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Toxicology Update
Tracie Phillips, Ph.D. & Roberta Grant, Ph.D.Toxicology DivisionTexas Commission on Environmental QualityEnvironmental Trade Fair 2015
Objectives
• New Toxicology Database:• Database Introduction• Database Prototype• Database Testing
• Updates to Odor Values:• Odor Regulation • Odor Changes• Odor Timeline
THE NEW TOXICOLOGY DATABASE
A new beginning
NEW
What is the new database?
Housed within the TAMIS database
One stop shop:• ESL List• AMCV List• Supporting
documents
Why are we changing?• Reduce errors• Proper database structure• More information/detail• Dynamic
Manual Spreadsheets 1000s of
ChemicalsErrors &
Frustration
What will be different?
1. No more “Published List” spreadsheets
What will be different?
2. Information will be dynamic
Database
Updates
New Info
What will be different?
3. ESL requests
• Consult the database 1st • No verification for
existing values
Database = Real Time
• At least a 2-week turnaround• Each value documented
• Should be received early in the permitting process
New ESL Request
What will be different?
4. All associated documentation will be linked:
• DSDs• Fact sheets• Public comments• Interim documentation
What will be different?5. Screening level reports
ReportsToxicology Reports
ESLEffects Screening Levels
SummaryValues Used in
Permitting Only
DetailAll Values (Health &
Welfare)
AMCVAir Monitoring
Comparison Values
What will be different?
6. More detail will be available:• Each value will be dated
Substance CASNo. Phase
Short-term ESL-
Health (ug/m3)
Short-term ESL-
Health (ppb)
Date Derived Status
Interim Source
Used for Air
Permitting Review
Short-term ESL-
Odor (ug/m3)
Short-term ESL -
Odor (ppb)
Date Derived Status
Odor Source
Used for Air
Permitting Review
antimony 7440-36-0 PM10 5 -- 10/1/2003 InterimNIOSH,
TLV, OSHA YES -- -- -- -- -- --benzene 71-43-2 -- 170 54 3/1/2011 Final -- YES 8700 2700 10/17/2007 Final -- --
cyclohexene 110-83-8 -- 600 180 6/28/2010 Interim
NIOSH, TLV, OSHA, FRG-MAK -- 10000 3000 6/28/2010 Interim Amoore YES
What will be different?
7. Source codes
Odor Interim
Long-term Short-term
What will be different?
8. List will be searchable by:
• Date• Substance:
• CAS#• Identified synonyms
• Substance type:• Alcohols• Surrogates
What will be different?
9. Use of surrogates:• Promotes consistency
Children
Parent Chemical A
Chemical X
Chemical Z
What will be different?
10. Identified synonyms
Styrene
Phenyl- ethylene
Vinyl benzene
Styrene Monomer
What is the timeline?
(4) Full Production – No More Published List:Date TBD
(3) Transition
& Beta Testing: Date TBD
(2) External
User Testing:Date TBD
(1) Internal
User Testing:Date TBD
PROTOTYPE DEMOTime for a conceptual demonstration
**For example purposes only, the following is not a true representation of the final product
TAMIS Welcome Screen
Login Screen
Report Selection Screen – Wizard Mode
Date Selection Screen
Report Parameter Criteria Screen
File Delimiter Selection Screen
Report Generation Screen
Report Output in Excel
Substance CASNo. Phase
Short-term ESL
(ug/m3)
Short-term ESL
(ppb)Date
Derived StatusChemical
BasisInterim Source Odor Source
Long-term ESL
(ug/m3)
Long-term ESL
(ppb)Date
Derived StatusChemical
BasisInterim Source
DSD derived date DSD Fact Sheet
Public comments Appendices
benzene 71-43-2 170 54 3/1/2011 Final Health 4.5 1.4 2/1/2011 Final Health 2/1/2011 http:/… http:/… http:/… http:/…
benzene polymer 71-43-2 MUST MEET
NAAQS
benzene resin 71-43-2 CONTACT
TOXICOLOGY
ethylene 71-85-1 1400 1200 4/15/2008 Final Odor PEL 34 30 4/15/2008 Final Health 4/15/2008 http:/… http:/… http:/… http:/…hydrogen fluoride
and soluble inorganic
fluorides, for permit reviews in
agricultural areas with cattle,
as HF 7664-39-3 3 3.7 (24 h) 9/15/2003 Final animal 0.75 0.91 9/15/2003 Final animal 9/15/2003 http:/… http:/… http:/… http:/…hydrogen fluoride
and soluble inorganic
fluorides, for permit reviews in
agricultural areas, as HF 7664-39-3 3 3.7 (24 h) 1/23/2013 Final vegetation 0.6 0.75 1/23/2013 Final vegetation 1/23/2013 http:/… http:/… http:/… http:/…
hydrogen fluoride and soluble
inorganic fluorides, as HF 7664-39-3 PM10 18 22 5/23/2007 Final Health 8.7 11 5/23/2007 Final Health 5/23/2007 http:/… http:/… http:/… http:/…
glycols, polyethylene, mono-(1,1,3,3-
tetramethylbutylphenyl) ether 9036-19-5 PM10 50 -- 1/23/2013 Interim Health NESCAUM 5 -- 1/23/2013 Interim Health 1/23/2013 http:/… http:/… http:/… http:/…
glycols, polyethylene, mono-(1,1,3,3-
tetramethylbutylphenyl) ether 9036-19-5 VAPOR 600 -- 5/23/2007 Interim Health Leonardos 60 -- 5/23/2007 Interim Health TLV-TD 5/23/2007
glycols, polypropylene,
2,3-epoxypropyl ether (DER 736 Epxoy Resin) 9072-62-2 PM10 50 -- 1/23/2013 Interim Odor Nader 5 -- 1/23/2013 Interim Health 1/23/2013
glycols, polypropylene,
2,3-epoxypropyl ether (DER 736 Epxoy Resin) 9072-62-2 VAPOR 1000 -- 5/23/2007 Interim Odor Leonardos 100 -- 5/23/2007 Interim Health 5/23/2007
TESTING THE DATABASE
Testers Wanted!
External Testing
If you would like to participate, send an e-mail to:
• Tracie Phillips: [email protected]
-or-• Toxicology Division: [email protected]
PROPOSED CHANGES TO THE DERIVATION OF ODOR-BASED VALUES
A needed change
NEW
Why do we regulate odors?
Odor is a leading cause of citizen complaints
The Texas Clean Air Act
Intent is regulation of odor to prevent nuisance conditions, not odor detection
Why are we changing?
Derivation with the intention of preventing odor
nuisance conditions
Large differences in reported odor threshold values
Consistency – all odor values
derived at one time
What will be different?
• Available and reliable studies• Historical data• Study bias considerations
Source Data
• Malodorous chemicals• Generic/surrogation, if needed
Chemical Classification
• Identify all potential values• Data integration to determine final
valueDerivation
What is the timeline?
Odor White Paper
Toxicity Factor Guidelines
Update
Odor Values Finalized
https://www.tceq.texas.gov/toxicology
Contact InformationRoberta Grant, [email protected]
Tracie Phillips, [email protected]
To improve is to change; to be perfect is to change often.
-Winston Churchill
