1-20-10 Pinal PM10 PM2 5 Stakeholder Mtg

8/14/2019 1-20-10 Pinal PM10 PM2 5 Stakeholder Mtg

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Pinal County PM10 andPM2.5 Nonattainment

Area Redesignations

University of ArizonaMaricopa Agriculture Center

January 20, 2010


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Federal Clean Air Act Requirements

National Ambient Air Quality Standards(NAAQS) Protect public health (primary) Protect property (secondary) Monitor ambient air quality Violating standards triggers nonattainment

Governor recommends nonattainmentarea boundaries; EPA establishes later by rule Nonattainment redesignation requires thestate to submit a plan to achieve healthful airquality within 18 months


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Size of PM10 and PM2.5 Particles


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Adverse effects on breathing and respiratory systems,damage to lung tissue, cancer, and premature death

Protection of at-risk populations: children, elderly,people with lung and heart disease, influenza, or

asthma

1 in 13 school-aged children has asthma per EPA Protection of healthy people active outdoors PM10 can also damage buildings, equipment, plants

and animals, and reduce visibility

Health and Welfare Impacts of PM10


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150 micrograms/cubic meter (g/m3) 24-houraverage

No more than 3 exceedances in 3 years Based on most recent 3 years of data:2006-2008 certified monitoring data Dust storm readings dont count if EPA concurswith exceptional and natural events findings Two types of monitors Continuous provides hourly data 24/7 Filter-based monitors usually once every 6th or 3rd

day

1987 24-hour PM10 NAAQS


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History of PM10 ExceedancesSite Name

Maximum 24-hour Averages in g/m3Average Annual

Exceedances2006 2007 2008

Apache Junction Fire Station 73 48 57 0

Casa Grande (Filter) 81 112 74 0

Casa Grande (Continuous, opened 3/07) N/A 983 203 5

Combs School (opened 3/20/07) N/A 970 270 22

Coolidge Maintenance Yard 106 82 55 0

Cowtown (Filter, opened 8/05) 606 759 465 197

Cowtown (Continuous) 1,079 1,014 609 203

Eloy - County Complex 99 136 109 0

Mammoth - County Complex 31 40 35 0

Maricopa - County Complex 429 724 520 15

Pinal Air Park 77 113 53 0

Pinal County Housing Complex (Filter) 153 224 141 2

Pinal County Housing (Continuous) 913 2,253 285 20

Riverside Maintenance Yard 83 65 44 0

Stanfield (Filter) 182 374 201 22

Stanfield (Continuous, opened 2/06) 727a 1,062 375 22


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State/Tribes deadline for recommendations isFebruary 8, 2010 One month extension requested by ADEQ

EPA to notify Governor/Tribes of proposedmodifications to recommended boundary by

April 10, 2010; consultation process

EPA deadline for redesignations of June 10,2010; Federal Register notice later

Clean Air Act Redesignation Process


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Area Designation Recommendations

EPA Guidance requires states to justifynonattainment area boundaries that arebigger or smaller than the whole-countydefault based on nine factors


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Nine Factor Analysis Air quality data Emission sources, locations & contribution Population density & degree of urbanization Traffic & commuting patterns Growth rates & patterns Meteorology (weather and transport) Geography/topography Jurisdictional boundaries Level of control of emission sources


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Anthropogenic VOC Emissions


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Employment Density


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Population Density


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Topography and Meteorology

Broad desert valleys with small mountainranges

Prevailing winds and weather patterns fromthe west Mountains and deserts produce up- anddown-slope winds

Stagnation conditions are common Storms and frontal systems can producestrong winds Exceptional events can be claimed for highwind events, fires, etc.


