1 Emissions Inventory Overview-Part 2 Melinda Ronca- Battista, ITEP/TAMS Center

2 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?

3 Quantifying Emissions Examples

4 4 How Are Emissions Estimated? Continuous Emissions Monitoring Systems (CEMS) Or Source Testing EPA Emission Estimation Models ◦ TANKS ◦ LANDGEM ◦ WATER9 ◦ MOVES ◦ NONROAD Material Balance Emission Factors

5 Quantifying Emissions Emission 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

6 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

7 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

8 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 terms TEISS Data Entry slides ◦ TEISS has a structure based on the NEI ◦ Slides explain how data you collect fits into the structure

9 Point Source Data Collection Physical Location (address, lat/long) Stack parameters ◦ Height ◦ Diameter ◦ Flowrate ◦ Exit gas temperature

10 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

11 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)

12 Nonpoint Source Data Collection Process 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

13 Nonpoint Source TEISS Data Entry Location ◦ If enter data for on-reservation sources, your reservation ◦ If import county-level data from NEI database, a county Process--leads to SCC selection Control Equipment/Measures Period (usually annual) Emissions (you can enter or calculate with TEISS)

14 Mobile Source Data Collection On-Road ◦ Road types ◦ Vehicle types & use ◦ Vehicle Miles Traveled (VMT) Off-Road ◦ Engine types ◦ Horsepower ◦ Hours of use Model used to estimate emissions

15 Mobile Source TEISS Data Entry Location ◦ If enter data for on-reservation sources, your reservation ◦ If import county-level data from NEI database, a county Processes Period Emissions (you enter from your estimates based on road lengths/types or from EPA model calculations)

16 Fire Data Collection Special 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

17 Fire TEISS Data Entry Event Identification Period (dates) Location ◦ If enter data for on-reservation fires, your reservation ◦ If import county-level data from NEI database, a county Geographic Coordinates Processes (prescribed burn or wildfire) Emissions (from EPA or calculated with TEISS)

18 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

19 An EI also contains… Charts/graphs to display and summarize quantitative data Maps Background information or other information about your area related to emissions/sources Copies of surveys, calculations used, references, that you record in a dedicated notebook

20 Homework due in 5 days: Read the Bishop Paiute Tribe EI to get a sense of what is included in an EI.Bishop Paiute Tribe EI Answer the questions in the Homework_EIOverviewPart2 document. your answers to the instructors Hint: just do it now while you remember (Image taken from PetsForPatriots.org)