matthew kovar air permits division texas commission on environmental quality environmental trade...
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New Source Review Modeling & Impacts Evaluation
Matthew KovarAir Permits Division
Texas Commission on Environmental Quality
Environmental Trade Fair 2015
By What Authority?
• TCEQ receives its authority from:• Texas Health and Safety Code, Chapter
382 - Clean Air Act (TCAA)
• Federal Clean Air Act (FCAA)
• New minor sources or modifications shall comply with 30 TAC §116.111
• New major sources or major modifications in an attainment or unclassifiable area shall comply with 30 TAC §116.160
Federal Clean Air
Act
Texas Health & Safety
Code
Air Quality Demonstration
• Permit Reviewer determines which air contaminants and review types need to be included in the air quality analysis (AQA)
• Review types are:
• NAAQS
• PSD increments
• State property line
• Health effects
• Each review type has a specific set of associated air contaminants
• Some air contaminants are associated with more than one review type
Air Contaminant Data
Air Quality Demonstration Analysis
Permit ReviewerRequests Modeling
Air Quality Demonstrations
NAAQS:
SO2
NO2
COPSD Increment:SO2
NO2
Property Line:SO2
H2SO4
Health Effects:Styrene
NAAQS
SO2
NO2
CO
PSD Increme
nt
SO2
NO2
Property Line
SO2
H2SO4
Health Effects
Styren
e
Modeling Protocol• If project is major by itself or a major
modification, a protocol is required for all criteria pollutants with an increase:• Must be sent to EPA Region 6 for review
• May include protocol for state-only requirements
• Items to include in protocol are listed in protocol checklist
• Consider all the items in the protocol check list before you start on your protocol documentBefore you start, have a plan.
Modeling Protocol-Be Complete to Be Correct• Provide full documentation and details to
reduce review time and mitigate potential issues
• Protocol document should resemble AQA without modeling results
I wasn’t expecting
this!
Modeling Protocol-Background Info. Needed
• Station information• Time period• Monitored values• How will it be
used?• Justification
Pre-modeling Meeting• If the project is at a minor site or is a minor
modification at a major site, a protocol is not required, but recommended
• Provide a modeling summary two days prior to the pre-modeling meeting to give ADMT time to review and prepare
• Modeling summary includes same items as in protocol
Not aBrainstorming
Session
Pre-modeling Meeting-Tips• Provide full documentation and details to
reduce review time and mitigate potential issues
• Meeting could be for pre-protocol preparation• Meetings are typically conference calls
• Present your plan forthe air quality analysis
• Discuss any concerns or potential issues
Pre-modeling Meeting-Source Type Examples
Power Plants
Loading Racks
Air Quality Analysis• Pre-modeling meeting and/or protocol
increases your chances of a successful project
SUCCESS
AHEAD!
A good plan results in a successful air quality analysis.
Air Quality Analysis-What Is It?
• An addendum to the air permit application
• A stand-alone document
• Includes all information in support of the project
• Describes any deviations or changes from protocol or meeting summary
ModelingApproach
Justification &Supporting
Documentation
ModelingResults
Air Quality Analysis-Be Straightforward & Organized• Include a complete listing of all electronic files
• Summarize results demonstrating compliance
• Reiterate everything from the protocol and/or pre-modeling meeting
• Document any deviations from the protocol and/or pre-modeling meeting
• Present all information in a straightforward and organized fashion
• Provide as much documentation as possible
I would have never
thought to look here!
Avoiding Deficiencies• Deficiencies slow down the process and delay
permit issuance
• Lack of sufficient information
• Incorrect interpretations
Check for inconsistencies between model inputs and air quality analysis.
Avoiding Deficiencies• Deficiencies slow down the process and delay
permit issuance
• Lack of sufficient information
• Incorrect interpretations
Address all comments from meetings.
Monitor Selection Example
Project Site Location
Selected Monitor
Representative Monitor
Inappropriate Fugitive Source Characterization
Appropriate Fugitive Source Characterization
Updates in Modeling
AERMOD - Ambient Ratio Method 2 (ARM2)
• Must consider several factors to use ARM2:
• Tier 1 NOx modeling results
• In-stack NO2/NOx ratio of source
• Ozone background concentrations
Questions?
Contact Information• Matthew Kovar
Air Dispersion Modeling Team
(512) 239-0180
• Daniel MenendezTeam Leader – Air Dispersion Modeling Team
(512) 239-1537