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Jurisdictional Boundaries

Area of interest is Pinal County No statutory regional planning agency Cities and Towns Indian Nations

Ak Chin Indian Community Gila River Indian Community Tohono Oodham Nation Public and private lands


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Land Ownership in Pinal County


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Existing Controls on Emissions Sources

Pinal permits stationary sources 1 TPY PTE permit threshold covers almost all

ADEQ permits portable sources 15 TPY PM10 PTE permit threshold Pinal requires construction permits 0.1 acre disturbed area threshold

Pinal reasonable precaution rules apply toun-permitted fugitive dust sources

Mobile equipment regulated by ADEQ and/orEPA


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PM2.5 NAAQS

Annual Average Standard 15 g/m3 3-year average of annual mean

concentrations

24-hour Average Standard 35 g/m3 3-year average of 98th percentile values is

less than or equal to 35 g/m3


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History of Annual Average PM2.5 Exceedances

Site Name

Annual Averagesin g/m3

Three-YearAnnual

Average2006 2007 2008

Apache Junction Firehouse 5.3 7.0 7.5 6.6

Casa Grande Downtown 7.6 10.3 10.6 9.5

Cowtown 22.7 22.5 19.6 21.6


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History of 24-hour Average PM2.5 Exceedances

Site Name

98th Percentile Samplesin g/m3

Three-Year

Average2006 2007 2008

Apache Junction Firehouse 9.3 13.0 15.4 12.6

Casa Grande Downtown 15.4 20.0 22.0 19.1

Cowtown 48.9 48.0 40.7 45.9


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Health and Welfare Impacts of PM2.5

Premature death from heart or lung disease Fine particles can aggravate heart and lungdiseases - effects such as cardiovascularsymptoms, cardiac arrhythmias, heartattacks, respiratory symptoms, asthmaattacks, and bronchitisCan result in increased hospital admissions,emergency room visits, absences from schoolor work, and restricted activity days Particularly sensitive: people with heart orlung disease, older adults, and children


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EPA Area of Interest

High potential for long range transport Not necessarily confined to sources inPinal County Potential default nonattainment

boundary identified in 11/13/09 Federal

Register notice includes Cochise, Gila,Graham, La Paz, Maricopa, Pima,

Yavapai and Yuma Counties


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EPA Area of

Interest andState PM2.5

Monitoring

NetworkMonitor Locations

With No exceedances

With Exceedances

With Violations


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Nature of PM2.5 in Pinal County

Cowtown and Nogales are the only violatingmonitors Statewide

PM2.5 is a component of PM10; violations areresult of frequent and very high PM10concentrations 100% of exceedances are also PM10 exceedances

Primary sources are those in close proximityto Cowtown feedlots, other dusts sources,potentially rail traffic and fire Technical support document under develop-ment and should be posted within 2 weeks


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Public ParticipationJanuary 6, 2010 Stakeholder meeting and ADEQ Web site postings

January 12, 2010 First Public Meeting

January 20, 2010 Second Public Meeting in Maricopa, at Maricopa AgriculturalCenter, 37860 West Smith-Enke Road

February 1, 2010 Third Public Meeting in Florence, at the EmergencyOperations Center, Building F, 31 N. Pinal Street

To receive public comments on draft Technical SupportDocument and strawman boundaries for PM10 and PM2.5

nonattainment areasFebruary 5, 2010 Deadline for Public Comment

March 8, 2010 Projected Transmittal of Recommendations to EPA


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Redesignation SIP Timeline

State Implementation Plans dueDecember 2011 (re-designationSIP deadline is 18 months after

effective date of redesignation)


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Additional Information:ADEQ Web site:

www.azdeq.gov/environ/air/plan/pm-

pinal.html

Pinal County AQCD Web site

http://pinalcountyaz.gov/Departments/AirQuality/

Pages/Home.aspx


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Address All Comments To:

James Wagner

Arizona Department of Environmental QualityAir Quality Planning Section

1110 W. Washington Street

Phoenix, AZ 85007

[email protected]

602-771-2388

or 1-800-234-5677 then 771-2388

Documents

1-20-10 Pinal PM10 PM2 5 Stakeholder Mtg