2005 Air Emissions Inventory

Criteria and Hazardous Air Pollutants Inventory Southern Ute Indian Reservation, ColoradoPresented by : Brenda Sakizzie, SUIT Senior Air Quality Specialist

Southern Ute Indian Reservation, Colorado

SUIT Air Quality

Purpose• Obtain and update baseline emissions data from various

sources within the Reservations exterior boundaries.• Last SUIT EI conducted was 2002.• The data will be used track total emissions of numerous

criteria pollutants including:– Nitric Oxides (NOx), – Carbon Monoxide (CO), – Particulate Matter (PM 10/2.5), – Sulfur Oxides (SOx),– Volatile Organic Compounds (VOC’s), and– Hazardous Air Pollutants (HAPs).

Source Categories• Point Sources:

– Title V Stationary Sources. • Area Sources:

– Oil & Gas Wells, Well-head Minor Source Compressors, Fireplace & Wood Burning Stoves, Propane Use, Airports, Gas Stations, Landfill Gas, Gravel Pits, & Agricultural.

• Mobile Sources:– On-Road Mobile Sources (paved), On-Road Mobile

Sources (unpaved), and Non-Road Mobile Sources.• Biogenic Sources

 

                 

              

Data collection• The data collection responsibilities were divided between

the Southern Ute Indian Tribe (SUIT) Air Quality Program staff and ITEP 2006 summer intern.

• The Tribe collected data for:– all major point sources– landfills, gravel pits, gas stations, airports, mobile sources,– biogenic emissions, and other area sources.

• Utilized Tribal Emissions Inventory Software Solution (TEISS) for emissions calculations.

• Utilized BEIS Software• Utilized LandGEM software

Point Sources (Title V Sources)

Definition• Stationary sources with potential emissions of >

100 tons per year of any criteria pollutant.• Stationary source with potential to emit > 10 tons

per year of any HAP or 25 tons per year of more then one HAP

(as defined by EPA)

Point Source EmissionsPoint sources emissions on the SUIT Reservation consisting

of compressor stations and gas treatment facilities for natural gas production and distribution.

CO NOx VOC SO2 PM10-Pri FormaldehydeTotal

HAPs

6,114.68 4,860.75 2,087.86 9.04 44.44 320.91 413.63

All emissions for the Title V Sources on the Reservation were taken directly from the Title V permits, Title V Permit Statement of Basis, & Title V Permit Applications.

2005 Point Source (Title V) Emissions on the SUIT Reservation (tons per year)(SOURCE: pg 12 of “SUIT 2005 EI” in Table 3.1)

Area Sources

Definition:• Stationary Sources with actual emissions between 2 and

100 tons per year of any criteria pollutant.• All other HAP emitting stationary sources that emit

between 2 and 10 tons per year of any specific HAP.– (as defined by EPA)

• Includes Oil & Gas Wells, Well-head Minor Source Compressors, Fireplace & Wood Burning Stoves, Propane use, Airports, Gas Stations, Landfill Gas, Gravel Pits and Agricultural.

Well-head & Minor Compressor Source Emissions

• Well-head & minor source compression is on the SUIT Reservation where additional compression is needed to extract natural gas from geologic formations.

• Approximately ~200 small compressor engines are located within the exterior boundaries of the Reservation (exclude Title V sources).

• Data provided by the natural gas production companies.– Emission information for each operating compressor

engine.

Area Source Emissions

Tentative 2005 Area Source Emissions on SUIT Reservation (tons per year) *NOTE: Final emission values for minor source compressors are pending.*(SOURCE: pg 27 of “SUIT 2005 EI” in Table 7.1)

Source Type Emissions Source CO NOx VOC PM10 SOx HAP*

Area Sources

Oil & Gas wells 9,736.00 4,285.35 34,342.60 - - 243.40

Well-head compressors 2,666.13* 2,794.62* 911.97*      

Fireplace & Wood Burning Stoves 27.35 0.33 - 3.63 - -

Propane use 11.44 67.90 - - - -

Airports 88.86 10.39 2.94 0.09 1.32 -

Gas Stations - - 13.14 - - -

Landfills - - 17.32 - - -

Gravel Pits - - - 0.32 - -

  Totals 12,529.78 7,158.59 35,287.97 4.04 1.32 243.40

Mobile SourcesDefinition:• Mobile sources consist of On-road (paved), On-road

(unpaved) and non-road mobile sources. – On-road sources consist of mobile sources licensed for

use on highways or roadways.– Non-road sources consist of other mobile sources

(construction equipment, lawn/garden equipment, boats, airplanes, etc).

