Transcript MorongoEmissionsInventory.ppt

Emissions Inventory
(EI)
James Payne
Environmental Protection
Department
Morongo Band of Mission Indians
What is an Emissions
Inventory?
 Two-part process involving identification of
potential emission sources and then
calculating estimated quantities of
pollutants emitted by those sources
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Purpose of
Emissions Inventory
 Identify sources of air emissions
 Quantify estimated emissions from sources
 Establish baseline for future air-related activities
 Monitoring
 Updated EIs
 PSD classification
 Permitting or compliance activities
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Uses of Emissions Inventory
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Provides key portion of general environmental assessment
Demonstrate contribution of tribal lands to local emissions
Develop emissions control strategies
Assist in locating ambient monitoring sites and selecting
monitoring equipment
 Assist in filling EI data gap by reporting to National Emissions
Inventory (NEI) database
 When repeated, can indicate effects of economic development
and tribal air program
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Uses of EI (cont.)
 Assist in “Major Source” determination, permits,
and compliance evaluations
 HAPS / MACT
 Title V
 New Source Performance Standards (NSPS)
 Emissions Trading
 Toxic Release Inventory
 Environmental Audits
 Pollution prevention
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Inventory Steps
 Source identification
 Emissions Inventory Preparation Plan (IPP)
 QA/QC important from early on
 Must identify use of data to know type to be collected
 Inspection to verify sources/emissions
 Emission estimates/calculations
 Presentation/use of results
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What should be
inventoried?
 Point sources
 Process vents
 Boilers
 Incinerator stacks
 Mobile sources
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Cars & trucks
Trains, boats, aircrafts
Heavy equipment
Recreational vehicles
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What should be
inventoried? (cont.)
 Fugitive, area/non-point sources
 Open burning
 Wild/controlled forest fires
 Biogenic emissions (vegetation, soils)
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Woodstoves & other fuel combustion
Agricultural practices
Paved & unpaved roads
Small sources (drycleaners, paint shops, gas
stations, other)
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Morongo
Scope of Emissions Inventory
1999 & 2007
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Morongo
Scope of Emissions Inventory
1999 & 2007
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Sulfur Dioxide (SO2) / SOx
Nitrogen Oxides (NO & NO2) / NOx
Carbon Monoxide (CO) / CO
Reactive Organic Gases (ROG) / VOC’s
Particulate Matter < 10 µm (PM10) / (PM10)
Particulate Matter < 2.5 µm (PM2.5)
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Where do I start?
 Identify sources impacting your reservation; internal and
external
 Identify areas of concern if inventorying entire
reservation is not feasible
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EPA National Emissions Inventory (NEI Data)
“Windshield survey”
“Phonebook survey”
“Household questionnaires” or door-to-door polling
Obtain a copy of ITEP’s Tribal Emissions Inventory
Software Solution (TEISS)
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Information Gathered
 Existing data (from sources, air pollution control
authorities, dept. of transportation, permits,
other information sources)
 Description/location of all sources and related
equipment & processes
 Modeling parameters (if used)
 Other information needed for calculations based
on AP-42 or TEISS
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Information Gathered
(cont.)
 Point/Stationary sources
 Process flow diagram
 Make-up of individual exhaust streams
 Gas flow rates
 Control device efficiencies (if applicable)
 Material use types and quantities
 Operating schedules (24/7, seasonal, event)
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Information Gathered
(cont.)
 Mobile sources
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Vehicle Miles Traveled (VMT)
Road surface types
Vehicle types & use
Off-road sources (use)
 Area/Non-point sources
 Types of operations/emissions
 “Activity data” needed to calculate emissions
 Pollution-management practices
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Information Gathered:
Examples
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Cords of wood burned per year
Number of acres tilled per year
Miles of dirt/paved roads
Number of vehicles using sections of road
Tons of gravel processed
Number of hours burn barrels are used per year
Gallons of solvent purchased/recycled
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Morongo Internal and External
Sources
 MOBILE SOURCES
 Passenger cars, trucks and motorcycles
 Local roads
 Freeway
 Weigh Station
 Municipal Airport
 Trains
 AREA/NON-POINT SOURCES
 Small sources spread throughout an area
 Heaters
 Generators
 Wood stoves and fireplaces
 Quarries
 Wind blown dust from unpaved roads
 Outdoor burning activities (ceremonial fires, trash burning)
 STATIONARY SOURCES
 Industrial and commercial facilities
 Cogeneration facility (x2)
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Cogeneration Facility
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Rock Quarry/Asphalt Plant
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Diesel Generators
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Forest Fires
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Quantify Emissions
 Stack tests and continuous emission monitors
(CEMs)
 Most accurate
 Expensive
 Data evaluation requires expertise
 Engineering estimations
 Not based on specific studies
 Best judgment
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Quantify Emissions (cont.)
 Material balances
 “What goes in must come out” philosophy
 Not applicable to all pollutants (eg., NOx,, O3)
 Example: use of purchase records and RCRA disposal
records to compute emissions of perchloroethylene
(dry cleaning solvent)
Air emissions = (amount of PERC purchased) –
(amount of PERC waste disposed of)
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Emissions Factors
 Pre-determined ratios/numbers used to calculate
emissions
 AP-42 (Compilation of Air Pollutant Emission Factors,
U.S. EPA)
 Conservative estimations
 Based on specific studies
 Many emission factors published, available
 Other sources of emissions factors
 FIRE database
 State/local air pollution control districts
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Reporting/Updates
 Target audience
 Narrative report with tables of categorized
results
 Sensitive data may/may not be included
 Update as necessary or every 5 years
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2000
1999 & 2007 Emission Inventories
Tons per Year
1800
1600
On Reservation
1999
1400
Off Reservation
1999
On Reservation
2008
1200
Off Reservation
2008
1000
800
600
400
200
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0
Sox
Nox
CO
VOC
PM10
Conclusions from Morongo
1999 & 2007 Inventory
 Trains and I-10 traffic contribute almost all of SO2 and NOx
emissions both On- and Off-Reservation;
 I-10 traffic contributes most of CO and ROG emissions in the Study
Area, followed by local traffic and heating, both On- and OffReservation;
 Local traffic was the primary source of PM10 and PM2.5 emissions in
1999, both On- and Off-Reservation. This effect is caused mostly by
travel on unpaved roads
 I-10 traffic was the primary source of PM10 in 2007.
 On-Reservation and Off-Reservation emissions are similar in
magnitude.
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Recap of Morongo EI
 Previous EI
 Used TEISS to identify new and existing sources
 Using consultant to quantify specific emissions
from generators
 Data used as a comparison to evaluate sources
and concerns
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Questions/Discussion
I’m still very
sorry about
that…
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