1 Unit Conversions and EI Codes Angelique Luedeker ITEP/TAMS Center
Dec 27, 2015
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Unit Conversions and TEISS
TEISS does some of the math for you
Emission Factor (EF) x Activity Data = Emissions
TEISS provides EFYou provide activity data
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Activity Data ExampleThe Total Area Tilled value you enter needs to be in units of acres
If you have collected data in other units, for example, square miles, you need to convert square miles to acres
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Emission FactorsEF is basically a factor for how much pollutant is emitted for a particular throughput
ExamplesLbs of PM10 emitted/acre of area tilledLbs of PM2.5 emitted/vehicle mile traveledLbs of mercury emitted/ton of coal burned
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Energy Unit Conversion
Converting energy units often requires knowing energy density of a given material
Energy density can vary within the same material
TEISS Unit Converter tool cannot convert energy to other unit categories, such as volume
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Energy Density
ExamplesNatural gas from different sources provides differing amounts of energy
High-heating value gas has 1027 BTUs/ft3
Low-heating value gas has 930 BTUs/ft3
Most gas is somewhere in-betweenDifferent kinds of wood provide different amounts of heat when burned
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Energy Density DefaultsWhat if you don’t know energy density of your reservation’s natural gas or wood?
Use defaultsFor natural gas, EPA’s AP-42 gives 1020 BTUs/ft3
For wood, TEISS provides a converter within the wood-burning calculators
Allows you to enter volume of wood (cords) and specify wood typeThen it calculates tons of wood per cord required to do calculation
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CODES!!!CODES!!!Why do we need them?
Computers organize information by codesStandardize descriptions and categories
ExamplesStates – CO, Co, Colo., ColoradoA computer sees 08, the FIPS code for Colorado
Takes guesswork outOne long code signifies a paragraph-long process description
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Tribal EIS CodesTribal EIS Codes
FIPS - Federal Information Processing Standard codes are used for states and counties
Tribal EIS codes: Kickapoo = 861 (3 digit)
States and counties use FIPs codesExample
Kansas FIPS code = 20 (2 digit)Brown County FIPS code = 013 (3 digit)
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SCC - Source Classification SCC - Source Classification CodesCodes
Approximately 9,000 valid codesMaintained / categorized by U.S. EPA
Source ClassificationPoint = 8 charactersNonpoint, Non-Road, On-Road, Event and Biogenic = 10 characters
EVERY PROCESS in TEISS must have an SCC!
Used as primary identifying data element in EPA's National Emission Inventory (NEI)
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SCC for Point SourcesSCC for Point Sources
Example: 30200501
3-02-005-01 = 8-characters
For each SCC, there are four levels of descriptions
SCC 1 Description (3): Industrial ProcessesSCC 3 Description (02): Food and AgricultureSCC 6 Description (005): Feed and Grain Terminal ElevatorsSCC 8 Description (01): Shipping and Receiving
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SCC for Nonpoint and SCC for Nonpoint and Other SourcesOther Sources
Example: 2610030000
26-10-030-000 = 10 characters
For each SCC, four levels of descriptionsSCC 2 Description (26): Waste Disposal, Treatment, and RecoverySCC 4 Description (26-10): Open BurningSCC 7 Description (26-10-030): ResidentialSCC 10 Description (26-10-030-000): Household Waste
Only 1 of each SCC in a location (reservation) because nonpoint SCC emissions are combined (unless emission type is diff: evap, exhaust, refueling are diff types of emissions from same SCC)
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SIC and NAICS CodesSIC and NAICS Codes
SIC - Standard Industrial Classification
NAICS – North American Industry Classification System
Economic sector codes
Beginning in 1997, SIC replaced by NAICS
NAICS reorganizes categories on production/process-oriented basis
EVERY POINT SOURCE in TEISS must have a NAICS Code!