Mobile Source EmissionsSource Types Emissions Source CO NOx VOC PM10 SOx HAP*

On-Road Mobile Sources

On-road Mobile (paved) 3,862.95 450.08 289.21 11.58 - -

On-road Mobile (unpaved) - - - - - -

Non-RoadMobile Sources Non-road Mobile 1,979.95 168.18 226.36 21.69 20.80 -

2005 Mobile Source Emissions on the SUIT Reservation (tons per year)*NOTE: On-road Mobile (unpaved) data are pending at this time.*

(SOURCE: pg 22 of “SUIT 2005 EI” in Table 5.1)

Biogenic

Definition:• Biogenic sources include only those pollutants that result from some sort of biological activity. • Biogenic emissions represent a significant portion

of the natural source emissions acting as ozone precursors; specifically, VOC, NOx, Isoprene, and Monoterpene.

Biogenic Emissions  Isoprene Monoterpene Organic VOC NO

LaPlata Totals (kg) 10,360,544.27 5,131,104.39 5,917,234.05 119,039.22

% of County covered by Res. 39.60% 39.60% 39.60% 39.60%

Archuleta Totals (kg) 10682,666.03 5,036,010.10 5,739,149.07 46,214.32

% of County covered by Res. 29.00% 29.00% 29.00% 29.00%

LaPlata Emissions on Res. (kg) 4,102.775.53 2,031,917.34 2,343,224.68 47,139.53

Archuleta Emissions on Res. (kg) 3,097,973.15 1,460,442.93 1,664,353.23 13,402.15

Reservation Totals (kg) 7,200,748.68 3,492,360.27 4,007,577.91 60,541.68

Reservation Totals (tons) 7,937.47 3,849.67 4,417.60 66.74

Total Biogenic Emissions on the SUIT Reservation (tons per year)(SOURCE: pg 25 of “SUIT 2005 EI” in Table 6.1)

Summary of Results

• The 2005 SUIT Emissions Inventory found: *Tentative 2005 Total Emissions by Pollutant (tons) within the exterior boundaries of the Southern Ute Indian Tribe Reservation*.

2005 Total Emissions by Pollutant (tons)

CO24,487.36*

NOx12,704.34*

HAP*657.03*

SOx31.16*

PM1081.75*

VOC42,309.50*

Pollutants in Comparison with the State of CO

  State of Colorado SUIT Reservation

CO 87,628 24,487*

NOx 34,846 12,704*

SO2 6,559 31*

VOC 124,578 42,309*

PM10PRI 157,875 82*

HAP   657*

State of Colorado Data collected from WRAP.http://www.wrapair.org/forums/ssjf/documents/Pivot_Tables/Area_Source_Pivot_2002.xls

*NOTE: Tentative 2005 SUIT Reservation Total Emissions.*

Pollutants in PerspectivePollutants for the State of Colorado and the SUIT

Reservation 2005

0

50,000

100,000

150,000

200,000

State of Colorado SUIT Reservation

To

ns

of

Po

llu

tan

ts

CO

NOx

SO2

VOC

PM10PRI

HAP

State of Colorado Data colleted from WRAP.http://www.wrapair.org/forums/ssjf/documents/Pivot_Tables/Area_Source_Pivot_2002.xls

*NOTE: Tentative 2005 SUIT Reservation Total Emissions.*

Volatile Organic Compounds (VOC)

Definition:• VOCs are constituents of

household/building products, adhesives, paints, etc.

• Carbon based molecules and emitted as organic gases through combustion.

• VOC emissions contribute to ozone formation.

Toluene

Hexane

chloro-trifluoro-methane

Benzene

Volatile Organic Compounds2005 VOC Emissions by Source (tons)

Oil & Gas w ells34,342.60

Airports2.94

Well-head compressors

911.97

Gas Stations13.14

Landfills17.82On-road Mobile

(paved)289.21

On-road Mobile (unpaved)

0.00

Non-road Mobile226.36

Biogenic4,417.60

Title V facilities2,087.86

*NOTE: Tentative 2005 SUIT Reservation Total VOC Emissions.*

Areas of Further Research:– Consider developing an agreement with private aircraft

owners to maintain aircraft landings/take-offs records for future SUIT EI.

– Include ammonia emissions, which EPA Region 6 is currently performing Passive Ammonia Sampling study to determine significance of ammonia emissions on Tribal lands, if any.

– Emission estimates from agricultural wind erosion and tilling operations were inconclusive. In the future, the SUIT EI should includes these emission when available on TEISS.

Future notes to keep in mind:

• Keep records of data collected for future references.• Maintain a contact list.• Submit letter of emission information requests as early as

possible– Include deadline dates and detailed spreadsheet/

questionaire of emission information to be provided.

Questions?

Contact Info:

• Southern Ute Indian Tribe

Air Quality Program

P.O. Box 737

Ignacio CO 81137

Telephone: 970-563-4705

Email: bsakizzie@southern-ute.nsn.us