains to Dust Control during the vertical phase of the project)

Total Acres Disturbed Minimum Water Available

Severe 

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 250 - 500 gallons per day

2 - 10 acres 500 - 2,500 gallons per day

10 - 100 acres 2,500 - 25,000 gallons per day

> 100 acres > 25,000 gallons per day

Moderate 

(all other 

classifications)

0 - 2 acres 150 - 300 gallons per day

2 - 10 acres 300 - 1,500 gallons per day

10 - 100 acres 1,500 - 15,000 gallons per day

> 100 acres > 15,000 gallons per day

Average Daily Disturbance in Acres Number of Gallons per day 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Page 311 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 40 of 42

Soil 

Texture 

Rating

Project Phase - Staging/Parking Areas/Storage Areas

Including Landscaping Installation

Total Acres Disturbed Minimum Water Available

Severe 

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 375 - 750 gallons per day

2 - 10 acres 750 - 3,500 gallons per day

10 - 100 acres 3,500 - 35,000 gallons per day

> 100 acres > 35,000 gallons per day

Moderate 

(all other 

classifications)

0 - 2 acres 225 - 400 gallons per day

2 - 10 acres 400 - 2,250 gallons per day

10 - 100 acres 2,250 - 22,500 gallons per day

> 100 acres > 22,500 gallons per day

Average Daily Disturbance in Acres Number of Gallons per day 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Soil 

Texture 

Rating

Project Phase - Structure Excavation

(Includes stem walls, footings, culverts, abutments, caissons)

Total Acres Disturbed Minimum Water Available

Severe 

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 500 - 1,000 gallons per day

2 - 10 acres 1,000 - 5,000 gallons per day

10 - 100 acres 5,000 - 50,000 gallons per day

> 100 acres > 50, 000 gallons per day

Moderate 

(all other 

classifications)

0 - 2 acres 300 - 600 gallons per day

2 - 10 acres 600 - 3,000 gallons per day

10 - 100 acres 3,000 - 30,000 gallons per day

> 100 acres > 30,000 gallons per day

Average Daily Disturbance in Acres Number of Gallons per day 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Page 312 of 720
Maricopa County Dust Control Permit Application Package – DUST CONTROL PLAN Page 41 of 42

Soil 

Texture 

Rating

Project Phase - Fine Grading

Total Acres Disturbed Minimum Water Available

Severe 

(clay, silty 

clay, sandy 

clay)

0 - 2 acres 500 - 1,000 gallons per day

2 - 10 acres 1,000 - 5,000 gallons per day

10 - 100 acres 5,000 - 50,000 gallons per day

> 100 acres > 50, 000 gallons per day

Moderate 

(all other 

classifications)

0 - 2 acres 300 - 600 gallons per day

2 - 10 acres 600 - 3,000 gallons per day

10 - 100 acres 3,000 - 30,000 gallons per day

> 100 acres > 30,000 gallons per day

Average Daily Disturbance in Acres Number of Gallons per day 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Import/Export Operations

Number of Yards Involved in this Phase Number of Days for Operation 

Number of Yards Imported/Exported × 30 gallons of water per yard = (Total Gallons required) 

Total Gallons required divided by number of days = 

Supply Quantity and Size Application Quantity and Size

Metered Hydrant Hose

Water Tower Water Truck

Water Pond Water Pull

Off-Site Water Buffalo

Other Other 

Page 313 of 720
Maricopa County Dust Control Permit Application – DUST CONTROL PLAN Page 42 of 42

Category J. Dust Suppressants other than water

(See Instructions page 13)

Although water is a dust suppressant, the information required by Table J should not include information on water supply and water application. The information required by Table J is 

for all other dust suppressants that you use. Fill out the applicable areas in the table below and attach information on environmental impacts and approvals or certifications related to 

appropriate and safe use for ground application. Also, attach product specification(s) and application sheet(s) or label instructions. 

Application Area Manufacturer Name Product Application Frequency * Intensity**

A

Vehicles/Motorized 

Equipment

B

Disturbed Surface Areas

C

Bulk Material Handling

D

Trackout, Carry-out, 

Spillage, and Erosion

E

Weed Abatement by 

Discing or Blading

F

Blasting Operations

G

Demolition Activities

H

Wind Event

*How often the surface will receive a complete application of dust suppressant (e.g. 3 times a day) 

**The amount used over a period of time (e.g. gallons/minute) 

Page 314 of 720