Cumulative risk prioritization tool
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Cumulative Risk Prioritization Tool. Prioritizing Cumulative Inhalation Risks and Developing Solutions. Community Issues:. Is the air I breath safe? Is the water I drink safe? Is the food I eat safe?

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Cumulative Risk Prioritization Tool

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Cumulative risk prioritization tool

Cumulative Risk Prioritization Tool

Prioritizing Cumulative Inhalation Risks and Developing Solutions


Community issues

Community Issues:

  • Is the air I breath safe?

  • Is the water I drink safe?

  • Is the food I eat safe?

    It is possible to have facilities/geographic areas meeting all state and Federal rules yet still have unhealthy air?


Regional air impact modeling initiative raimi

Regional Air Impact Modeling Initiative (RAIMI)

Region 6 developed a tool to answer these questions:

  • Assesses “community-level” inhalation impact

  • Can evaluate an unlimited number of stationary and mobile sources


Regional air impact modeling initiative raimi1

Regional Air Impact Modeling Initiative (RAIMI)

What’s different from past efforts?

  • Attributes impact back to individual compounds and individual emission sources

  • Serves as platform for strategic and tailored environmental actions—facilitates solutions


What is the level of expertise and effort required

What is the level of expertise and effort required?

  • Knowledge of emissions data

  • Expertise in air dispersion modeling

  • Understanding of model sensitivities

  • Understanding of risk results


Cumulative risk prioritization tool

How Accurate is this?

  • Emissions inventories vary in completeness/data quality

  • Source locations are critical and often incorrect in inventories

  • Simple exposure scenarios utilized – 30 year, 350 day, outdoor

  • Process upsets usually not included or characterized

  • Air dispersion/risk model consistency

  • Comparison to air monitors for pilot study have indicated predicted results within 20% of monitored results


Cumulative risk prioritization tool

GIS Platform

Example Case Study – Port Neches, Texas

  • History

    • CEP shows Jefferson County, as having the highest potential for exposure in Region 6

  • Context

    • 16 Major industrial facilities

    • 1,500 Point source emissions

    • 82 Area and mobile source categories

    • 188+ HAPs

  • Findings

    • Identified and prioritized 2 facilities

    • Identified and prioritized 5 point sources

    • Identified local data gaps

    • Prioritized 1 area and 2 mobile emission source categories


Cumulative risk prioritization tool

Define Assessment Scope – County vs. Community Level Resolution


Cumulative risk prioritization tool

Results Transparency to Support Prioritization

Groves

Jefferson County, Texas

Cumulative Inhalation Cancer Risk Profile for Residential Area

Beaumont

Nederland


Cumulative risk prioritization tool

Results Resolution to Support Prioritization and Verification – Source Attribution Profiling (Zoom)

Identified source was shared with TCEQ, source impacts validated by mobile monitoring, solution (covering wastewater impoundment) was negotiated.

Jefferson County, Texas

Cumulative Inhalation Cancer Risk Profile for Residential Area


Cumulative risk prioritization tool

Results Resolution to Support Verification and Legal Review – Source Attribute Tracking (Sample)

Source Attribute Table

Source Attribute Table

Account No.

Account No.

JE0017A

JE0017A

Account Name

Ameripol Synpol Corp.

Account Name

Ameripol Synpol Corp.

Site Name

WasteWater

Site Name

 Trap 4 – XS99

Facility Name

 Waste water system

FacilityName

ETFStyreneTank

Source Type

 Fugitive

Plant ID

Tank Sector 9989A

Point Name

WTWTR DISCH TO RT

Point Name

NE1

Unique Pt Name

JE0F011

Unique Pt Name

JE0F00M

EPN

Wastewater

EPN

T-ESTY

FIN

 F-WWATER

FIN

 TANKS-ESTY

Permit Status

RCRA Permit No. 988A

Permit Status

RCRA – Permit No. 988A

SIC Code

--

SIC Code

--

Facility Contact

 Bob Smith 222-222-2222

Facility Contact

Bob Smith – 222-222-2222

Emissions Profile (TPY)

Emissions Profile (TPY)

Contaminant

Actual Annual

Actual Allowable

Contaminant

Actual Annual

Actual Allowable

1,3-Butadiene

11.87

N/A

1,3-Butadiene

1.78

N/A

Styrene

11.42

N/A

Styrene

0.67

N/A


Cumulative risk prioritization tool

How to Use Results

  • Conduct Risk-Based Prioritizations

  • Complements National-Scale Assessments

  • Identify Risk Trends

  • Determine Significance of Data Gaps

  • Track Emissions Reduction Efforts

  • Support Monitoring Programs


Cumulative risk prioritization tool

RAIMI COMPONENTS

Example Population Maps: Ethnicity


Cumulative risk prioritization tool

Nighttime Population Distribution

Land Scan

USA Population Data

Diurnal population distribution is critical to understanding the localized nature of exposure.

More than 160,000 people occupy this downtown tract during a typical workday. The same area is almost deserted during nighttime hours.

Daytime Population Distribution


Cumulative risk prioritization tool

Population and Risk Averaging


Summary

Summary

  • Focus is on identifying individual sources for targeted reductions, not simply identifying areas of concern

  • Initial findings: a small number of sources/ chemicals result in majority of impact


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