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Emissions Inventory Overview-Part 2. Melinda Ronca-Battista, ITEP/TAMS Center. Group Discussion of Homework. What level did you select for your EI? Why did you select this level? What sources are on your reservation that you know about?. Quantifying Emissions. Examples. - PowerPoint PPT Presentation
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Emissions Inventory Overview-Part 2
Melinda Ronca-Battista,
ITEP/TAMS Center
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Group Discussion of Homework
What level did you select for your EI?
Why did you select this level?What sources are on your
reservation that you know about?
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Quantifying EmissionsExamples
1,000 tons/year NOx from a gas plant:
50 tons/day CO from on-road vehicles in Phoenix:
10 pounds/year mercury from a small power plant:
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How Are Emissions Estimated?Continuous Emissions Monitoring
Systems (CEMS) Or Source Testing
EPA Emission Estimation Models◦TANKS◦LANDGEM◦WATER9◦MOVES◦NONROAD
Material BalanceEmission Factors
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Quantifying EmissionsEmission Factor
◦ Conversion factor provided by EPA (AP-42) or other source to quantify emissions
◦ E.g., lbs mercury emitted per ton of coal burned
Activity◦ Collected by the person that estimates
the emissions ◦ Process data (tons of coal burned,
hours of operation)Emission Factor and Activity
used to estimate Emission rate for a single pollutant◦ E.g., 10 pounds/year mercury from
small power plant
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Quantifying (cont.)Basic estimating equation
E = EF x A = EF x activity (throughput)
Where◦ E = Emissions rate (TEISS calculates)◦ EF = Emission factor (TEISS provides)◦ A = Activity (aka throughput, that you collect and
enter into TEISS calculators)
E
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Where do I get the necessary data to calculate emissions?Process activity
◦Directly from source◦From permits◦Monitoring/CEMs◦Questionnaires/Surveys
LOTS of info on the internet
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For each type of source:Coming up, Data Collection slides
and TEISS Data Entry slides for each source type
Data Collection slides ◦Information you collect in real world
termsTEISS Data Entry slides
◦TEISS has a structure based on the NEI
◦Slides explain how data you collect fits into the structure
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Point Source Data CollectionPhysical Location (address, lat/long)
Stack parameters ◦Height◦Diameter◦Flowrate◦Exit gas temperature
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Point Source Data Collection (cont.)
Process-level information, leads to SCC selection◦Flow diagram◦Materials being consumed (type and
amount)◦Boiler throughput◦Operating schedules◦Control devices/efficiencies
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Point Source TEISS Data Entry• Facility Data
– Site Name – Physical Location (address, lat/long)
• Release Points • Emission Units • Processes • Control Equipment?• Period (time frame-usually annual)• Emissions (you can enter or calculate
with TEISS)
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Nonpoint Source Data CollectionProcess information
◦ Leads to SCC selection ◦ Types of operations
Gasoline storage tank refilling Unpaved roads
“Activity data” needed to calculate emissions◦ Type of refilling process (splash or
submerged)◦ VMT, vehicle weight, speed, road silt
content, etc.Pollution-management practices or
control measures◦ Dust abatement with water or petro-based
chemical
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Nonpoint Source TEISS Data EntryLocation◦If enter data for on-reservation
sources, your reservation◦If import county-level data from NEI
database, a county
Process--leads to SCC selectionControl Equipment/Measures Period (usually annual)Emissions (you can enter or
calculate with TEISS)
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Mobile Source Data CollectionOn-Road
◦Road types◦Vehicle types & use◦Vehicle Miles Traveled (VMT)
Off-Road◦Engine types◦Horsepower◦Hours of use
Model used to estimate emissions
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Mobile Source TEISS Data EntryLocation
◦If enter data for on-reservation sources, your reservation
◦If import county-level data from NEI database, a county
ProcessesPeriodEmissions (you enter from your
estimates based on road lengths/types or from EPA model calculations)
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Fire Data CollectionSpecial Case: covers large area,
like nonpoint sources, but in defined location like point sources
Data elements include◦ Dates of fire◦ Latitude/Longitude coordinates◦ Fire type (man-made or natural)◦ Acres burned
New EPA format and TEISS treat fires as EVENTS
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Fire TEISS Data EntryEvent IdentificationPeriod (dates)Location
◦If enter data for on-reservation fires, your reservation
◦If import county-level data from NEI database, a county
Geographic CoordinatesProcesses (prescribed burn or
wildfire)Emissions (from EPA or calculated
with TEISS)
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In Summary, a Final EI is…A list of air pollution sources for a
defined:◦area (reservation)◦time period (e.g., a year)
Information about each source (address, activities/processes)
Estimate of emission rate for each source
How you constructed the estimates
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An EI also contains…Charts/graphs to display and
summarize quantitative dataMapsBackground information or other
information about your area related to emissions/sources
Copies of surveys, calculations used, references, that you record in a dedicated notebook
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Homework due in 5 days:Read the Bishop Paiute Tribe EI to
get a sense of what is included in an EI.
Answer the questions in the Homework_EIOverviewPart2 document.
Email your answers to the instructors
Hint: just do it now while you remember
(Image taken from PetsForPatriots.org)