Air Pollutant Watch ListAir Pollutant Watch List(APWL)(APWL)

Darrell D. McCant, B.S.Darrell D. McCant, B.S.Chief Engineer’s Office - Toxicology SectionChief Engineer’s Office - Toxicology SectionTexas Commission on Environmental QualityTexas Commission on Environmental Quality

OutlineOutline

What is the Air Pollutant Watch List (APWL)?What is the Air Pollutant Watch List (APWL)?

What are Areas of Concern?What are Areas of Concern?

What are Pollutants of Interest?What are Pollutants of Interest?

What is the Purpose of the APWL?What is the Purpose of the APWL?

How Additions and Removals are handled? How Additions and Removals are handled?

How We use the APWL?How We use the APWL?

Texas Clean Air ActTexas Clean Air Act

Section 382.002 of the Section 382.002 of the Texas Health and Safety Texas Health and Safety Code empowers the TCEQCode empowers the TCEQ to to regulate ambient regulate ambient air conditions to protect human health, general air conditions to protect human health, general welfare, and physical property from impacts of welfare, and physical property from impacts of air pollution in the ambient air. air pollution in the ambient air.

General welfare is defined as “the esthetic General welfare is defined as “the esthetic enjoyment of property and the surrounding enjoyment of property and the surrounding environment, which includes animals, vegetation environment, which includes animals, vegetation and manmade property.” and manmade property.”

Tools of the TCEQTools of the TCEQ

Sound ScienceSound Science Air Permits / ModelingAir Permits / Modeling Monitoring OperationsMonitoring Operations EnforcementEnforcement Pollution PreventionPollution Prevention Toxicology SectionToxicology Section

Professional JudgmentProfessional Judgment Common Sense ApproachesCommon Sense Approaches

Monitoring Sites Reporting Air Toxics Data to EPAMonitoring Sites Reporting Air Toxics Data to EPA1/1/03 – 9/15/041/1/03 – 9/15/04

Total – 542Total – 542

74

Source: EPA Office of the Inspector General

7

5

MA – 4

CT – 5

RI – 6

NJ – 5

DE – 6

MD – 3

DC – 1

AK – 1

HI – 1

PR – 1

VI – 1

17

35

1 1

1

2

2 22

3

2

8

6

37

0

5

4 3

9

3

24

3

23

6

19

15

10

20

43

10 17

8

28

9

73

29

23

Review Air Monitoring DataReview Air Monitoring DataPM & Metals

VOCs

PAHs

Carbonyls

Acute Health Effects

Chronic Health Effects

Odors

Tools used by ToxicologyTools used by Toxicology

Screening ValuesScreening Values Effects Screening Levels: Effects Screening Levels:

Acute and Chronic Health-Based Acute and Chronic Health-Based Odor- BasedOdor- Based Vegetation-BasedVegetation-Based

TCEQ State Regulatory StandardsTCEQ State Regulatory Standards

Air Pollutant Watch ListAir Pollutant Watch List

What is the APWL?What is the APWL?

Dynamic list of areas and pollutantsDynamic list of areas and pollutants

Internal and External AwarenessInternal and External Awareness

Focus ResourcesFocus Resources Air PermitsAir Permits Mobile MonitoringMobile Monitoring Field Inspections and InvestigationsField Inspections and Investigations Enforcement Enforcement Pollution PreventionPollution Prevention

Reduce EmissionsReduce Emissions

What are Areas of Concern?What are Areas of Concern?

Areas of Concern?

Areas of ConcernAreas of Concern

Monitoring Sites Monitoring Sites FixedFixed MobileMobile

Meteorological DataMeteorological Data Wind and Pollution RosesWind and Pollution Roses Emissions InventoryEmissions Inventory Defined BoundariesDefined Boundaries

Not associated with areas designated Not associated with areas designated “nonattainment”“nonattainment”

- Facility Within APWL- APWL Area of Concern

The Goodyear Tire & Rubber Co.(RN100870898)

Texas Petrochemical LP(RN100219526)

ExxonMobil Corporation(RN102576063)

APWL 1207 (Milby Park) – 1,3-Butadiene

What are Pollutants of Interest?What are Pollutants of Interest?

Pollutants?

Pollutants of InterestPollutants of Interest

Air Toxics Air Toxics VOCs, Carbonyls, Sulfur Compounds, and VOCs, Carbonyls, Sulfur Compounds, and

MetalsMetals

Contains one criteria pollutantsContains one criteria pollutants Sulfur dioxideSulfur dioxide

How to get ON the APWL?How to get ON the APWL?

?????

Candidates for AdditionCandidates for Addition

Monitored levels Monitored levels aboveabove screening value screening value and/or TCEQ standardand/or TCEQ standard

Short-term Short-term Magnitude and frequencyMagnitude and frequency

Long-termLong-term

Candidate for AdditionCandidate for Addition

0

1

2

3

4

5

6

7

8

9

Pollutant X

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

How to get OFF the APWL?How to get OFF the APWL?

?????

Candidates for RemovalCandidates for Removal

Monitored levels Monitored levels belowbelow screening value screening value and/or TCEQ standardand/or TCEQ standard

Short-term Short-term Decreases in Magnitude and frequencyDecreases in Magnitude and frequency

Long-termLong-term

How to get OFF the APWL?How to get OFF the APWL?

0

1

2

3

4

5

6

7

8

9

Pollutant X

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

Main PurposeMain Purpose Heighten Awareness both Internally and ExternallyHeighten Awareness both Internally and Externally

MapsMaps ToxFactsToxFacts

Helps agency focus resources for:Helps agency focus resources for:InspectionInspectionEnforcementEnforcementPermittingPermittingMobile MonitoringMobile MonitoringPollution Prevention ActivitiesPollution Prevention ActivitiesOtherOther

http://www.tceq.state.tx.us/implementation/tox/AirPhttp://www.tceq.state.tx.us/implementation/tox/AirPollutantMain/APWL.htmlollutantMain/APWL.html

SummarySummary

What is the Air Pollutant Watch List (APWL)?What is the Air Pollutant Watch List (APWL)?

What are Areas of Concern?What are Areas of Concern?

What are Pollutants of Interest?What are Pollutants of Interest?

What is the Purpose of the APWL?What is the Purpose of the APWL?

How to Add or Remove the APWL? How to Add or Remove the APWL?

How TCEQ uses the APWL?How TCEQ uses the APWL?

QuestionsQuestions? ?

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?APWLAPWL

http://www.tceq.state.tx.us/implementation/tox/AirPollutantMain/APWL.html

Darrell McCant contact informationDarrell McCant contact information512-239-4477512-239-4477dmccant@tceq.state.tx.usdmccant@tceq.state.tx.us